Struts2輸入校驗
阿新 • • 發佈：2017-08-25
exp cdata tin .get xwork scheme field -1 rac
regist.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <%@ taglib prefix="s" uri="/struts-tags"%> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <base href="<%=basePath%>"> <title>My JSP ‘index.jsp‘ starting page</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"> <meta http-equiv="description" content="This is my page"> <!-- <link rel="stylesheet" type="text/css" href="styles.css"> --> </head> <body> <form action="userAction_regist" method="post"> 用戶名:<input type="text" name="username" value="${username }"/><span style="color:red"><s:property value="fieldErrors[‘username‘][0]"/></span><br/> 密碼:<input type="text" name="pwd" value="${pwd }"/><span style="color:red"><s:property value="fieldErrors[‘pwd‘][0]"/></span><br/> <input type="submit" value="註冊"/> </form> </body> </html>
2、UserAction.java
package com.cn.action; import com.opensymphony.xwork2.ActionSupport; public class UserAction extends ActionSupport { private String username; private String pwd; public String login(){ System.out.println("login ... "); return "welcome"; }public String regist(){ System.out.println("regist..."); return "welcome"; } //validateLogin表示要驗證login方法 public void validateRegist() { boolean u = username.matches("\\w{2,12}"); boolean p = pwd.matches("\\w{6,12}"); if(!u){ this.addFieldError("username", "用戶名必須在2-12位之間"); } if(!p){ this.addFieldError("pwd", "密碼必須在6-12位之間"); } } public String getUsername() { return username; } public void setUsername(String username) { this.username = username; } public String getPwd() { return pwd; } public void setPwd(String pwd) { this.pwd = pwd; } }
3、重寫validateXxx或者RegistUserAction-registUserAction_regist-validation.xml
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE validators PUBLIC "-//Apache Struts//XWork Validator 1.0.3//EN" "http://struts.apache.org/dtds/xwork-validator-1.0.3.dtd"> <validators> <field name="username"><!--用戶名--> <field-validator type="requiredstring"><!--字符串必填校驗器--> <message>賬號不能為空</message> </field-validator> <field-validator type="stringlength"><!--字符串長度校驗器--> <param name="minLength">2</param> <param name="maxLength">12</param> <message>賬號長度必須在${minLength}至${maxLength}之間</message> </field-validator> <field-validator type="regex"><!--正則表達式校驗器--> <param name="regexExpression"> <![CDATA[(^[^ ]{1,}$)]]> </param> <message>賬號中不允許出現空格</message> </field-validator> </field> <field name="pwd"><!--pwd屬性--> <field-validator type="requiredstring"><!--字符串必填校驗器 --><message>密碼不能為空</message> </field-validator> <field-validator type="stringlength"><!--字符串長度校驗器--> <param name="minLength">6</param> <param name="maxLength">12</param> <message>密碼長度必須在${minLength}至${maxLength}之間</message> </field-validator> <field-validator type="regex"><!--正則表達式校驗器--> <param name="regexExpression"> <![CDATA[(^[^ ]{1,}$)]]> </param> <message>密碼中不允許出現空格</message> </field-validator> </field> </validators>
4、struts.xml
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <package name="test" namespace="/" extends="struts-default"> <action name="userAction_*" class="com.cn.action.UserAction" method="{1}"> <result name="welcome">/welcome.jsp</result> <result name="input">/index.jsp</result> </action> <action name="registUserAction_*" class="com.cn.action.RegistUserAction" method="{1}"> <result name="ok">/welcome.jsp</result> <result name="input">/registUser.jsp</result> </action> </package> </struts>
Struts2輸入校驗