无法通过Volley Request中的Params通过android

syntax error
您好，我无法通过Volley请求传递参数。我目前使用GET方法。但是，当我通过帕拉姆显示“零误差”无法通过Volley Request中的Params通过android

我曾尝试
和波纹管是我的活动代码。我试图通过“dayorder”参数，并在结果中我试图得到特定的“dayorder's句点”作为结果数组，并在TextView中打印。

public class AttendanceActivity extends AppCompatActivity { 

private TextView today; 
private TextView todayDate; 
private TextView textViewResult; 
private String dayorder; 


protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_attendance); 

    today = (TextView) findViewById(R.id.textDay); 
    todayDate = (TextView) findViewById(R.id.textDate); 
    textViewResult=(TextView)findViewById(R.id.textViewResult); 
    chechDate(); 
} 

public void chechDate(){ 
     Calendar rightNow = Calendar.getInstance(); 
     if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.MONDAY){ 
      today.setText("Monday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.TUESDAY){ 
      today.setText("Tuesday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.WEDNESDAY){ 
      today.setText("Wednesday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.THURSDAY){ 
      today.setText("Thursday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.FRIDAY){ 
      today.setText("Friday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY){ 
      today.setText("Saturday"); 
     } else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY){ 
      today.setText("Sunday"); 
     }else{ 
      today.setText("Unable to get day"); 
     } 

     Calendar c = Calendar.getInstance(); 
     System.out.println("Current time => " + c.getTime()); 

     SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy"); 
     String formattedDate = df.format(c.getTime()); 

    dayorder=today.toString(); 
     todayDate.setText(formattedDate); 

    getData(); 


    } 

private void getData() { 

    dayorder = today.getText().toString().trim(); 



    StringRequest stringRequest = new StringRequest(Request.Method.GET, SUBJECT_URL, 
      new Response.Listener<String>() { 
       @Override 
       public void onResponse(String response) { 
        if (response.trim().equals("success")) { 
         Toast.makeText(AttendanceActivity.this, response, Toast.LENGTH_LONG).show(); 

         showJSON(response); 

        } else { 
         Toast.makeText(AttendanceActivity.this, response, Toast.LENGTH_LONG).show(); 


        } 
       } 
      }, 
      new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        Toast.makeText(AttendanceActivity.this, "Unable to connect. Please connect to Internet!", Toast.LENGTH_LONG).show(); 
       } 
      }) { 
     @Override 
     protected Map<String, String> getParams(){ 
      Map<String, String> map = new HashMap<>(); 
      map.put(KEY_DAYORDER, dayorder); 
      return map; 
     } 
    }; 

    RequestQueue requestQueue = Volley.newRequestQueue(this); 
    requestQueue.add(stringRequest); 
} 

private void showJSON(String response){ 
    String period1=""; 
    String period2=""; 
    String period3=""; 
    String period4=""; 
    String period5=""; 
    String period6=""; 
    String period7=""; 

    try { 
     JSONObject jsonObject = new JSONObject(response); 
     JSONArray result = jsonObject.getJSONArray(Config.JSON_SUBJECTARRAY); 
     JSONObject collegeData = result.getJSONObject(0); 
     period1 = collegeData.getString(Config.KEY_PERIOD1); 
     period2 = collegeData.getString(Config.KEY_PERIOD2); 
     period3 = collegeData.getString(Config.KEY_PERIOD3); 
     period4 = collegeData.getString(Config.KEY_PERIOD4); 
     period5 = collegeData.getString(Config.KEY_PERIOD5); 
     period6 = collegeData.getString(Config.KEY_PERIOD6); 
     period7 = collegeData.getString(Config.KEY_PERIOD7); 

    } catch (JSONException e) { 
     e.printStackTrace(); 
    } 
    textViewResult.setText(period1+period2+period3+period4+period5+period6+period7); 
}

}

来源

2017-07-09 vignesh s

import android.os.Bundle; 
import android.support.v7.app.AppCompatActivity; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.android.volley.Request; 
import com.android.volley.RequestQueue; 
import com.android.volley.Response; 
import com.android.volley.VolleyError; 
import com.android.volley.toolbox.StringRequest; 
import com.android.volley.toolbox.Volley; 
import com.ibm.icu.text.SimpleDateFormat; 
import com.ibm.icu.util.Calendar; 

import org.json.JSONArray; 
import org.json.JSONException; 
import org.json.JSONObject; 

import java.util.HashMap; 
import java.util.Map; 

import static com.example.vicky.module1.Config.KEY_DAYORDER; 
import static com.example.vicky.module1.Config.KEY_PERIOD1; 
import static com.example.vicky.module1.Config.SUBJECT_URL; 

public class AttendanceActivity extends AppCompatActivity { 
    private TextView today; 
    private TextView todayDate; 
    private TextView textViewResult;  
    private String dayorder; 

