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OkHttp3(1)

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简介

翻译自官网

套话….

  • 支持http2，对一台机器的所有请求共享同一个socket
  • 内置连接池，支持连接复用，减少延迟
  • 支持透明的gzip压缩响应体
  • 通过缓存避免重复的请求
  • 请求失败时自动重试主机的其他备用ip，自动重定向
  • 好用的API

引入

implementation 'com.squareup.okhttp3:okhttp:3.10.0'

记得加上网络权限

基本使用

get请求

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String url = "http://write.blog.csdn.net/postlist/0/0/enabled/1";
OkHttpClient okHttpClient = new OkHttpClient();

Request request = new Request.Builder().url(url).build();
okhttp3.Response response = null;
try {
    response = okHttpClient.newCall(request).execute();
    String json = response.body().string();
    Log.i(TAG,json);

} catch (IOException e) {
    e.printStackTrace();
}

这样程序会报错，因为不能直接在主线程进行网络操作。

解决办法

  • 另开子线程
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new Thread(new Runnable() {
            @Override
            public void run() {
                String url = "https://raw.github.com/square/okhttp/master/README.md";
                OkHttpClient okHttpClient = new OkHttpClient();

                Request request = new Request.Builder().url(url).build();
                okhttp3.Response response = null;
                try {
                    response = okHttpClient.newCall(request).execute();
                    String json = response.body().string();
                    Log.i(TAG,json);

                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }).start();
  • 异步请求
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String url = "https://raw.github.com/square/okhttp/master/README.md";
OkHttpClient okHttpClient = new OkHttpClient();

Request request = new Request.Builder().url(url).build();
okhttp3.Response response = null;
okHttpClient.newCall(request).enqueue(new Callback() {
    @Override
    public void onFailure(Call call, IOException e) {
        Log.i(TAG, "onFailure: ");
    }

    @Override
    public void onResponse(Call call, Response response) throws IOException {
        String json = response.body().string();
        Log.i(TAG,json);
    }
});

post请求

post提交Json数据

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String url = "https://raw.github.com/square/okhttp/master/README.md";
        String json = "zzz";
        OkHttpClient okHttpClient = new OkHttpClient();

        RequestBody body = RequestBody.create(MediaType.parse("application/json"),json);
        final Request request = new Request.Builder()
                .url(url)
                .post(body)
                .build();
        okHttpClient.newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(Call call, IOException e) {
                Log.i(TAG, "onFailure: " + e.toString());
            }

            @Override
            public void onResponse(Call call, Response response) throws IOException {
                Log.i(TAG, "onResponse: " + request.body().toString());
            }
        });

其他的就不再一一列举。