OkHttp

1、OkHttp官方下载地址

http://square.github.io/okhttp/#download

https://repo1.maven.org/maven2/com/squareup/okio/okio/1.13.0/okio-1.13.0.jar

添加这两个包

2、get请求

public void click(View v) {
sendOkhttpRequest("https://www.baidu.com", new Callback() {

@Override
public void onResponse(Call arg0, Response arg1) throws IOException {
String body = arg1.body().string();
System.out.println(body);
}

@Override
public void onFailure(Call arg0, IOException arg1) {
// TODO Auto-generated method stub

}
});
}

public void sendOkhttpRequest(String url,okhttp3.Callback callback) {
OkHttpClient client=new OkHttpClient();
Request request=new Request.Builder()
.url(url)
.build();
client.newCall(request).enqueue(callback);
}

onResponse回调的参数是response，通过response.body().string()获取字符串；如果希望获得返回的二进制字节数组，则调用response.body().bytes()；如果你想拿到返回的inputStream，则调用response.body().byteStream()

onResponse执行的线程并不是UI线程