Perhaps JAVA_HOME does not point to the JDK问题 （JDK1.6.0+ Tomcat5.0 时出现）
2010-09-21 15:03
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文章分类:Java编程
文章分类:Java编程
Perhaps JAVA_HOME does not point to the JDK问题
以上jdk1.6.0_03 +tomcat5.0.28出现上述现象，并按相应方法解决
Perhaps JAVA_HOME does not point to the JDK问题
转自： http://zfsn.javaeye.com/blog/738444
以上jdk1.6.0_03 +tomcat5.0.28出现上述现象，并按相应方法解决
文章分类:Java编程
| 错误页面提示： |
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 No Java compiler was found to compile the generated source for the JSP. This can usually be solved by copying manually $JAVA_HOME/lib/tools.jar from the JDK to the common/lib directory of the Tomcat server, followed by a Tomcat restart. If using an alternate Java compiler, please check its installation and access path. org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:83) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:315) org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:406) org.apache.jasper.compiler.Compiler.compile(Compiler.java:463) org.apache.jasper.compiler.Compiler.compile(Compiler.java:442) org.apache.jasper.compiler.Compiler.compile(Compiler.java:430) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:274) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:810) |
| Unable to find a javac compiler;Perhaps JAVA_HOME does not point to the JDK异常产生原因和解决方法。 安装tomcat的时候指定了jre的路径，导致tomcat_home, java_home都已经添加到了环境变量里，但启动jsp的时候却出现了以下的异常： Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK 产生的原因是java.home指到$JAVA_HOME/jre下了，而其lib下的tools.jar跟$JAVA_HOME/lib/tools.jar不一样，编译jsp的时候需要用到后者. 注: java.home在运行的时候就会指向$JRE_HOME. jdk1.6.0_03 都会出现这种情况. 修改方法：在tomcat控制台(双击tomcate5w.exe)java选项-〉java virtual machine 设置为%java_home%/jre/bin/server/jvm.dll tomcat控制台java选项-〉Java classpath: %tomcat_home%/bin/bootstrap.jar;%java_home%/lib/tools.jar 注：%java_home%、%tomcat_home分别指jdk、tomcat的安装根目录 tomcat_home, java_home都已经添加到了环境变量里，但启动jsp的时候却出现了以下的异常 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 解决方案： 只要把JAVA_HOME/lib/tools.jar拷到TOMCAT_HOME/common/lib下，重启动Tomcat，OK |
| 错误页面提示： |
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 No Java compiler was found to compile the generated source for the JSP. This can usually be solved by copying manually $JAVA_HOME/lib/tools.jar from the JDK to the common/lib directory of the Tomcat server, followed by a Tomcat restart. If using an alternate Java compiler, please check its installation and access path. org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:83) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:315) org.apache.jasper.compiler.Compiler.generateClass(Compiler.java:406) org.apache.jasper.compiler.Compiler.compile(Compiler.java:463) org.apache.jasper.compiler.Compiler.compile(Compiler.java:442) org.apache.jasper.compiler.Compiler.compile(Compiler.java:430) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:511) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:274) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236) javax.servlet.http.HttpServlet.service(HttpServlet.java:810) |
转自： http://zfsn.javaeye.com/blog/738444
| Unable to find a javac compiler;Perhaps JAVA_HOME does not point to the JDK异常产生原因和解决方法。 安装tomcat的时候指定了jre的路径，导致tomcat_home, java_home都已经添加到了环境变量里，但启动jsp的时候却出现了以下的异常： Unable to find a javac compiler; com.sun.tools.javac.Main is not on the classpath. Perhaps JAVA_HOME does not point to the JDK 产生的原因是java.home指到$JAVA_HOME/jre下了，而其lib下的tools.jar跟$JAVA_HOME/lib/tools.jar不一样，编译jsp的时候需要用到后者. 注: java.home在运行的时候就会指向$JRE_HOME. jdk1.6.0_03 都会出现这种情况. 修改方法：在tomcat控制台(双击tomcate5w.exe)java选项-〉java virtual machine 设置为%java_home%/jre/bin/server/jvm.dll tomcat控制台java选项-〉Java classpath: %tomcat_home%/bin/bootstrap.jar;%java_home%/lib/tools.jar 注：%java_home%、%tomcat_home分别指jdk、tomcat的安装根目录 tomcat_home, java_home都已经添加到了环境变量里，但启动jsp的时候却出现了以下的异常 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 解决方案： 只要把JAVA_HOME/lib/tools.jar拷到TOMCAT_HOME/common/lib下，重启动Tomcat，OK |
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