struts2 validate方法问题
我后台
Java code
package com.fw.action;
import java.sql.SQLException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts2.ServletActionContext;
import com.fw.beans.User;
import com.fw.dao.UserDao;
import com.opensymphony.xwork2.ActionSupport;
public class UserAction extends ActionSupport{
private UserDao userdao;
public UserDao getUserdao() {
return userdao;
}
public void setUserdao(UserDao userdao) {
this.userdao = userdao;
}
private User user;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public void validate() {
if("".equals(user.getUname())){
this.addFieldError("name", "<font color=red>用户名不能为空！</font>");
}
if("".equals(user.getUpass())){
this.addFieldError("upass", "<font color=red>密码不能为空！</font>");
}
super.validate();
}
public String logic(){
/*System.out.println("----------");
User u=new User();
u.setUname("quan");
u.setUpass("lei");
userdao.adduser(u);
*/
/*
User u=userdao.findid(5);
System.out.println(u.getUpass());
*/
User u;
try {
u = userdao.login(user.getUname(), user.getUpass());
} catch (Exception e) {
System.out.println("登录失败!");
return null;
//e.printStackTrace();
}
System.out.println("登录成功！");
System.out.println(user.getUname()+"\n"+user.getUpass());
return null;
}
public String findall(){
System.out.println("--------");
List<User> list=userdao.findall();
for (User user : list) {
System.out.println(user.getUname());
}
HttpServletRequest request=ServletActionContext.getRequest();
request.setAttribute("list", list);
return "list";
}
}
前台
HTML code
<%@page pageEncoding="UTF-8" contentType="text/html; charset=UTF-8" %>
<%@ taglib uri="/struts-tags" prefix="s" %>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"/>
<title></title>
</head>
<body>
<a href="user!logic.action">----</a>
<s:debug></s:debug>
<s:form action="user!logic.action" method="post">
<s:textfield name="user.uname" label="用户名"></s:textfield>
<s:fielderror></s:fielderror>
<s:textfield name="user.upass" label="密码"></s:textfield>
<s:submit value="logic"></s:submit>
</s:form>
<a href="user!findall.action">查询所有</a>
</body>
</html>
我查询所有就出错，因为我后台validate()方法user.getUname()为空，我点击查询所有应该我不需要验证了，但是它必须经过验证方法所有出空值异常，如果把验证方法去掉就不出错，我该怎么做？
------解决方案--------------------
List<User> list=userdao.findall();
先判断list有值吗
在设断点看看
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