数据校验（struts2）

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首先login.jsp

<form action="LA" method="post">
用户名:<input type="text" name="username"><s:fielderror name="username"></s:fielderror>(验证)
密码:<input type="password" name="password">
book1:<input type="text" name="bookList[0]">
book2:<input type="text" name="bookList[1]">
age:<input type="text" name="age">
<input type="submit" value="提交">
</form>

到达action

<action name="LA" method="login" class="com.imooc.action.LoginAction">
<result>/success.jsp</result>
<result name="input">/login.jsp</result>
</action>

进行验证

package com.imooc.action;

import com.imooc.po.User;
import com.opensymphony.xwork2.ActionSupport;
import com.opensymphony.xwork2.ModelDriven;

public class LoginAction extends ActionSupport implements ModelDriven<User> {
private User user = new User();

public User getUser() {
return user;
}

public void setUser(User user) {
this.user = user;
}

public String login() {
System.out
.println("322424234242424242424242422424242424242424242424224242424242424242423242");
System.out.println(user.getUsername());
return SUCCESS;
}

public User getModel() {
// TODO Auto-generated method stub
return user;
}

《验证》

@Override
public void validate() {
if (user.getUsername() == null || "".equals(user.getUsername())) {
this.addFieldError("username", "用户名不能为空");
}

}
}

数据校验（struts2）

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原文地址：http://www.cnblogs.com/5scxy/p/5837907.html