ttlsa教程系列之neo4j---（二）Neo4j REST API使用实例 一． 简介 通过REST API方式与Neo4j进行交互式操作。请求和响应数据默认是以JSON格式展示的。需要显示设置请求头Accept: application/json请求响应数据。如果请求发送数据，需要设置Content-Type:application/json响应头。 整个REST API过程可以以JSON数据流传输，为服务器端带来更好的性能和更低的内存开销。要使用它，只需在每个请求头中加上X-Stream:true即可。 二．Nodes(节点) 1. 访问root目录 服务器根目录是REST API操作的开始点。包含数据库基本开始点，一些版本信息和扩展信息。如果设置了一个reference节点，并且该节点实际存在于数据库中，将之存在reference_node条目。 # curl -D - -H "Accept:application/json" "http://127.0.0.1:7474/db/data/" //url后面的/不能省略 HTTP/1.1 200 OK Content-Length: 762 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { "CypherPlugin" : { "execute_query" : "http://127.0.0.1:7474/db/data/ext/CypherPlugin/graphdb/execute_query" }, "GremlinPlugin" : { "execute_script" : "http://127.0.0.1:7474/db/data/ext/GremlinPlugin/graphdb/execute_script" } }, "node" : "http://127.0.0.1:7474/db/data/node", "node_index" : "http://127.0.0.1:7474/db/data/index/node", "relationship_index" : "http://127.0.0.1:7474/db/data/index/relationship", "extensions_info" : "http://127.0.0.1:7474/db/data/ext", "relationship_types" : "http://127.0.0.1:7474/db/data/relationship/types", "batch" : "http://127.0.0.1:7474/db/data/batch", "cypher" : "http://127.0.0.1:7474/db/data/cypher", "neo4j_version" : "1.8.1" } 2. 以JSON流（以json格式化输出） # curl -D - -H "Accept:application/json" -H "X-Stream:true" "http://127.0.0.1:7474/db/data/" HTTP/1.1 200 OK Content-Encoding: UTF-8 Content-Type: application/json; stream=true Access-Control-Allow-Origin: * Transfer-Encoding: chunked Server: Jetty(6.1.25) {"extensions":{"CypherPlugin":{"execute_query":"http://127.0.0.1:7474/db/data/ext/CypherPlugin/graphdb/execute_query"},"GremlinPlugin":{"execute_script":"http://127.0.0.1:7474/db/data/ext/GremlinPlugin/graphdb/execute_script"}},"node":"http://127.0.0.1:7474/db/data/node","node_index":"http://127.0.0.1:7474/db/data/index/node","relationship_index":"http://127.0.0.1:7474/db/data/index/relationship","extensions_info":"http://127.0.0.1:7474/db/data/ext","relationship_types":"http://127.0.0.1:7474/db/data/relationship/types","batch":"http://127.0.0.1:7474/db/data/batch","cypher":"http://127.0.0.1:7474/db/data/cypher","neo4j_version":"1.8.1"} 3. 创建节点 # curl -D - -H "Accept:application/json" -X POST "http://127.0.0.1:7474/db/data/node" HTTP/1.1 201 Created Content-Length: 1186 Location: http://127.0.0.1:7474/db/data/node/8614011 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/8614011/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/8614011/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/8614011/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8614011/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/8614011/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/8614011/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/8614011", "properties" : "http://127.0.0.1:7474/db/data/node/8614011/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8614011/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/8614011/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8614011/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/8614011/relationships", "data" : { } } 4. 创建带属性节点 # curl -i -H "Accept:application/json" -H "Content-type: application/json" -X POST -d '{"name":"xuhh"}' "http://127.0.0.1:7474/db/data/node" // 响应头 Content-type: application/json不能省略 HTTP/1.1 201 Created Content-Length: 1206 Location: http://127.0.0.1:7474/db/data/node/8615721 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/8615721/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/8615721/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/8615721/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/8615721", "properties" : "http://127.0.0.1:7474/db/data/node/8615721/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/8615721/relationships", "data" : { "name" : "xuhh" } } # curl -i -H "Content-Type: application/json" -X POST -d '{"addreess":null}' "http://127.0.0.1:7474/db/data/node" //节点属性不能为null HTTP/1.1 400 Bad Request Content-Length: 443 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "message" : "Could not set property \"addreess\", unsupported type: null", "exception" : "PropertyValueException", "stacktrace" : [ "org.neo4j.server.rest.web.DatabaseActions.set(DatabaseActions.java:155)", "org.neo4j.server.rest.web.DatabaseActions.createNode(DatabaseActions.java:213)", "org.neo4j.server.rest.web.RestfulGraphDatabase.createNode(RestfulGraphDatabase.java:195)", "java.lang.reflect.Method.invoke(Method.java:597)" ] } # curl -i -H "Content-Type: application/json" -X POST -d '{"school":{"University":"Tsinghua","senior middle school":"Experimental High School"}}' "http://127.0.0.1:7474/db/data/node" //属性值不能嵌套 HTTP/1.1 400 Bad Request Content-Length: 505 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "message" : "Could not set property \"school\", unsupported type: {University=Tsinghua, senior middle school=Experimental High School}", "exception" : "PropertyValueException", "stacktrace" : [ "org.neo4j.server.rest.web.DatabaseActions.set(DatabaseActions.java:155)", "org.neo4j.server.rest.web.DatabaseActions.createNode(DatabaseActions.java:213)", "org.neo4j.server.rest.web.RestfulGraphDatabase.createNode(RestfulGraphDatabase.java:195)", "java.lang.reflect.Method.invoke(Method.java:597)" ] } 5. 查看节点属性 # curl -i -H "Accept:application/json" -H "Content-type: application/json" -X GET "http://127.0.0.1:7474/db/data/node/8615721/properties" HTTP/1.1 200 OK Content-Length: 21 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "name" : "xuhh" } 6．设置某个属性 # curl -i -H "Content-type: application/json" -X PUT -d '"North Boy"' "http://127.0.0.1:7474/db/data/node/8615721/properties/nickname" HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) # curl -i -H "Accept:application/json" -X GET "http://127.0.0.1:7474/db/data/node/8615721/properties" HTTP/1.1 200 OK Content-Length: 49 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "nickname" : "North Boy", "name" : "xuhh" } # curl -i -H "Accept:application/json" -X GET "http://127.0.0.1:7474/db/data/node/8615721/properties/name" //查看某一属性值 HTTP/1.1 200 OK Content-Length: 6 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) "xuhh" 7. 删除节点 如果该节点有relationships，将不能被删除，除非先删除relationships。 # curl -D - -H "Accept:application/json" -X DELETE http://127.0.0.1:7474/db/data/node/8614011 HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) 8. 获取不存在节点 # curl -D - -H "Accept:application/json" http://127.0.0.1:7474/db/data/node/8614011 HTTP/1.1 404 Not Found Content-Length: 425 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "message" : "Cannot find node with id [8614011] in database.", "exception" : "NodeNotFoundException", "stacktrace" : [ "org.neo4j.server.rest.web.DatabaseActions.node(DatabaseActions.java:123)", "org.neo4j.server.rest.web.DatabaseActions.getNode(DatabaseActions.java:234)", "org.neo4j.server.rest.web.RestfulGraphDatabase.getNode(RestfulGraphDatabase.java:225)", "java.lang.reflect.Method.invoke(Method.java:597)" ] } 三．Relationships(关系) 从一个节点获取关系的一般模式是： http://IP:7474/db/data/node/node_id/relationships/{all,in,out}/{-list|&|types} types是一个符号分隔的列表类型 1. 通过ID获取关系 # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/relationship/8615721" HTTP/1.1 200 OK Content-Length: 495 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { }, "start" : "http://127.0.0.1:7474/db/data/node/7104006", "property" : "http://127.0.0.1:7474/db/data/relationship/8615721/properties/{key}", "self" : "http://127.0.0.1:7474/db/data/relationship/8615721", "properties" : "http://127.0.0.1:7474/db/data/relationship/8615721/properties", "type" : "Knows", "end" : "http://127.0.0.1:7474/db/data/node/7104046", "data" : { "time" : 1362101805, "name" : "得瑟瑟", "deleted" : 0 } } 2. 创建关系 # curl -i -H "Accept:application/json" -H "Content-type: application/json" -X POST -d '{"company":"NetDragon Websoft Inc.", "department":"Tech"}' "http://127.0.0.1:7474/db/data/node" HTTP/1.1 201 Created Content-Length: 1254 Location: http://127.0.0.1:7474/db/data/node/8923850 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/8923850/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/8923850/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/8923850/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8923850/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/8923850/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/8923850/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/8923850", "properties" : "http://127.0.0.1:7474/db/data/node/8923850/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8923850/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/8923850/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8923850/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/8923850/relationships", "data" : { "department" : "Tech", "company" : "NetDragon Websoft Inc." } } # curl -D - -H Accept:application/json -H Content-Type:application/json -X POST -d '{"type":"EMPLOYEE","to":"http://127.0.0.1:7474/db/data/node/8923850","data":{"sex":"male","mobile":"18650365423"}}' "http://127.0.0.1:7474/db/data/node/8615721/relationships" //"data":{"sex":"male","mobile":"18650365423"}}'是关系属性。