应用错误收集

我使用NetBeans开发了一个.jsp网站。当我从NetBeans运行它时，它运行得非常好，但是当我清理并构建项目并从dist文件夹复制.war文件并复制到TomCat 5.0的webapps文件夹中时，该文件夹与{{1}一起安装正在执行文件。

错误显示：

exception

    org.apache.jasper.JasperException: Unable to compile class for JSP
        org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:97)
        org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:346)
        org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:414)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
        org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

root cause

Unable to find a javac compiler;
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK
    org.apache.tools.ant.taskdefs.compilers.CompilerAdapterFactory.getCompiler(CompilerAdapterFactory.java:106)
        org.apache.tools.ant.taskdefs.Javac.compile(Javac.java:935)
        org.apache.tools.ant.taskdefs.Javac.execute(Javac.java:764)
        org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:382)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:472)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:451)
        org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
        org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511)
        org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:295)
        org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
        org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
        javax.servlet.http.HttpServlet.service(HttpServlet.java:802)

有时在清理和构建项目时，NetBeans中会出现MySQL .jsp即包含库无法删除的错误。

Java java服务器页面和netbeans

1 个答案: