HTTP Status 500 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: An error occurred at line:18 in the jsp file:/test_jsp.jsp Cannot invoke write(String) on the primitive type void 15:} 16:Date now1=new Date(); 17:out.println("执行后时间:"+DateFormat.getTimeInstance().format(now1)+" "); 18:out.println("程序总共循环了:"+count+"次 "); 19:%> 20: 21: An error occurred at line:18 in the jsp file:/test_jsp.jsp Syntax error on tokens,delete these tokens 15:} 16:Date now1=new Date(); 17:out.println("执行后时间:"+DateFormat.getTimeInstance().format(now1)+" "); 18:out.println("程序总共循环了:"+count+"次 "); 19:%> 20: 21: Stacktrace: org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:92) org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330) org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:423) org.apache.jasper.compiler.Compiler.compile(Compiler.java:317) org.apache.jasper.compiler.Compiler.compile(Compiler.java:295) org.apache.jasper.compiler.Compiler.compile(Compiler.java:282) org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:586) org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:317) org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:342) org.apache.jasper.servlet.JspServlet.service(JspServlet.java:267) javax.servlet.http.HttpServlet.service(HttpServlet.java:717) note The full stack trace of the root cause is available in the Apache Tomcat/6.0.18 logs. -------------------------------------------------------------------------------- Apache Tomcat/6.0.18 以下是源代码; 测试JSP运行时间