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("<?xml version=/"1.0/" encoding=/"UTF-8/"?>");
                out.println("<customer>");
                out.println("<firstname>" + details[0] + "</firstname>");
                out.println("<lastname>" + details[1] + "</lastname>");
                out.println("<zipcode>" + details[2] + "</zipcode>");
                out.println("</customer>");
                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。
[java] view plain copy 在CODE上查看代码片派生到我的代码片
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