一、三種賦值方式

1.value
說明：最直接的賦值方式

value賦值<br/>
<jsp:useBean id="ls" class="model.Employee" scope="session" />
<jsp:setProperty property="id" name="ls" value="1002"/>
<jsp:setProperty property="name" name="ls" value="李四"/>
<jsp:setProperty property="departmentName" name="ls" value="人事部"
 
/>

員工編號：<jsp:getProperty property="id" name="ls"/><br/>
員工姓名：<jsp:getProperty property="name" name="ls" /><br/>
員工部門：<jsp:getProperty property="departmentName" name="ls" />

2.param
說明：當name與屬性名不相同的時候的賦值方式

<jsp:useBean id="employee" class="model.Employee" scope="session"
 
 />
<form action="<%=request.getContextPath()%>/jsp/test_getValue.jsp">
員工編號<input value="" name="id_text" /><br/>
員工姓名<input value="" name="name_text" /><br/>
員工部門<input value="" name="departmentName_text" /><br/>
<input type="submit" value="提交" />
</form
 
>

<jsp:useBean id="employee" class="model.Employee" scope="session" />
param賦值<br/>
<jsp:setProperty property="id" name="employee" param="id_text"/>
<jsp:setProperty property="name" name="employee" param="name_text"/>
<jsp:setProperty property="departmentName" name="employee" param="departmentName_text"/>

員工編號：<jsp:getProperty property="id" name="employee" /><br/>
員工姓名：<jsp:getProperty property="name" name="employee" /><br/>
員工部門：<jsp:getProperty property="departmentName" name="employee" /><hr/>

3.*
說明：賦值所有name與屬性名相同的值

<jsp:useBean id="employee" class="model.Employee" scope="session" />
<form action="<%=request.getContextPath()%>/jsp/test_getValue.jsp">
員工編號<input value="" name="id" /><br/>
員工姓名<input value="" name="name" /><br/>
員工部門<input value="" name="departmentName" /><br/>
<input type="submit" value="提交" />
</form>

<jsp:useBean id="employee" class="model.Employee" scope="session" />
<jsp:setProperty property="*" name="employee"/>

員工編號：<jsp:getProperty property="id" name="employee" /><br/>
員工姓名：<jsp:getProperty property="name" name="employee" /><br/>
員工部門：<jsp:getProperty property="departmentName" name="employee" />

二、include指令和動作元素的區別

要求編碼格式一致，不然會有亂碼
1.include指令被稱作靜態include；include動作元素被稱作動態include
2.include指令不可以傳參，並且會報錯；include動作元素可以
3.屬性不一樣，include指令是file；include動作元素是page、flush
4.include指令檔案包含只生成一個servlet和class；include動作元素生成各自的servlet和class
5.引入時間不一樣，include指令在啟動的時候就引入了；include動作元素在觸發的時候才會引入
6.include指令的兩個檔案共用一個request；include動作元素有兩個request