没有的话，就是创建没有属性的关系。 HTTP/1.1 201 Created Content-Length: 481 Location: http://127.0.0.1:7474/db/data/relationship/11068619 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { }, "start" : "http://127.0.0.1:7474/db/data/node/8615721", "property" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties/{key}", "self" : "http://127.0.0.1:7474/db/data/relationship/11068619", "properties" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties", "type" : "EMPLOYEE", "end" : "http://127.0.0.1:7474/db/data/node/8923850", "data" : { "sex" : "male", "mobile" : "18650365423" } } 3. 获取关系所有属性 # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/relationship/11068619/properties" HTTP/1.1 200 OK Content-Length: 48 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "mobile" : "18650365423", "sex" : "male" } 4. 给关系设置属性 # curl -i -H "Content-type: application/json;charset=UTF-8" -X PUT -d '"SA"' "http://127.0.0.1:7474/db/data/relationship/11068619/properties/job" HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/relationship/11068619/properties" HTTP/1.1 200 OK Content-Length: 64 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "job" : "SA", "mobile" : "18650365423", "sex" : "male" } 5. 更改关系属性 # curl -i -H "Content-type: application/json;charset=UTF-8" -X PUT -d '"System Administrator"' "http://127.0.0.1:7474/db/data/relationship/11068619/properties/job" HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/relationship/11068619/properties" HTTP/1.1 200 OK Content-Length: 82 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "job" : "System Administrator", "mobile" : "18650365423", "sex" : "male" } 6. 获取节点的所有关系 # curl -i -H "Accept:application/json" -H "Content-type: application/json" -X POST -d '{"name":"xiao A","nickname":"A Yi"}' "http://127.0.0.1:7474/db/data/node" HTTP/1.1 201 Created Content-Length: 1233 Location: http://127.0.0.1:7474/db/data/node/8932312 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) # curl -D - -H Accept:application/json -H Content-Type:application/json -X POST -d '{"type":"EMPLOYEE","to":"http://127.0.0.1:7474/db/data/node/8923850","data":{"sex":"male","mobile":"","job":"Network Administrator"}}' "http://127.0.0.1:7474/db/data/node/8932312/relationships" HTTP/1.1 201 Created Content-Length: 507 Location: http://127.0.0.1:7474/db/data/relationship/11078129 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/node/8615721/relationships/all" //获取节点8615721所有关系（outcoming relationships） HTTP/1.1 200 OK Content-Length: 521 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ { "start" : "http://127.0.0.1:7474/db/data/node/8615721", "data" : { "sex" : "male", "job" : "System Administrator", "mobile" : "18650365423" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11068619", "property" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" } ] # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/node/8932312/relationships/all" //获取节点8932312所有关系(outcoming relationships) HTTP/1.1 200 OK Content-Length: 511 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ { "start" : "http://127.0.0.1:7474/db/data/node/8932312", "data" : { "sex" : "male", "job" : "Network Administrator", "mobile" : "" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11078129", "property" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" } ] # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/node/8923850/relationships/all" //获取节点8923850所有关系(incoming relationships) HTTP/1.1 200 OK Content-Length: 1030 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ { "start" : "http://127.0.0.1:7474/db/data/node/8615721", "data" : { "sex" : "male", "job" : "System Administrator", "mobile" : "18650365423" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11068619", "property" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" }, { "start" : "http://127.0.0.1:7474/db/data/node/8932312", "data" : { "sex" : "male", "job" : "Network Administrator", "mobile" : "" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11078129", "property" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" } ] 7. 