jersey获取各个参数的总结

service端：

@Path("/hello")
public class HelloService {
	@GET
	@Produces("text/plain")
	public String helloWorld(){
		return "hello world";
	}
	/*
	 * post param  test
	 */
	@POST   
	@Path("echo")
	@Consumes("application/x-www-form-urlencoded")  
	public String echo(@FormParam("msg") String msg){
		return "are you say "+msg;
	}
	/*
	 * get param test
	 */
	@GET
	@Path("sex")
	@Produces("text/plain")
	public String getSex(@PathParam("name") String name){
		return "male";
	}
	
	/*
	 * get {} request 
	 * http://houfeng:8080/jerseyWebServiceTest/services/hello/age/houfeng
	 */
	@GET
	@Path("age/{name}")
	@Produces("text/plain")
	public String getAge(@PathParam("name") String name){
		return "18";
	}
	
	
	/*
	 * get {} request
	 * http://houfeng:8080/jerseyWebServiceTest/services/hello/223232323
	 */
	@GET
	@Path ("{id}")
	@Produces ("application/xml")
	public StreamingOutput retrieveCustomer(@PathParam ("id") String customerId) {
	    String customerDetails = "hou,feng,232"; 
		final String[] details = customerDetails.split(","); 
		return new StreamingOutput() {  
			public void write(OutputStream outputStream) {  
				PrintWriter out = new PrintWriter(outputStream);
		        out.println("");
		        out.println("");
		        out.println("" + details[0] + "");
		        out.println("" + details[1] + "");
		        out.println("" + details[2] + "");
		        out.println("");
		        out.close();
		    } 
		}; 
	}
	
	
	// get  vs  post 
	
	@GET
	@Path("test_get")
	@Produces("text/plain")
	public String getTest1(@PathParam("name") String name, @Context HttpServletRequest request){
		System.out.println("name:"+name);// null
		String result;
		result = request.getParameter("name");
		System.out.println("name="+result); //houfeng
		result+= "--------"+request.getContextPath(); 
		return result;
	}
	
	/*
	 * get 方式 正确的获取参数方法 @QueryParam 或者 用 request； url里有参数的用PathParam
	 */
	@GET
	@Path("test_get2")
	@Produces("text/plain")
	public String getTest11(@QueryParam("name") String name, @Context HttpServletRequest request){
		System.out.println("name:"+name);// houfeng
		String result;
		result = request.getParameter("name");
		System.out.println("name="+result); //houfeng  
		result+= "--------"+request.getContextPath(); 
		return result;
	}
 
	
	@POST
	@Path("test_post1")
	@Consumes("application/x-www-form-urlencoded") 
	@Produces("text/plain")
	public String getTest2(@FormParam("name") String name){ 
		System.out.println(name);//houfeng
		String result=name;  
		return result;
	}
	
	@POST
	@Path("test_post2")
	@Consumes("application/x-www-form-urlencoded") 
	@Produces("text/plain")
	public String getTest22(@QueryParam("name") String name){
		System.out.println("name:"+name);//houfeng,但是有警告。提示用FormParam
		String result = name; 
		return result;
	}
	
	
	@POST
	@Path("test_post3") 
	@Produces("text/plain")
	public String getTest2222(String entity, @Context HttpServletRequest request){
		System.out.println("entity:"+entity);//hello 传入方式：resource.entity("hello").post(String.class);
		String result; 
		result= "--------"+request.getContextPath(); 
		return result;
	}
	
	@POST
	@Path("test_post4")
	//@Consumes("application/xml"),这样就会出错；@Consumes("application/x-www-form-urlencoded") 可以。
	@Produces("text/plain")
	public String getTest22222(InputStream is, @Context HttpServletRequest request) throws Exception{
		byte[] buf = new byte[is.available()];
		is.read(buf);
		System.out.println("buf:"+new String(buf));
		String result; 
		result= "--------"+request.getContextPath(); 
		return result;
	}

客户端可以采用两种方式测试。

1，采用jersey实现的测试api：jersey-twitter-client-1.0-SNAPSHOT-jar-with-dependencies.jar 

2，采用apache httpclient 模拟客户端的各种请求。

上面提到的参考e文中是采用的第二种方式。在这里我使用jersey测试api来实现。

	public  void testHelloService() throws URISyntaxException {
		Client client = Client.create();
		URI u = new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello");
		System.out.println(u);
		WebResource resource = client.resource(u);
		//get
		String result = resource.get(String.class);
		System.out.println(result);
		
		//get param
		u = new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello/sex");
		System.out.println(u);
		resource = client.resource(u);
		MultivaluedMapImpl params = new MultivaluedMapImpl();
		params.add("name", "houfeng");
		result = resource.queryParams(params).get(String.class);
		System.out.println(result);
		
		u =new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello/test_get");
		System.out.println(u);
		resource = client.resource(u);
		params = new MultivaluedMapImpl();
		params.add("name", "houfeng");
		result = resource.queryParams(params).get(String.class);
		System.out.println(result);
		
		u =new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello/test_get2");
		System.out.println(u);
		resource = client.resource(u);
		params = new MultivaluedMapImpl();
		params.add("name", "houfeng");
		result = resource.queryParams(params).get(String.class);
		System.out.println(result);
 
		
		u =new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello/test_post1");
		System.out.println(u);
		resource = client.resource(u);
		params = new MultivaluedMapImpl();
		params.add("name", "houfeng");
		result = resource.type(MediaType.APPLICATION_FORM_URLENCODED).post(String.class,params);
		System.out.println(result);
		
		u =new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello/test_post2");
		System.out.println(u);
		resource = client.resource(u);
		params = new MultivaluedMapImpl();
		params.add("name", "houfeng");
		result = resource.queryParams(params).type(MediaType.APPLICATION_FORM_URLENCODED).post(String.class);
		System.out.println(result);
		
		u =new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello/test_post3");
		System.out.println(u);
		resource = client.resource(u); 
		result = resource.entity("hello").post(String.class);
		System.out.println(result);
		
		u =new URI("http://houfeng:8080/jerseyWebServiceTest/services/hello/test_post4");
		System.out.println(u);
		resource = client.resource(u); 
		String buf = "inputstream content.";
		ByteArrayInputStream bais = new ByteArrayInputStream(buf.getBytes());
		result = resource.entity(bais).post(String.class);
		System.out.println(result);
	}

过程中遇到的问题就是提交流的时候，错误的参考了e文中 “@Consumes ( "application/xml" ) ”的请求类型！ 结果导致service 端 接受请求的方法参数InputStream 得不到内容。换作@Context HttpServeltRequest request 参数也无济于事。于是在网上搜索，在一个国外论坛中有人提到相似的问题“上传文件得不到流里的内容，但是jetty里可以，tomcat里不可以。？”。好像没有太大参考，但我也试了下，还是失败。。。

今天修改提交类型注解为：@Consumes("application/x-www-form-urlencoded") ，测试通过！终于才恍然大悟：application/xml是客户端接受的内容类型。哎，是应该学习下http协议的相关知识，这样的问题耽误了大半天的时间！

    另外，对于jax-ws中几个注解，简单总结下：
       QueryParam--url ? 后面表示的参数  .  get post 通用.
       PathParam---url中的一部分，例如用{}表示的url中的一部分。get post 通用。
       FormParam---post提交的form表单参数。     用于 post