jsp给输入框赋值的方法:1、通过value直接赋值;2、通过param方式给输入框赋值,是当name与属性名不相同时的赋值方式;3、通过“*”方式赋值,该方式是赋值所有name与属性名相同的值。
本篇文章将介绍几种JSP页面赋值给input方法,供大家作为参考。
1.value
说明:最直接的赋值方式
value赋值<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"/> 员工编号:<jsp:getProperty property="id" name="ls"/><br/> 员工姓名:<jsp:getProperty property="name" name="ls" /><br/> 员工部门:<jsp:getProperty property="departmentName" name="ls" />
2.param
说明:当name与属性名不相同的时候的赋值方式
<jsp:useBean id="employee" class="model.Employee" scope="session" /> <form action="<%=request.getContextPath()%>/jsp/test_getValue.jsp"> 员工编号<input value="" name="id_text" /><br/> 员工姓名<input value="" name="name_text" /><br/> 员工部门<input value="" name="departmentName_text" /><br/> <input type="submit" value="提交" /> </form>
<jsp:useBean id="employee" class="model.Employee" scope="session" /> param赋值<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"/> 员工编号:<jsp:getProperty property="id" name="employee" /><br/> 员工姓名:<jsp:getProperty property="name" name="employee" /><br/> 员工部门:<jsp:getProperty property="departmentName" name="employee" /><hr/>
3.*
说明:赋值所有name与属性名相同的值
<jsp:useBean id="employee" class="model.Employee" scope="session" /> <form action="<%=request.getContextPath()%>/jsp/test_getValue.jsp"> 员工编号<input value="" name="id" /><br/> 员工姓名<input value="" name="name" /><br/> 员工部门<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"/> 员工编号:<jsp:getProperty property="id" name="employee" /><br/> 员工姓名:<jsp:getProperty property="name" name="employee" /><br/> 员工部门:<jsp:getProperty property="departmentName" name="employee" />
include指令和动作元素的区别
要求编码格式一致,不然会有乱码
1.include指令被称作静态include;include动作元素被称作动态include
2.include指令不可以传参,并且会报错;include动作元素可以
3.属性不一样,include指令是file;include动作元素是page、flush
4.include指令文件包含只生成一个servlet和class;include动作元素生成各自的servlet和class
5.引入时间不一样,include指令在启动的时候就引入了;include动作元素在触发的时候才会引入
6.include指令的两个文件共用一个request;include动作元素有两个reques
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