提供完整性約束錯誤的Android POST參數

Question

我使用Slim框架POST API，當我從POSTMAN工具發佈參數到post url時，它的返回響應沒有任何問題，但是當我嘗試從Android發佈參數時，它是給我的錯誤

{錯誤：{文：SQLSTATE [23000]：完整性約束聲音，列不能爲空。

我的Andorid代碼如下：

StringRequest stringRequest = new StringRequest(Request.Method.POST, "URL_TO_POST", 
         new Response.Listener<String>() { 
          @Override 
          public void onResponse(String response) { 
           Toast.makeText(AddFeedbackActivity.this, response, Toast.LENGTH_LONG).show(); 
          } 
         }, 
         new Response.ErrorListener() { 
          @Override 
          public void onErrorResponse(VolleyError error) { 
           Toast.makeText(AddFeedbackActivity.this, error.toString(), Toast.LENGTH_LONG).show(); 
          } 
         }) { 
        @Override 
        protected Map<String, String> getParams() { 
         Map<String, String> params = new HashMap<String, String>(); 
         params.put("comments", "1"); 
         params.put("fname", "1"); 
         params.put("mobile_no", "1"); 
         return params; 
        } 
       }; 
       RequestQueue requestQueue = Volley.newRequestQueue(AddFeedbackActivity.this); 
       requestQueue.add(stringRequest); 
      }** 

Answer 1

這是答案這是爲我工作，而不是讓任何錯誤現在

  String url = Constant.URL_INSERT_FEEDBACK; 

      Map<String, String> params = new HashMap(); 
      params.put("comments", "1"); 
      params.put("fname", "1"); 
      params.put("mobile_no", "1"); 

      JSONObject parameters = new JSONObject(params); 

      JsonObjectRequest jsonRequest = new JsonObjectRequest(Request.Method.POST, url, parameters, new Response.Listener<JSONObject>() { 
       @Override 
       public void onResponse(JSONObject response) { 
        //TODO: handle success 

        Toast.makeText(AddFeedbackActivity.this, response.toString(), Toast.LENGTH_SHORT).show(); 
       } 
      }, new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        error.printStackTrace(); 
        //TODO: handle failure 
        Toast.makeText(AddFeedbackActivity.this, error.toString(), Toast.LENGTH_SHORT).show(); 

       } 
      }); 

      Volley.newRequestQueue(AddFeedbackActivity.this).add(jsonRequest); 


     }