ServletContext 类型的 getContextPath() 方法未定义
这是我的JSP：
<HTML>
<BODY >
path : <%= application.getContextPath() %>
</BODY>
</HTML>
这个文件在Tomcat7和Tomcat6中是正确的，但是当我在我的Cpanel托管的Tomcat 5.32中请求JSP页面时，我得到以下异常：
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 3 in the jsp file: /cal2.jsp
The method getContextPath() is undefined for the type ServletContext
1: <HTML>
2: <BODY>
3: path : <%= application.getContextPath() %>
4: </BODY>
5: </HTML>
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:93)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:328)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:307)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:565)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:309)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
javax.servlet.http.HttpServlet.service(HttpServlet.java:72
这个问题是如何引起的以及如何解决它？
Here is my JSP:
<HTML>
<BODY >
path : <%= application.getContextPath() %>
</BODY>
</HTML>
This file is correct in Tomcat7 and Tomcat6, but when I request the JSP page in Tomcat 5.32 of my Cpanel hosting, I get the following exception:
org.apache.jasper.JasperException: Unable to compile class for JSP:
An error occurred at line: 3 in the jsp file: /cal2.jsp
The method getContextPath() is undefined for the type ServletContext
1: <HTML>
2: <BODY>
3: path : <%= application.getContextPath() %>
4: </BODY>
5: </HTML>
Stacktrace:
org.apache.jasper.compiler.DefaultErrorHandler.javacError(DefaultErrorHandler.java:93)
org.apache.jasper.compiler.ErrorDispatcher.javacError(ErrorDispatcher.java:330)
org.apache.jasper.compiler.JDTCompiler.generateClass(JDTCompiler.java:451)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:328)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:307)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:295)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:565)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:309)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:308)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:259)
javax.servlet.http.HttpServlet.service(HttpServlet.java:72
How is this problem caused and how can I solve it?
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getContextPath()方法已在规范的 2.5 版本中添加到ServletContext中，但 Tomcat 5 仅实现了 2.4。然而，request.getContextPath()做同样的事情。The
getContextPath()method was added toServletContextin version 2.5 of the spec, but Tomcat 5 only implements 2.4. However,request.getContextPath()does the same thing.