Restful API 简单示例--HelloWorld

Restful API 简单示例--HelloWorld

1. 环境
(1). j2ee luna
(2). Tomcat7
(3). Jersey2.24 (jaxrs-ri-2.24.zip)


2. 流程
(1). 创建DynamicWebProj, eg: RestfulWs_01
(2). 解压jaxrs-ri-2.24.zip,将api/ext/lib文件价下的jar拷贝到WEB-INF/lib下
(3). 新建包com.tsh.rest.resources
(4). 创建类


package com.waylau.rest.resources;


import javax.ws.rs.GET;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
import javax.ws.rs.core.MediaType;


@Path("/hello")
public class HelloResource {
@GET
@Produces(MediaType.TEXT_PLAIN)
public String sayHello() {
return "Hello world from tsh";
}

@GET
@Path("/{param}")
@Produces("text/plain;charset=UTF-8") 
public String sayHelloToUTF8(@PathParam("param") String username) {
return "tHello " + username;
}

}

(5) 修改web.xml
<?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" 
xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee" id="WebApp_ID" version="2.5"> 
<display-name>RESTfulWS</display-name> 
<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.tsh.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>


(6). 部署至tomcat，并运行tomcat
(7). 浏览器访问：
http://localhost:8080/RestfulWs_01/rest/hello
http://localhost:8080/RestfulWs_01/rest/hello/1
http://localhost:8080/RestfulWs_01/rest/hello/2
http://localhost:8080/RestfulWs_01/rest/hello/5



摘自：http://blog.csdn.net/kkkloveyou/article/details/21391033