struts2对action中的方法进行输入校验（2）

struts2输入校验流程：

1.类型转换器对请求参数执行类型转换，并把转换后的值赋给aciton中的属性

2.如果在执行类型转换的过程中出现异常，系统会将异常信息保存到ActionContext,

conversionError拦截器将异常信息添加到fieldErrors里，不管类型转换是否出现异常，都会进入第三步

3.系统通过反射技术先调用action的validateXXX方法

4.再调用aciton中的validate方法

5.经过上述的4步，如果系统中的fieldErrors存在错误信息，系统自动将请求转发至名称为input的视图

如果系统中的fieldErrors没有任何错误信息，系统将执行aciton中的处理方法。

也就是说转发至input视图有两个原因：1.类型转换异常

2.输入校验不合法

如下：

InvidateAction.java:

package com.itheima.action;

import java.util.Date;

import com.opensymphony.xwork2.ActionSupport;

public class InvidateAction extends ActionSupport{

	private String username;
	private String tel;
	private Date birthday;
	private String msg;
	public void setUsername(String username) {
		this.username = username;
	}
	public void setTel(String tel) {
		this.tel = tel;
	}
	
	public void setBirthday(Date birthday) {
		this.birthday = birthday;
	}
	public String getMsg() {
		return msg;
	}
	public void validate() {
		
	}
	public String execute1() {
		msg = "execute1";
		return "success";
	}
	public String execute2() {
		msg = "execute2";
		return "success";
	}
}

person.jsp:

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>




  



	
  
	
  

   
		用户名：
   
   

		手机号：
   
   

		生日：
   
   

		
   
	
  

  
	
   
    /success.jsp
   
	
   
    /person.jsp
   

  

我在jsp中输入信息如下：

则会提示：vcyzzLLOvPujumh0dHA6Ly9ibG9nLmNzZG4ubmV0L202MzE1MjEzODMvYXJ0aWNsZS9kZXRhaWxzLzQwNjgwNzIzPC9wPgo8cD5JbnZpZGF0ZUFjdGlvbi5qYXZhOjwvcD4KPHA+PC9wPgo8cHJlIGNsYXNzPQ=="brush:java;">package com.itheima.action; import java.util.Date; import com.opensymphony.xwork2.ActionSupport; public class InvidateAction extends ActionSupport{ private String username; private String tel; private Date birthday; private String msg; public void setUsername(String username) { this.username = username; } public void setTel(String tel) { this.tel = tel; } public void setBirthday(Date birthday) { this.birthday = birthday; } public String getMsg() { return msg; } public void validate() { } public String execute1() { msg = "execute1"; return "success"; } public String execute2() { msg = "execute2"; return "success"; } }
DateTypeConverter.java:

package com.itheima.converter;

import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Map;

import com.opensymphony.xwork2.conversion.impl.DefaultTypeConverter;

public class DateTypeConverter extends DefaultTypeConverter{

	@Override
	public Object convertValue(Map
  
    context, Object value,
			Class toType) {
		SimpleDateFormat dateFormat = new SimpleDateFormat("yyyymmdd");
		if(toType == Date.class) {
			String[] strs = (String[])value;
			Date date = null;
			try {
				date = dateFormat.parse(strs[0]);
			} catch (ParseException e) {
				e.printStackTrace();
				throw new RuntimeException(e);
			}
			return date;
		} else if(toType == String.class) {
			return dateFormat.format((Date)value);
		}
		
		return null;
	}

	
}

  

birthday=com.itheima.converter.DateTypeConverter