android studio使用volley发送post和get请求

电玩女神 2022-07-19 05:19 246阅读 0赞

1、新建项目并将用到的jar包Volley.jar和gson-2.3.1.jar添加到项目的app/libs中

2、封装volley请求方便调用

VolleyUtil.java

package com.ihefe.test.volley;
    
    import android.content.Context;
    import android.os.Handler;
    import android.os.Message;
    import android.util.Log;
    
    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.android.volley.toolbox.Volley;
    import com.google.gson.Gson;
    
    import java.util.Map;
    
    /**
     * 请求数据工具类
     */
    public class VolleyUtil {
        private static RequestQueue requestQueue;
    
        private VolleyUtil() {
    
        }
    
        public static VolleyUtil getInstance() {
            return VolleyUtilHold.getVolleyUtilInstance();
        }
    
        public   void init(Context context) {
            requestQueue = Volley.newRequestQueue(context);
        }
    
    
        /**
         * post请求
         *
         * @param path   请求路径
         * @param map    请求参数
         * @param entity 需要解析的类
         * @return
         */
        public void StringRequest_POST(final Handler handler, String path, final Map<String, String> map, final Object entity) {
            StringRequest request = new StringRequest(StringRequest.Method.POST, path, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    Gson gson = new Gson();
                    Object o = gson.fromJson(response, entity.getClass());
                    Message msg = Message.obtain();
                    msg.obj = o;
                    handler.sendMessage(msg);
                }
            }, new MyErrorListener()) {
                @Override
                protected Map<String, String> getParams() throws AuthFailureError {
                    return map;
                }
            };
            request.setTag(path);
            requestQueue.add(request);
        }
    
        /**
         * get请求
         *
         * @param path   请求路径
         * @param entity 需要解析的类
         * @return
         */
        public void StringRequest_GET(final Handler handler, String path, final Object entity) {
            StringRequest request = new StringRequest(path, new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    Gson gson = new Gson();
                    Object o = gson.fromJson(response, entity.getClass());
                    Message msg = Message.obtain();
                    msg.obj = o;
                    handler.sendMessage(msg);
                }
            }, new MyErrorListener());
            request.setTag(path);
            requestQueue.add(request);
        }
    
        private static final class VolleyUtilHold {
            public static VolleyUtil getVolleyUtilInstance() {
                return new VolleyUtil();
            }
        }
    
        /**
         * 执行请求错误
         */
        public static class MyErrorListener implements Response.ErrorListener {
    
            @Override
            public void onErrorResponse(VolleyError error) {
                //  LogUtils.showLog("VolleyError" + error.getMessage());
            }
        }
    
        /**
         * 需要手动解析字符串的post请求
         *
         * @param path
         * @param succes
         * @param error
         * @param map
         */
        public void simple_post(String path,
                                Response.Listener<String> succes, Response.ErrorListener error,
                                final Map<String, String> map) {
    
            StringRequest request_post = new StringRequest(Request.Method.POST,
                    path, succes, error) {
                @Override
                protected Map<String, String> getParams() throws AuthFailureError {
                    return map;
                }
            };
            request_post.setTag(path);
            System.out.println(request_post);
            requestQueue.add(request_post);
    
        }
    
        /**
         * 需要手动解析字符串的get请求
         *
         * @param path
         * @param succes
         * @param error
         */
        public void simple_get(String path, Response.Listener<String> succes, Response.ErrorListener error) {
            Log.e("VolleyUtil", "path-->"+path);
            StringRequest request = new StringRequest(path,succes,error);
            requestQueue.add(request);
        }
    
        /**
         * 取消请求
         *
         * @param path 请求路径
         */
        public void removeRequest(String path) {
            requestQueue.cancelAll(path);
        }
    
    
    }

3、activity调用volley工具类发送post请求

package com.ihefe.test.volley;
    
    import android.content.Context;
    import android.os.Bundle;
    import android.support.v7.app.AppCompatActivity;
    import android.util.Log;
    import android.widget.Toast;
    
    import com.android.volley.Response;
    import com.android.volley.VolleyError;
    
    import java.util.HashMap;
    import java.util.Map;
    
    public class MainActivity extends AppCompatActivity {
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            init_config(getApplication());//初始化
    
            Map<String, String> map = new HashMap<>();
            map.put("username", "test");
            map.put("password", "f5f97c92ae39d49a4fa87d97eb3d89ff");
    
            //发送请求
            VolleyUtil.getInstance().simple_post("http://192.168.15.43/server.php",
                    new Response.Listener<String>() {
                        @Override
                        public void onResponse(String result) {
                            Log.e("TAG", "onResponse: " + result);
                            Toast.makeText(MainActivity.this, "请求成功",
                                    Toast.LENGTH_SHORT).show();
                        }
                    }, new Response.ErrorListener() {
    
                        @Override
                        public void onErrorResponse(VolleyError arg0) {
                            Toast.makeText(MainActivity.this, "网络错误！",
                                    Toast.LENGTH_SHORT).show();
    
                        }
                    }, map);
    
        }
    
        /**
         * 初始化设置
         *
         * @param context
         */
        public void init_config(Context context) {
            VolleyUtil.getInstance().init(context);
        }
    }

4、AndroidManifest.xml中添加网络请求权限

<uses-permission android:name="android.permission.INTERNET"/>

5、运行app项目查看结果：

![Center][]

附：

server.php

<?php
    $data[]=array('name'=>'test','age'=>100);
    $data[]=array('name'=>'小黑','age'=>80);
    $data[]=array('name'=>'小白','age'=>80);
    $result['list']=$data;
    $result['info']=$_POST;
    echo json_encode($result);

[Center]: /images/20220718/3621474fa6d54cb99829ec3bb8115aa0.png