var JDBCClient = require("vertx-jdbc-js/jdbc_client"); var Router = require("vertx-web-js/router"); var BodyHandler = require("vertx-web-js/body_handler"); var client; var setUpInitialData = function(done) { client.getConnection(function (res, res_err) { if (res_err != null) { throw res_err; } var conn = res; conn.execute("CREATE TABLE IF NOT EXISTS products(id INT IDENTITY, name VARCHAR(255), price FLOAT, weight INT)", function (ddl, ddl_err) { if (ddl_err != null) { throw ddl_err; } conn.execute("INSERT INTO products (name, price, weight) VALUES ('Egg Whisk', 3.99, 150), ('Tea Cosy', 5.99, 100), ('Spatula', 1.00, 80)", function (fixtures, fixtures_err) { if (fixtures_err != null) { throw fixtures_err; } done.handle(null); }); }); }); }; var that = this; // Create a JDBC client with a test database client = JDBCClient.createShared(vertx, { "url" : "jdbc:hsqldb:mem:test?shutdown=true", "driver_class" : "org.hsqldb.jdbcDriver" }); setUpInitialData(function (ready) { var router = Router.router(vertx); router.route().handler(BodyHandler.create().handle); // in order to minimize the nesting of call backs we can put the JDBC connection on the context for all routes // that match /products // this should really be encapsulated in a reusable JDBC handler that uses can just add to their app router.route("/products*").handler(function (routingContext) { client.getConnection(function (res, res_err) { if (res_err != null) { routingContext.fail(res_err); } else { var conn = res; // save the connection on the context routingContext.put("conn", conn); // we need to return the connection back to the jdbc pool. In order to do that we need to close it, to keep // the remaining code readable one can add a headers end handler to close the connection. The reason to // choose the headers end is that if the close of the connection or say for example end of transaction // results in an error, it is still possible to return back to the client an error code and message. routingContext.addHeadersEndHandler(function (done) { conn.close(function (close, close_err) { if (close_err != null) { done.fail(close_err); } else { done.complete(); } }); }); routingContext.next(); } }); }).failureHandler(function (routingContext) { var conn = routingContext.get("conn"); if (conn !== null) { conn.close(function (v, v_err) { }); } }); router.get("/products/:productID").handler(that.handleGetProduct); router.post("/products").handler(that.handleAddProduct); router.get("/products").handler(that.handleListProducts); vertx.createHttpServer().requestHandler(router.accept).listen(8080); });
Vertx js版 Jdbc操作 官网Demo
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转载自harborchung.iteye.com/blog/2229599
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