Spring Boot DATA JPA抓取SQL运行时的传递进去的参数信息

在系统开发过程中，涉及到数据库操作都是SQL的天下，基于ORM的各类框架来简化开发；在JPA/Hibernate方案中，只提供了SQL的打印输出，但并未输入SQL的参数值是多少，这里将解决这个问题，告知具体如何来实现这个操作。

1. 技术栈的介绍

JDK 1.8, Spring Boot 2.0.3.RELEASE, Mysql 5.7

2. 依赖包

Spring Boot中的JPA依赖包：

<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter</artifactId>
</dependency>
<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId>
</dependency><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-test</artifactId><scope>test</scope>
</dependency>
<dependency><groupId>mysql</groupId><artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency><groupId>com.googlecode.log4jdbc</groupId><artifactId>log4jdbc</artifactId><version>1.2</version>
</dependency>

3. log4jdbc的介绍

log4jdbc使用SLF4J（Simple Logging Facade For Java）作为日志系统。特性：

支持JDBC3和JDBC4，其中JDBC3对应于JDK 1.4 or 1.5，JDBC4要求JDK 1.6或以上。
支持现有大部分JDBC驱动。
易于配置（在大部分情况下，只需要改变驱动类名并在jdbc url前加上”jdbc:log4“，设置好日志输出级别）。
能够自动把SQL变量值加到SQL输出日志中，改进易读性和方便调试。
能够快速标识出应用程序中执行比较慢的SQL语句。
能够生成SQL连接数信息帮助识别连接池/线程问题。

综合一句话，log4jdbc可以帮我们实现一个抓取SQL中实际使用值的功能。

4. Spring Boot示例

application.properties内容：

spring.datasource.driver-class-name = net.sf.log4jdbc.DriverSpy
spring.datasource.url= jdbc:log4jdbc:mysql://127.0.0.1:3306/demo?useUnicode=yes&characterEncoding=UTF-8&useSSL=false
spring.datasource.username = root
spring.datasource.password = 123123
spring.datasource.type=com.zaxxer.hikari.HikariDataSource
spring.datasource.initialization-mode=neverspring.datasource.hikari.minimum-idle=0
spring.datasource.hikari.idle-timeout=10800000
spring.datasource.hikari.max-lifetime=21600000
spring.datasource.hikari.connection-timeout=6000
spring.datasource.hikari.initialization-fail-timeout=0
spring.datasource.hikari.data-source-properties.useUnicode=true
spring.datasource.hikari.data-source-properties.characterEncoding=utf8
spring.datasource.hikari.data-source-properties.useSSL=false
spring.datasource.hikari.data-source-properties.cachePrepStmts=true
spring.datasource.hikari.data-source-properties.prepStmtCacheSize=512
spring.datasource.hikari.data-source-properties.allowMultiQueries=true
spring.datasource.hikari.data-source-properties.useLocalSessionState=true
spring.datasource.hikari.data-source-properties.prepStmtCacheSqlLimit=81920
spring.datasource.hikari.data-source-properties.rewriteBatchedStatements=false
spring.datasource.hikari.data-source-properties.useOldAliasMetadataBehavior=true
spring.datasource.hikari.data-source-properties.createDatabaseIfNotExist=truespring.jpa.open-in-view=false
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.hbm2ddl.import_files=data.sql
spring.jpa.show-sql=true

这里需要注意的是mysql的原来的驱动程序.driver-class-name 和mysql的url

spring.datasource.driver-class-name = net.sf.log4jdbc.DriverSpy
spring.datasource.url= jdbc:log4jdbc:mysql://127.0.0.1:3306/demo?useUnicode=yes&characterEncoding=UTF-8&useSSL=false

