Struts2框架证验

Struts2框架验证

<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

congratulations!${user.userName} <br>
3.注册处理action RegisterAction

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

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

<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

<struts> <constant name="struts.custom.i18n.resources" value="messageResource"></constant> <package name="user" extends="struts-default"> <action name="register" alt="Struts2框架证验">
<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