本次來記錄下OkHttpClient的使用，OkHttpClient是用來完成android 客戶端對服務端請求的工具。

首先記住，使用網(wǎng)絡的時候一定要加入權限，加入到AndroidMainfest.xml中

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

在初次使用的時候會出現(xiàn)報錯。cannot resolve symbol OkHttpClient

這里需要引入

implementation ’com.squareup.okhttp3:okhttp:3.0.1’然后刷新下項目就可以了。

代碼：

package com.example.administrator.testclient;import com.squareup.*;import java.io.IOException;import okhttp3.FormBody;import okhttp3.MediaType;import okhttp3.OkHttpClient;import okhttp3.Request;import okhttp3.RequestBody;import okhttp3.Response;public class BaseHttpClient { public static final MediaType MEDIA_TYPE_MARKDOWN = MediaType.parse('text/x-markdown; charset=utf-8'); // 01. 定義okhttp private final OkHttpClient client = new OkHttpClient(); public BaseHttpClient(){ //client.connectTimeoutMillis(); } /** * 發(fā)送一個表單請求 * @throws Exception */ public void SendForm() throws Exception { RequestBody formBody = new FormBody.Builder() .add('search', 'Jurassic Park') .build(); Request request = new Request.Builder() .url('https://en.wikipedia.org/w/index.php') .post(formBody) .build(); Response response = client.newCall(request).execute(); if (!response.isSuccessful()) throw new IOException('Unexpected code ' + response); System.out.println(response.body().string()); } /**POST 請求 * 發(fā)送一個string請求 * @throws Exception */ public void SendPostString() throws Exception { String postBody = '' + 'Releasesn' + '--------n' + 'n' + ' * _1.0_ May 6, 2013n' + ' * _1.1_ June 15, 2013n' + ' * _1.2_ August 11, 2013n'; Request request = new Request.Builder() .url('https://api.github.com/markdown/raw') .post(RequestBody.create(MEDIA_TYPE_MARKDOWN, postBody)) .build(); Response response = client.newCall(request).execute(); if (!response.isSuccessful()) throw new IOException('Unexpected code ' + response); System.out.println(response.body().string()); } /**POST 請求 * 發(fā)送一個From請求 * @throws Exception */ public void SendPostFrom() throws Exception { RequestBody body = new FormBody.Builder() .add('name', 'sy')//添加參數(shù)體 .add('age', '18') .build(); Request request = new Request.Builder() .post(body) //請求參數(shù) .url('http://123.207.70.54:8080/SpringMvc/hello') .build(); Response response = client.newCall(request).execute(); if (!response.isSuccessful()) throw new IOException('Unexpected code ' + response); } /**Get請求 * 發(fā)送一個From請求 * @throws Exception */ public void SendGetFrom() throws Exception { Request request = new Request.Builder() .get() //請求參數(shù) .url('http://123.207.70.54:8080/SpringMvc/hello') .build(); Response response = client.newCall(request).execute(); if (!response.isSuccessful()) throw new IOException('Unexpected code ' + response); }}

測試發(fā)現(xiàn)，上面的用不了，下面放一個測試通過的方法：

public void getDatasyncFactory(){ new Thread(new Runnable() { @Override public void run() { try { OkHttpClient client = new OkHttpClient();//創(chuàng)建OkHttpClient對象 Request request = new Request.Builder() .url('http://123.207.70.54:8080/SpringMvc/hello')//請求接口。如果需要傳參拼接到接口后面。 .build();//創(chuàng)建Request 對象 Response response = null; response = client.newCall(request).execute();//得到Response 對象 if (response.isSuccessful()) {Log.d('kwwl','response.code()=='+response.code());Log.d('kwwl','response.message()=='+response.message());Log.d('kwwl','res=='+response.body());//此時的代碼執(zhí)行在子線程，修改UI的操作請使用handler跳轉到UI線程。 } } catch (Exception e) { e.printStackTrace(); } } }).start(); }

返回信息：

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支持好吧啦網(wǎng)。