Tomcat 配置
安装Tomcat 5.0能测试通过，但是运行出现以下错误
type :Status report
message: /myjsp/firstjsp.jsp
description: The requested resource (/myjsp/firstjsp.jsp) is not available.
（上面我已经将ＢＯＯＴ中的ＷＥＢ＿ＩＮＦ考到我的目录下）
将firstjsp.jsp考到ＢＯＯＴ文件夹下，出现以下错误
HTTP Status 500 -
--------------------------------------------
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
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)
note The full stack trace of the root cause is available in the Apache Tomcat/5.0.28 logs.
--------------------------------------------
请问是怎么要回事？
[解决办法]
没装jdk或者没找到jdk路径
[解决办法]
lz有没有在环境变量中配置JAVA_HOME?
Perhaps JAVA_HOME does not point to the JDK
[解决办法]
JAVA_HOME指向路径不对，怎么配的？
[解决办法]
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
[解决办法]
请问是用eclipse来启动Tomcat的么?是不是用了eclipse 自带的jdk 在eclipse的prefernces中指定
[解决办法]
上面的提示说你的JAVA编译器没有找到，可以先在Command Line里面验证一下你的JDK安装是不是正确的。
可以在Command Line里面输入javac -help
看看是不是显示正常的信息
如果显示什么Javac不是内部或者外部命令，就说明你的JAVA_HOME设置的部队了，在编译时就找不到JAVA编译器了。
[解决办法]
root cause
Unable to find a javac compiler;///找不到javac编译器.你能启动TOMCAT只是因为它用的是JRE.而编译JSP文件是要用到JAVAC的.它属于JDK.
com.sun.tools.javac.Main is not on the classpath.
Perhaps JAVA_HOME does not point to the JDK//所以你的JAVA_HOME要指定到JDK安装到的主目录而不是JRE
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)
[解决办法]
安装环境没有配置好，去baidu下，好好配置下环境变量
[解决办法]
初学的时候请学会使用goolge/baidu
[解决办法]
你的问题解决没？我也碰到一样的问题的，帮我解决一下吧！谢谢了！
我的异常网推荐解决方案：The server encountered an internal error () that prevented it from fulfilling this request.,http://www.myexception.cn/java-web/317.html
我的异常网推荐解决方案：org.apache.jasper.JasperException: Unable to compile class,http://www.myexception.cn/j2ee/2308.html
