struts2输入验证例子

package com.struts2; import com.opensymphony.xwork2.ActionSupport; import java.util.*; import java.util.regex.*; public class RegistAction extends ActionSupport { private String name; private String pass; private int age; private Date birth; public void setName(String name) { this.name = name; } public void setPass(String pass) { this.pass = pass; } public void setAge(int age) { this.age = age; } public void setBirth(Date birth) { this.birth = birth; } public String getName() { return (this.name); } public String getPass() { return (this.pass); } public int getAge() { return (this.age); } public Date getBirth() { return (this.birth); } @Override public void validate() { System.out.println("进入validate方法进行校验"); if(name != null && !Pattern.matches("\\w{4,25}", name.trim())) { addFieldError("user" , "您输入用户名必须是字母和数字，且长度必须是4到25之间！"); } if (pass != null && !Pattern.matches("\\w{4,25}", pass.trim())) { addFieldError("pass" , "您输入密码必须是字母和数字，且长度必须是4到25之间！"); } if (age > 150 || age <= 0) { addFieldError("age" , "您输入的年龄必须是一个有效的年龄！"); } Calendar end = Calendar.getInstance(); end.set(2050 , 2 , 21); Calendar start = Calendar.getInstance(); start.set(1900 , 1 , 1); if (birth != null && (birth.after(end.getTime()) || birth.before(start.getTime()))) { addFieldError("birth" , "您输入的生日必须在一个有效的时间段内"); } } }