获取incoming relationships # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/node/8923850/relationships/in" HTTP/1.1 200 OK Content-Length: 1030 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ { "start" : "http://127.0.0.1:7474/db/data/node/8615721", "data" : { "sex" : "male", "job" : "System Administrator", "mobile" : "18650365423" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11068619", "property" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" }, { "start" : "http://127.0.0.1:7474/db/data/node/8932312", "data" : { "sex" : "male", "job" : "Network Administrator", "mobile" : "" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11078129", "property" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" } ] 8. 获取outcoming relationships # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/node/8923850/relationships/out" HTTP/1.1 200 OK Content-Length: 3 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ ] 9. 获取节点关系类型 # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/node/8923850/relationss/all/EMPLOYEE" HTTP/1.1 200 OK Content-Length: 1030 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ { "start" : "http://127.0.0.1:7474/db/data/node/8615721", "data" : { "sex" : "male", "job" : "System Administrator", "mobile" : "18650365423" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11068619", "property" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11068619/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" }, { "start" : "http://127.0.0.1:7474/db/data/node/8932312", "data" : { "sex" : "male", "job" : "Network Administrator", "mobile" : "" }, "self" : "http://127.0.0.1:7474/db/data/relationship/11078129", "property" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties", "type" : "EMPLOYEE", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/8923850" } ] 10. 删除关系 # curl -i -H "Content-type: application/json;charset=UTF-8" -X DELETE "http://127.0.0.1:7474/db/data/node/8932312" //删除节点前需先删除关系 HTTP/1.1 409 Conflict Content-Length: 404 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "message" : "The node with id 8932312 cannot be deleted. Check that the node is orphaned before deletion.", "exception" : "OperationFailureException", "stacktrace" : [ "org.neo4j.server.rest.web.DatabaseActions.deleteNode(DatabaseActions.java:255)", "org.neo4j.server.rest.web.RestfulGraphDatabase.deleteNode(RestfulGraphDatabase.java:239)", "java.lang.reflect.Method.invoke(Method.java:597)" ] } # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/relationship/11078129" HTTP/1.1 200 OK Content-Length: 507 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { }, "start" : "http://127.0.0.1:7474/db/data/node/8932312", "property" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties/{key}", "self" : "http://127.0.0.1:7474/db/data/relationship/11078129", "properties" : "http://127.0.0.1:7474/db/data/relationship/11078129/properties", "type" : "EMPLOYEE", "end" : "http://127.0.0.1:7474/db/data/node/8923850", "data" : { "sex" : "male", "job" : "Network Administrator", "mobile" : "" } } # curl -i -H "Accept: application/json" -X DELETE "http://127.0.0.1:7474/db/data/relationship/11078129" //删除关系 HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) # curl -i -H "Content-type: application/json;charset=UTF-8" -X GET "http://127.0.0.1:7474/db/data/relationship/11078129" HTTP/1.1 404 Not Found Content-Length: 392 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "exception" : "RelationshipNotFoundException", "stacktrace" : [ "org.neo4j.server.rest.web.DatabaseActions.relationship(DatabaseActions.java:137)", "org.neo4j.server.rest.web.DatabaseActions.getRelationship(DatabaseActions.java:599)", "org.neo4j.server.rest.web.RestfulGraphDatabase.getRelationship(RestfulGraphDatabase.java:432)", "java.lang.reflect.Method.invoke(Method.java:597)" ] } 11. 获取所有关系类型 # curl -i -H "Accept: application/json" -X GET "http://127.0.0.1:7474/db/data/relationship/types" HTTP/1.1 200 OK Content-Type: application/json Access-Control-Allow-Origin: * Transfer-Encoding: chunked Server: Jetty(6.1.25) ["LOVES","EMPLOYEE","MATRIX","KNOWS","Knows","HAS_CODED"] 四．索引(indexes) 索引可以包括nodes和relationships。通过默认配置来创建索引，在向数据库添加节点或关系时，索引将会自动创建的。什么样的默认配置取决于你如何配置数据库的。如果没有更改任何索引配置，索引将使用基于lucene的后端。 