struts2验证框架

Struts2验证框架验证用户注册
核心代码如下:
1.用户注册页面register.jsp

Java代码  

<form action="register.action" method="post">    <I><font face="楷体_GB2312" color="#FF0000"><s:fielderror />    </font>    </I>    <!-- 读取显示提示信息 -->    <table>     <tr>      <td>       用户名:      </td>      <td>       <input type="text" name="user.userName">      </td>     </tr>     <tr>      <td>       密码:      </td>      <td>       <input type="password" name="user.password">      </td>     </tr>     <tr>      <td>       确认密码:      </td>      <td>       <input type="password" name="user.rePassword">      </td>     </tr>     <tr>      <td>       年龄:      </td>      <td>       <input type="text" name="user.age">      </td>     </tr>     <tr>      <td>       生日:      </td>      <td>       <input type="text" name="user.birthday">      </td>     </tr>     <tr>      <td colspan="2">       <s:submit value="注册"></s:submit>      </td>     </tr>    </table>   </form>

2.注册成功欢迎页面welcome.jsp

Java代码  

congratulations!${user.userName} <br>

3.注册处理action RegisterAction

Java代码  

package org.kingtoon.action;import javax.servlet.http.HttpServletRequest;import org.apache.struts2.ServletActionContext;import org.kingtoon.bean.User;import com.opensymphony.xwork2.ActionSupport;public class RegisterAction extends ActionSupport {private User user;@Overridepublic String execute() throws Exception {   if(!(user.getPassword().equals(user.getRePassword()))){      this.addFieldError("password", "请输入相同的密码");      return "input";   }    else   {     HttpServletRequest request = ServletActionContext.getRequest ();    request.setAttribute("user", user);    return SUCCESS;   }  }public User getUser() {   return user;}public void setUser(User user) {   this.user = user;}}

4. 用户Bean User.java

Java代码  

package org.kingtoon.bean;import java.util.Date;public class User {private String userName;private String password;private String rePassword;private Integer age;private Date birthday;public Integer getAge() {   return age;}public void setAge(Integer age) {   this.age = age;}public Date getBirthday() {   return birthday;}public void setBirthday(Date birthday) {   this.birthday = birthday;}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 String getUserName() {   return userName;}public void setUserName(String userName) {   this.userName = userName;}}

5.配置验证文件RegisterAction-validation.xml

Java代码    

<validators><field name="user.userName">   <!-- 验证字符串不能为空 -->   <field-validator type="requiredstring">    <!-- 去空格 -->    <param name="trim">true</param>    <!-- 错误提示信息 -->    <message>用户名不能为空</message>   </field-validator>     <!-- 验证字符串长度 -->   <field-validator type="stringlength">    <param name="minLength">2</param>    <param name="maxLength">20</param>    <message>用户名长度应在2到18个字符间</message>   </field-validator></field><field name="user.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">18</param>    <message>密码长度应在6到18个字符之间</message>   </field-validator></field><field name="user.age">   <field-validator type="int">    <param name="min">1</param>    <param name="max">150</param>    <message>年龄应在1到150之间</message>   </field-validator></field><!-- 验证字符串为日期类型 --><field name="user.birthday">   <field-validator type="date">    <param name="min">1900-01-01</param>    <param name="max">2008-10-16</param>    <message>出生日期应在1900-01-01到2008-10-16</message>   </field-validator></field></validators>

6.struts2框架默认加载的配置文件struts.xml

Java代码  

<struts>     <constant name="struts.custom.i18n.resources" value="messageResource"></constant>        <package name="user" extends="struts-default">    <action name="register" class="org.kingtoon.action.RegisterAction">       <result name="success">/welcome.jsp</result>       <result name="input">/register.jsp</result>    </action>    </package></struts>

7.web服务器启动时加载Struts 配置文件 web.xml

Java代码    

<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd"><filter>   <filter-name>struts-cleanup</filter-name>   <filter-class>    org.apache.struts2.dispatcher.ActionContextCleanUp   </filter-class></filter><filter>   <filter-name>struts2</filter-name>   <filter-class>    org.apache.struts2.dispatcher.FilterDispatcher   </filter-class></filter><filter-mapping>   <filter-name>struts-cleanup</filter-name>   <url-pattern>/*</url-pattern></filter-mapping><filter-mapping>   <filter-name>struts2</filter-name>   <url-pattern>/*</url-pattern></filter-mapping><welcome-file-list>   <welcome-file>register.jsp</welcome-file></welcome-file-list></web-app>

至此,完毕.不过需要注意:
1.配置验证xml文档的名字有讲究:格式为:Action名字(类)-validation.xml,与类在同一包中;
2.验证文档里的<field-validator type="">中的type类型要和VO中的User属性类型一致,否则会报类型转换错误