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_attendance); 

    today = (TextView) findViewById(R.id.textDay); 
    todayDate = (TextView) findViewById(R.id.textDate); 
    textViewResult=(TextView)findViewById(R.id.textViewResult); 

    chechDate(); 
} 

public void chechDate(){ 
     Calendar rightNow = Calendar.getInstance(); 
     if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.MONDAY){ 
      today.setText("Monday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.TUESDAY){ 
      today.setText("Tuesday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.WEDNESDAY){ 
      today.setText("Wednesday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.THURSDAY){ 
      today.setText("Thursday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.FRIDAY){ 
      today.setText("Friday"); 
     }else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.SATURDAY){ 
      today.setText("Saturday"); 
     } else if (rightNow.get(Calendar.DAY_OF_WEEK) == Calendar.SUNDAY){ 
      today.setText("Sunday"); 
     }else{ 
      today.setText("Unable to get day"); 
     } 
     Calendar c = Calendar.getInstance(); 
     System.out.println("Current time => " + c.getTime()); 
     SimpleDateFormat df = new SimpleDateFormat("dd-MMM-yyyy"); 
     String formattedDate = df.format(c.getTime()); 
     todayDate.setText(formattedDate); 
    getData(); 
    } 

private void getData(){ 
    dayorder = today.getText().toString().trim(); 

    StringRequest stringRequest = new StringRequest(Request.Method.POST, SUBJECT_URL, 
      new Response.Listener<String>() { 
       @Override 
       public void onResponse(String response) { 
        Toast.makeText(AttendanceActivity.this,response,Toast.LENGTH_LONG).show(); 
        showJSON(response); 
       } 
      }, 
      new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        Toast.makeText(AttendanceActivity.this,error.toString(),Toast.LENGTH_LONG).show(); 
       } 
      }){ 
     @Override 
     protected Map<String,String> getParams(){ 
      Map<String,String> params = new HashMap<String, String>(); 
      params.put(KEY_DAYORDER, dayorder); 

      return params; 
     } 

    }; 

    RequestQueue requestQueue = Volley.newRequestQueue(this); 
    requestQueue.add(stringRequest); 
} 

private void showJSON(String response){ 
    String period1=""; 
    String period2=""; 
    String period3=""; 
    String period4=""; 
    String period5=""; 
    String period6=""; 
    String period7=""; 

    try { 
     Toast.makeText(AttendanceActivity.this, "showjson try method", Toast.LENGTH_SHORT).show(); 


     JSONObject jsonObject = new JSONObject(response); 
     JSONArray result = jsonObject.getJSONArray(Config.JSON_SUBJECTARRAY); 
     JSONObject collegeData = result.getJSONObject(0); 
     period1 = collegeData.getString(KEY_PERIOD1); 


     textViewResult.setText(period1); 

    } catch (JSONException e) { 
     e.printStackTrace(); 
    } 

    } 

}

HI最后我找到了我需要以上是正确的查询。感谢每一位。

来源

2017-07-14 15:11:30

在调用getRequest你由地址提供参数 “paramKey =” 值？;

new StringRequest(Request.Method.GET, SUBJECT_URL?"KEY_DAYORDER="dayorder,

为您的情况

StringRequest stringRequest = new StringRequest(Request.Method.GET, SUBJECT_URL?"KEY_DAYORDER="dayorder, 
      new Response.Listener<String>() { 
       @Override 
       public void onResponse(String response) { 
        if (response.trim().equals("success")) { 
         Toast.makeText(AttendanceActivity.this, response, Toast.LENGTH_LONG).show(); 

         showJSON(response); 

        } else { 
         Toast.makeText(AttendanceActivity.this, response, Toast.LENGTH_LONG).show(); 


        } 
       } 
      }, 
      new Response.ErrorListener() { 
       @Override 
       public void onErrorResponse(VolleyError error) { 
        Toast.makeText(AttendanceActivity.this, "Unable to connect. Please connect to Internet!", Toast.LENGTH_LONG).show(); 
       } 
      }) };

来源

2017-07-10 14:35:25 Avinash

谢谢你，我怀疑为什么它通过paragm.put传递不工作？通过HashMap –

@vigneshs GET和POST参数的发送方式不同。您可以通过在http://example.com/?name=peter&age=27这样的url中附加GET来发送GET参数。在POST中，您可以在请求体内发送参数。在Volley中，如果您想要将参数添加到GET请求中，请使用字符串连接或格式将它们附加到url中;如果您想要将参数添加到POST请求中，请将参数传递到请求构造器或重写getParams方法。 – FerDensetsu

嘿谢谢你的回复@FerDensetsu我不知道如何附加GET请求的URL，所以如果我想通过POST请求，我可以通过简单地将“Request.Method”更改为POST来实现它吗？ –

无法通过Volley Request中的Params通过android

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