1. 创建节点索引 # curl -i -H "Content-Type: application/json" -X POST -d '{"name":"favorites"}' http://127.0.0.1:7474/db/data/index/node/ HTTP/1.1 201 Created Content-Length: 88 Location: http://127.0.0.1:7474/db/data/index/node/favorites/ Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "template" : "http://127.0.0.1:7474/db/data/index/node/favorites/{key}/{value}" } 2. 创建节点索引配置 自定义索引配置。如果你乐于默认配置，nodes/relationships未存在的索引将会自动被创建。 # curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X POST -d '{"name": "xuhh","config":{"type":"fulltext","provider":"lucene","to_lower_case":"false"}}' http://127.0.0.1:7474/db/data/index/node/ HTTP/1.1 201 Created Content-Length: 160 Location: http://127.0.0.1:7474/db/data/index/node/xuhh/ Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "template" : "http://127.0.0.1:7474/db/data/index/node/xuhh/{key}/{value}", "type" : "fulltext", "provider" : "lucene", "to_lower_case" : "false" } 3. 列出节点索引 # curl -i -H "Accept: application/json" http://127.0.0.1:7474/db/data/index/node/ HTTP/1.1 200 OK Content-Length: 623 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "xuhh" : { "to_lower_case" : "false", "template" : "http://127.0.0.1:7474/db/data/index/node/xuhh/{key}/{value}", "provider" : "lucene", "type" : "fulltext" }, "vertices" : { "template" : "http://127.0.0.1:7474/db/data/index/node/vertices/{key}/{value}", "_blueprints:type" : "AUTOMATIC", "provider" : "lucene", "_blueprints:autokeys" : "null", "type" : "exact" }, "node_auto_index" : { "template" : "http://127.0.0.1:7474/db/data/index/node/node_auto_index/{key}/{value}", "_blueprints:type" : "MANUAL", "provider" : "lucene", "type" : "exact" } } 4. 删除节点索引 # curl -i -H "Accept: application/json" -X DELETE http://127.0.0.1:7474/db/data/index/node/favorites HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) 5. 向索引添加节点 在给定的索引中以key-value键值对与节点关联。 # curl -i -H "Accept: application/json" -H "Content-Type: application/json" -X POST -d '{"value":"v1", "uri":"http://127.0.0.1:7474/db/data/node/8615721","key":"k1"}' http://127.0.0.1:7474/db/data/index/node/xuhh HTTP/1.1 201 Created Content-Length: 1316 Location: http://127.0.0.1:7474/db/data/index/node/xuhh/k1/v1/8615721 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) { "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/8615721/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/8615721/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/8615721/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/8615721", "properties" : "http://127.0.0.1:7474/db/data/node/8615721/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/8615721/relationships", "data" : { "nickname" : "North Boy", "name" : "xuhh" }, "indexed" : "http://127.0.0.1:7474/db/data/index/node/xuhh/k1/v1/8615721" } 6. 查找完全匹配的节点 # curl -i -H "Accept: application/json" http://127.0.0.1:7474/db/data/index/node/xuhh/k1/v1 HTTP/1.1 200 OK Content-Length: 1320 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ { "indexed" : "http://127.0.0.1:7474/db/data/index/node/xuhh/k1/v1/8615721", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/out", "data" : { "nickname" : "North Boy", "name" : "xuhh" }, "traverse" : "http://127.0.0.1:7474/db/data/node/8615721/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/8615721/properties/{key}", "self" : "http://127.0.0.1:7474/db/data/node/8615721", "properties" : "http://127.0.0.1:7474/db/data/node/8615721/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/in", "extensions" : { }, "create_relationship" : "http://127.0.0.1:7474/db/data/node/8615721/relationships", "paged_traverse" : "http://127.0.0.1:7474/db/data/node/8615721/paged/traverse/{returnType}{?pageSize,leaseTime}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/all", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/8615721/relationships/in/{-list|&|types}" } ] 7. 通过查询寻找节点（后面说） 8. 给定node和key从index删除所有条目 # curl -i -H "Accept: application/json" -X DELETE http://127.0.0.1:7474/db/data/index/node/xuhh/k1/8615721 HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) 9. 给定node，key和value从index删除所有条目 # curl -i -H "Accept: application/json" -X DELETE http://127.0.0.1:7474/db/data/index/node/xuhh/k1/v1/8615721 HTTP/1.1 204 No Content Access-Control-Allow-Origin: * Server: Jetty(6.1.25) 五．自动索引 Neo4j为node和relationships提供了一个单独的index，当数据库元素发生增删改时，自动跟踪属性值。这种功能称为自动索引，可以通过数据库配置文件和API方式控制。 