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>  

<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>  

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;   

@Override  

public 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;   

}   

}  

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;
@Override
public 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;   

}   

  

}  

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>  

<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>  

<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>  

<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