android 使用httpURLConnection post方式访问接口的简单工具包

回滚接口：

/**
 * Created by shi.yy on 2017/9/29.
 */

public interface HttpCallbackListener {
    //回滚的处理
    void onFinish(String response);
    //异常的处理
    void onError(Exception e);
}

*******************************

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

/**
 * Created by shi.yy on 2017/9/29.
 * str==json
 * address==url
 * lisenter==数据回调处理
 */

public class HttpUtil {
    public static void sendHttpRequest(final String str,final String address,final HttpCallbackListener listener){
        new Thread(new Runnable() {
            @Override
            public void run() {
                HttpURLConnection conn=null;
                try{
                    URL url = new URL(address);
                    conn=(HttpURLConnection) url.openConnection();
                    conn.setRequestMethod("POST");
                    conn.setConnectTimeout(8000);
                    conn.setReadTimeout(8000);
                    conn.setDoInput(true);
                    conn.setDoOutput(true);
                    conn.setRequestProperty("Content-Type",  "application/json");
                    DataOutputStream out = new DataOutputStream(conn.getOutputStream());
                    out.writeBytes(str);
                    out.flush();
                    InputStream in = conn.getInputStream();
                    BufferedReader reader = new BufferedReader(new InputStreamReader(in));
                    StringBuilder response = new StringBuilder();
                    String line;
                    while((line=reader.readLine())!=null){
                        response.append(line);
                    }
                    if(listener!=null){
                        //回调onFinish（）方法
                        listener.onFinish(response.toString());
                    }
                }catch (Exception e){
                    System.out.println("异常是："+e.getMessage());
                    e.getMessage();
                    if (listener != null) {
                        listener.onError(e);
                    }

                }finally {
                    if(conn!=null){
                        conn.disconnect();
                    }
                }
            }
        }).start();
    }
}

使用方法：

//str1为传到服务器的json格式的数据，

HttpUtil.sendHttpRequest(str1,url, new HttpCallbackListener() {
    @Override
    public void onFinish(String response) {
      //对返回数据的处理
    }

    @Override
    public void onError(Exception e) {
 //对异常信息的处理
    }});