web.xml

Question

web.xml部分内容如下：<?xml version="1.0" encoding="UTF-8"?>
<!--声明标签库 j2ee1.4 library /javax.servlet.jar/javax.servlet.resource/web-app_2_3.dtd--><!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>
    <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>3</param-value>
        </init-param>
        <init-param>
            <param-name>detail</param-name>
            <param-value>3</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    
  
     
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
      
 
    <!-- 字符编码设定 -->
  <filter>
   <filter-name>characterFilter</filter-name>
   <filter-class>com.ghost.filter.CharFilter</filter-class>
  </filter>
  <filter-mapping>
   <filter-name>characterFilter</filter-name>
   <url-pattern>/*</url-pattern>
  </filter-mapping>
  第一个  web app 被用红线 标示着，不知道为什么 会有这个 错误？

Answer 1

此回复为自动发出,仅用于显示而已，并无任何其他特殊作用
楼主【thankyou2008】截止到2008-07-06 17:37:05的历史汇总数据(不包括此帖)：
发帖的总数量:11                       发帖的总分数:820                      
结贴的总数量:8                        结贴的总分数:440                      
无满意结贴数:1                        无满意结贴分:40                       
未结的帖子数:3                        未结的总分数:380                      
结贴的百分比:72.73 %               结分的百分比:53.66 %                  
无满意结贴率:12.50 %               无满意结分率:9.09  %                  
楼主加油

Answer 2

没有 </web-app> 结束配对？？

Answer 3

由配对的 完整的如下：<?xml version="1.0" encoding="UTF-8"?>
<!--声明标签库 j2ee1.4 library /javax.servlet.jar/javax.servlet.resource/web-app_2_3.dtd--><!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>
    <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>3</param-value>
        </init-param>
        <init-param>
            <param-name>detail</param-name>
            <param-value>3</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
         
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>
  
    <!-- 字符编码设定 -->
  <filter>
   <filter-name>characterFilter</filter-name>
   <filter-class>com.ghost.filter.CharFilter</filter-class>
  </filter>
  <filter-mapping>
   <filter-name>characterFilter</filter-name>
   <url-pattern>/*</url-pattern>
  </filter-mapping>      <!-- The Usual Welcome File List 配置起始页 -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>CustomerReg.jsp</welcome-file>
    </welcome-file-list>
   
   <!-- The struts taglibs  -->
    <taglib>
       <taglib-uri>struts-html</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-bean</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-logic</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
    </taglib>     <taglib>
        <taglib-uri>struts-nested</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-nested.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-tiles</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-tiles.tld</taglib-location>
    </taglib>
    </web-app>

Answer 4

错误提示：
The content of element type "web-app" must match "(icon?,display-
 name?,description?,distributable?,context-param*,filter*,filter-mapping*,listener*,servlet*,servlet-
 mapping*,session-config?,mime-mapping*,welcome-file-list?,error-page*,taglib*,resource-env-
 ref*,resource-ref*,security-constraint*,login-config?,security-role*,env-entry*,ejb-ref*,ejb-local-
 ref*)".

Answer 5

你把这部分放到  <servlet>  之前，其它顺序不变，试一试  <!-- 字符编码设定 --> 
  <filter> 
  <filter-name>characterFilter </filter-name> 
  <filter-class>com.ghost.filter.CharFilter </filter-class> 
  </filter> 
  <filter-mapping> 
  <filter-name>characterFilter </filter-name> 
  <url-pattern>/* </url-pattern> 
  </filter-mapping> 

Answer 6

<?xml version="1.0" encoding="UTF-8"?>
<!--声明标签库 j2ee1.4 library /javax.servlet.jar/javax.servlet.resource/web-app_2_3.dtd--><!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>
    <!-- 字符编码设定 -->
    <filter>
        <filter-name>characterFilter</filter-name>
        <filter-class>com.ghost.filter.CharFilter </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>characterFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>    <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>3</param-value>
        </init-param>
        <init-param>
            <param-name>detail</param-name>
            <param-value>3</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>    <!-- The Usual Welcome File List 配置起始页 -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>CustomerReg.jsp</welcome-file>
    </welcome-file-list>    <!-- The struts taglibs  -->
    <taglib>
      <taglib-uri>struts-html</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-bean</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-logic</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-nested</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-nested.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-tiles</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-tiles.tld</taglib-location>
    </taglib>
</web-app>

Answer 7

另外那堆 <taglib> 标签完全可以去掉，然后在 JSP 页中直接
<%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-nested" prefix="nested" %>之后 web.xml 文件可以简化不少，如下
<?xml version="1.0" encoding="UTF-8"?>
<!--声明标签库 j2ee1.4 library /javax.servlet.jar/javax.servlet.resource/web-app_2_3.dtd--><!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>
    <!-- 字符编码设定 -->
    <filter>
        <filter-name>characterFilter</filter-name>
        <filter-class>com.ghost.filter.CharFilter </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>characterFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>    <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>3</param-value>
        </init-param>
        <init-param>
            <param-name>detail</param-name>
            <param-value>3</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>    <!-- The Usual Welcome File List 配置起始页 -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>CustomerReg.jsp</welcome-file>
    </welcome-file-list>
</web-app>

Answer 8

没太研究过 不过
一般不都是这样格式的吗?
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
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">
<display-name>WebTest</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>
</web-app>

