//这是将要调用的静态方法
public static String TestMethod(String str)
{
return str+"aaaaaaaaaaaaaa";
}
//这是ELFunction.tld中对EL函数的说明
<function>
<name>TestMethod</name>
<function-class>com.Huaye.ELFunction.ELFunction</function-class>
<function-signature>String TestMethod(String)</function-signature>
</function>//这是Web.xml中对EL的配置<jsp-config> <taglib>
<taglib-uri>/intercept</taglib-uri>
<taglib-location>/WEB-INF/tlds/ELFunction.tld</taglib-location>
</taglib> </jsp-config>
//最后是JSP中的代码了<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib prefix="inter" uri="/intercept" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'MyJsp.jsp' starting page</title>
</head>
<body>
${inter:TestMethod("a") }
</body>
</html>
public static String TestMethod(String str)
{
return str+"aaaaaaaaaaaaaa";
}
//这是ELFunction.tld中对EL函数的说明
<function>
<name>TestMethod</name>
<function-class>com.Huaye.ELFunction.ELFunction</function-class>
<function-signature>String TestMethod(String)</function-signature>
</function>//这是Web.xml中对EL的配置<jsp-config> <taglib>
<taglib-uri>/intercept</taglib-uri>
<taglib-location>/WEB-INF/tlds/ELFunction.tld</taglib-location>
</taglib> </jsp-config>
//最后是JSP中的代码了<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib prefix="inter" uri="/intercept" %><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>My JSP 'MyJsp.jsp' starting page</title>
</head>
<body>
${inter:TestMethod("a") }
</body>
</html>
HTTP Status 500 - --------------------------------------------------------------------------------type Exception reportmessage description The server encountered an internal error () that prevented it from fulfilling this request.exception org.apache.jasper.JasperException: The class String specified in the method signature in TLD for the function inter:TestMethod cannot be found. String
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:564)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:353)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:319)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
root cause org.apache.jasper.JasperException: The class String specified in the method signature in TLD for the function inter:TestMethod cannot be found. String
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:50)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:179)
org.apache.jasper.compiler.Validator$ValidateVisitor$1MapperELVisitor.visit(Validator.java:1440)
org.apache.jasper.compiler.ELNode$Function.accept(ELNode.java:122)
org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:193)
org.apache.jasper.compiler.ELNode$Visitor.visit(ELNode.java:234)
org.apache.jasper.compiler.ELNode$Root.accept(ELNode.java:53)
org.apache.jasper.compiler.ELNode$Nodes.visit(ELNode.java:193)
org.apache.jasper.compiler.Validator$ValidateVisitor.getFunctionMapper(Validator.java:1453)
org.apache.jasper.compiler.Validator$ValidateVisitor.prepareExpression(Validator.java:1321)
org.apache.jasper.compiler.Validator$ValidateVisitor.visit(Validator.java:678)
org.apache.jasper.compiler.Node$ELExpression.accept(Node.java:920)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2321)
org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2371)
org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2377)
org.apache.jasper.compiler.Node$Root.accept(Node.java:482)
org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2321)
org.apache.jasper.compiler.Validator.validate(Validator.java:1549)
org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:177)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:305)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:285)
org.apache.jasper.compiler.Compiler.compile(Compiler.java:272)
org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:565)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:313)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:319)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
note The full stack trace of the root cause is available in the Apache Tomcat/6.0.0 logs.
--------------------------------------------------------------------------------Apache Tomcat/6.0.0
这个是不是有问题啊,绝对路径试试呢
建议用struts标签库 <s:propert value=""/>