JSP Tutorial

<c:catch> Tag

JSP 标准标签库 JSP Standard Tag Library

The <c:catch> tag is mainly used to handle exceptions that generate errors and store the error information.

Syntax Format

<c:catch var="<string>">
...
</c:catch>

Attributes

The <c:catch> tag has the following attributes:

Attribute	Description	Required	Default Value
var	Variable used to store error information	no	None

Example Demonstration

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<html>
<head>
<title>c:catch 标签实例</title>
</head>
<body>

<c:catch var ="catchException">
   <% int x = 5/0;%>
</c:catch>

<c:if test = "${catchException != null}">
   <p>异常为 : ${catchException} <br />
   发生了异常: ${catchException.message}</p>
</c:if>

</body>
</html>

The result of running the above example:

异常为 : java.lang.ArithmeticException: / by zero 
发生了异常: / by zero

JSP 标准标签库 JSP Standard Tag Library

Other Extensions