默认情况下，node和relationships的自动索引是不启用的。要启用更改neo4j.properties配置文件： # Enable auto-indexing for nodes, default is false node_auto_indexing=true # The node property keys to be auto-indexed, if enabled node_keys_indexable=uid,mobile,guid //根据实际情况更改 # Enable auto-indexing for relationships, default is false #relationship_auto_indexing=true # The relationship property keys to be auto-indexed, if enabled #relationship_keys_indexable=name,age //根据实际情况更改 # curl -i -H "Accept: applicaiont/json" -XGET http://127.0.0.1:7474/db/data/index/node/node_auto_index/uid?query=30408476 HTTP/1.1 200 OK Content-Length: 1259 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ { "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/9258174/relationships/out", "data" : { "uid" : 30408476, "show" : 1, "mobile" : "8615885057075" }, "traverse" : "http://127.0.0.1:7474/db/data/node/9258174/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/9258174/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/9258174/properties/{key}", "self" : "http://127.0.0.1:7474/db/data/node/9258174", "properties" : "http://127.0.0.1:7474/db/data/node/9258174/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/9258174/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/9258174/relationships/in", "extensions" : { }, "create_relationship" : "http://127.0.0.1:7474/db/data/node/9258174/relationships", "paged_traverse" : "http://127.0.0.1:7474/db/data/node/9258174/paged/traverse/{returnType}{?pageSize,leaseTime}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/9258174/relationships/all", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/9258174/relationships/in/{-list|&|types}" } ] 1. 为nodes创建自动索引 # curl –i -H “Accept: application/json” -H “Content-Type: application/json” -d ‘{“name”:”node_auto_index”,”config”:{“type”:”fulltext”,”provider”:”lucene”}}’ http://127.0.0.1:7474/db/data/index/node/ 2. 为relationships创建自动索引 # curl -i -H “Accept: application/json” -H “Content-Type: application/json” -d ‘{“name”:”relationship_auto_index”,”config”:{“type”:”fulltext”,”provider”:”lucene”}}’ http://127.0.0.1:7474/db/data/index/relationship/ 3. 获取当前nodes节点索引状态 # curl -i -H "Accept: applicaiont/json" -XGET http://127.0.0.1:7474/db/data/index/auto/node/status HTTP/1.1 200 OK Content-Length: 4 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) true 4．更改node索引状态 # curl -i -H "Accept: applicaiont/json" -H “Content-Type: application/json” -d “false” –X PUT http://127.0.0.1:7474/db/data/index/auto/node/status //false关闭，true启动 5. 获取当前relationship索引状态 # curl -i -H "Accept: applicaiont/json" -XGET http://127.0.0.1:7474/db/data/index/auto/relationship/status HTTP/1.1 200 OK Content-Length: 5 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) false 6．更改node索引状态 # curl -i -H "Accept: applicaiont/json" -H “Content-Type: application/json” -d “false” –X PUT http://127.0.0.1:7474/db/data/index/auto/relationship/status //false关闭，true启动 7. 查找node自动索引属性(键) # curl -i -H "Accept: applicaiont/json" -XGET http://127.0.0.1:7474/db/data/index/auto/node/properties HTTP/1.1 200 OK Content-Length: 27 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ "uid", "guid", "mobile" ] 8. 查找relationship自动索引属性(键) # curl -i -H "Accept: applicaiont/json" -XGET http://127.0.0.1:7474/db/data/index/auto/relationship/properties //空，未定义 HTTP/1.1 200 OK Content-Length: 3 Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Server: Jetty(6.1.25) [ ] 9. 更改node自动索引属性(键) （服务重启后失效） # curl -i -H "Content-Type: application/json" -H "Accept: application/json" -d "property_key" -XPOST http://127.0.0.1:7474/db/data/index/auto/node/properties //添加 # curl -i -H "Accept: application/json" -d "property_key" -X DELETE http://127.0.0.1:7474/db/data/index/auto/node/properties //删除 10. 更改relationship自动索引属性(键) （服务重启后失效） # curl -i -H "Content-Type: application/json" -H "Accept: application/json" -d "property_key" -XPOST http://127.0.0.1:7474/db/data/index/auto/relationship/properties //添加 # curl -i -H "Accept: application/json" -d "property_key" -X DELETE http://127.0.0.1:7474/db/data/index/auto/relationship/properties //删除 六． 遍历（Traversals） 遍历从一个node开始执行，由URI和请求的主体控制。 returnType: 在响应对象中以traverse/{returnType}构成URL。 returnType值有一下之一： node relationship path: 包含起始和终止节点的完整描述，其余是URIs。 fullpath: 包含所有nodes和replications的完整描述。 