用Jersey构建RESTful服务

一：环境

1、Tomcat 7
2. Jersey 2.26 下载地址（ https://jersey.java.net/download.html）

二：流程

1.Eclipse 中创建一个 Dynamic Web Project ,本例为“RestfulDemo”

一路next到第三步时记得勾选

2、新建一个包

4.将下载的jesrey的文件全部放在lib文件下

5、在resources包下建一个class“HelloResource”

package com.chenll.rest.resources;import javax.ws.rs.GET;  import javax.ws.rs.Path;  import javax.ws.rs.Produces;  import javax.ws.rs.PathParam;  import javax.ws.rs.core.MediaType; @Path("/hello") public class HelloResource {    @GET      @Produces(MediaType.TEXT_PLAIN)      public String sayHello() {          return "Hello World!" ;      }      @GET      @Path("/{param}")        @Produces("text/plain;charset=UTF-8")      public String sayHelloToUTF8(@PathParam("param") String username) {          return "Hello " + username;      }  }

6、修改web.xml,添加基于Servlet-的部署

<?xml version="1.0" encoding="UTF-8"?><web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">  <display-name>RestfulDemo</display-name>  <welcome-file-list>    <welcome-file>index.html</welcome-file>    <welcome-file>index.htm</welcome-file>    <welcome-file>index.jsp</welcome-file>    <welcome-file>default.html</welcome-file>    <welcome-file>default.htm</welcome-file>    <welcome-file>default.jsp</welcome-file>  </welcome-file-list>   <servlet>       <servlet-name>Way REST Service</servlet-name> <servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>       <init-param>  <param-name>jersey.config.server.provider.packages</param-name>      <param-value>com.chenll.rest.resources</param-value>      </init-param>    <load-on-startup>1</load-on-startup>  </servlet>    <servlet-mapping>    <servlet-name>Way REST Service</servlet-name>    <url-pattern>/rest/*</url-pattern>  </servlet-mapping></web-app>

7.项目部署到tomcat,运行
8.浏览器输入要访问的uri地址

http://localhost:8088/RestfulDemo/rest/hello

http://localhost:8088/RestfulDemo/rest/hello/l浪潮