基于jersey的web service

本文是基于jersey的web service 的两个小例子，一个GET请求，一个POST请求

项目结构图如下：



build.gradle文件内容如下：

apply plugin: "java"
apply plugin: "idea"

idea {
    module {
        downloadSources = true
        downloadJavadoc = true
    }

}

repositories {
    mavenCentral()
    mavenLocal()
}

dependencies {
    compile 'com.sun.jersey:jersey-core:1.19'
    compile 'com.sun.jersey:jersey-server:1.19'
    compile 'com.sun.jersey:jersey-client:1.19'
    compile 'com.sun.jersey:jersey-json:1.19'
    compile 'com.sun.jersey:jersey-bundle:1.19'
    compile 'asm:asm:3.3.1'

}

HelloService.java代码如下：

package com.test.service;

import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;

/**
 * Created by yangjianzhou on 15-11-22.
 */


@Path("/test")
public class HelloService {

    @GET
    @Path("/hello")
    @Produces(MediaType.APPLICATION_JSON)
    public String hello(@QueryParam("name") String name) {
        return "GET METHOD : " + name;
    }

    @POST
    @Path("/greet")
    @Produces(MediaType.APPLICATION_JSON)
    public String greet(@FormParam("name") String name) {
        return "POST METHOD : " + name;
    }
}

TestHelloService.java代码如下：

package com.test.service;

import com.sun.jersey.api.client.Client;
import com.sun.jersey.api.client.WebResource;
import com.sun.jersey.core.util.MultivaluedMapImpl;

import javax.ws.rs.core.MediaType;
import java.net.URI;

/**
 * Created by yangjianzhou on 15-11-22.
 */
public class TestHelloService {

    public static void main(String[] args) throws Exception{
        testHello();
        testGreet();
    }

    public static void testHello() throws Exception{
        Client client = Client.create();
        URI uri = new URI("http://localhost:8080/jerseyTest/service/test/hello?name=yangjianzhou");
        WebResource resource = client.resource(uri);
        String result = resource.get(String.class);
        System.out.println(result);
    }

    public static void testGreet() throws Exception{
        Client client = Client.create();
        URI uri = new URI("http://localhost:8080/jerseyTest/service/test/greet");
        WebResource resource = client.resource(uri);
        MultivaluedMapImpl params = new MultivaluedMapImpl();
        params.add("name" , "yangjianzhou");
        String result = resource.queryParams(params).type(MediaType.APPLICATION_FORM_URLENCODED_TYPE).post(String.class);
        System.out.println(result);
    }
}

web.xml代码如下：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
           xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
		  http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
           version="3.0">

    <servlet>
        <servlet-name>rest</servlet-name>
        <servlet-class>com.sun.jersey.spi.container.servlet.ServletContainer</servlet-class>
        <init-param>
            <param-name>com.sun.jersey.config.property.package</param-name>
            <param-value>com.test</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    
    <servlet-mapping>
        <servlet-name>rest</servlet-name>
        <url-pattern>/service/*</url-pattern>
    </servlet-mapping>
</web-app>

将应用jerseyTest部署到tomcat中，运行TestHelloService.java

输出结果如下：