Java开发 OkHttp基本使用

文档：https://square.github.io/okhttp/

依赖

<dependency> <groupId>com.squareup.okhttp3</groupId> <artifactId>okhttp</artifactId> <version>4.8.1</version> </dependency> <dependency> <groupId>com.google.code.gson</groupId> <artifactId>gson</artifactId> <version>2.8.6</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.13</version> <scope>test</scope> </dependency> 

代码示例

package com.demo; import com.google.gson.Gson; import okhttp3.*; import org.junit.Test; import java.io.IOException; import java.util.HashMap; import java.util.Map; public class Demo { public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8"); /**
     * 发送GET请求
     */ @Test public void getRequest() throws IOException { OkHttpClient client = new OkHttpClient(); Request request = new Request.Builder() .url("http://httpbin.org/get") .build(); Response response = client.newCall(request).execute(); if (response.isSuccessful()) { System.out.println(response.body().string()); } } /**
     * POST请求
     */ @Test public void postRequest() throws IOException { OkHttpClient client = new OkHttpClient(); // 提交FormData FormBody.Builder form = new FormBody.Builder(); form.add("name", "Tom"); form.add("age", "23"); Request request = new Request.Builder() .url("http://httpbin.org/post") .post(form.build()) .build(); Response response = client.newCall(request).execute(); System.out.println(response.body().string()); } /**
     * 提交Json
     */ @Test public void postJsonRequest() throws IOException { OkHttpClient client = new OkHttpClient(); Map<String, Object> map = new HashMap<>(); map.put("name", "Tom"); map.put("age", 23); Gson gson = new Gson(); String data = gson.toJson(map); RequestBody requestBody = RequestBody.create(data, JSON); Request request = new Request.Builder() .url("http://httpbin.org/post") .post(requestBody) .build(); Response response = client.newCall(request).execute(); System.out.println(response.body().string()); } } 

本文地址：https://blog.csdn.net/mouday/article/details/108253164