Android使用OKHTTP解析JSON数据[通俗易懂]

package com.example.asus.networktest;
 
import okhttp3.OkHttpClient;
import okhttp3.Request;
 
public class HttpUtil {
 
 public static void sendOkHttpRequest(final String address, final okhttp3.Callback callback) {
 OkHttpClient client = new OkHttpClient();
 Request request = new Request.Builder()
 .url(address)
 .build();
        client.newCall(request).enqueue(callback);
 }
 
}

package com.example.asus.networktest;
 
public class App {
 
 private String other;
 
 private String u_Name;
 
 private String u_id;
 
 private String u_passWord;
 
 private String u_token;
 
 private String u_userName;
 
 public String getOther() {
 return other;
 }
 
 public void setOther(String other) {
 this.other = other;
 }
 
 public String getU_Name() {
 return u_Name;
 }
 
 public void setU_Name(String u_Name) {
 this.u_Name = u_Name;
 }
 
 public String getU_id() {
 return u_id;
 }
 
 public void setU_id(String u_id) {
 this.u_id = u_id;
 }
 
 public String getU_passWord() {
 return u_passWord;
 }
 
 public void setU_passWord(String u_passWord) {
 this.u_passWord = u_passWord;
 }
 
 public String getU_token() {
 return u_token;
 }
 
 public void setU_token(String u_token) {
 this.u_token = u_token;
 }
 
 public String getU_userName() {
 return u_userName;
 }
 
 public void setU_userName(String u_userName) {
 this.u_userName = u_userName;
 }
}

package com.example.asus.networktest;
 
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
 
import com.google.gson.Gson;
import com.google.gson.reflect.TypeToken;
 
import java.io.IOException;
import java.util.List;
 
import okhttp3.Call;
import okhttp3.Response;
 
public class MainActivity extends AppCompatActivity implements View.OnClickListener{
 
 String url="解析地址";
 TextView responseText;
 
 @Override
 protected void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 Button sendRequest = (Button) findViewById(R.id.send_request);
        responseText = (TextView) findViewById(R.id.response_text);
        sendRequest.setOnClickListener(this);
 }
 
 @Override
 public void onClick(View v) {
 //这里点击事件后，点击后调用网络请求sendRequestWithOkHttp方法
 if (v.getId() == R.id.send_request) {
            sendRequestWithOkHttp();
 }
 }
 
 private void sendRequestWithOkHttp() {
 new Thread(new Runnable() {
 @Override
 public void run() {
 //在子线程中执行Http请求，并将最终的请求结果回调到okhttp3.Callback中
 HttpUtil.sendOkHttpRequest(url,new okhttp3.Callback(){
 @Override
 public void onResponse(Call call, Response response) throws IOException {
 //得到服务器返回的具体内容
 String responseData=response.body().string();
                        parseJSONWithGSON(responseData);
 //显示UI界面，调用的showResponse方法
                        showResponse(responseData.toString());
 }
 @Override
 public void onFailure(Call call,IOException e){
 //在这里进行异常情况处理
 }
 });
 }
 }).start();
 }
 
 private void parseJSONWithGSON(String jsonData) {
 //使用轻量级的Gson解析得到的json
 Gson gson = new Gson();
 List<App> appList = gson.fromJson(jsonData, new TypeToken<List<App>>() {}.getType());
 for (App app : appList) {
 //控制台输出结果，便于查看
 Log.d("MainActivity", "other" + app.getOther());
 Log.d("MainActivity", "u_Name" + app.getU_Name());
 Log.d("MainActivity", "u_id" + app.getU_id());
 Log.d("MainActivity", "u_passWord" + app.getU_passWord());
 Log.d("MainActivity", "u_token" + app.getU_token());
 }
 }
 private void showResponse(final String response) {
 //在子线程中更新UI
        runOnUiThread(new Runnable() {
 @Override
 public void run() {
 // 在这里进行UI操作，将结果显示到界面上
                responseText.setText(response);
 }
 });
 }
}

// 这里使用Java8的新特性Lambda表达式开启线程
 private void showResponse2(final String response) {
 //在子线程中更新UI
        runOnUiThread(() -> {
 // 在这里进行UI操作，将结果显示到界面上
                responseText.setText(response);
 });
 }

Button button = (Button)findViewById(R.id.bytton1);
button.setOnClickListener(v->{
 // 处理点击事件
});

Button button = (Button)findViewById(R.id.bytton1);
button.setOnClickListener((v)->{
 // 处理点击事件
});