上一篇
下一篇
SSH使用Validator框架对DispatchAction不同方法使用不同的字段验证
作者:Java伴侣 日期:2009-01-20
reference: http://blog.csdn.net/qjyong/archive/2008/11/16/3311688.aspx
能解决这个问题还真是要感谢 http://blog.csdn.net/qjyong/archive/2008/11/16/3311688.aspx这篇文章的作者qjyong。参照他的方法我在SSH中完成了不同方法验证需求不同的操作。
1. 自定义的FileChecks类。这里对qjyong的FileChecks稍微做了一下改动。应该使用SSH框架以后，使用的Action都写成org.springframework.web.struts.DelegatingActionProxy。所以在这种情况下Class.forName(className).newInstance() instanceof DispatchAction永远都为false.下面只把改动的代码注释出来，其它的都参考qjyong的。
/**
* 方法说明: 判断in是否出现在source中
*
* @param source
* @param in
* @return
*/
private static boolean isIn(String source, String in) {
if("".equals(in) || in == null)
{
return true;
}
source = SEPARATOR + source + SEPARATOR;
if (source.indexOf(SEPARATOR + in + SEPARATOR) != -1) {
return true;
} else {
return false;
}
}
/**
* 判断需要验证
*
* @param field
* @param request
* @return
*/
private static boolean isNeedValidate(Field field,
HttpServletRequest request) {
boolean flag = true;
// 查找到当前请求对应的actionMapping
ActionMapping mapping = (ActionMapping) request
.getAttribute(Globals.MAPPING_KEY);
// 得到处理该请求的Action类名
String className = mapping.getType();
String input = request.getHeader("Referer");
if (input != null) {
// mapping.setInput(input);
}
try {
// 这里不要判断是否为 DispatchAction的实例
// if (Class.forName(className).newInstance() instanceof DispatchAction) {
// 得到<action>标记的parameter属性的值
String parameter = mapping.getParameter();
//如果没有设置parameter也就是没有使用DispatchAction的类则，parameter为空
if("".equals(parameter) || parameter == null)
{
return true;
}
else
{
// 得到当前要执行方法名
String currentMethodName = request.getParameter(parameter);
// 获取配置文件中需要验证的方法名列表串
String methods = field.getVarValue("methodsNeedValidation");
// 如果没有配置需要验证的方法或不在需要验证的方法列表中，则把flag改为false
if (!isIn(methods, currentMethodName)) {
flag = false;
} }
// }
} catch (Exception e) {
e.printStackTrace();
}
return flag;
}
//其它的几个设置都一样，不全部粘贴出来了。可以看qjyong的文章。
public static boolean validateRequired(Object bean, ValidatorAction va,
Field field, ActionMessages errors, Validator validator,
HttpServletRequest request) {
if (isNeedValidate(field, request)) {
return FieldChecks.validateRequired(bean, va, field, errors,
validator, request);
} else {
return true;
}
}
。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。。
2、修改validate-rules.xml，使用自定义的字段验证类：注意这里的validate-rules.xml中他没有重写validateWhen,因此，validateWhen还是使用org.apache.struts.validator.validwhen.ValidWhen这个方法
<validator name="required"
classname="org.diamond.validator.MyFieldChecks"
method="validateRequired"
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.required"/>
<validator name="validwhen"
msg="errors.required"
classname="org.apache.struts.validator.validwhen.ValidWhen"
method="validateValidWhen"
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"/>
。。。。。。。。。。。。。。。。。。。。。。。。
3、配置具体的验证规则validation.xml。暂时只需要对需要继承DispatchAction的类并且该类中某些方法满足需要验证某些方法不需要验证。就可以在这个文件里进行设置。这里只有loginOn需要验证methodsNeedValidation需要跟前面MyFieldChecks.java设置的一致。
<form-validation>
<global>
</global>
<formset>
<form name="customerLoginForm">
<field property="email" depends="required">
<arg0 key="customerLoginForm.email"/>
<var>
<var-name>methodsNeedValidation</var-name>
<var-value>loginOn</var-value>
</var>
</field>
<field property="password" depends="required">
<arg0 key="customerLoginForm.customerPassword"/>
<var>
<var-name>methodsNeedValidation</var-name>
<var-value>loginOn</var-value>
</var>
</field>
</form>
</formset>
/form-validation>
4、struts-config.xml文件
<action
attribute="customerLoginForm"
input="/form/customerLogin.jsp"
name="customerLoginForm"
path="/customerLogin"
scope="request"
