OkHttp的简单使用代码示例
作者:互联网
一、引入依赖
法1、下载jar引入
法2、maven依赖
<dependency>
<groupId>com.squareup.okhttp3</groupId>
<artifactId>okhttp</artifactId>
<version>3.2.0</version>
</dependency>
法3、gradle依赖
compile 'com.squareup.okhttp3:okhttp:3.2.0'
补充:
别忘了网络权限:
<uses-permission android:name="android.permission.INTERNET" />
二、“四剑客”构成基本请求
“四剑客”指的是“OkHttpClient (连接)”、“Request (请求)”、“Response (响应)”、“Builder (附加信息)”
简单的GET请求代码:
OkHttpClient client = new OkHttpClient(); // 获得连接
String run(String url) throws IOException { // 请求方法
Request request = new Request.Builder().url(url).build(); // Request被Builder附加一些信息,如请求的url地址
Response response = client.newCall(request).execute(); // Request被OkHttpClient执行,返回Response
if (response.isSuccessful()) { // 获取结果
return response.body().string();
} else {
throw new IOException("Unexpected code " + response);
}
}
简单的POST请求代码(相比GET多了body):
public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8");
OkHttpClient client = new OkHttpClient(); // 同上
String post(String url, String json) throws IOException {
RequestBody body = RequestBody.create(JSON, json); // 构建body
Request request = new Request.Builder()
.url(url)
.post(body)
.build(); // 同上。但是这里Builder多附加了body
Response response = client.newCall(request).execute(); // 同上
f (response.isSuccessful()) { // 同上
return response.body().string();
} else {
throw new IOException("Unexpected code " + response);
}
}
通过POST方式把键值对数据传送到服务器的代码:
OkHttpClient client = new OkHttpClient(); // 同上
String post(String url, String json) throws IOException {
RequestBody formBody = new FormEncodingBuilder()
.add("platform", "android")
.add("name", "bug")
.add("subject", "XXXXXXXXXXXXXXX")
.build(); // 新的“剑客”:RequestBody,和新的“剑客”FormEncodingBuilder,把键值对组装成Body,其实原理还是Builder构建附加信息
Request request = new Request.Builder()
.url(url)
.post(body)
.build(); // 同上
Response response = client.newCall(request).execute(); // 同上
if (response.isSuccessful()) { // 同上
return response.body().string();
} else {
throw new IOException("Unexpected code " + response);
}
}
标签:body,示例,url,代码,Request,OkHttpClient,OkHttp,new,response 来源: https://blog.csdn.net/sadkhkuhkjasga/article/details/123093024