解决java访问.netWebService的常见问题

到公司没多久，写了一个java调用.net写的webService结果期间用各种方法测试都没有完成，总是抛出异常，最后直接使用SOAP消息去进行调用才成功了，具体代码如下，仅供参考：
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;

public class QueryDataUtil {
    public static String getOpdetailString(String regoinId,String regoinName,String signalName) throws Exception{
        String xml ="";
        xml="<?xml version=\"1.0\" encoding=\"UTF-8\"?>";
        xml +="<soapenv:Envelope xmlns:soapenv=\"http://schemas.xmlsoap.org/soap/envelope/\" xmlns:soap=\"http://www.w3.org/2003/05/soap-envelope\" xmlns:tem=\"http://tempuri.org/\" xmlns:SOAP-ENC=\"http://schemas.xmlsoap.org/soap/encoding/\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xmlns:xsd=\"http://www.w3.org/2001/XMLSchema\">";
        xml +="<soapenv:Header/>";
        xml +="<soapenv:Body>";
          xml += "<tem:QueryDeviceRealData><tem:regionId>"+regoinId+"</tem:regionId><tem:regionName>"+regoinName+"</tem:regionName><tem:signalName>"+signalName+"</tem:signalName></tem:QueryDeviceRealData>";
          String xml1="</soapenv:Body>";
             xml1+="</soapenv:Envelope>";
             xml +=xml1;
             String urlString="http://IP:端口/xxxx?wsdl";
              HttpURLConnection httpConn = null;
           OutputStream out = null;
           String returnXml="";
           //设置批次号
               DateFormat df = new SimpleDateFormat("yyyyMMddHHmmss");
              String s= df.format(new Date());
              System.out.println("开始");
            httpConn = (HttpURLConnection) new URL(urlString).openConnection();
            httpConn.setRequestProperty("Content-Type", "text/xml; charset=utf-8");
            httpConn.setRequestProperty("SOAPAction", "xxx");
            httpConn.setRequestMethod("POST");
            httpConn.setDoOutput(true);
            httpConn.setDoInput(true);
            httpConn.connect();
            out = httpConn.getOutputStream(); // 获取输出流对象
            httpConn.getOutputStream().write(xml.getBytes()); // 将要提交服务器的SOAP请求字符流写入输出流
            out.flush();
            out.close();
            int code = httpConn.getResponseCode(); // 用来获取服务器响应状态
            String tempString = null;
            StringBuffer sb1 = new StringBuffer();
            if (code == HttpURLConnection.HTTP_OK) {
             BufferedReader reader = new BufferedReader(new InputStreamReader(httpConn.getInputStream(), "UTF-8"));
             while ((tempString = reader.readLine()) != null) {
              sb1.append(tempString);
             }
             if (null != reader) {
              reader.close();
             }
            } else {
             BufferedReader reader = new BufferedReader(new InputStreamReader(httpConn.getErrorStream(), "UTF-8"));
             // 一次读入一行，直到读入null为文件结束
             while ((tempString = reader.readLine()) != null) {
              sb1.append(tempString);
             }
             if (null != reader) {
              reader.close();
             }
            }
            //响应报文
            returnXml=sb1.toString();
            System.out.println("returnOpdetail==="+returnXml);
            return returnXml;
    }
}
望大家有什么意见多多提议哈