简单的struts2输入校验框架
1.输入页面login.jsp：
<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%@ taglib prefix="s" uri="/struts-tags"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
???? <title>My JSP 'login.jsp' starting page</title>
??? </head>
<body>
<!--
?? <table align = "center">
??? <tr>
???? <td>
????? <s:fielderror cssStyle="color:red" />
???? </td>
??? </tr>
?? </table>
-->???
<!-- 表单重复提交的错误信息放在了actionerror中 -->
<s:actionerror/>
?? <s:form action="login" method = "post" theme = "simple" >
???<s:token></s:token><!--防止表单重复提交-->
??? <table align="center" border="1" width="60%">
???? <tr>
????? <td >
?????? username
????? </td>
????? <td>
?????? <s:textfield name="username" cssStyle="Color:red"></s:textfield>
????? </td>
????? <td style="color:red">
?????? <s:fielderror>
??????? <s:param>username</s:param>
?????? </s:fielderror>
????? </td>
???? </tr>
???? <tr>
????? <td>
?????? password
????? </td>
????? <td>
?????? <s:password name="password"></s:password>
????? </td>
????? <td style="color:red">
?????? <s:fielderror>
??????? <s:param>password</s:param>
?????? </s:fielderror>
????? </td>
???? </tr>
???? <tr>
????? <td>
?????? repassword
????? </td>
????? <td>
?????? <s:password name="repassword" label="repassword"></s:password>
????? </td>
????? <td style="color:red">
?????? <s:fielderror>
??????? <s:param>repassword</s:param>
?????? </s:fielderror>
????? </td>
???? </tr>
???? <tr>
????? <td>
?????? age
????? </td>
????? <td>
?????? <s:textfield name="age" label="age"></s:textfield>
????? </td>
????? <td style="color:red">
?????? <s:fielderror>
??????? <s:param>age</s:param>
?????? </s:fielderror>
???? <tr>
????? <td>
?????? birthday
????? </td>
????? <td>
?????? <s:textfield name="birthday" label="birthday"></s:textfield>
????? <td style="color:red">
?????? <s:fielderror>
??????? <s:param>birthday</s:param>
?????? </s:fielderror>
???? <tr>
????? <td>
?????? graduation
????? </td>
????? <td>
?????? <s:textfield name="graduation" label="graduation"></s:textfield>
????? </td>
????? <td style="color:red">
?????? <s:fielderror>
??????? <s:param>graduation</s:param>
?????? </s:fielderror>
???? <tr>
????? <td>
?????? <s:submit label="submit"></s:submit>
????? </td>
????? <td>
?????? <s:reset label="reset" />
????? </td>
???? </tr>
??? </table>
?? </s:form>
</body>
</html>
2.struts.xml配置文件：
<constant name="struts.custom.i18n.resources" value="message"></constant>
<action name="login" type ="redirect">/login.jsp</result>
???? <result name = "success">/result.jsp</result>
???? <result name = "invalid.token">/login.jsp</result>
???? <!-- 防止表单重复提交的拦截器 -->
???? <interceptor-ref name="token"></interceptor-ref>
????
????? <!-- 指定/排除某些方法的拦截器,指定和排除同时存在时,指定的优先级高-->
????? <!-- myInterceptor3为自定义的一个拦截器，这里不再贴出来了-->
???? <interceptor-ref name="myInterceptor3">
????? <param name="includeMethods">execute,test</param>?? <!-- 指定-->
????? <param name="excludeMethods">execute,test</param><!-- 排除-->
???? </interceptor-ref>
???
????? <!-- 当提供自定义的拦截器后,默认拦截器失效,所以要手动包含进来-->
????
???? <interceptor-ref name="defaultStack"></interceptor-ref>
???? </action>
3.LoginAciton.java:
package com.struct2.test;
import java.util.Date;
import java.util.Map;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport{
private String username;
private String password;
private String repassword;
private int age;
private Date birthday;
private Date graduation;
//get和set方法省略
@SuppressWarnings("unchecked")
public String execute(){
//?? if("hahadao".equals(this.getUsername().trim())&&"123456".equals(this.getPassword().trim())){
//??? return SUCCESS;
//?? }else{
//??this.addFieldError("username", "username or password error"); //fielderror是map。key-value对。
//?? return INPUT;
//?? }
?? Map map = ActionContext.getContext().getSession();//session也为map。
?? map.put("password", this.getPassword());
?? //ServletActionContext比ActionContext能多拿到一个response,其他两者一样。
?? HttpServletResponse response = ServletActionContext.getResponse();
?? HttpServletRequest request = ServletActionContext.getRequest();
?? System.out.println("------u-------"+username);
?? Cookie cookie = new Cookie("username",this.getUsername());
?? cookie.setMaxAge(1000);
?? response.addCookie(cookie);
?? System.out.println(password + "-----密码确认是："+repassword);
??
