[Tapestry5] Tapestry5自定义登陆组件时，登陆错误时的提示怎么显示在返回的登陆页面上
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bianweiall
2012-09-09
想把登陆模块做成一个组件，做登陆页面时使用这个组件就可以了，当我点击登陆按钮后返回到登陆页面并且会有“用户名或密码错误！”的提醒，现在这个message传不过去值，不知道哪里错了！
组件类Login.java
package com.bw.components;
import javax.persistence.Query;
import org.apache.tapestry5.annotations.Component;
import org.apache.tapestry5.annotations.Property;
import org.apache.tapestry5.annotations.SessionState;
import org.apache.tapestry5.corelib.components.Errors;
import org.apache.tapestry5.corelib.components.Form;
import org.apache.tapestry5.corelib.components.TextField;
import org.apache.tapestry5.ioc.annotations.Inject;
import com.bw.entities.TUser;
import com.bw.pages.Index;
import com.bw.services.dao.jpa.AppJpaDAO;
public class Login {
@Property
private TUser user;
@Property
private String message;
@SuppressWarnings("unused")
@SessionState
private String userNameSSO;
@Inject
private AppJpaDAO dao;
@SuppressWarnings("unused")
@Component
private Form form;
@SuppressWarnings("unused")
@Component
private Errors errors;
@SuppressWarnings("unused")
@Component(parameters = { "value=user.name", "validate=required" })
private TextField userName;
@SuppressWarnings("unused")
@Component(parameters = { "value=user.password", "validate=required" })
private TextField userPassword;
void onPrepare() {
user = new TUser();
}
String onPassivate() {
return message;
}
void onActivate(String message) {
this.message = message;
}
Object onSuccess() {
String inName = user.getName();
String inPassword = user.getPassword();
String jpql = "select o from _user o where o.name=:param";
Query query = dao.findQuery(jpql);
query.setParameter("param", inName);
int rSize = query.getResultList().size();
if (rSize != 0) {
user = (TUser) query.getResultList().get(0);
if (rSize == 1 && user.getPassword().equals(inPassword)) {
userNameSSO = user.getName();
return Index.class;
} else {
message = "用户名或秘密错误1！";
System.out.println(message);
return com.bw.pages.user.Login.class;
}
} else {
message = "用户名或秘密错误2！";
System.out.println(message);
return com.bw.pages.user.Login.class;
}
}
}
组件模版：Login.tml
<html xmlns="http://www.w3.org/1999/xhtml" xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd"
xmlns:p="tapestry:parameter">
<p>${message}</p>
<form t:id="form">
<p t:id="errors" />
<p>
用户名：
<input type="text" t:id="userName" />
</p>
<p>
密码：
<input type="password" t:id="userPassword" />
</p>
<p>
<input type="submit" value="登陆" />
</p>
</form>
</html>
所用的页面类：Login.java
package com.bw.pages.user;
public class Login {
}
页面模版：Login.tml <html t:type="layout" title="登陆" xmlns:t="http://tapestry.apache.org/schema/tapestry_5_3.xsd" xmlns:p="tapestry:parameter"> <t:login /> </html> |
