​ 使用前准备工作：

implementation implementation 'com.squareup.okhttp3:okhttp:3.2.0'
implementation 'com.squareup.okio:okio:1.7.0'

用法

1.get用法

1. 要有一个客户端，类似于要有一个浏览器

   OkHttpClient client = OkHttpClient client = new OkHttpClient.Builder()
   		.connecTimeout(10000,TimeUnit.MILLSECONDS)
   		.build();

2. 创建请求内容

   Request request = new Request request = new Request()
   		.get()
   		.url(BASE_URL + "/get/text")
   		.build();

3. 用client去创建请求任务

   Call call = client.newCall(request);

4. 异步请求

   callcall.enqueue(new Callback(){
   	@Override
   	public void onFaile(Call call,IOException e){
   	
   	}
   	@Override
   	public void onResponse(Call call,Response response) throws IOException{
   	
   	}
   
   });
   //注意的是onResponse回调并非在UI线程

      
   5. 同步请求调用Call的execute方法
   
   6. 基本步骤总结：创建OkHttpClient、Request和Call，最后调用Call的enqueue（）方法.
   
   ### 2.post请求
   
   
   
   ### 3.异步下载文件
   
   ### 4.异步上传Multipart文件
   
   ### 5.拦截器
   
   #### 5.1HttpLoggingInterceptor用法

   //1.定义拦截器 + Logger

private static HttpLoggingInterceptor sInterceptor = new HttpLoggingInterceptor(new HttpLoggingInterceptor.Logger() {
@Override
public void log(String message) {
try {
String text = URLDecoder.decode(message, “utf-8”);
Log.e(“OKHttp—–”, text);
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
Log.e(“OKHttp—–”, message);
}
}
});
//2.设置打印级别
//3.给client添加拦截器
sInterceptor.setLevel(HttpLoggingInterceptor.Level.BASIC);
OkHttpClient client = new OkHttpClient.Builder()
.addInterceptor(sInterceptor)
.connectTimeout(10000, TimeUnit.MILLISECONDS)
.build();

#### 5.2应用场景