JavaWeb項目中枚舉的應用

如何處理項目中Java類與JSP頁面的之間的枚舉類型轉換？

         當在Java中定義了枚舉類型，在一個實體類中有枚舉類型的字段，有一種處理方式是在實體中添加一個枚舉類型轉換的get方法。JSP頁面中表單提交的字段value值可設爲枚舉的具體值。

枚舉類型

public enum LeaveType {
	LEAVE_OF_ABSENCE,	//事假
	SICK_LEAVE,	//病假
	WINTER_VACATION,	//年假
	MARRAGE_LEAVE,	//婚假
	MATERNITY_LEAVE,	//產假
	TAKE_OFF,	//調休
	OTHER	//其他
}

實體類

</pre><pre>

private LeaveType leaveType;	//請假類別
public LeaveType getLeaveType() {
		return leaveType;
	}
	public void setLeaveType(LeaveType leaveType) {
		this.leaveType = leaveType;
	}
public String getLeaveTypeString(){
		String hint="其他";
		if(leaveType!=null){
			switch(leaveType){
			case LEAVE_OF_ABSENCE:	hint="事假";
			break;
			case SICK_LEAVE:	hint="病假";
			break;
			case WINTER_VACATION:	hint="年假";
			break;
			case MARRAGE_LEAVE:	hint="婚假";
			break;
			case MATERNITY_LEAVE:	hint="產假";
			break;
			case TAKE_OFF:	hint="調休";
			break;
			default:
			}
		}
		return hint;
	}

JSP頁面

提交時

                   <tr>
	            <td>請假類別</td>
	            <td colspan="5">
	             <input type="radio" name="leaveType" value="LEAVE_OF_ABSENCE">事假 
	             <input type="radio" name="leaveType" value="SICK_LEAVE">病假 
	             <input type="radio" name="leaveType" value="WINTER_VACATION">年假 
	             <input type="radio" name="leaveType" value="MARRAGE_LEAVE">婚假 
	             <input type="radio" name="leaveType" value="MATERNITY_LEAVE">產假 
	             <input type="radio" name="leaveType" value="TAKE_OFF">調休 
	             <input type="radio" name="leaveType" value="OTHER" checked>其他
	             </td>
	            </tr>

顯示時

                              <tr>
	                        <td>請假類別</td>
	                        <td colspan="5">
	                        	<div class="">${docTempExp.leaveTypeString}</div>
	                        </td>
	                    </tr>