Null Pointer in JSP compile

[nodari]

Hi,

I have a web application deployed in JBoss 4.2.1 GA and when I try to access the JSP pages I get the following error:

Exception

org.apache.jasper.JasperException: Unable to compile class for JSP
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:574)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

Root cause

java.lang.NullPointerException
java.io.Writer.write(Writer.java:126)
java.io.PrintWriter.newLine(PrintWriter.java:408)
java.io.PrintWriter.println(PrintWriter.java:559)
java.io.PrintWriter.println(PrintWriter.java:670)
org.apache.jasper.compiler.ServletWriter.printil(ServletWriter.java:130)
org.apache.jasper.compiler.Generator.genPreamblePackage(Generator.java:454)
org.apache.jasper.compiler.Generator.generatePreamble(Generator.java:557)
org.apache.jasper.compiler.Generator.generate(Generator.java:3371)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:210)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:306)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:273)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:311)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)

Someone can help me with this ?

Thanks in advance,

[raist_majere]

We can't if you don't provide the JSP code. Remember to use to [ code] and [ /code] between your code.

[donald.gregory]

I'm having the same issue. I migrated a web app over from apache tomcat 5.0.28 to jboss 4. I'm using Struts as the framework. My app displays the login screen fine, which is a jsp. But after logging in, the server log spews the same exception as posted in this thread. My WAR file hasn't changed in structure, and I've even tried simplying the jsp page to something as simple as pure html that has some text between tags and I still get the exception when the page is requested.

[lumia]

i m also facing the same issue. i m using tomcat 5.0. The problem is when i m requesting to one servlet page it works fine but after that when i request the jsp page at that time i m getting the following errors:

Exception

org.apache.jasper.JasperException: Unable to compile class for JSP

org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:604)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)

javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

root cause

java.lang.NullPointerException

java.io.Writer.write(Writer.java:140)

java.io.PrintWriter.newLine(PrintWriter.java:436)

java.io.PrintWriter.println(PrintWriter.java:585)

java.io.PrintWriter.println(PrintWriter.java:696)

org.apache.jasper.compiler.ServletWriter.printil(ServletWriter.java:130)

org.apache.jasper.compiler.Generator.genPreamblePackage(Generator.java:479)

org.apache.jasper.compiler.Generator.generatePreamble(Generator.java:582)

org.apache.jasper.compiler.Generator.generate(Generator.java:3437)

org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:231)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:347)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:327)

org.apache.jasper.compiler.Compiler.compile(Compiler.java:314)

org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:592)

org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317)

org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)

org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)

javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

Someone can help me with this ?

Thanks in advance.

[lumia]

hi all,

i was facing the same problem but i have solved it with some updation of code. In my code there is a line for Property prop = System.getProperties(). and at the end of the code i have used prop.clear(). That's why it's cleared all property of the system that's why tomcat can't load the another jsp or servlet page. And whole server is crashed.

Thanks