最近写jsp遇到一系列的低级错误，记录下来权当前车之鉴吧。

错误提示：

SEVERE: Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /jsp04/Zj04_sj_test1_1.jsp(2,1) Page directive must not have multiple occurrences of pageencoding

程序代码如下：

 <%@ page language="java" import="java.util.*" pageEncoding="gbk"%>

 <%@ page language="java" import="jsp04.*" pageEncoding="gbk"%>

  <%@ page import="javax.servlet.jsp.jstl.sql.Result;"%>

 <%

 String path = request.getContextPath();

 String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";

 %>

 <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

 <html>

   <head>

     <base href="<%=basePath%>">

     <title>民意调查</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>

    <br>

     在校大学生是否适合做兼职 <br>

    <br>

    <%

    //构造sql语句，取出调查

    String sql="select * from surveyItem where surveyID=1";

    Object params[]={};

    //获取调查项列表

    Result result=DBHelp.runSelectSql(sql,params);

    Map[] rows=result.getRows();

    //循环访问每一个调查项

    for(int i=0;i<rows.length;i++){

        //得到调查项目的ID

        int id=Integer.parseInt(rows[i].get("id").toString());

        //得到调查项

        String item=rows[i].get("item").toString();

    %>

     <input type="radio" name="radsurver" value="<%=id %>"><%=item %>

    <%

    }

    %><br>

     <input type="submie" name="Submit" value="提交">

     <input type="reset" name="Submit2" value="重置">

   </body>

 </html>
首先，org.apache.jasper.JasperException 中的JasperException
这个异常时jsp引擎解析jsp页面生成servlet时产生的，故错误是在转译阶段，应该是页面的语法有问题，而不是执行阶段出错
然后，检查一下配置，发现页面编码设置了两次，虽然是一样的编码，但还是不被允许的
最后，第二行改为：
　　
<%@ page import="jsp04.*" %>

OK  ！

org.apache.jasper.JasperException: - Page directive must not have multiple occurrences of pageencoding的更多相关文章

  1. org.apache.jasper.JasperException: /WEB-INF/view/../../../common/common1.jsp (line: 7, column: 1) Page directive must not have multiple occurrences of pageencoding

    本文为博主原创,未经允许,不得转载: 先还原错误: org.apache.jasper.JasperException: /WEB-INF/view/../../../../common/common ...

  2. Page directive must not have multiple occurrences of pageencoding

    一个jsp文件中不能同时出现两个 p.p1 { margin: 0.0px 0.0px 0.0px 0.0px; font: 11.0px Monaco; color: #932192 } pageE ...

  3. Page directive: illegal to have multiple occurrences of contentType with different values

    org.apache.jasper.JasperException: /commons/meta.jsp(1,1) PWC5988: Page directive: illegal to have m ...

  4. