struts中DynaActionForm的使用

struts-config.xml的内容：

<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE struts-config PUBLIC
        "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
        "http://struts.apache.org/dtds/struts-config_1_3.dtd">

<struts-config>

    <form-beans>
        <form-bean name="addStudentForm" type="org.apache.struts.action.DynaActionForm">
            <form-property name="name" type="java.lang.String" ></form-property>
            
            <form-property name="major" type="java.lang.String"></form-property>
            
            <form-property name="age" type="java.lang.Integer"></form-property>
            
        </form-bean>
    </form-beans>  
    
    <action-mappings>  
        <action path="/addStudent" name="addStudentForm" type="blog.addStudentAction">
            <forward name="success" path="/AddStudent.jsp"></forward>
            <forward name="failure" path="/AddStudentFailure.jsp"></forward>
        </action>
    </action-mappings>
    
    <message-resources parameter="cn.itcast.ApplicationResources" key="myKey"></message-resources>
 
</struts-config>

package blog;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.DynaActionForm;

public class addStudentAction extends Action {

    @Override
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        DynaActionForm dynaActionForm = (DynaActionForm)form;
        
        String name = (String)dynaActionForm.get("name");
        int age = (Integer)dynaActionForm.get("age");
        String major = dynaActionForm.getString("major");
        
        System.out.println("name:" + name + "\tmajor:" + major + "\tage:" + age );
        
        return mapping.findForward("success");
        
    }
    
}

对DynaActionForm类型的类的属性的使用：

在Jsp页面中可以这样引用DynaActionForm中的属性：

${addStudentForm.map.name }