validate="true"
parameter="method"
type="org.springframework.web.struts.DelegatingActionProxy">
<forward name="loginSuccess" path="/form/index.jsp" />
<forward name="loginFailed" path="/form/customerLogin.jsp"></forward>
</action>
5、CustomerLoginAction。主要要注意的也就是方法名必须和jsp中定义的一致。
public class CustomerLoginAction extends DispatchAction
{
public ActionForward loginOn(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
{
DynaActionForm customerLoginForm = (DynaActionForm) form;
if(isCancelled(request))
{
return mapping.findForward(MessageUtil.LoginSuccess);
}
String email = customerLoginForm.getString(MessageUtil.Email);
String tuserpassword = customerLoginForm.getString(MessageUtil.Password);
Testuser testUser;
try
{
Boolean isExist = testUserService.isExist(email, tuserpassword);
List list = testUserService.findByProperty(MessageUtil.Email, email);
if(isExist && list.size()==1)
{
testUser = (Testuser)list.get(0);
request.getSession().setAttribute(MessageUtil.Email, email);
request.getSession().setAttribute(MessageUtil.NickName, testUser.getNickname());
return mapping.findForward(MessageUtil.LoginSuccess);
}
else
{
errorMessageShow(request,"errors.accessIllegal",MessageUtil.AccessIllegal);
return mapping.findForward(MessageUtil.LoginFailed);
}
}
catch(Exception e)
{
errorMessageShow(request,"errors.accessIllegal",MessageUtil.AccessIllegal);
return mapping.findForward(MessageUtil.LoginFailed);
}
}
public ActionForward getSQuestionList(ActionMapping mapping, ActionForm form,
HttpServletRequest request, HttpServletResponse response)
{
DynaActionForm customerLoginForm = (DynaActionForm) form;
return mapping.findForward(MessageUtil.LoginFailed);
}
private void errorMessageShow(HttpServletRequest request,String errorMessage,String property)
{
ActionMessages errors = new ActionMessages();
ActionMessage error = new ActionMessage(errorMessage);
errors.add(property,error);
this.saveErrors(request, errors);
}
public TestUserService getTestUserService()
{
return testUserService;
}
public void setTestUserService(TestUserService testUserService)
{
this.testUserService = testUserService;
}
}
6、customerLogin.jsp.
<%@ page language="java" pageEncoding="utf-8"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-bean" prefix="bean"%>
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html" prefix="html"%>
<%@ page import="java.util.Locale" %>
<%@ page import="org.apache.struts.Globals" %>
<html:html locale="true">
<html>
<head>
<title><bean:message key="customerLoginForm.title"/></title>
</head>
<body>
<TABLE border="0" cellpadding="0" cellspacing="0" width="100%">
<html:form action="/customerLogin?method=loginOn" >
<tr>
<table border="0" cellpadding="0" cellspacing="0">
<tr>
<FONT color="red"><html:errors property="accessIllegal"/></FONT>
</tr>
<tr>
<td><bean:message key="customerLoginForm.email"/></td>
<td><html:text property="email"/></td>
<td><html:errors property="email"/></td>
</tr>
<tr>
<td><bean:message key="customerLoginForm.customerPassword"/></td>
<td><html:password property="password"/></td>
<td><html:errors property="password"/></td>
</tr>
<tr>
<td><html:submit><bean:message key="customerLoginForm.button.submit"/></html:submit></td>
<td><html:cancel><bean:message key="customerLoginForm.button.cancel"/></html:cancel></td>
</tr>
<tr>
<td><html:link action="/customerLogin.do?method=getSQuestionList"><bean:message key="newCustomerRegister.register"/></html:link></td>
</tr>
</TABLE>
</tr>
</html:form>
</TABLE>
</body>
</html>
</html:html>
8、其它的配置文档信息比如application-context.xml，资源文件ApplicationResources.properties都不细说了。
文章来自: 
引用通告: 
Tags: 
相关日志:
