OkHttp的基本使用——替代Apache HttpClient 缺乏、安全感 2021-06-24 15:58 422阅读 0赞 http是现在主流应用使用的网络请求方式, 用来交换数据和内容, 有效的使用HTTP可以使你的APP 变的更快和减少流量的使用 OkHttp 是一个很棒HTTP客户端: * 支持SPDY, 可以合并多个到同一个主机的请求 * 使用连接池技术减少请求的延迟(如果SPDY是可用的话) * 使用GZIP压缩减少传输的数据量 * 缓存响应避免重复的网络请求 OkHttp可以替换Apache的HttpClient OkHttp支持2.3和以上版本,对于java,需要jdk1.7 ,OkHttp需要依赖Okio包 下面上demo 1:使用get方式请求,获取响应 import java.io.IOException; import okhttp3.OkHttpClient; import okhttp3.Request; import okhttp3.Response; public class GetExample { OkHttpClient client = new OkHttpClient(); String run(String url) throws IOException { Request request = new Request.Builder() .url(url) .build(); try (Response response = client.newCall(request).execute()) { return response.body().string(); } } public static void main(String[] args) throws IOException { GetExample example = new GetExample(); String response = example.run("https://raw.github.com/square/okhttp/master/README.md"); System.out.println(response); } } 2:使用post向服务器发送请求 import java.io.IOException; import okhttp3.MediaType; import okhttp3.OkHttpClient; import okhttp3.Request; import okhttp3.RequestBody; import okhttp3.Response; public class PostExample { public static final MediaType JSON = MediaType.parse("application/json; charset=utf-8"); OkHttpClient client = new OkHttpClient(); String post(String url, String json) throws IOException { RequestBody body = RequestBody.create(JSON, json); Request request = new Request.Builder() .url(url) .post(body) .build(); try (Response response = client.newCall(request).execute()) { return response.body().string(); } } String bowlingJson(String player1, String player2) { return "{'winCondition':'HIGH_SCORE'," + "'name':'Bowling'," + "'round':4," + "'lastSaved':1367702411696," + "'dateStarted':1367702378785," + "'players':[" + "{'name':'" + player1 + "','history':[10,8,6,7,8],'color':-13388315,'total':39}," + "{'name':'" + player2 + "','history':[6,10,5,10,10],'color':-48060,'total':41}" + "]}"; } public static void main(String[] args) throws IOException { PostExample example = new PostExample(); String json = example.bowlingJson("Jesse", "Jake"); String response = example.post("http://www.roundsapp.com/post", json); System.out.println(response); } }
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