如何使用Android Studio和Web Api以相同请求进行POST和GET

Question

我正在开发使用Android Studio的Android应用程序 和后端使用Asp.Net Web API。

网络API边

[System.Web.Http.AcceptVerbs("GET", "POST")] 
[System.Web.Http.HttpGet] 
public dynamic GetTest(string name) 
{ 
    List<person> persons = new List<person>() 
    { 
     new person { ID = 1, Name = "Loai" }, 
     new person { ID = 2, Name = "rami" }, 
     new person { ID = 3, Name = "Omar" }, 
     new person { ID = 4, Name = name} 
    }; 
    IEnumerable<person> p = persons.ToList(); 
    return new { Students = p }; 
} 

在此链接

http://qjtest.azurewebsites.net/api/test

，如果你想设置的名参数值，你可以使用

http://qjtest.azurewebsites.net/api/test?name=ayman

Android Studio中端

我用这个代码

final String URL = "http://qjtest.azurewebsites.net/api/test"; 
      HashMap<String, String> params = new HashMap<String, String>(); 
      params.put("name", "ayman"); 
      JsonObjectRequest req = new JsonObjectRequest(Request.Method.GET, URL, new JSONObject(params), 
        new Response.Listener<JSONObject>() { 
         @Override 
         public void onResponse(JSONObject response) { 
          try { 
           JSONArray jsonArray = response.getJSONArray("Students"); 
           for (int i = 0; i < jsonArray.length(); i++) { 
            JSONObject student = jsonArray.getJSONObject(i); 
            String ID = student.getString("ID"); 
            String Name = student.getString("Name"); 
            textview.append(ID + " - " + Name + "\n"); 
           } 
          } catch (JSONException e) { 
           e.printStackTrace(); 
          } 
         } 
        }, new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        VolleyLog.e("Error: ", error.getMessage()); 
       } 
      }); 
      requestQueue.add(req); 

当我运行应用程序，并按下按钮，这是错误显示的logcat

11-17 15:08:48.035 9628-9654/com.sqlite_test.alhalabi.loai.test_gson E/Volley: [155] 

BasicNetwork.performRequest: Unexpected response code 404 for http://qjtest.azurewebsites.net/api/test 11-17 15:08:48.041 9628-9628/com.sqlite_test.alhalabi.loai.test_gson E/Volley: 1 2.onErrorResponse: Error:

Answer 1

你可以请参阅以下示例：

 String url = "http://qjtest.azurewebsites.net/api/test?name=ayman"; 

     JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(url, null, new Response.Listener<JSONObject>() { 
      @Override 
      public void onResponse(JSONObject response) { 
       Toast.makeText(mContext, "onResponse:\r\n" + response.toString(), Toast.LENGTH_SHORT).show(); 
      } 
     }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 
       Toast.makeText(mContext, "onErrorResponse:\r\n" + error.toString(), Toast.LENGTH_SHORT).show(); 
      } 
     }); 

     requestQueue.add(jsonObjectRequest);