1.演示除数异常
struts.xml
2.action.xml
3.exception.jsp
4.error.jsp
struts.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>
<!-- 定义国际化资源文件的基本名称 -->
<package name="/user" extends="struts-default">
<global-results>
<result name="error">/error.jsp</result>
</global-results>
<global-exception-mappings>
<exception-mapping result="error" exception="java.lang.ArithmeticException"></exception-mapping>
</global-exception-mappings>
<action name="exception" class="com.sh.action.ExceptionAction" method="jisuan">
<result name="success">/exception.jsp</result>
</action>
</package>
</struts>
2.action.xml
package com.sh.action;
import com.opensymphony.xwork2.ActionSupport;
public class ExceptionAction extends ActionSupport {
private Integer a;
private Integer b;
private Integer c;
public String jisuan()throws Exception{
c=a/b;
return SUCCESS;
}
public Integer getA() {
return a;
}
//get set
}
3.exception.jsp
<body>
<center>
<s:form action="exception" theme="simple">
<s:textfield name="a" label="" cssStyle="width:60"></s:textfield>
除以
<s:textfield name="b" label="" cssStyle="width:60"></s:textfield>
等于
<s:textfield name="c" label="" cssStyle="width:60"></s:textfield>
<s:submit value="计算"/>
</s:form>
</center>
</body>
4.error.jsp
<body>
除0异常!
</body>
本文介绍了一个使用Struts2框架处理除数为零异常的示例。通过配置struts.xml文件,定义了全局异常映射,并创建了ExceptionAction类来抛出ArithmeticException异常。页面exception.jsp提供了一个简单的表单让用户输入两个整数并进行除法运算。
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