要决定在图数据库中如何遍历的，可在请求体中设置如下参数： order: 决定访问nodes顺序，值有breadth_first(BFS广论优先搜索), depth_first(DFS深度优先搜索) relationships: 决定何种关系类型和关系方向，方向值有all，in，out uniqueness: 决定如何计算唯一性，值有node_global, nono, relationship_global, node_path, relationship_path prune_evaluator(修剪评判者): 决定traverser是否继续沿着这条path接着走或是被修剪不需要继续沿着这条path走下去。你可以none内置的修剪评判者写自己的修剪评判者。 return_filter: 决定当前位置是否应该包含在结果中。可以使用自己的过滤代码或使用内置过滤器all，all_but_start_node。 max_depth: 指定到达多少深度后修剪评判者开始修剪。如果没有指定最大深度是1，如果指定prune_evaluator代替了max_depth，将没有设置最大深度限制。 七. 内置的图论算法 Neo4j内置了一些图形算法，从起始节点执行。遍历由URI和请求的主体来控制。 algorithm: 默认算法是shortestPath。 算法有： shortestPath allSimplePaths allPaths dijkstra(参数有cost_property，default_cost) max_depth: 最大深度，默认为1，像ShortestPath算法。 八．批处理 将多条API调用并行到单个HTTP调用，显著提高大量插入和更新操作性能。要执行的任务需是以JSON格式的，整个过程是事务的，任何一条操作执行失败(返回HTTP状态码非2XX)都将回滚。 任务描述格式需要包含to和method属性。to属性值是相对于数据API根，method属性值是HTTP请求方法。如： [{“method” : ”PUT”, ”to” : “/node/0/properties”, ”body” : {“age” :1 }, “id” : 0}] 解释如下：键是关键字。 “method” : ”PUT” : HTTP方法 ”to” : “/node/0/properties” : 目的RUL ”body” : {“age” :1 } : 请求体。请求体中的值是json格式的。 “id” : 0 : 请求ID，用以标示的，在同一个批处理中，{[job id]}做为特殊语法在子任务中注入。 <?php $json = array(array("method" => "POST", "to" => "/node", "body" => array("name" => "Tech department","lead" => "Mr. Wu"),"id" => 0), array("method" => "GET", "to" => "{0}/proterties", "id" => 1) ); var_dump(json_encode($json)); ?> # curl -i -H "Accept: application/json" -H "Conten-Type: applicatin/json" -XPOST -d '[{"method":"POST","to":"/node","body":{"name":"Tech department","lead":"Mr. Wu"},"id":0},{"method":"GET","to":"{0}/properties","id":1}]' http://127.0.0.1:7474/db/data/batch HTTP/1.1 200 OK Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Transfer-Encoding: chunked Server: Jetty(6.1.25) [{"id":0,"location":"http://127.0.0.1:7474/db/data/node/3385","body":{ "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/3385/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/3385/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/3385/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3385/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/3385/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/3385/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/3385", "properties" : "http://127.0.0.1:7474/db/data/node/3385/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3385/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/3385/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3385/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/3385/relationships", "data" : { "name" : "Tech department", "lead" : "Mr. Wu" } },"from":"/node"}, {"id":1,"body":{ "lead" : "Mr. Wu", "name" : "Tech department" },"from":"http://127.0.0.1:7474/db/data/node/3385/properties"}] <?php $json = array(array("method" => "POST", "to" => "/node", "body" => array("name" => "Tech department","lead" => "Mr. Wu"),"id" => 0), array("method" => "GET", "to" => "{0}", "id" => 1), array("method" => "GET", "to" => "{0}/relationships/all", "id" => 2), array("method" => "POST", "to" => "/node", "body" => array("name" => "Web Ops"), "id" => 3), array("method" => "GET", "to" => "{3}", "id" => 4), array("method" => "GET", "to" => "{3}/relationships/all", "id" => 5), array("method" => "POST", "to" => "{0}/relationships", "body" => array("to" => "{3}", "type" => "DEPT", "data" => array("lead" => "Mr. Wu")), "id" => 6), array("method" => "GET", "to" => "{0}/relationships/all", "id" => 7), array("method" => "GET", "to" => "{3}/relationships/all", "id" => 8) ); var_dump(json_encode($json)); ?> # curl -i -H "Accept: application/json" -H "Conten-Type: applicatin/json" -XPOST -d '[{"method":"POST","to":"/node","body":{"name":"Tech department","lead":"Mr. Wu"},"id":0},{"method":"GET","to":"{0}","id":1},{"method":"GET","to":"{0}/relationships/all","id":2},{"method":"POST","to":"/node","body":{"name":"Web Ops"},"id":3},{"method":"GET","to":"{3}","id":4},{"method":"GET","to":"{3}/relationships/all","id":5},{"method":"POST","to":"{0}/relationships","body":{"to":"{3}","type":"DEPT","data":{"lead":"Mr. Wu"}},"id":6},{"method":"GET","to":"{0}/relationships/all","id":7},{"method":"GET","to":"{3}/relationships/all","id":8}]' http://127.0.0.1:7474/db/data/batch HTTP/1.1 200 OK Content-Encoding: UTF-8 Content-Type: application/json Access-Control-Allow-Origin: * Transfer-Encoding: chunked Server: Jetty(6.1.25) [{"id":0,"location":"http://127.0.0.1:7474/db/data/node/3386","body":{ "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/3386/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/3386/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/3386/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/3386", "properties" : "http://127.0.0.1:7474/db/data/node/3386/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/3386/relationships", "data" : { "name" : "Tech department", "lead" : "Mr. Wu" } },"from":"/node"}, {"id":1,"body":{ "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/3386/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/3386/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/3386/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/3386", "properties" : "http://127.0.0.1:7474/db/data/node/3386/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3386/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/3386/relationships", "data" : { "name" : "Tech department", "lead" : "Mr. Wu" } },"from":"http://127.0.0.1:7474/db/data/node/3386"}, {"id":2,"body":[ ],"from":"http://127.0.0.1:7474/db/data/node/3386/relationships/all"}, {"id":3,"location":"http://127.0.0.1:7474/db/data/node/3387","body":{ "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/3387/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/3387/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/3387/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/3387", "properties" : "http://127.0.0.1:7474/db/data/node/3387/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/3387/relationships", "data" : { "name" : "Web Ops" } },"from":"/node"}, {"id":4,"body":{ "extensions" : { }, "paged_traverse" : "http://127.0.0.1:7474/db/data/node/3387/paged/traverse/{returnType}{?pageSize,leaseTime}", "outgoing_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/out", "traverse" : "http://127.0.0.1:7474/db/data/node/3387/traverse/{returnType}", "all_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/all/{-list|&|types}", "property" : "http://127.0.0.1:7474/db/data/node/3387/properties/{key}", "all_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/all", "self" : "http://127.0.0.1:7474/db/data/node/3387", "properties" : "http://127.0.0.1:7474/db/data/node/3387/properties", "outgoing_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/out/{-list|&|types}", "incoming_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/in", "incoming_typed_relationships" : "http://127.0.0.1:7474/db/data/node/3387/relationships/in/{-list|&|types}", "create_relationship" : "http://127.0.0.1:7474/db/data/node/3387/relationships", "data" : { "name" : "Web Ops" } },"from":"http://127.0.0.1:7474/db/data/node/3387"}, {"id":5,"body":[ ],"from":"http://127.0.0.1:7474/db/data/node/3387/relationships/all"}, {"id":6,"location":"http://127.0.0.1:7474/db/data/relationship/8096","body":{ "extensions" : { }, "start" : "http://127.0.0.1:7474/db/data/node/3386", "property" : "http://127.0.0.1:7474/db/data/relationship/8096/properties/{key}", "self" : "http://127.0.0.1:7474/db/data/relationship/8096", "properties" : "http://127.0.0.1:7474/db/data/relationship/8096/properties", "type" : "DEPT", "end" : "http://127.0.0.1:7474/db/data/node/3387", "data" : { "lead" : "Mr. Wu" } },"from":"http://127.0.0.1:7474/db/data/node/3386/relationships"}, {"id":7,"body":[ { "start" : "http://127.0.0.1:7474/db/data/node/3386", "data" : { "lead" : "Mr. Wu" }, "self" : "http://127.0.0.1:7474/db/data/relationship/8096", "property" : "http://127.0.0.1:7474/db/data/relationship/8096/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/8096/properties", "type" : "DEPT", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/3387" } ],"from":"http://127.0.0.1:7474/db/data/node/3386/relationships/all"}, {"id":8,"body":[ { "start" : "http://127.0.0.1:7474/db/data/node/3386", "data" : { "lead" : "Mr. Wu" }, "self" : "http://127.0.0.1:7474/db/data/relationship/8096", "property" : "http://127.0.0.1:7474/db/data/relationship/8096/properties/{key}", "properties" : "http://127.0.0.1:7474/db/data/relationship/8096/properties", "type" : "DEPT", "extensions" : { }, "end" : "http://127.0.0.1:7474/db/data/node/3387" } ],"from":"http://127.0.0.1:7474/db/data/node/3387/relationships/all"}] 九．Cypher插件（参考Cypher语言，后面再说） 十．Gremlin插件（小妖精插件） Gremlin是一个基于Groovy的图遍历语言，提供一个非常明确的脚本来遍历图的表达方式。 Neo4j的Gremlin插件提供了一个端点向Neo4j服务发送Gremlin脚本。该脚本在数据库上执行，node和relationship表示作为结果返回或只返回指定属性。与REST API类型保持一致。