JSP异常--According to TLD or attribute directive in tag file
2009-09-21 22:31
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[align=left]部署运行的时候出现JSP异常, 发生在使用JSTL库的时候: According to TLD or attribute directive in tag file, attribute value does not accept any expressions, 可能是因为使用了JSP2.0版本, 同时又没有使用JSTL core库的备用版本(RT库), 以下有两种处理方法: [/align]
[align=left]1. 如果不想使用web-app_2_4.xsd 和jstl1.1 那么可以按照下面两种方式修改[/align]
[align=left]1). 修改web.xml.[/align]
[align=left]<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">[/align]
[align=left]改为2.3版本的[/align]
[align=left]<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>[/align]
[align=left]2). 使用JSTL core RT库[/align]
[align=left]JSTL core库的有两种taglib伪指令, 其中RT库即是依赖于JSP传统的请求时属性值, 而不是依赖于EL来实现(称为EL库.JSP2.0将支持EL)[/align]
[align=left]JSP中使用<%@ taglib uri=http://java.sun.com/jstl/core prefix="c"%>在2.3版本都可以,在2.4就不行了, 这是版本不兼容引起的,稍后将介绍servlet的版本。[/align]
[align=left]只要将[/align]
[align=left]<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>[/align]
[align=left]改为[/align]
[align=left]<%@ taglib uri=http://java.sun.com/jstl/core_rt prefix="c"%>[/align]
[align=left]1. 如果不想使用web-app_2_4.xsd 和jstl1.1 那么可以按照下面两种方式修改[/align]
[align=left]1). 修改web.xml.[/align]
[align=left]<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" version="2.4">[/align]
[align=left]改为2.3版本的[/align]
[align=left]<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd">
<web-app>[/align]
[align=left]2). 使用JSTL core RT库[/align]
[align=left]JSTL core库的有两种taglib伪指令, 其中RT库即是依赖于JSP传统的请求时属性值, 而不是依赖于EL来实现(称为EL库.JSP2.0将支持EL)[/align]
[align=left]JSP中使用<%@ taglib uri=http://java.sun.com/jstl/core prefix="c"%>在2.3版本都可以,在2.4就不行了, 这是版本不兼容引起的,稍后将介绍servlet的版本。[/align]
[align=left]只要将[/align]
[align=left]<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c"%>[/align]
[align=left]改为[/align]
[align=left]<%@ taglib uri=http://java.sun.com/jstl/core_rt prefix="c"%>[/align]
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