bean:define
定义变量赋值有三种方式Q?br />1。设|value属性，此时id属性定义的变量为字W串Qvalue属性代表这个变量的字符串倹{?br /> (tng)<bean:defind id="userName" value="jing" />
(tng)UserName: <bean:write name="userName"/>
2。同时设|name和property属性。name属性指定一个已l存在的Bean?br />Property属性指定已l存在的Bean的某个属性。id属性定义的变量的值由property属性决定?br /> (tng) <%request.setAttribute("sessionBean",session);%>
(tng)<bean:defind id="theSession" name="sessionBean" property="servletContext"/>
(tng)ServletContext Name: <bean:write name="theSession" property="servletContextName"/>
3。同时设|name和type属性?br /><bean:defind id="loginBean" name="loginBean" type="com.jason.action.LoginBean"/>
<bean:write name="loginBean" property="password"/>
bean:size
用于获得MapQCollection的长?id指定一个Integercd的变?name指定已经存在的mapQcollection或者数l?br /><%
HashMap lines = new HashMap();
lines.put("1","Line 1");
lines.put("2","Line 2");
lines.put("3","Line 3");
request.setAttribute("lines",lines);
%>
<bean:size id="length" name="lines"/>
<bean:write name="length"/>
]]>