1、formName写的不对。其中form-beans里面的name，action-mapping里面，validation.xml里面的form的name都要保持一直。
2、忘记在validation.xml里面定义了验证内容，这样会出现，找不到要用的验证规则，提示错误。
都是新手容易出的问题。
错误之前的配置：
input.jsp
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <%@ page language="java" contentType="text/html; charset=utf-8" %> <%@ taglib uri="http://struts.apache.org/tags-html" prefix="html" %> <html:html xhtml="true" lang="true"> <head> <title>input.jsp</title> </head> <body> <h1> 欢迎光临wd的提问版</h1><br /> <html:form action="/guestbook.do?method=save" οnsubmit="return validateguestbookForm(this)"> <html:hidden property="method" value="save" /> <table width="572" border="0" bgcolor="#8080c0" align="left" height="144"> <tbody> <tr> <td bgcolor="#c0c0c0"> 问题标题:</td> <td><html:text property="title" ></html:text></td> </tr> <tr> <td borderColor="#ff0080" bgcolor="#008080"> 你的名字: </td> <td><html:text property="name" ></html:text><html:errors property="name" /></td> </tr> <tr> <td>你的主页：</td> <td><html:text property="url" ></html:text></td> </tr> <tr> <td>你的邮件:</td> <td><html:text property="email" ></html:text></td> </tr> <tr> <td borderColor="#1f54e0" bgcolor="#c0c0c0">问题的内容:</td> <td> <html:textarea property="content" ></html:textarea></td> </tr> <tr> <td valign="top"> <html:submit value="提交"> </html:submit> </td><td valign="top"> </td></tr> </tbody> </table> <br /> <html:javascript formName="guestbookForm" /> </html:form> </body> </html:html> validation.xml <?xml version="1.0" encoding="utf-8" ?> <!DOCTYPE form-validation PUBLIC "-//Apache Software Foundation//DTD Commons Validator Rules Configuration 1.1.3//EN" "http://jakarta.apache.org/commons/dtds/validator_1_1_3.dtd"> <form-validation> <global> <validator name="equalsCheck" classname="struts.EqualsChecks" method="equalsChecks" methodParams="java.lang.Object, org.apache.commons.validator.ValidatorAction, org.apache.commons.validator.Field, org.apache.struts.action.ActionMessages, org.apache.commons.validator.Validator, javax.servlet.http.HttpServletRequest" msg="errors.equalsCheck"/> </global> <formset> <form name="inputForm"> <field property="name" depends="required"> <arg1 name="minlength" key="login.username" resource="false" /> </field> <!-- <field property="name" depends="required"> <msg name="required" key="login.username"/> </field> --> </form> </formset> </form-validation> struts-config.xml <?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN" "http://struts.apache.org/dtds/struts-config_1_3.dtd"> <struts-config> <form-beans > <form-bean name="guestbookForm" type="org.apache.struts.validator.DynaValidatorForm"> <form-property name="title" type="java.lang.String" /> <form-property name="content" type="java.lang.String" /> <form-property name="url" type="java.lang.String" /> <form-property name="email" type="java.lang.String" /> <form-property name="name" type="java.lang.String" /> </form-bean> </form-beans> <global-exceptions /> <global-forwards /> <action-mappings > <!-- name="guestbookForm" <form-bean name="guestbookForm" --> <action attribute="guestbookForm" input="/input.jsp" name="guestbookForm" parameter="method" path="/guestbook" scope="request" type="org.springframework.web.struts.DelegatingActionProxy" validate="false"> ！！！！！！！！！！ ！！！！ ！！！！！！！！！！ ！！！！ ！！！！！！！！！ ！！！！！！！！！！ ！！！！！！！！！！ ！！！！！！！！！ <forward name="success" path="/MyJsp.jsp" /> <forward name="fail" path="/jsp/inputfail.jsp" /> </action> </action-mappings> <message-resources parameter="com.wd.web.ApplicationResources" /> <!-- 注册validator 框架 --> <plug-in className="org.apache.struts.validator.ValidatorPlugIn"> <set-property property="pathnames" value="/WEB-INF/validator-rules.xml, /WEB-INF/validation.xml"/> <set-property property="stopOnFirstError" value="false"/> </plug-in> <!-- <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">--> <!-- <set-property property="contextConfigLocation" --> <!-- value="/WEB-INF/action-servlet.xml"/> --> <!-- </plug-in> --> </struts-config> validate-rules.xml 省略。。。 问题正在解决中 ~解决好了 在发正确的配置。。