java代码段+jsp的基础应用
项目需要大量使用自定义标签，讨厌的<%%>和<%=-%>，加上html+js+jquery
那么好吧，玩吧！ 记下来，给自己个备忘。
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1.先上个基础的，复习一下
? 注意：定义的变量，可以直接在js中使用，当做参数或值。这很重要，即传来的参数就可以在这直接用到js中
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%><%String path = request.getContextPath();String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%><%String name = "mengxianjun";String inputReadonly = "readonly='true'";%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <base href="<%=basePath%>"> <title>My JSP 'index.jsp' starting page</title><meta http-equiv="pragma" content="no-cache"><meta http-equiv="cache-control" content="no-cache"><meta http-equiv="expires" content="0"> <meta http-equiv="keywords" content="keyword1,keyword2,keyword3"><meta http-equiv="description" content="This is my page"><!--<link rel="stylesheet" type="text/css" href="styles.css">--> </head> <body> <input type="text" id="test" value="" onblur="checkInput<%=name%>()" <%=inputReadonly%>/> </body><script type="text/javascript"><%if(name!=null){%> alert('name不为空：'+'<%=name%>');<%}%>var myName = '<%=name%>';document.getElementById('test').value=myName;function checkInput<%=name%>(){alert('input 鼠标离开事件');}</script></html>????
2.自定义标签，怎么使用（PSAreaTag.tag）
<%@ tag pageEncoding="UTF-8" import="java.util.*,com.hanpeng.base.util.SelectManagerRequest" %><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><%@ attribute name="id" required="true" rtexprvalue="true"%><%@ attribute name="name" required="true" rtexprvalue="true"%><%@ attribute name="pid" required="false" rtexprvalue="true"%><%@ attribute name="action" required="false" rtexprvalue="true"%><%@ attribute name="isSelect" required="false" rtexprvalue="true" %> <!-- --><%@ attribute name="isShowHead" required="false" rtexprvalue="true" type="java.lang.Boolean"%> <!-- 是否显示请选择 --><%@ attribute name="headinfo" required="false" rtexprvalue="true" %> <!-- 自定义下拉框默认显示 --><%@ attribute name="sendMethod" required="false" rtexprvalue="true" %> <!-- 调用参数 --><%@ attribute name="disabledstate" required="false" rtexprvalue="true" %> <!-- 可传任意值 如：disabled=true --><%@ attribute name="widlength" required="false" rtexprvalue="true" %> <!-- 设置宽度 --><%@ attribute name="diyClass" required="false" rtexprvalue="true" %> <!-- 自定义样式 --><%List list = null;if(pid == null && sendMethod != null){if("areaLinkMenus".equals(sendMethod)) list = SelectManagerRequest.getAreaProvince(request);/* 省市联动 */if("inOrOutProvince".equals(sendMethod)) list = SelectManagerRequest.getInOrOutProvince(request);/* 省市联动 */}%><select id="<%=id %>" name="<%=name %>" <%=disabledstate %> style="<%=widlength %>"><% if(isShowHead != null && isShowHead == true){ %><% if(headinfo != null){ %><option value="" selected ><%=headinfo %></option><% }else{ %><option value="" selected >请选择</option><% } %><% } %><% if(list != null && !list.isEmpty()){ %><% for (int i=0;i<list.size();i++ ){ java.util.HashMap ot = (java.util.HashMap)list.get(i); String oti = ot.get("val").toString(); String selected = ""; if(oti.equals(isSelect)){ selected = "selected"; }%> <option value="<%=ot.get("val")%>" name="<%=ot.get("key") %>" <%=selected%> ><%=ot.get("key")%></option><% } %><% } %></select><%if(pid != null && !pid.equals("") && action != null && !action.equals("")){ %><script type="text/javascript" src="<%=request.getContextPath() %>/js/doubleCombo/doubleCombo.js"></script><script type="text/javascript">$(document).ready(function(){ new DoubleCombo("<%=pid %>","<%=id %>","<%=action %>",{errorHandler:function(request){alert("网络交互出错");}<% if(isShowHead != null && isShowHead == true){ %><% if(headinfo != null){ %>,head: '<%=headinfo %>'<% }else{ %>,head: '请选择'<% } %><% } %><% if(isSelect != null){ %>,defaultChild: '<%=isSelect %>'<% } %>}).masterComboChanged();});</script><%} %>?
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