表单取值中，上传控件的From类，也可以取普通控件的值，还不打扰BeanUtils.getProperty也能取值

关于添加一个学生，学生修改自己信息，学生要上传一个附件（交作业附件），都要用到表单，

特别是带上传file控件的表单，反正都跟学生有关，并且反正，struts1.2上传要定义一个Form extends ActionForm

那就干脆把这个Form取名  StudentForm extends ActionForm 

public class StudentForm extends ActionForm {
	/**
	 * 关于学生的表单都到这里
	 */
	private static final long serialVersionUID = 1L;
	private FormFile homeworkFile;
	private String stuname;
	private String username;
	private String password;
	private String email;//邮箱
	private Byte state = 0;//学员状态，0为正常，1为休学

	getter/setter方法。。。。。
}

struts-config.xml里面：

		<form-bean name="StudentForm" type="com.cn.action.StudentForm">
			<form-property name="username" type="java.lang.String"></form-property>
			<form-property name="password" type="java.lang.String"></form-property>
			<form-property name="stuname" type="java.lang.String"></form-property>
			<form-property name="email" type="java.lang.String"></form-property>
		</form-bean>

		<action path="/studentInfo" name="StudentForm"
			parameter="action" type="com.cn.action.StudentAction">
		</action>

StudentAction  extends DispatchAction类中：

添加一个学生
public ActionForward addAStudent(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {

		StudentForm studentForm = (StudentForm) form;
		String username = studentForm.getUsername();
		String password = studentForm.getPassword();
		String stuname = studentForm.getStuname();
		.............................
}

修改信息的方法，用BeanUtils.getProperty(form, "xxx");也可以取表单内容，可能是因为本身就是
StudentForm extends ActionForm，都是兼容的
	/**
	 * 学生修改信息更新
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return
	 */
	public ActionForward updateTheStudent(ActionMapping mapping,
			ActionForm form, HttpServletRequest request,
			HttpServletResponse response) {
		String username = null;
		String password = null;
		String email = null;
		try {
			username = BeanUtils.getProperty(form, "username");
			password = BeanUtils.getProperty(form, "password");
			email = BeanUtils.getProperty(form, "email");
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			e.printStackTrace();
		}
	...................
	}

	/**
	 * 上传作业
	 * 
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return
	 */
	public ActionForward uploadHomework(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		StudentForm myForm = (StudentForm) form;
		FormFile fileobj = myForm.getHomeworkFile();


		// 底下都是为了拼装文件名：姓名_项目名.rar
		// 这个主要是利用它fileName得到后缀名
		String fileName = fileobj.getFileName();
		.................................
	}

我想要说的是，刚发现的：
在addAStudent()方法中，两种方法 得到表单控件内容都可以，
第一种：
		StudentForm studentForm = (StudentForm) form;
		String username = studentForm.getUsername();
		String password = studentForm.getPassword();
		String stuname = studentForm.getStuname();
		
第二种：		
		//用(StudentForm) form;可以取
		//但用BeanUtils.getProperty取可以吗
		String username = null;
		String password = null;
		String stuname = null;
		try {
			username = BeanUtils.getProperty(form, "username");
			password = BeanUtils.getProperty(form, "password");
			stuname = BeanUtils.getProperty(form, "stuname");
		} catch (IllegalAccessException e) {
			e.printStackTrace();
		} catch (InvocationTargetException e) {
			e.printStackTrace();
		} catch (NoSuchMethodException e) {
			e.printStackTrace();
		}
	System.out.println("用BeanUtils.getProperty取可以吗？"+username+password+stuname);
空置台：用BeanUtils.getProperty取可以吗？xiaoluo 123 小罗


结论：对于表单的普通控件内容，
如果你想用第一种，那就在StudentForm extends ActionForm中，定义出属性，
	private String stuname;
	private String username;
	private String password;
	private String email;//邮箱

在Action中要用就直接getter取
		StudentForm studentForm = (StudentForm) form;
		String username = studentForm.getUsername();
		String password = studentForm.getPassword();
		String stuname = studentForm.getStuname();

如果用第二种那就在struts-config.xml中一样都不能少，
在Action中要用就 BeanUtils.getProperty(form, "xxx");
		<form-bean name="StudentForm" type="com.cn.action.StudentForm">
			<form-property name="username" type="java.lang.String"></form-property>
			<form-property name="password" type="java.lang.String"></form-property>
			<form-property name="stuname" type="java.lang.String"></form-property>
			<form-property name="email" type="java.lang.String"></form-property>
		</form-bean>