?? return SUCCESS;
}
public void test(){
??
}
// @Override
// public void validate() {//采用struts校验框架验证，不需要validate方法。
//??
//?? if(null==this.getUsername()||"".equals(this.getUsername().trim())){
//??? this.addFieldError("username", "username required");
//?? }
//??
//?? if(null==this.getPassword()||"".equals(this.getPassword().trim())){
//??? this.addFieldError("password", "password required");
//?? }
// }
}
4.LoginAction-validation.xml：
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE validators PUBLIC
"-//OpenSymphony Group//XWork Validator 1.0//EN"
"http://www.opensymphony.com/xwork/xwork-validator-1.0.2.dtd">
<validators>
?? <field name="username">
??? <field-validator type="requiredstring">
???? <param name="trim">true</param>
???? <message>名字不能为空</message>
??? </field-validator>
??? <field-validator type="stringlength">
???? <param name="minLength">6</param>
???? <param name="maxLength">10</param>
???? <message>名字长度在${minLength}到${maxLength}之间</message>
??? </field-validator>
??? </field>
???
??? <field name="password">
??? <field-validator type="requiredstring">
???? <param name="trim">true</param>
???? <message>密码不能为空</message>
??? </field-validator>
??? <field-validator type="stringlength">
???? <param name="minLength">6</param>
???? <param name="maxLength">10</param>
???? <message>密码长度在${minLength}到${maxLength}之间</message>
??? </field-validator>
?? </field>
??
?? <field name="repassword">
??? <field-validator type="requiredstring">
???? <param name="trim">true</param>
???? <message>密码确认不能为空</message>
??? </field-validator>
??? <field-validator type="stringlength">
???? <param name="minLength">6</param>
???? <param name="maxLength">10</param>
???? <message>密码确认长度在${minLength}到${maxLength}之间</message>
??? </field-validator>
?? </field>
??
?? <field name="repassword">
??? <field-validator type="fieldexpression">
????<param name="expression">
????? <![CDATA[repassword==password]]>
???? </param>
???? <message>密码确认要和密码一致</message>
??? </field-validator>
?? </field>
??
?? <field name="age">
??? <field-validator type="int">
???? <param name="min">1</param>
???? <param name="max">150</param>
???? <message>年龄应该在${min}到${max}之间</message>
??? </field-validator>
?? </field>
??
?? <field name="birthday">
??? <field-validator type="required">
?? ??? <message>生日不能为空</message>
??? </field-validator>
??? <field-validator type="date">
???? <param name="min">1900-01-01</param>
???? <param name="max">2001-01-01</param>
???? <message>生日必须在${min}和${max}之间</message>
??? </field-validator>
?? </field>
??
?? <field name="graduation">
??? <field-validator type="required">
?? ??? <message>毕业时间不能为空</message>
??? </field-validator>
??? <field-validator type="date">
???? <param name="min">1990-01-01</param>
???? <param name="max">2010-01-01</param>
???? <message>毕业时间必须在${min}和${max}之间</message>
??? </field-validator>
?? </field>
</validators>
5.result.jsp
<body>
??? username:${request.username }<br>
??? password:${requestScope.password }<br>
??? age:${requestScope.age }<br>
??? birthday:${request.birthday }<br>
??? request:<%=request.getAttribute("birthday") %><br>
??? cookie:${cookie.username.value}
</body>
6.国际化资源文件message.properties配置：
当表单重复提交时防止struts2在页面自动输出英文提示信息，而是自定义输出中文信息如下为（“不能重复提交表单！ ”）
struts.messages.invalid.token=\u4e0d\u80fd\u91cd\u590d\u63d0\u4ea4\u8868\u5355\uff01
?
