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				Struts2 表單數據校驗
			
          
 			Posted on 2010-03-30 00:43 Gavin.lee 閱讀(472) 評論(0)  編輯  收藏  所屬分類: SSH2 --Struts2 
			
			


		
          
		
          http://www.aygfsteel.com/max/archive/2006/11/14/81106.html 
          
All Input Is Evil!
          

          利用Action的validate方法進行的注冊表單驗證
          

          
一、注冊輸入頁面 reg.jsp
          

          <%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
          
          <%
          
              String path = request.getContextPath();
          
              String basePath = request.getScheme() + "://" + request.getServerName() + ":" + request.getServerPort() + path + "/";
          
          %>
          
          <%@ taglib prefix="s" uri="/struts-tags"%>
          
          <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
          
          <html>
          
              <head>
          
                  <title>welcomme register page !</title>
          
              </head>
          
              <s:fielderror></s:fielderror>
          
              <body bgcolor="red">
          
                  <s:form action="reg" method="post">
          
                      <table align="center" width="40%" border="1" bgcolor="cyan">
          
                          <tr>
          
                              <td>username:</td>
          
                              <td><input type="text" name="username" /></td>
          
                          </tr>
          
                          <tr>
          
                              <td>password:</td>
          
                              <td><input type="text" name="password" /></td>
          
                          </tr>
          
                          <tr>
          
                              <td>re-password:</td>
          
                              <td><input type="text" name="repassword" /></td>
          
                          </tr>
          
                          <tr>
          
                              <td>age:</td>
          
                              <td><input type="text" name="age" /></td>
          
                          </tr>
          
                          <tr>
          
                              <td>
          
                        birthday:
          
                              </td>
          
                              <td>
          
                                  <input type="text" name="birthday" />
          
                              </td>
          
                          </tr>
          
                          <tr>
          
                              <td>graduation:</td>
          
                              <td><input type="text" name="graduation" /></td>
          
                          </tr>
          
                          <tr>
          
                              <td><input type="submit" value="Submit " /></td>
          
                              <td><input type="reset" value="Reset " /></td>
          
                          </tr>
          
                      </table>
          
                  </s:form>
          
              </body>
          
          </html>
          

          

          

          
二、Struts2 核心配置文件中對RegAction的映射
          

          <?xml version="1.0" encoding="UTF-8" ?>
          
          <!DOCTYPE struts PUBLIC
          
    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
          
    "http://struts.apache.org/dtds/struts-2.0.dtd"          >
          
          <struts>
          
              <package name="interceptor1" extends="struts-default">
          
                  <action name="reg" class="reg.RegAction">
          
                      <result name="success">/success.jsp</result>
          
                      <result name="input">/reg.jsp</result>
          
                  </action>
          
              </package>
          
          </struts>
          

          
三、執行驗證
          

          package reg;
          

          
          import java.util.Calendar;
          
          import java.util.Date;
          

          
          import com.opensymphony.xwork2.ActionSupport;
          

          
          public class RegAction extends ActionSupport {
          

          
              /**
          
     * 
          
               */
          
              private static final long serialVersionUID = 1L;
          

          
              private String username;
          

          
              private String password;
          

          
              private String repassword;
          

          
              private int age;
          

          
              private Date birthday;
          

          
              private Date graduation;
          

          
              public String getUsername() {
          
                  return username;
          
    }
          

          
              public void setUsername(String username) {
          
                  this.username = username;
          
    }
          

          
              public String getPassword() {
          
                  return password;
          
    }
          

          
              public void setPassword(String password) {
          
                  this.password = password;
          
    }
          

          
              public String getRepassword() {
          
                  return repassword;
          
    }
          

          
              public void setRepassword(String repassword) {
          
                  this.repassword = repassword;
          
    }
          

          
              public int getAge() {
          
                  return age;
          
    }
          

          
              public void setAge(int age) {
          
                  this.age = age;
          
    }
          

          
              public Date getBirthday() {
          
                  return birthday;
          
    }
          

          
              public void setBirthday(Date birthday) {
          
                  this.birthday = birthday;
          
    }
          

          
              public Date getGraduation() {
          
                  return graduation;
          
    }
          

          
              public void setGraduation(Date graduation) {
          
                  this.graduation = graduation;
          
    }
          

          
              public String execute() throws Exception {
          
                  //DO Register Process
          
                  return SUCCESS;
          
    }
          

          
              // 驗證form表單輸入信息
          
              public void validate() {
          
                  this.clearErrorsAndMessages();
          
        
          
                  // 名字為空 或者長度小于6大于10
          
                  if (null == username || username.length() < 6 || username.length() > 10) {
          
                      this.addFieldError("username", "username invalid");
          
        }
          
        
          
                  // 密碼為空或者長度小于6或者大于10
          
                  if (null == password || password.length() < 6 || password.length() > 10) {
          
                      this.addFieldError("password", "password invalid");
          
                      // 確認密碼為空或者長度小于6或者大于10
          
                  }           else if (null == repassword || repassword.length() < 6 || repassword.length() > 10) {
          
                      this.addFieldError("repassword", "re-password invalid");
          
                      // 密碼和確認密碼值不是一樣的
          
                  }           else if (!password.equals(repassword)) {
          
                      this.addFieldError("repassword", "re-password and password not accord");
          
        }
          
        
          
                  // 年齡長度小于1或者大于150
          
                  if (age < 1 || age > 150) {
          
                      this.addFieldError("age", "age invalid");
          
        }
          
        
          
                  // birthday 和 graduation 為空 或者 birthday 在 graduation 之前
          
                  if (null == birthday) {
          
                      this.addFieldError("birthday", "birthday invalid");
          
        }
          
        
          
                  if (null == graduation) {
          
                      this.addFieldError("graduation", "graduation invalid");
          
        }
          
        
          
                  if (null != birthday && null != graduation) {
          
            Calendar c1           = Calendar.getInstance();
          
            c1.setTime(birthday);
          

          
            Calendar c2           = Calendar.getInstance();
          
            c2.setTime(graduation);
          

          
                      if (c1.before(c2)) {
          
                          this.addFieldError("graduation", "birthday be forword graduation");
          
            }
          
        }
          
        
          
    }
          
    
          
}
          

          

          
	
          
	


          
	    
    




          








          

				
			
          
		          		
	
          
	
          
		
			


		
	
          

          


    







          
        
	




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