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。

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