안드로이드 리퀘스트

Volley.java

package com.example.volley;

import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;

import androidx.appcompat.app.AppCompatActivity;

import com.android.volley.AuthFailureError;
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.google.gson.Gson;

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

import static com.android.volley.toolbox.Volley.newRequestQueue;

public class Volley extends AppCompatActivity {
    TextView tv;
    EditText et;
    Button bt;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_volley);

        tv=findViewById(R.id.textview);
        et=findViewById(R.id.tempId);
        bt=findViewById(R.id.button);
        bt.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                makeRequest();
            }
        });
    }//end on Create

    private void makeRequest(){
        //이 메서드를 onCreate 안에서 호출한다.
        //리퀘스트를 담을 큐를 만든다.

        RequestQueue queue = newRequestQueue(this);
        String url = "http://192.168.0.84:90/prj/logintest.do";
        StringRequest stringRequest = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() {
            @Override
            public void onResponse(String response) {
                Gson gson = new Gson();
                HashMap<String, String> map = gson.fromJson(response, HashMap.class);
            tv.setText(map.get("result")+ map.get("id") + "성공쓰");
            }
        }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
            tv.setText(error + "눈물이 주루룩");
            }
        }){
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                Map<String, String> params = new HashMap<String, String>();
                params.put("id", et.getText().toString());
                return params;
            }
        };
        queue.add(stringRequest);
    }



}