非同步Get

GitHub提供的示例程式碼和國內一些部落格提供的示例程式碼有細節差異
（主要在onFailure和onResponse的引數上）
例如 http://blog.csdn.net/lmj623565791/article/details/47911083
onFailure(Request request, IOException e)
onResponse(final Response response)

示例程式碼

public final class AsynchronousGet {
  private final OkHttpClient client = new
 
 OkHttpClient();

  public void run() throws Exception {
    Request request = new Request.Builder()
        .url("http://publicobject.com/helloworld.txt")
        .build();

    client.newCall(request).enqueue(new Callback() {
      @Override public void onFailure(Call call, IOException e) {
        e.printStackTrace();
      }

      @Override
 
 public void onResponse(Call call, Response response) throws IOException {
        try (ResponseBody responseBody = response.body()) {
          if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

          Headers responseHeaders = response.headers();
          for (int
 
 i = 0, size = responseHeaders.size(); i < size; i++) {
            System.out.println(responseHeaders.name(i) + ": " + responseHeaders.value(i));
          }

          System.out.println(responseBody.string());//獲取字串
          //response.body().bytes()         二進位制位元組
          //response.body().byteStream()    獲取位元流  
        }
      }
    });
  }

  public static void main(String... args) throws Exception {
    new AsynchronousGet().run();
  }
}

Post

post string

public final class PostString {
  public static final MediaType MEDIA_TYPE_MARKDOWN
      = MediaType.parse("text/x-markdown; charset=utf-8");

  private final OkHttpClient client = new OkHttpClient();

  public void run() throws Exception {
    String postBody = ""
        + "Releases\n"
        + "--------\n"
        + "\n"
        + " * _1.0_ May 6, 2013\n"
        + " * _1.1_ June 15, 2013\n"
        + " * _1.2_ August 11, 2013\n";

    Request request = new Request.Builder()
        .url("https://api.github.com/markdown/raw")
        .post(RequestBody.create(MEDIA_TYPE_MARKDOWN, postBody))
        .build();

    //同步
    try (Response response = client.newCall(request).execute()) {
      if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

      System.out.println(response.body().string());
    }

    /*非同步
    client.newCall(request).enqueue(new Callback() {
        ***
    });
    */
  }

  public static void main(String... args) throws Exception {
    new PostString().run();
  }
}