Document is invalid: no grammar found. at (null:3:8)

Love The Way You Lie 2022-06-02 04:16 199阅读 0赞

严重: Document is invalid: no grammar found. at (null:3:8)  
org.xml.sax.SAXParseException: Document is invalid: no grammar found.  
 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)  
 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)  
省略....

at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:413)  
2012-8-17 15:37:11 org.apache.catalina.core.StandardContext filterStart  
严重: Exception starting filter struts2  
file:/D:/Tomcat%206.0/webapps/Struts2UserLogin/WEB-INF/classes/struts.xml:3:8  
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:835)  
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadDocuments(XmlConfigurationProvider.java:131)  
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.init(XmlConfigurationProvider.java:100)  
省略...

Caused by: Document is invalid: no grammar found. - file:/D:/Tomcat%206.0/webapps/Struts2UserLogin/WEB-INF/classes/struts.xml:3:8  
 at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:123)  
 at com.opensymphony.xwork2.config.providers.XmlConfigurationProvider.loadConfigurationFiles(XmlConfigurationProvider.java:830)  
 ... 34 more  
Caused by: org.xml.sax.SAXParseException: Document is invalid: no grammar found.  
 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:195)  
 at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:131)

省略...

at com.opensymphony.xwork2.util.DomHelper.parse(DomHelper.java:121)  
 ... 35 more  
2012-8-17 15:37:11 org.apache.catalina.core.StandardContext start  
严重: Error filterStart  
2012-8-17 15:37:11 org.apache.catalina.core.StandardContext start  
严重: Context \[/Struts2UserLogin\] startup failed due to previous errors  
2012-8-17 15:37:11 org.apache.coyote.http11.Http11Protocol start  
信息: Starting Coyote HTTP/1.1 on http-8080  
2012-8-17 15:37:11 org.apache.jk.common.ChannelSocket init  
信息: JK: ajp13 listening on /0.0.0.0:8009  
2012-8-17 15:37:11 org.apache.jk.server.JkMain start  
信息: Jk running ID=0 time=0/30  config=null  
2012-8-17 15:37:11 org.apache.catalina.startup.Catalina start  
信息: Server startup in 1758 ms

**struts.xml配置文件内容如下：**

<?xml version="1.0" encoding="UTF-8"?>

<struts>  
    
  <include file="struts-default.xml" />  
    
  <package name="default" extends="struts-default" >  
      
    <action name="hello" class="controller.HelloAction" >  
        
      <result name="success">success.html</result>  
    </action>  
  </package>  
</struts>

**因为在struts.xml文件中缺少了DOCTYPT定义，在文件中加入**：  
<!DOCTYPE struts PUBLIC  
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"  
    "[http://struts.apache.org/dtds/struts-2.0.dtd][http_struts.apache.org_dtds_struts-2.0.dtd]">

即可，正确的配置文件如下：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts PUBLIC  
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"  
    "[http://struts.apache.org/dtds/struts-2.0.dtd][http_struts.apache.org_dtds_struts-2.0.dtd]">  
      
<struts>  
    
  <include file="struts-default.xml" />  
    
  <package name="default" extends="struts-default" >  
      
    <action name="hello" class="controller.HelloAction" >  
        
      <result name="success">success.html</result>  
    </action>  
  </package>  
</struts>

[http_struts.apache.org_dtds_struts-2.0.dtd]: http://struts.apache.org/dtds/struts-2.0.dtd