JSP的Eception

一 Exception对象

 

 

二 实例

1、代码1

<%@  page  language = "java"  import = "java.util.*"  contentType = "text/html; charset=utf-8"  errorPage = "exception.jsp" %>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+ "://" +request.getServerName()+ ":" +request.getServerPort()+path+ "/" ;

%>

 

<! DOCTYPE  HTML  PUBLIC  "-//W3C//DTD HTML 4.01 Transitional//EN">

< html >

   < head >

     < base  href = " <%= basePath %> " >

   

     < title > My JSP 'index.jsp' starting page </ title >

         < meta  http-equiv = "pragma"  content = "no-cache" >

         < meta  http-equiv = "cache-control"  content = "no-cache" >

         < meta  http-equiv = "expires"  content = "0" >    

         < meta  http-equiv = "keywords"  content = "keyword1,keyword2,keyword3" >

         < meta  http-equiv = "description"  content = "This is my page" >

         <!--

        <link  rel =" stylesheet " type="text/ css "  href ="styles.css">

        -->

   </ head >

 

   < body >

     < h1 > 测试异常的页面 </ h1 >

     < hr >

   

     <%

      System.out.println(100/0);  //抛出运行时异常，算数异常

     %>

   </ body >

</ html >

2、代码2

<%@  page  language = "java"  import = "java.util.*"  contentType = "text/html; charset=utf-8"  isErrorPage = "true"  %>

<%

String path = request.getContextPath();

String basePath = request.getScheme()+ "://" +request.getServerName()+ ":" +request.getServerPort()+path+ "/" ;

%>

 

<! DOCTYPE  HTML  PUBLIC  "-//W3C//DTD HTML 4.01 Transitional//EN">

< html >

   < head >

     < base  href = " <%= basePath %> " >

   

     < title > My JSP 'index.jsp' starting page </ title >

         < meta  http-equiv = "pragma"  content = "no-cache" >

         < meta  http-equiv = "cache-control"  content = "no-cache" >

         < meta  http-equiv = "expires"  content = "0" >    

         < meta  http-equiv = "keywords"  content = "keyword1,keyword2,keyword3" >

         < meta  http-equiv = "description"  content = "This is my page" >

         <!--

        <link  rel =" stylesheet " type="text/ css "  href ="styles.css">

        -->

   </ head >

 

   < body >

     < h1 > exception内置对象 </ h1 >

     < hr >

   

        异常的消息是： <%= exception.getMessage() %> < BR >

        异常的字符串描述： <%= exception.toString() %> < br >

   </ body >

</ html >

 

三 运行结果