jsp里的变量

淡淡的烟草味﹌ 2022-06-12 12:21 148阅读 0赞

1、basePath  
<%                                                                                                                                                                                                               //假设我有个项目drp  
    String path = request.getContextPath();                                                                                                                                           //相当于访问项目路径中的/drp          
    String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";            //相当于http://localhost:8080/drp/  
%>  
<html>  
    <head>  
        <base href="<%=basePath %>">                //相当于项目中的所有路径的起始位置都是http://localhost:8080/drp/，即都是从根路径开始，此时所有相对路径都失去意义。  
        <meta http-equiv="Content-Type" content="text/html; charset=GB18030">  
        <title>添加分销商</title>  
        <link rel="stylesheet" href="style/drp.css">                            //此时的href相当于:http://localhost:8080/drp/style/drp.css  
        <script src="script/client\_validate.js"></script>                    //此时的src相当于:http://localhost:8080/drp/script/client\_validate.js  
        <script type="text/javascript">  
  
2、request.getParameter     
jsp里的java文件中可以通过request.getParameter("id")得到刚页面刚输入的文本内容