Post 方法在 Android 中的 AsyncHttpClient 中不起作用

Question

您好，我正在使用 java restfull web 服务开发 android 应用这里我在通过 post 方法调用 Web 服务时遇到一个问题 我使用 client.post("") 我的所有值在调用 webservice 时都为空。我不知道为什么会这样。当我使用 client.get("") 它的工作 properly.And 我能够通过 client.get 正确注册。 但是我想用client.post请帮我告诉我我错了什么。

public void registerUser(View view){

    String name = nameET.getText().toString();

    String email = emailET.getText().toString();

    String password = pwdET.getText().toString();

    RequestParams params = new RequestParams();

    if(Utility.isNotNull(name) && Utility.isNotNull(email) && Utility.isNotNull(password)){

        if(Utility.validate(email)){
            control
            params.put("name", name);

            params.put("username", email);

            params.put("password", password);
            // Invoke RESTful Web Service with Http parameters
            invokeWS(params);
        }
   }

public void invokeWS(RequestParams params){
    System.out.println("params=====  "+params);

    prgDialog.show();

**AsyncHttpClient client = new AsyncHttpClient();
    client.post("http://localhost:8080/DemoForAndroid/register/doregister",params ,new AsyncHttpResponseHandler()** {
        // When the response returned by REST has Http response code '200'
         public void onSuccess(String response) {
            // Hide Progress Dialog
             System.out.println("response=======   "+response);
             prgDialog.hide();
             try {
                      // JSON Object
                     JSONObject obj = new JSONObject(response);
                     // When the JSON response has status boolean value assigned with true
                     if(obj.getBoolean("status")){
                         // Set Default Values for Edit View controls
                         setDefaultValues();
                         // Display successfully registered message using Toast
                         Toast.makeText(getApplicationContext(), "You are successfully registered!", Toast.LENGTH_LONG).show();
                     }
                     // Else display error message
                     else{
                         errorMsg.setText(obj.getString("error_msg"));
                         Toast.makeText(getApplicationContext(), obj.getString("error_msg"), Toast.LENGTH_LONG).show();
                     }
             } catch (JSONException e) {
                 // TODO Auto-generated catch block
                 Toast.makeText(getApplicationContext(), "Error Occured [Server's JSON response might be invalid]!", Toast.LENGTH_LONG).show();
                 e.printStackTrace();

             }
         }
         // When the response returned by REST has Http response code other than '200'
         public void onFailure(int statusCode, Throwable error,
             String content) {
             // Hide Progress Dialog
             prgDialog.hide();
             // When Http response code is '404'
             if(statusCode == 404){
                 Toast.makeText(getApplicationContext(), "Requested resource not found", Toast.LENGTH_LONG).show();
             }
             // When Http response code is '500'
             else if(statusCode == 500){
                 Toast.makeText(getApplicationContext(), "Something went wrong at server end", Toast.LENGTH_LONG).show();
             }
             // When Http response code other than 404, 500
             else{
                 Toast.makeText(getApplicationContext(), "Unexpected Error occcured! [Most common Error: Device might not be connected to Internet or remote server is not up and running]", Toast.LENGTH_LONG).show();
             }
         }
     });

    System.out.println("Client=======  "+client);
}

日志文件

01-28 12:10:26.307: W/KeyCharacterMap(106): No keyboard for id 0
01-28 12:10:26.307: W/KeyCharacterMap(106): Using default keymap: /system/usr/keychars/qwerty.kcm.bin
01-28 12:11:33.238: I/System.out(274): params=====  username=raju@mail.com&name=Raju &password=123456
01-28 12:11:33.328: D/dalvikvm(274): GC_FOR_MALLOC freed 5941 objects / 275504 bytes in 57ms
01-28 12:11:33.378: I/System.out(274): Client=======  com.loopj.android.http.AsyncHttpClient@44ef5638
01-28 12:11:33.578: I/System.out(274): response=======   {"tag":"register","status":false,"error_msg":"Error occured"}
01-28 12:11:33.678: I/ARMAssembler(58): generated scanline__00000077:03515104_00000000_00000000 [ 33 ipp] (47 ins) at [0x360af8:0x360bb4] in 405396 ns
01-28 12:11:33.745: W/InputManagerService(58): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@450aa070

Restful 网络服务代码

@Path("/register")
public class Register {
 // HTTP Get Method
 User usr = new User();
@POST
// Path: http://localhost/<appln-folder-name>/register/doregister
@Path("/doregister") 
// Produces JSON as response
@Produces(MediaType.APPLICATION_JSON)
// Query parameters are parameters: http://localhost/<appln-folder-name>/register/doregister?name=pqrs&username=abc&password=xyz

public String doLogin(@QueryParam("name") String name, @QueryParam("username") String uname, @QueryParam("password") String pwd){
    String response = "";
    System.out.println("Inside doLogin "+uname+"  "+pwd);
    int retCode = registerUser(name, uname, pwd);
    System.out.println("ret code= "+retCode);
    if(retCode == 0){
        response = Utitlity.constructJSON("register",true);
    }else if(retCode == 1){
        response = Utitlity.constructJSON("register",false, "You are already registered");
    }else if(retCode == 2){
        response = Utitlity.constructJSON("register",false, "Special Characters are not allowed in Username and Password");
    }else if(retCode == 3){
        response = Utitlity.constructJSON("register",false, "Error occured");
    }
    return response;

}

private int registerUser(String name, String uname, String pwd){
    System.out.println("Inside checkCredentials");
    System.out.println("name= "+name);
    System.out.println("uname= "+uname);
    System.out.println("pwd= "+pwd);
    int result = 3;
    if(Utitlity.isNotNull(uname) && Utitlity.isNotNull(pwd)){
        try {
            System.out.println("add user---------------");
           /* if(DBConnection.insertUser(name, uname, pwd)){*/
                usr.setName(name);
                usr.setUsername(uname);
                usr.setPassword(pwd);
                new UserDao().addUser(usr);

                System.out.println("RegisterUSer if");
                result = 0;
       /*     }*/
        } /*catch(SQLException sqle){
            System.out.println("RegisterUSer catch sqle");
            //When Primary key violation occurs that means user is already registered
            if(sqle.getErrorCode() == 1062){
                result = 1;
            }
            //When special characters are used in name,username or password
            else if(sqle.getErrorCode() == 1064){
                System.out.println(sqle.getErrorCode());
                result = 2;
            }
        }*/
        catch (Exception e) {
            // TODO Auto-generated catch block
            System.out.println("Inside checkCredentials catch e ");
            result = 3;
        }
    }else{
        System.out.println("Inside checkCredentials else");
        result = 3;
    }

    return result;
}
}

网络服务日志

Inside doLogin null  null
Inside checkCredentials
name= null
uname= null
pwd= null
Inside isNotNull
Inside checkCredentials else
ret code= 3

Answer 1

用 doLogin() 中的 @FormParam 替换 @QueryParam 我认为 @QueryParam 更像是预期的 GET 参数。

Post 方法在 Android 中的 AsyncHttpClient 中不起作用

Post method not working in AsyncHttpClient in Android

java

android

web-services

rest