android studio使用volley发送post和get请求

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 map, final Object entity) {
        StringRequest request = new StringRequest(StringRequest.Method.POST, path, new Response.Listener() {
            @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 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() {
            @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 succes, Response.ErrorListener error,
                            final Map map) {

        StringRequest request_post = new StringRequest(Request.Method.POST,
                path, succes, error) {
            @Override
            protected Map 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 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 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() {
                    @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

5、运行app项目查看结果：

附：

server.php

'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);