struts启动错误
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[论坛活动] Bambook程序达人大赛，打造个性电子书，赢取60万大奖[意见反馈][官方博客]?? 完全解决struts启动时报错：The content of element type "struts-config" must match "(data-sources?,form-beans?,global-exceptions?,global-forwards?,action-mappings?,controller?,message-resources* 收藏
最近新建一个项目，发现tomcat启动的时候时，控制台一直报告异常信息：
10 12 22 09:49:016,306? ERROR Digester:1463 - Parse Error at line 21 column 17: The content of element type "struts-config" must match "(data-sources?,form-beans?,global-exceptions?,global-forwards?,action-mappings?,controller?,message-resources*,plug-in*)".
org.xml.sax.SAXParseException: The content of element type "struts-config" must match "(data-sources?,form-beans?,global-exceptions?,global-forwards?,action-mappings?,controller?,message-resources*,plug-in*)".
。。。。。。
虽然这不影响系统的运行，但看到每次启动就报这一堆异常信息，心里也很不爽。
在网上搜索了下解决办法，但是大部分都是只有提问，没有结果，或者就是解决办法不管用。于是，下决心自己去解决。认真查看异常信息，发现如下重要信息：
at org.apache.struts.action.ActionServlet.parseModuleConfigFile(ActionServlet.java:738)
?at org.apache.struts.action.ActionServlet.initModuleConfig(ActionServlet.java:687)
于是，找到对应源代码：ActionServlet中的方法initConfigDigester()
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01.if (configDigester != null) {??
02.??????????? return (configDigester);??
03.??????? }??
04.?
05.??????? // Create a new Digester instance with standard capabilities??
06.??????? configDigester = new Digester();??
07.??????? configDigester.setNamespaceAware(true);??
08.??????? configDigester.setValidating(this.isValidating());//注意此处！！！??
09.??????? configDigester.setUseContextClassLoader(true);??
10.??????? configDigester.addRuleSet(new ConfigRuleSet());??
11.?
12.??????? for (int i = 0; i < registrations.length; i += 2) {??
13.??????????? URL url = this.getClass().getResource(registrations[i + 1]);??
14.?
15.??????????? if (url != null) {??
16.??????????????? configDigester.register(registrations[i], url.toString());??
17.??????????? }??
18.??????? }??
19.?
20.??????? this.addRuleSets();?
if (configDigester != null) {
??????????? return (configDigester);
??????? }
??????? // Create a new Digester instance with standard capabilities
??????? configDigester = new Digester();
??????? configDigester.setNamespaceAware(true);
??????? configDigester.setValidating(this.isValidating());//注意此处！！！
??????? configDigester.setUseContextClassLoader(true);
??????? configDigester.addRuleSet(new ConfigRuleSet());
??????? for (int i = 0; i < registrations.length; i += 2) {
??????????? URL url = this.getClass().getResource(registrations[i + 1]);
??????????? if (url != null) {
??????????????? configDigester.register(registrations[i], url.toString());
??????????? }
??????? }
??????? this.addRuleSets();
注意标注【注意的代码行】，其调用的代码如下：
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01.private boolean isValidating() {??
02.?????? boolean validating = true;??
03.?????? String value = getServletConfig().getInitParameter("validating");??
04.?
05.?????? if ("false".equalsIgnoreCase(value) || "no".equalsIgnoreCase(value)??
06.?????????? || "n".equalsIgnoreCase(value) || "0".equalsIgnoreCase(value)) {??
07.?????????? validating = false;??
08.?????? }??
09.?
10.?????? return validating;??
11.?? }?
?private boolean isValidating() {
??????? boolean validating = true;
??????? String value = getServletConfig().getInitParameter("validating");
??????? if ("false".equalsIgnoreCase(value) || "no".equalsIgnoreCase(value)
??????????? || "n".equalsIgnoreCase(value) || "0".equalsIgnoreCase(value)) {
??????????? validating = false;
??????? }
??????? return validating;
??? }
分析到此处，大家相信都知道怎么回事了。赶紧前往web.xml配置org.apache.struts.action.ActionServlet的地方加上
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01.<init-param>??
02.??????????? <param-name>validating</param-name>??
03.??????????? <param-value>false</param-value>??
04.??????? </init-param>?
<init-param>
???<param-name>validating</param-name>
???<param-value>false</param-value>
??</init-param>?
启动服务器，果然搞定！
