jsp---设置JavaBean的范围

设置page范围的JavaBean

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<%@page language="java" contentType="text/html;charset=gb2312"%>
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<!DOCTYPE html>
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<html>
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 <head>
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 <title>设置page的范围</title>
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 </head>
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 <body>
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 <%--通过useBean动作指令调用JavaBean--%>
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 <jsp:useBean id="user" scope="page" class="com.javaweb.ch07.UserBean"></jsp:useBean>
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 <%--根据所有的参数设置JavaBean中属性--%>
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 <jsp:setProperty name="user" property="username" value="page_username"/>
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 <jsp:setProperty name="user" property="password" value="page_password"/>
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 <jsp:forward page="PageJavaBeanDemo2.jsp"/>
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 </body>
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</html>
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<%@page language="java" contentType="text/html;charset=gb2312"%>
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<!DOCTYPE html>
03
<html>
04
 <head>
05
 <title>设置page的范围</title>
06
 </head>
07
 <body>
08
 <%--通过useBean动作指令调用JavaBean--%>
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 <jsp:useBean id="user" scope="page" class="com.javaweb.ch07.UserBean"></jsp:useBean>
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 <%--根据所有的参数设置JavaBean中属性--%>
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 <jsp:getProperty name="user" property="username" />
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 <jsp:getProperty name="user" property="password" />
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 </body>
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</html>
设置request范围的JavaBean
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<%@page language="java" contentType="text/html;charset=gb2312"%>
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<!DOCTYPE html>
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<html>
04
 <head>
05
 <title>设置page的范围</title>
06
 </head>
07
 <body>
08
 <%--通过useBean动作指令调用JavaBean--%>
09
 <jsp:useBean id="user" scope="request" class="com.javaweb.ch07.UserBean"></jsp:useBean>
10
 <%--根据所有的参数设置JavaBean中属性--%>
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 <jsp:setProperty name="user" property="username" value="request_username"/>
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 <jsp:setProperty name="user" property="password" value="request_password"/>
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 <jsp:forward page="PageJavaBeanDemo2.jsp"/>
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 </body>
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</html>
01
<%@page language="java" contentType="text/html;charset=gb2312"%>
02
<!DOCTYPE html>
03
<html>
04
 <head>
05
 <title>设置page的范围</title>
06
 </head>
07
 <body>
08
 <%--通过useBean动作指令调用JavaBean--%>
09
 <jsp:useBean id="user" scope="request" class="com.javaweb.ch07.UserBean"></jsp:useBean>
10
 <%--根据所有的参数设置JavaBean中属性--%>
11
 <jsp:getProperty name="user" property="username" />
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 <jsp:getProperty name="user" property="password" />
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 </body>
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</html>
设置session范围的JavaBean
01
<%@page language="java" contentType="text/html;charset=gb2312"%>
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<!DOCTYPE html>
03
<html>
04
 <head>
05
 <title>设置page的范围</title>
06
 </head>
07
 <body>
08
 <%--通过useBean动作指令调用JavaBean--%>
09
 <jsp:useBean id="user" scope="session" class="com.javaweb.ch07.UserBean"></jsp:useBean>
10
 <%--根据所有的参数设置JavaBean中属性--%>
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 <jsp:setProperty name="user" property="username" value="session_username"/>
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 <jsp:setProperty name="user" property="password" value="session_password"/>
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 <a href="PageJavaBeanDemo2.jsp">跳转到PageJavaBeanDemo2.jsp</a>
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 </body>
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</html>
01
<%@page language="java" contentType="text/html;charset=gb2312"%>
02
<!DOCTYPE html>
03
<html>
04
 <head>
05
 <title>设置page的范围</title>
06
 </head>
07
 <body>
08
 <%--通过useBean动作指令调用JavaBean--%>
09
 <jsp:useBean id="user" scope="session" class="com.javaweb.ch07.UserBean"></jsp:useBean>
10
 <%--根据所有的参数设置JavaBean中属性--%>
11
 <jsp:getProperty name="user" property="username" />
12
 <jsp:getProperty name="user" property="password" />
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 </body>
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</html>
设置application范围的JavaBean
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<%@page language="java" contentType="text/html;char

补充：Web开发 , Jsp ,