spring:bind

web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
    <!--context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param-->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>redirect.jsp</welcome-file>
        </welcome-file-list>
    </web-app>


dispatch-servlet.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
   
   <bean id="defaultHandlerMapping"
class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping" />
   
    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="register.htm">registerController</prop>
                <prop key="login.htm">loginController</prop>
                <prop key="index.htm">indexController</prop>
            </props>
        </property>
    </bean>
   
   <bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
            <property name="prefix">
                <value>/WEB-INF/jsp</value>
            </property>
            <property name="suffix">
                <value>.jsp</value>
            </property>
</bean>
        <bean id="indexController"
                    class="org.springframework.web.servlet.mvc.ParameterizableViewController"
                    p:viewName="/register"/>
    <bean id="registerController" class="net.kingbit.actions.RegisterStudentController">
        <property name="sessionForm">
            <value>true</value>
        </property>
         <property name="commandName">
            <value>student</value>
        </property>

<property name="formView" value="/register"/>
        <property name="commandClass">
            <value>net.kingbit.pojos.Student</value>
        </property>
        <property name="validator">
           <ref bean="registerValidator"/>
        </property>
      </bean>
     
<bean id="loginController" class="net.kingbit.actions.LoginController"/>

   <bean id="registerValidator" class="net.kingbit.validator.StudentValidator"/>

</beans>


redirect.jsp:
<%--
Views should be stored under the WEB-INF folder so that
they are not accessible except through controller process.

This JSP is here to provide a redirect to the dispatcher
servlet but should be the only JSP outside of WEB-INF.
--%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<% response.sendRedirect("register.htm"); %>

register.jsp:
<%--
    Document   : register
    Created on : Jan 31, 2009, 10:49:30 AM
    Author     : Kang
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<%@ taglib prefix="spring" uri="http://www.springframework.org/tags" %>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>



  </head>


  <body>
   <form action="<%=request.getContextPath() %>/register.htm" method="post" name="registerForm">
   
   <table>
        <tr><td><spring:bind path="student.name">
      name: <input type="text" name="${status.expression}"/>(必须输入) </td> <td>${status.errorMessage}</spring:bind></td>  </tr>
    <tr><td><spring:bind path="student.sex">
     sex:  <input type="text" name="${status.expression}"/>(必须输入,且为0或1)</td><td>
        ${status.errorMessage}</spring:bind>
     </td></tr>
    </table>
      
 
    
           <input type="submit" value="submit"/>

   </form>
  </body>
</html>


RegisterStudentController:
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package net.kingbit.actions;

import net.kingbit.pojos.Student;
import org.springframework.validation.BindException;
import org.springframework.web.servlet.ModelAndView;
import org.springframework.web.servlet.mvc.SimpleFormController;

/**
*
* @author Kang
*/
public class RegisterStudentController extends SimpleFormController{


protected ModelAndView onSubmit(Object object, BindException be) throws Exception {
         Student stu=(Student)object;
         return new ModelAndView("/success","student",stu);
    }
}



StudentValidator:验证类

/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package net.kingbit.validator;

import org.apache.oro.text.perl.Perl5Util;
import net.kingbit.pojos.Student;
import org.springframework.validation.Errors;
import org.springframework.validation.ValidationUtils;
import org.springframework.validation.Validator;

/**
*
* @author Kang
*/
public class StudentValidator implements Validator {
  private static String SEX_REGEXP="/^[0-1]$/";
    public boolean supports(Class cls) {
        return cls.equals(Student.class);
    }

    public void validate(Object object, Errors errors) {
         Student student=(Student)object;
       if(student.getName().equals("")||student.getName().equals(null))
       {ValidationUtils.rejectIfEmpty(errors, "name", "name", "姓名必须输入");}

         if(student.getSex().equals("")||student.getSex().equals(null)){ValidationUtils.rejectIfEmpty(errors, "sex", "sex", "性别必须输入");}
        Perl5Util perl5Util=new Perl5Util();
        if(!perl5Util.match(SEX_REGEXP, student.getSex())){
            errors.rejectValue("sex", "not confirmat", null,"性别格式错误");}
    }

}



Student:一个简单的pojo
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/

package net.kingbit.pojos;

/**
*
* @author Kang
*/
public class Student {
   private String name;
   private String sex;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

}


跳转到表单页面的Controller必须是表单控制器！换颜色的地方就是要注意的地方！