簡單的get與post請求工具類（複製即可）

package net.meixintong.vo;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.Closeable;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.io.OutputStreamWriter;
import java.net.HttpURLConnection;
import java.net.URL;

public class OneTest {
 /**
     * 提交一個post請求，並獲得請求的返回值
     * @return
* @throws Exception 
     */
    public static Object doGets(String url, String type ) throws Exception {
        return esayGet(url,  type);
    }
    
    /**
     * 提交一個post請求，並獲得請求的返回值
     * @return
     * @throws Exception 
     */
    public static Object doPosts(URL postUrl, String type) throws Exception {
        return doPost(postUrl,  type);
    }

/**
     * 簡單的Get請求
     * @param weburl
     * @param charsetName 編碼
     * @return
     * @throws Exception 
     */
    public static Object esayGet(String weburl, String charsetName) throws Exception{
    HttpURLConnection connection = null;
        ObjectInputStream ois = null;
        OutputStreamWriter out = null;
        ObjectOutputStream oos = null;
        try {
        URL url = new URL(weburl);
            // 新建連接實例
            connection = (HttpURLConnection) url.openConnection();  
    connection.setDoOutput(true);// 打開寫入屬性  
    connection.setDoInput(true);// 打開讀取屬性  
    connection.setRequestMethod("GET");// 設置提交方法  
    connection.setUseCaches(false);
    connection.setInstanceFollowRedirects(true);
    connection.setConnectTimeout(1000 * 5);// 連接超時時間  
    connection.setReadTimeout(1000 * 5);// 連接超時時間  
    connection.connect();  
            if (200 == connection.getResponseCode()) {
                InputStream instream = connection.getInputStream();  
                byte[] data = read(instream);  
                String jsonStr = new String(data, charsetName);
                return jsonStr;
            } else{
            throw new RuntimeException(weburl + "無法獲取數據,返回類型爲：" + connection.getResponseCode());
            }
        } finally {
            close(out);
            close(oos);
            close(ois);
            if (connection != null) {
                connection.disconnect();
            }
        }
    }
    
    /**
  * 返回json數據專用
  * @param postUrl 請求的url需加 ?
  * @param cont
  * @return json
  */
  public  static String doPost(URL postUrl,String cont){
  String line = null;
  try {
  HttpURLConnection connection = (HttpURLConnection) postUrl.openConnection();
  connection.setDoOutput(true);
  connection.setDoInput(true);
  connection.setRequestMethod("POST");
  connection.setUseCaches(false);
  connection.setInstanceFollowRedirects(true);
  connection.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");
  connection.connect();
  DataOutputStream out = new DataOutputStream(connection.getOutputStream());
  out.writeBytes(cont);
  out.flush();
  out.close();
  BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), "utf-8"));
  while ((line = reader.readLine()) != null) {
  return line;
  }
  reader.close();
  connection.disconnect();
  } catch (Exception e) {
  e.printStackTrace();
  }
  return line;
  }
      
    public static void close(Closeable out) {
        try {
            if(out != null){
                out.close();
            }
        } catch (IOException e) {
        }
    }
    
    /** 
     * 讀取輸入流爲byte[]數組 
     */  
    public static byte[] read(InputStream instream) throws IOException {  
        ByteArrayOutputStream bos = new ByteArrayOutputStream();  
        byte[] buffer = new byte[1024];  
        int len = 0;  
        while ((len = instream.read(buffer)) != -1)  
        {  
            bos.write(buffer, 0, len);  
        }  
        return bos.toByteArray();  
    }  
    
    public static void main(String[] args) throws Exception {
System.out.println( esayGet("http://datachina.win/app/getTest.json", "utf-8"));
}

}

待完善