└── guide└── restful_service└── order_mgt_service.bal

cd  guide &&   ballerina init

import ballerina/http;
import ballerinax/docker;// docker 支持配置
@docker:Config {registry:"dalongrong",name:"restful_service",tag:"v1.0"
}
endpoint http:Listener listener {port:9090
};// Order management is done using an in memory map.
// Add some sample orders to 'ordersMap' at startup.
map<json> ordersMap;// RESTful service.
@http:ServiceConfig { basePath: "/ordermgt" }
service<http:Service> orderMgt bind listener {// Resource that handles the HTTP GET requests that are directed to a specific// order using path '/order/<orderId>'.@http:ResourceConfig {methods: ["GET"],path: "/order/{orderId}"}findOrder(endpoint client, http:Request req, string orderId) {// Find the requested order from the map and retrieve it in JSON format.json? payload = ordersMap[orderId];http:Response response;if (payload == null) {payload = "Order : " + orderId + " cannot be found.";}// Set the JSON payload in the outgoing response message.response.setJsonPayload(untaint payload);// Send response to the client._ = client->respond(response);}// Resource that handles the HTTP POST requests that are directed to the path// '/order' to create a new Order.@http:ResourceConfig {methods: ["POST"],path: "/order"}addOrder(endpoint client, http:Request req) {json orderReq = check req.getJsonPayload();string orderId = orderReq.Order.ID.toString();ordersMap[orderId] = orderReq;// Create response message.json payload = { status: "Order Created.", orderId: orderId };http:Response response;response.setJsonPayload(untaint payload);// Set 201 Created status code in the response message.response.statusCode = 201;// Set 'Location' header in the response message.// This can be used by the client to locate the newly added order.response.setHeader("Location", "http://localhost:9090/ordermgt/order/" +orderId);// Send response to the client._ = client->respond(response);}// Resource that handles the HTTP PUT requests that are directed to the path// '/order/<orderId>' to update an existing Order.@http:ResourceConfig {methods: ["PUT"],path: "/order/{orderId}"}updateOrder(endpoint client, http:Request req, string orderId) {json updatedOrder = check req.getJsonPayload();// Find the order that needs to be updated and retrieve it in JSON format.json existingOrder = ordersMap[orderId];// Updating existing order with the attributes of the updated order.if (existingOrder != null) {existingOrder.Order.Name = updatedOrder.Order.Name;existingOrder.Order.Description = updatedOrder.Order.Description;ordersMap[orderId] = existingOrder;} else {existingOrder = "Order : " + orderId + " cannot be found.";}http:Response response;// Set the JSON payload to the outgoing response message to the client.response.setJsonPayload(untaint existingOrder);// Send response to the client._ = client->respond(response);}// Resource that handles the HTTP DELETE requests, which are directed to the path// '/order/<orderId>' to delete an existing Order.@http:ResourceConfig {methods: ["DELETE"],path: "/order/{orderId}"}cancelOrder(endpoint client, http:Request req, string orderId) {http:Response response;// Remove the requested order from the map._ = ordersMap.remove(orderId);json payload = "Order : " + orderId + " removed.";// Set a generated payload with order status.response.setJsonPayload(untaint payload);// Send response to the client._ = client->respond(response);}
}

ballerina run restful_service

post 数据
curl -v -X POST -d \
'{ "Order": { "ID": "100500", "Name": "XYZ", "Description": "Sample order."}}' \
"http://localhost:9090/ordermgt/order" -H "Content-Type:application/json"get
curl -i http://localhost:9090/ordermgt/order/100500

ballerina build restful_service

# Auto Generated Dockerfile
FROM ballerina/ballerina:0.982.0
LABEL maintainer="dev@ballerina.io"
COPY restful_service.balx /home/ballerina
CMD ballerina run restful_service.balx

docker run -d -p 9090:9090 dalongrong/restful_service:v1.0