<taglib>标签在web.xml文件中报错解决方法
配置web.xml文件时,taglib标签报错,但不会影响程序的运行,web.xml 如下:
< xml version="1.0" encoding="UTF-8" >
<web-app id="WebApp_ID" version="2.4"
xmlns="" xmlns:xsi=""
xsi:schemaLocation="">
<display-name>testSitemesh</display-name>
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.module.sitemesh.filter.PageFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<taglib>
<taglib-uri>sitemesh-decorator</taglib-uri>
<taglib-location>/WEB-INF/sitemesh-decorator.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>sitemesh-page</taglib-uri>
<taglib-location>/WEB-INF/sitemesh-page.tld</taglib-location>
</taglib>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
其中的taglib标签加入后,eclipse报错,内容如下:
cvc-complex-type.2.4.a: Invalid content was found starting with element ‘taglib‘. One of ‘{"":description, "":display-name, "":icon, "":distributable, "":context-param,
"":filter, "":filter-mapping, "":listener, "":servlet, "":servlet-mapping, "":session-config, "":mime-mapping, "":welcome-file-list, "":error-page, "":jsp-config, "":security-constraint, "":login-config, "":security-role, "":env-entry, "":ejb-ref, "":ejb-local-ref,
"":service-ref, "":resource-ref, "":resource-env-ref, "":message-destination-ref, "":message-destination, "":locale-encoding-mapping-list}‘ is expected.
解决方法有两个:
1、把<web-app id="WebApp_ID" version="2.4"
xmlns="" xmlns:xsi=""
xsi:schemaLocation="">
这句改成<web-app >
解 释:在jsp2.0中,且2.4版的DTD验证中,初步估计是由于eclipse在部署时,未对web.xml进行一些校验,而jbuilder则进行了 校验,并除非不合法的描述符,而taglib描述符,正确写法是放到<jsp-config$amp;>amp;$lt;/jsp-config>描述符 中。
2、在taglib外面加个jsp-config标签:
<jsp-config>
<taglib>
<taglib>
<taglib-uri>sitemesh-decorator</taglib-uri>
<taglib-location>/WEB-INF/sitemesh-decorator.tld</taglib-location>
</taglib>
<taglib>
<taglib-uri>sitemesh-page</taglib-uri>
<taglib-location>/WEB-INF/sitemesh-page.tld</taglib-location>
</taglib>
</jsp-config>
<jsp-config>标签使用详解:
<jsp-config> 包括<taglib> 和<jsp-property-group> 两个子元素。
其中<taglib>元素在JSP 1.2时就已经存在;而<jsp-property-group>是JSP 2.0 新增的元素。
<jsp-property-group>元素主要有八个子元素,它们分别为:
1.<description>:设定的说明;
2.<display-name>:设定名称;
3.<url-pattern>:设定值所影响的范围,如:/CH2 或 /*.jsp;
4.<el-ignored>:若为true,表示不支持EL 语法;
5.<scripting-invalid>:若为true,表示不支持<% scripting %>语法;
6.<page-encoding>:设定JSP 网页的编码;
7.<include-prelude>:设置JSP 网页的抬头,扩展名为.jspf;
8.<include-coda>:设置JSP 网页的结尾,扩展名为.jspf。