将被 net.sf.log4jdbc.DriverSpy来替代，可以理解为DriverSpy做为mysql驱动的代理来捕捉SQL的信息。

数据库连接的URL需要进行修改为：

原来的： jdbc:mysql://localhost:3306/mealsystem

现在的： jdbc:log4jdbc:mysql://localhost:3306/mealsystem

除此之外，无需额外的变化需求，其余代码都一致即可获得运行中的SQL信息。

2018-09-04 11:18:52.429  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.isValid(5) returned true
2018-09-04 11:18:52.429  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.getAutoCommit() returned true
2018-09-04 11:18:52.429  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.setAutoCommit(false) returned
Hibernate: select userpo0_.id as id1_0_0_, userpo0_.address as address2_0_0_, userpo0_.books as books3_0_0_, userpo0_.name as name4_0_0_, userpo0_.phone as phone5_0_0_ from user userpo0_ where userpo0_.id=?
2018-09-04 11:18:52.468  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.new PreparedStatement returned
2018-09-04 11:18:52.468  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.prepareStatement(select userpo0_.id as id1_0_0_, userpo0_.address as address2_0_0_, userpo0_.books as books3_0_0_, userpo0_.name as name4_0_0_, userpo0_.phone as phone5_0_0_ from user userpo0_ where userpo0_.id=?) returned net.sf.log4jdbc.PreparedStatementSpy@810bf7d
2018-09-04 11:18:52.475  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.setInt(1, 1) returned
2018-09-04 11:18:52.477  INFO 10184 --- [nio-8081-exec-2] jdbc.sqlonly                             : select userpo0_.id as id1_0_0_, userpo0_.address as address2_0_0_, userpo0_.books as books3_0_0_,
userpo0_.name as name4_0_0_, userpo0_.phone as phone5_0_0_ from user userpo0_ where userpo0_.id=1 2018-09-04 11:18:52.478  INFO 10184 --- [nio-8081-exec-2] jdbc.sqltiming                           : select userpo0_.id as id1_0_0_, userpo0_.address as address2_0_0_, userpo0_.books as books3_0_0_,
userpo0_.name as name4_0_0_, userpo0_.phone as phone5_0_0_ from user userpo0_ where userpo0_.id=1 {executed in 1 msec}
2018-09-04 11:18:52.481  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.new ResultSet returned
2018-09-04 11:18:52.481  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.executeQuery() returned net.sf.log4jdbc.ResultSetSpy@2bb7b913
2018-09-04 11:18:52.489  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.next() returned true
2018-09-04 11:18:52.498  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.getString(address2_0_0_) returned bj0
2018-09-04 11:18:52.498  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.wasNull() returned false
2018-09-04 11:18:52.498  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.getString(books3_0_0_) returned [{"name": "c++", "price": 53.9}, {"name": "java", "price": 100}]
2018-09-04 11:18:52.498  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.wasNull() returned false
2018-09-04 11:18:52.538  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.getString(name4_0_0_) returned xiaoming
2018-09-04 11:18:52.538  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.wasNull() returned false
2018-09-04 11:18:52.538  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.getString(phone5_0_0_) returned ["15510062270", "15516676760"]
2018-09-04 11:18:52.538  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.wasNull() returned false
2018-09-04 11:18:52.543  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.next() returned false
2018-09-04 11:18:52.575  INFO 10184 --- [nio-8081-exec-2] jdbc.resultset                           : 2. ResultSet.close() returned
2018-09-04 11:18:52.576  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.getMaxRows() returned 0
2018-09-04 11:18:52.576  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.getQueryTimeout() returned 0
2018-09-04 11:18:52.576  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.close() returned
Hibernate: update user set address=?, books=?, name=?, phone=? where id=?
2018-09-04 11:18:52.596  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.new PreparedStatement returned
2018-09-04 11:18:52.596  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.prepareStatement(update user set address=?, books=?, name=?, phone=? where id=?) returned net.sf.log4jdbc.PreparedStatementSpy@741f652
2018-09-04 11:18:52.596  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.setString(1, "bj0") returned
2018-09-04 11:18:52.597  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.setString(2, "[{"name":"c++","price":53.9},{"name":"java","price":100.0}]") returned
2018-09-04 11:18:52.597  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.setString(3, "xiaoming") returned
2018-09-04 11:18:52.597  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.setString(4, "["15510062270","15516676760"]") returned
2018-09-04 11:18:52.597  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.setInt(5, 1) returned
2018-09-04 11:18:52.597  INFO 10184 --- [nio-8081-exec-2] jdbc.sqlonly                             : update user set address='bj0', books='[{"name":"c++","price":53.9},{"name":"java","price":100.0}]',
name='xiaoming', phone='["15510062270","15516676760"]' where id=1 2018-09-04 11:18:52.598  INFO 10184 --- [nio-8081-exec-2] jdbc.sqltiming                           : update user set address='bj0', books='[{"name":"c++","price":53.9},{"name":"java","price":100.0}]',
name='xiaoming', phone='["15510062270","15516676760"]' where id=1 {executed in 1 msec}
2018-09-04 11:18:52.598  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.executeUpdate() returned 1
2018-09-04 11:18:52.598  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.getMaxRows() returned 0
2018-09-04 11:18:52.598  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.getQueryTimeout() returned 0
2018-09-04 11:18:52.598  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. PreparedStatement.close() returned
2018-09-04 11:18:52.605  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.commit() returned
2018-09-04 11:18:52.605  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.setAutoCommit(true) returned
2018-09-04 11:18:52.607  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.clearWarnings() returned
2018-09-04 11:18:52.607  INFO 10184 --- [nio-8081-exec-2] jdbc.audit                               : 2. Connection.clearWarnings() returned

可以发现其select和update语句是有具体的值存在的，额外还有执行所使用的时间。

2018-09-04 11:18:52.478  INFO 10184 --- [nio-8081-exec-2] jdbc.sqltiming                           : select userpo0_.id as id1_0_0_, userpo0_.address as address2_0_0_, userpo0_.books as books3_0_0_,
userpo0_.name as name4_0_0_, userpo0_.phone as phone5_0_0_ from user userpo0_ where userpo0_.id=1 {executed in 1 msec}2018-09-04 11:18:52.598  INFO 10184 --- [nio-8081-exec-2] jdbc.sqltiming                           : update user set address='bj0', books='[{"name":"c++","price":53.9},{"name":"java","price":100.0}]',
name='xiaoming', phone='["15510062270","15516676760"]' where id=1 {executed in 1 msec}

6. 参考资料

http://www.cnblogs.com/xdp-gacl/p/4081848.html
http://my.oschina.net/kzhou/blog/149532

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