AndroidOkHttp基本使用詳解

OkHttpClient client = new OkHttpClient();

String run(String url) throws IOException {
  Request request = new Request.Builder().url(url).build();
  Response response = client.newCall(request).execute();
  if (response.isSuccessful()) {
    return response.body().string();
  } else {
    throw new IOException("Unexpected code " + response);
  }
}

public boolean isSuccessful()
Returns true if the code is in [200..300), which means the request was successfully received, understood, and accepted.

public final String string() throws IOException
Returns the response as a string decoded with the charset of the Content-Type header. If that header is either absent or lacks a charset, this will attempt to decode the response body as UTF-8.
Throws:
IOException

public final InputStream byteStream()

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();
  Response response = client.newCall(request).execute();
  f (response.isSuccessful()) {
    return response.body().string();
  } else {
    throw new IOException("Unexpected code " + response);
  }
}

OkHttpClient client = new OkHttpClient();
String post(String url, String json) throws IOException {

  RequestBody formBody = new FormEncodingBuilder()
  .add("platform", "android")
  .add("name", "bug")
  .add("subject", "XXXXXXXXXXXXXXX")
  .build();

  Request request = new Request.Builder()
   .url(url)
   .post(body)
   .build();

  Response response = client.newCall(request).execute();
  if (response.isSuccessful()) {
    return response.body().string();
  } else {
    throw new IOException("Unexpected code " + response);
  }
}

import java.io.IOException;
import java.util.List;
import java.util.concurrent.TimeUnit;
import org.apache.http.client.utils.URLEncodedUtils;
import org.apache.http.message.BasicNameValuePair;
import cn.wiz.sdk.constant.WizConstant;
import com.squareup.okhttp.Callback;
import com.squareup.okhttp.OkHttpClient;
import com.squareup.okhttp.Request;
import com.squareup.okhttp.Response; 
 
public class OkHttpUtil {
  private static final OkHttpClient mOkHttpClient = new OkHttpClient();
  static{
    mOkHttpClient.setConnectTimeout(30, TimeUnit.SECONDS);
  }
  /**
   * 該不會(huì)開(kāi)啟異步線程。
   * @param request
   * @return
   * @throws IOException
   */
  public static Response execute(Request request) throws IOException{
    return mOkHttpClient.newCall(request).execute();
  }
  /**
   * 開(kāi)啟異步線程訪問(wèn)網(wǎng)絡(luò)
   * @param request
   * @param responseCallback
   */
  public static void enqueue(Request request, Callback responseCallback){
    mOkHttpClient.newCall(request).enqueue(responseCallback);
  }
  /**
   * 開(kāi)啟異步線程訪問(wèn)網(wǎng)絡(luò), 且不在意返回結(jié)果（實(shí)現(xiàn)空callback）
   * @param request
   */
  public static void enqueue(Request request){
    mOkHttpClient.newCall(request).enqueue(new Callback() {
      
      @Override
      public void onResponse(Response arg0) throws IOException {
        
      }
      
      @Override
      public void onFailure(Request arg0, IOException arg1) {
        
      }
    });
  }
  public static String getStringFromServer(String url) throws IOException{
    Request request = new Request.Builder().url(url).build();
    Response response = execute(request);
    if (response.isSuccessful()) {
      String responseUrl = response.body().string();
      return responseUrl;
    } else {
      throw new IOException("Unexpected code " + response);
    }
  }
  private static final String CHARSET_NAME = "UTF-8";
  /**
   * 這里使用了HttpClinet的API。只是為了方便
   * @param params
   * @return
   */
  public static String formatParams(List<BasicNameValuePair> params){
    return URLEncodedUtils.format(params, CHARSET_NAME);
  }
  /**
   * 為HttpGet 的 url 方便的添加多個(gè)name value 參數(shù)。
   * @param url
   * @param params
   * @return
   */
  public static String attachHttpGetParams(String url, List<BasicNameValuePair> params){
    return url + "?" + formatParams(params);
  }
  /**
   * 為HttpGet 的 url 方便的添加1個(gè)name value 參數(shù)。
   * @param url
   * @param name
   * @param value
   * @return
   */
  public static String attachHttpGetParam(String url, String name, String value){
    return url + "?" + name + "=" + value;
  }
}