/** 
     * 發(fā)送POST請(qǐng)求 
     *  
     * @param url 
     *            目的地址 
     * @param parameters 
     *            請(qǐng)求參數(shù)，Map類(lèi)型。 
     * @return 遠(yuǎn)程響應(yīng)結(jié)果 
     */  
    public static String sendPost(String url, Map<String, String> parameters) {  
        String result = "";// 返回的結(jié)果  
        BufferedReader in = null;// 讀取響應(yīng)輸入流  
        PrintWriter out = null;  
        StringBuffer sb = new StringBuffer();// 處理請(qǐng)求參數(shù)  
        String params = "";// 編碼之后的參數(shù)  
        try {  
            // 編碼請(qǐng)求參數(shù)  
            if (parameters.size() == 1) {  
                for (String name : parameters.keySet()) {  
                    sb.append(name).append("=").append(  
                            java.net.URLEncoder.encode(parameters.get(name),  
                                    "UTF-8"));  
                }  
                params = sb.toString();  
            } else {  
                for (String name : parameters.keySet()) {  
                    sb.append(name).append("=").append(  
                            java.net.URLEncoder.encode(parameters.get(name),  
                                    "UTF-8")).append("&");  
                }  
                String temp_params = sb.toString();  
                params = temp_params.substring(0, temp_params.length() - 1);  
            }  
            // 創(chuàng)建URL對(duì)象  
            java.net.URL connURL = new java.net.URL(url);  
            // 打開(kāi)URL連接  
            java.net.HttpURLConnection httpConn = (java.net.HttpURLConnection) connURL  
                    .openConnection();  
            // 設(shè)置通用屬性  
            httpConn.setRequestProperty("Accept", "*/*");  
            httpConn.setRequestProperty("Connection", "Keep-Alive");  
            httpConn.setRequestProperty("User-Agent",  
                    "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1)");  
            // 設(shè)置POST方式  
            httpConn.setDoInput(true);  
            httpConn.setDoOutput(true);  
            // 獲取HttpURLConnection對(duì)象對(duì)應(yīng)的輸出流  
            out = new PrintWriter(httpConn.getOutputStream());  
            // 發(fā)送請(qǐng)求參數(shù)  
            out.write(params);  
            // flush輸出流的緩沖  
            out.flush();  
            // 定義BufferedReader輸入流來(lái)讀取URL的響應(yīng)，設(shè)置編碼方式  
            in = new BufferedReader(new InputStreamReader(httpConn  
                    .getInputStream(), "UTF-8"));  
            String line;  
            // 讀取返回的內(nèi)容  
            while ((line = in.readLine()) != null) {  
                result += line;  
            }  
        } catch (Exception e) {  
            e.printStackTrace();  
        } finally {  
            try {  
                if (out != null) {  
                    out.close();  
                }  
                if (in != null) {  
                    in.close();  
                }  
            } catch (IOException ex) {  
                ex.printStackTrace();  
            }  
        }  
        return result;  
    }