使用jasper生成pdf文件时报错 Error loading object from file ：E:\...，请高手指点 ，急~

weed_refined 2008-08-06 05:10:40
我用Ireport生成一个jrxml文件，ireport与jasperreport的版本都是2.0.2,在ireport界面里面是可以查看的，编译也成功了，可是当我在servlet中运行的时候却出现了错误。

jsp文件内容如下 ：
<%@ page language="java" pageEncoding="GBK"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Jasper test </title>

<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
</head>
<body onload="document.forms[0].submit()">
<form action="jasper.pdf" method="get"> </form>
</body>
</html>

我的servlet中的方法如下：
public void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
File reportFile = new File(getServletContext().getRealPath("/report/test.jrxml"));
Connection conn = null;
try {
Class.forName("oracle.jdbc.driver.OracleDriver");
} catch (ClassNotFoundException e3) {
e3.printStackTrace();
}
String url = "jdbc:oracle:thin:@192.168.8.66:1521:idas";
String username = "idastest4";
String pwd = "idastest4";
System.out.println("----------Connect start ");

try {
conn = DriverManager.getConnection(url,username,pwd);

Map reportMap = new HashMap();
byte[] bytes = {};

// 产生错误的地方
bytes = JasperRunManager.runReportToPdf(reportFile.getPath(),reportMap,conn);

response.setContentType("application/pdf");
response.setContentLength(bytes.length);

ServletOutputStream sos = response.getOutputStream();
sos.write(bytes,0,bytes.length);
sos.flush();
sos.close();

} catch (JRException e1) {
e1.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
} finally {
if(conn!=null){
try {
conn.close();
System.out.println("----------Connect end ");
} catch (SQLException e) {
e.printStackTrace();
}
}
}

}
-----------------------------
执行jsp时报错如下：
----------Connect start
net.sf.jasperreports.engine.JRException: Error loading object from file : E:\workspace\jasperreports\WebRoot\report\test.jrxml
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:92)
at net.sf.jasperreports.engine.JasperFillManager.fillReport(JasperFillManager.java:232)
at net.sf.jasperreports.engine.JasperRunManager.runReportToPdf(JasperRunManager.java:203)
at com.william.jasper.controller.JasperController.service(JasperController.java:45)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:174)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:151)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:874)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Thread.java:595)
Caused by: java.io.StreamCorruptedException: invalid stream header
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:764)
at java.io.ObjectInputStream. <init>(ObjectInputStream.java:277)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:87)
... 18 more
----------Connect end

我注意到E:\workspace\jasperreports\WebRoot\report\test.jrxml这个文件路径是对的，且改成.jasper后缀也不行。急死了~
请高手帮忙解决一下，谢谢！
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yanzi326 2010-12-01
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这个问题还没解决吗
透明陳 2010-10-13
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("/report/test.jrxml") 改成 ("/report/test.jasper）
Code805772847 2010-08-02
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O 原来如此
iraqdream 2009-07-09
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问题解决了：原来是jar的问题，是我的jasperreports-3.5.0.jar用到了版本过低得。
iraqdream 2009-07-09
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我跟楼主出现了一样的问题，在其他地方运行好好的在servlet中运行就出现：
java.io.InvalidClassException: net.sf.jasperreports.engine.base.JRBaseReport; local class incompatible: stream classdesc serialVersionUID = 10200, local class serialVersionUID = 10003
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:85)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:62)
at com.szkingdom.report.action.ILabReportTestAction.doPost(ILabReportTestAction.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.szkingdom.kjax.filter.UserSessionFilter.doFilter(UserSessionFilter.java:105)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)

NESTED BY :
java.io.InvalidClassException: net.sf.jasperreports.engine.base.JRBaseReport; local class incompatible: stream classdesc serialVersionUID = 10200, local class serialVersionUID = 10003
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:85)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:62)
at com.szkingdom.report.action.ILabReportTestAction.doPost(ILabReportTestAction.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.szkingdom.kjax.filter.UserSessionFilter.doFilter(UserSessionFilter.java:105)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)

NESTED BY :
net.sf.jasperreports.engine.JRException: Error loading object from file : D:\mywork\webkbss\webkbss\Reports\report1.jasper
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:89)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:62)
at com.szkingdom.report.action.ILabReportTestAction.doPost(ILabReportTestAction.java:49)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at com.szkingdom.kjax.filter.UserSessionFilter.doFilter(UserSessionFilter.java:105)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.InvalidClassException: net.sf.jasperreports.engine.base.JRBaseReport; local class incompatible: stream classdesc serialVersionUID = 10200, local class serialVersionUID = 10003
at java.io.ObjectStreamClass.initNonProxy(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readNonProxyDesc(Unknown Source)
at java.io.ObjectInputStream.readClassDesc(Unknown Source)
at java.io.ObjectInputStream.readOrdinaryObject(Unknown Source)
at java.io.ObjectInputStream.readObject0(Unknown Source)
at java.io.ObjectInputStream.readObject(Unknown Source)
at net.sf.jasperreports.engine.util.JRLoader.loadObject(JRLoader.java:85)
... 21 more

我用的Java代码是：
String filePath ="D:/report1.jasper";
List pageValue=new ArrayList();

//生成对Jasper文件的引用
File reportFile = new File(filePath);
if (!reportFile.exists())
throw new JRRuntimeException(
"File WebappReport.jasper not found. The report design must be compiled first.");

//报表装填
try{
JasperReport jasperReport = (JasperReport) JRLoader.loadObject(reportFile.getPath());
Map parameters = new HashMap();

JasperPrint jasperPrint =
JasperFillManager.fillReport(
jasperReport,
parameters,
SRDataSourceFactory.createILabReportTestDS(pageValue)
);
}catch(Exception e){
e.printStackTrace();
}
laorer 2008-08-07
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我一般用JFillManager.fill()，这个要传.jasper文件过去，
JRunManager没用过，不知道要传的是什么文件，可能是jprint文件吧
Landor2004 2008-08-07
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或者你，用代码来编译这个jrxml文件，比如
       String reportDesignXML = "..........................test.jrxml";

       InputStream in = Thread.currentThread().getContextClassLoader()

                .getResourceAsStream(reportDesignXML);

       //此处将jrxml文件编译成jasper文件

       JasperReport jasperReport = JasperCompileManager.compileReport(in);

       //调用runReportToPdf来生成报表

       bytes = JasperRunManager.runReportToPdf(jasperReport,reportMap,conn);
Landor2004 2008-08-07
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test.jrxml 只是xml文件，还没有进行编译呢，你把编译后的文件拷贝过来

一般的编译后的文件在ireport的安装目录下就能找到，名字叫做test.jasper




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