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8月24日
Java中调用WebService 今天被一个问题搞得挺郁闷得。整整弄了一天也没有得出个结果。项目中要调用一个webservice，
传入一个姓名，输出一串字符串。之前我也没有太多经验，网上找了些许资料，大概得参考了一下，自己
编写了几个类。大致如下：
package cn.sh.ideal.util;
import java.io.*;
import java.net.*; import javax.xml.parsers.*; import org.w3c.dom.*; public class RTXWebservice { private final static String ServiceURI="http://12.110.250.18/RTXMessageWebService/MessageRTX.asmx";
public RTXWebservice() { try { jbInit(); } catch (Exception ex) { ex.printStackTrace(); } } private static String getSoapRequest(String name){//name为要查询的人名
try { Class cls=Object.class; FileReader isr = new FileReader("../src/cn/sh/ideal/xml/rtxsoap.xml"); BufferedReader reader=new BufferedReader(isr);
String soap=""; String tmp; while((tmp=reader.readLine())!=null) { soap+=tmp; System.out.println("soap1:"+soap); } reader.close(); isr.close(); return soap.replaceAll("name",name);//用传入的参数name替换原来xml中的name } catch (Exception ex) { ex.printStackTrace(); return null; } } /*
*返回InputStream是因为w3c DOM中Document的parse方法可 *以接受InputStream类型的参数，方面在下一步对XML的解释 */ private static InputStream getSoapInputStream(String name)throws Exception { try { String soap=getSoapRequest(name); if(soap==null) { return null; } URL url=new URL(ServiceURI); URLConnection conn=url.openConnection(); conn.setUseCaches(false); conn.setDoInput(true); conn.setDoOutput(true); conn.setRequestProperty("Content-Length", Integer.toString(soap.length()));
conn.setRequestProperty("Content-Type", "text/xml; charset=utf-8"); conn.setRequestProperty("SOAPAction","\"http:///GetRTXSessionKey\""); OutputStream os=conn.getOutputStream();
OutputStreamWriter osw=new OutputStreamWriter(os,"utf-8"); osw.write(soap); osw.flush(); osw.close(); InputStream is=conn.getInputStream();
return is; } catch(Exception e) { e.printStackTrace(); return null; } } /* *用W3C DOM对返回的XML进行解释 *@param name String 姓名 *@return String rtxSessionKey */ public static String getRTXSessionKey(String name) { try { Document doc; DocumentBuilderFactory dbf=DocumentBuilderFactory.newInstance(); dbf.setNamespaceAware(true); DocumentBuilder db=dbf.newDocumentBuilder(); InputStream is=getSoapInputStream(name); doc=db.parse(is); NodeList nl=doc.getElementsByTagName("GetRTXSessionKeyResult"); Node n=nl.item(0); String rtxsessionkey=n.getFirstChild().getNodeValue(); is.close(); return rtxsessionkey; } catch(Exception e) { e.printStackTrace(); return null; } } private void jbInit() throws Exception {
} } rtxsoap.xml文件如下：
<?xml version="1.0" encoding="utf-8"?>
<soap:Envelope xmlns:xsi="http://www./2001/XMLSchema-instance" xmlns:xsd="http://www./2001/XMLSchema" xmlns:soap="http://schemas./soap/envelope/"> <soap:Body> <GetRTXSessionKey xmlns="http:///"> <strLoginID>name</strLoginID> </GetRTXSessionKey> </soap:Body> </soap:Envelope> 我先把webservice得wsdl文件找到
把request部分得xml粘贴下来保存在一个rtxsoap.xml得文件中并放到根目录＋\src\cn\sh\ideal\xml\文件
的一个GetRTXSessionKey方法的。根据wsdl文件中的request和response的xml文件我写了上面的
方法。刚开始我用InputStreamReader isr=new InputStreamReader(cls.getResourceAsStream("../src/cn/sh/ideal/xml/rtxsoap.xml"))这种形式去找rtxsoap.xml文件作解析，想把参数弄进去，然后生
成个新的request的xml发给webservice来获取响应，可就是怎么也找不到那个rtxsoap.xml（它明明就是在那里
，可就是找不到，换了很多路径都是不对，估计问题还是处在路径上）后来换用 FileReader isr = new FileReader("../src/cn/sh/ideal/xml/rtxsoap.xml");方法。这下能够读到rtxsoap.xml了。但是一到要与服务器用soap通信
的时候就报错误了，如下：
java.io.IOException: Server returned HTTP response code: 500 for URL: http://12.110.250.18/RTXMessageWebService/MessageRTX.asmx
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:791)
at cn.sh.ideal.util.RTXWebservice.getSoapInputStream(RTXWebservice.java:83)
at cn.sh.ideal.util.RTXWebservice.getRTXSessionKey(RTXWebservice.java:105)
at org.apache.jsp.index_jsp._jspService(index_jsp.java:69)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:137)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:210)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:295)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:241)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:256)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2422)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:171)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:163)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:199)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:828)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:700)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:584)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:534)
找了好久，试了n此也没有解决。其实jbuilder是可以用wizzard来自动的加载一个webservice的（就像.net一样点几下就ok了）
不过项目经理说这样不太好，部署的时候要对axis作配置，可能不太方便。所以还是卡在上面的问题上了。希望有高人能帮
我看看，到底是哪里除了问题。我也会继续的研究下去，争取早日给自己一个答案。
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