public String  getWebServiceByParams(String param){   //获取基金缴付记录

        // Post请求的url，与get不同的是不需要带参数

        URL postUrl = null;

        try {

            postUrl = new URL(""); //***这里写webService接口地址

        } catch (MalformedURLException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        // 打开连接

        HttpURLConnection connection = null;

        try {

            connection = (HttpURLConnection) postUrl.openConnection();

        } catch (IOException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        }

        // 设置是否向connection输出，因为这个是post请求，参数要放在

        // http正文内，因此需要设为true

        connection.setDoOutput(true);

        // Read from the connection. Default is true.

        connection.setDoInput(true);

        // 默认是 GET方式

        try {

            connection.setRequestMethod("POST");

        } catch (ProtocolException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        // Post 请求不能使用缓存

        connection.setUseCaches(false);

        //设置本次连接是否自动重定向

        connection.setInstanceFollowRedirects(true);

        // 配置本次连接的Content-type，配置为application/x-www-form-urlencoded的

        // 意思是正文是urlencoded编码过的form参数

        connection.setRequestProperty("Content-Type","application/x-www-form-urlencoded");

        // 连接，从postUrl.openConnection()至此的配置必须要在connect之前完成，

        // 要注意的是connection.getOutputStream会隐含的进行connect。

        try {

            connection.connect();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        DataOutputStream out = null;

        try {

            out = new DataOutputStream(connection

                    .getOutputStream());

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        // 正文，正文内容其实跟get的URL中 '? '后的参数字符串一致

        String content = null;

        try {

            content = "createDate=" + URLEncoder.encode(param, "UTF-8");   //这里改成你的参数名字

        } catch (UnsupportedEncodingException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        // DataOutputStream.writeBytes将字符串中的16位的unicode字符以8位的字符形式写到流里面

        try {

            out.writeBytes(content);

        } catch (IOException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        }

        //流用完记得关

        try {

            out.flush();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        try {

            out.close();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        //获取响应

        BufferedReader reader = null;

        try {

            reader = new BufferedReader(new InputStreamReader(connection.getInputStream()));

        } catch (IOException e1) {

            // TODO Auto-generated catch block

            e1.printStackTrace();

        }

        String line = null;

        //        while ((line = reader.readLine()) != null){

        //            System.out.println("line---?"+line);

        //

        //        }

        try {

            line = reader.readLine();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        System.out.println("line---?"+line);

        try {

            reader.close();

        } catch (IOException e) {

            // TODO Auto-generated catch block

            e.printStackTrace();

        }

        //该干的都干完了,记得把连接断了

        connection.disconnect();

        return line;

    }