Answer 9

老师，不是一般 都是 要把标签放在 tld中 并且在 在 web.xml中声明标签的么？
      

Answer 10

9 楼 说的很对，<taglib>是完全可以不要的

Answer 11

<!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 id="WebApp_ID" version="2.4"
    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">请注意这两处，一个是 web-app_2_3.dtd 一个是 web-app_2_4.xsd，这两个文件都是定义 XML 文档编写规则的文件，其中记录了 web.xml 中标签及标签属性的详细使用规则和标签的嵌套规则。dtd 对标签书写的顺序要求较高，xsd 编写的规则更灵活精细，灵活在对标签出现的顺序不做要求。其中 web.xml（即部署描述符文件）2.3 版本用 dtd 方式描述，新版本 2.4 使用更灵活的 xsd 描述。建议使用后者。

Answer 12

下面是一个采用 2.4 新版本格式较完整的部署描述符文件的例子<?xml version="1.0" encoding="UTF-8"?>
<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”>
<display-name>A Simple Application</display-name> <context-param>
<param-name>Webmaster</param-name>
<param-value>[email protected]</param-value>
</context-param> <servlet>
<servlet-name>catalog</servlet-name>
<servlet-class>com.mycorp.CatalogServlet</servlet-class>
<init-param>
<param-name>catalog</param-name>
<param-value>Spring</param-value>
</init-param>
</servlet> <servlet-mapping>
<servlet-name>catalog</servlet-name>
<url-pattern>/catalog/*</url-pattern>
</servlet-mapping> <session-config>
<session-timeout>30</session-timeout>
</session-config> <mime-mapping>
<extension>pdf</extension>
<mime-type>application/pdf</mime-type>
</mime-mapping> <welcome-file-list>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
</welcome-file-list> <error-page>
<error-code>404</error-code>
<location>/404.html</location>
</error-page>
</web-app>

Answer 13

把 filter放在 前面之后，发现 起始页的设置 不管用了？怎么回事？

Answer 14

<!-- The Usual Welcome File List 配置起始页 -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>CustomerReg.jsp</welcome-file>
    </welcome-file-list>
路径 就在webcontent根目录下面。

Answer 15

再试<?xml version="1.0" encoding="UTF-8"?>
<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”>
    <!-- 字符编码设定 -->
    <filter>
        <filter-name>characterFilter</filter-name>
        <filter-class>com.ghost.filter.CharFilter </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>characterFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>    <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>3</param-value>
        </init-param>
        <init-param>
            <param-name>detail</param-name>
            <param-value>3</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>    <!-- The Usual Welcome File List 配置起始页 -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>CustomerReg.jsp</welcome-file>
    </welcome-file-list>    <!-- The struts taglibs  -->
    <taglib>
      <taglib-uri>struts-html</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-bean</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-logic</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-nested</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-nested.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-tiles</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-tiles.tld</taglib-location>
    </taglib>
</web-app>

Answer 16

不懂，我一般用Eclpse自动生成的web.xml 然后稍加修饰。 你还是重新生成一个没有红色的，然后一点一点移植你的代码吧！估计和web.xml里的版本有关系。

Answer 17

<!--声明标签库 j2ee1.4 library /javax.servlet.jar/javax.servlet.resource/web-app_2_3.dtd--> 
我直接把你的代码做成web.xml文件后，在IE中显示上面的那行有问题，去掉了之后就没问题了。

Answer 18

<?xml version="1.0" encoding="UTF-8"?>
<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”>
    <!-- 字符编码设定 -->
    <filter>
        <filter-name>characterFilter</filter-name>
        <filter-class>com.ghost.filter.CharFilter </filter-class>
    </filter>
    <filter-mapping>
        <filter-name>characterFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>    <servlet>
        <servlet-name>action</servlet-name>
        <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
        <init-param>
            <param-name>config</param-name>
            <param-value>/WEB-INF/struts-config.xml</param-value>
        </init-param>
        <init-param>
            <param-name>debug</param-name>
            <param-value>3</param-value>
        </init-param>
        <init-param>
            <param-name>detail</param-name>
            <param-value>3</param-value>
        </init-param>
        <load-on-startup>0</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>action</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>    <!-- The Usual Welcome File List 配置起始页 -->
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>CustomerReg.jsp</welcome-file>
    </welcome-file-list>    <!-- The struts taglibs  -->
    <taglib>
      <taglib-uri>struts-html</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-html.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-bean</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-bean.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-logic</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-logic.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-nested</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-nested.tld</taglib-location>
    </taglib>
    <taglib>
        <taglib-uri>struts-tiles</taglib-uri>
        <taglib-location>/WEB-INF/tld/struts-tiles.tld</taglib-location>
    </taglib>
</web-app>
还是 有错误红色提示 ，另外我 环境 是 tomcat5.5

Answer 19

是的你元素的顺序不对吧。
filter放在mapping后面

Answer 20

    <servlet>
        <servlet-name>action </servlet-name> 
        <servlet-class>org.apache.struts.action.ActionServlet </servlet-class> 
        <init-param> 
            <param-name>config </param-name> 
            <param-value>/WEB-INF/struts-config.xml </param-value> 
        </init-param> 
        <init-param> 
            <param-name>debug </param-name> 
            <param-value>3 </param-value> 
        </init-param> 
        <init-param> 
            <param-name>detail </param-name> 
            <param-value>3 </param-value> 
        </init-param> 
        <load-on-startup>0 </load-on-startup> 
    </servlet> 
    <filter> 
        <filter-name>characterFilter </filter-name> 
        <filter-class>com.ghost.filter.CharFilter </filter-class> 
    </filter>     <filter-mapping> 
        <filter-name>characterFilter </filter-name> 
        <url-pattern>/* </url-pattern> 
    </filter-mapping>     <servlet-mapping> 
        <servlet-name>action </servlet-name> 
        <url-pattern>*.do </url-pattern> 
    </servlet-mapping>