校验器-对提交的用户名和密码进行过滤

学渣要做笔记，学渣要做笔记~~~~

校验器分三部分，在一个做好了的登录界面上进行添加

1.在.jsp中添加，其中的S标签就是添加的，重要的是不要忘了<%@taglib  prefix="s" uri="/struts-tags"%>

 1 <tr>
 2                         <td>&nbsp;</td>
 3                         <td width="11%" height="40" >用户名：&nbsp;&nbsp;</td>
 4                         <td height="40" colspan="2">
 5                         <input type="text" size="20" border="1" name="infor.name">
 6                         <s:property value="fieldErrors[‘infor.name‘][0]" />
 7                         </td>
 8                     </tr>
 9                     <tr>
10                         <td>&nbsp;</td>
11                         <td width="11%" height="28">密码<img src="<%=request.getContextPath()%>/images/luck.gif" width="19" height="18">：&nbsp;&nbsp;
12                         </td>
13                         <td height="28" colspan="2"><input type="text" size="20" border="1" name="infor.password">
14                         <s:property value="fieldErrors[‘infor.password‘][0]" />
15                         </td>
16                     </tr>

2.在X-x-validation.xml中写校验信息

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE validators PUBLIC
 3           "-//OpenSymphony Group//XWork Validator 1.0.3//EN"
 4           "http://www.opensymphony.com/xwork/xwork-validator-1.0.3.dtd">//是什么版本就写什么版本
 5 <validators>
 6      <field name="infor.name">
 7           <field-validator type="requiredstring">
 8                <message>用户名不能为空</message>
 9          </field-validator>
10          <field-validator type="stringlength">
11               <param name="minLength">2</param>
12               <param name="maxLength">12</param>
13               <message>
14                        账号长度必须在${minLength}~${maxLength}之间
15               </message>
16          </field-validator>
17         </field>
18
19          <field name="infor.password">
20              <field-validator type="requiredstring">
21                     <message>密码不能为空</message>
22              </field-validator>
23          <field-validator type="stringlength">
24               <param name="minLength">3</param>
25               <param name="maxLength">12</param>
26               <message>
27                       密码长度必须在${minLength}~${maxLength}之间
28               </message>
29          </field-validator>
30       </field>
31 </validators>

3~.Java文件中是用的默认execute（）{}方法，那就直接在Struts.xml中加入input跳转的界面

1     <action name="landing" class="com.chinasofti.strutshuman.struts.Landing">
2         <result name="havelervel1" type="dispatcher">/massage.jsp</result>
3         <result name="havelervel2" type="dispatcher">/massage.jsp</result>
4         <result name="havelervel3" type="dispatcher">/massage.jsp</result>
5         <result name="havepassword" type="dispatcher">/massage.jsp</result>
6         <result name="input" type="dispatcher">/landing.jsp</result>
7     </action>