有关webwork输入校验的问题
最近看到了webwork输入校验,相关代码如下：
LoginAction.java代码
- import?com.opensymphony.xwork.ActionSupport; ??
- ...... ??
- public?class?LoginAction?extends?ActionSupport?implements?Action,?ModelDriven?{ ??
- ????private?final?static?String?LOGIN_FAIL="loginfail"; ??
- ????LoginInfo?loginInfo?=?new?LoginInfo(); ??
- ??? ??
- ????public?String?execute()?throws?Exception?{ ??
- ???????if?("erica".equalsIgnoreCase(loginInfo.getUsername())??&&?"mypass".equals(loginInfo.getPassword()))?{ ??
- ???????????return?SUCCESS; ??
- ???????}?else?{ ??
- ???????????System.out.println("======================================================="); ??
- ???????????return?LOGIN_FAIL; ??
- ???????}???????? ??
- ???} ??
- ???public?Object?getModel()?{ ??
- ???????return?loginInfo; ??
- ???} ??
- }??
LoginAction-validation.xml和LoginAction.java在同一个目录下
LoginAction-validation.xml代码
- ＜!DOCTYPE?validators?PUBLIC?"-//OpenSymphony?Group//XWorkValidator?1.0.2//EN" ??
- "http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd"＞ ??
- ＜validators＞ ??
- ?＜field?name="model.username"＞ ??
- ??＜field-validator?type="requiredstring"＞ ??
- ???＜message＞Please?enter?Username!＜/message＞ ??
- ??＜/field-validator＞ ??
- ?＜/field＞ ??
- ??
- ?＜field?name="model.password"＞ ??
- ??＜field-validator?type="stringlength"＞ ??
- ???＜param?name="minLength"＞4＜/param＞ ??
- ???＜param?name="maxLength"＞6＜/param＞ ??
- ???＜message＞Password?length?must?between?${minLength}?and?${maxLength}?chars!＜/message＞ ??
- ??＜/field-validator＞ ??
- ?＜/field＞ ??
- ＜/validators＞ ??
xwork.xml代码
- ＜!DOCTYPE?xwork?PUBLIC?"-//OpenSymphony?Group//XWork?1.0//EN" ??
- "http://www.opensymphony.com/xwork/xwork-1.0.dtd"＞ ??
- ＜xwork＞ ??
- ?＜include?file="webwork-default.xml"?/＞ ??
- ?＜package?name="default"?extends="webwork-default"＞ ??
- ? ??
- ??＜interceptors＞ ??
- ???＜interceptor-stack?name="modelParamsStack"＞ ??
- ????＜interceptor-ref?name="params"?/＞ ??
- ????＜interceptor-ref?name="model-driven"?/＞ ??
- ???＜/interceptor-stack＞ ??
- ??＜/interceptors＞ ??
- ?? ??
- ??＜action?name="login"?class="net.xiaxin.webwork.action.LoginAction"＞ ??
- ???＜result?name="success"?type="dispatcher"＞ ??
- ????＜param?name="location"＞/main.jsp＜/param＞ ??
- ???＜/result＞ ??
- ???＜result?name="loginfail"?type="dispatcher"＞ ??
- ????＜param?name="location"＞/validatorindex.jsp＜/param＞ ??
- ???＜/result＞ ??
- ???＜interceptor-ref?name="modelParamsStack"/＞? ??
- ???＜interceptor-ref?name="validationWorkflowStack"?/＞ ??
- ??＜/action＞ ??
- ?＜/package＞ ??
- ＜/xwork＞ ??
validators.xml和xwork.xml都放在classes根目录下
validators.xml代码
- ＜validators＞? ??
- ????＜validator?name="requiredstring"?class="com.opensymphony.xwork.validator.validators.RequiredStringValidator"/＞ ??
- ??
- ????＜validator?name="stringlength"?class="com.opensymphony.xwork.validator.validators.StringLengthFieldValidator"/＞ ??
- ???? ??
- ＜/validators＞ ??
validatorindex.jsp代码
- ＜%@?taglib?prefix="ww"?uri="/webwork"%＞ ??
- ?＜style?type="text/css"＞ ??
- ??.errorMessage?{ ??
- ???color:?red; ??
- ??} ??
- ?＜/style＞? ??
- ??＜form?action="login.action"＞ ??
- ????登录＜br＞ ??
- ???＜ww:if?test="hasFieldErrors()"＞ ??
- ????＜span?class="errorMessage"＞ ??
- ?????＜b＞Errors:＜/b＞＜br＞ ??
- ?????＜ww:iterator?value="fieldErrors"＞ ??
- ??????＜li＞＜ww:property?value="value[0]"/＞＜/li＞ ??
- ?????＜/ww:iterator＞ ??
- ????＜/span＞ ??
- ???＜/ww:if＞ ??
- ??用户名: ??
- ??左尖括号??input?type="text"?name="model.username"?/＞ ??
- ??
- ??密?码?: ??
- ??左尖括号?input?type="password"?name="model.password"?/＞ ??
- ??
- ???左尖括号?input?type="submit"?value="提交"?name="B1"/＞ ??
- ???左尖括号?input?type="reset"?value="重置"?name="B2"/＞ ??
- ?＜／form＞??
运行时，若输入正确的用户名和密码，按提交按钮后可以转向正确的页面。若输入错误的用户名或密码，按提交按钮则页面空白一片。在myeclipse下看到如下信息：
DefaultWorkflowInterceptor - Invoking validate() on action net.xiaxin.webwork.action.LoginAction@a47cc3
PrefixMethodInvocationUtil - cannot find method [validateExecute] in action [net.xiaxin.webwork.action.LoginAction@a47cc3]
PrefixMethodInvocationUtil - cannot find method [validateDoExecute] in action [net.xiaxin.webwork.action.LoginAction@a47cc3]
DefaultWorkflowInterceptor - Errors on action net.xiaxin.webwork.action.LoginAction@a47cc3, returning result name 'input'
DefaultActionInvocation - No result defined for action net.xiaxin.webwork.action.LoginAction and result input
这是什么原因呢？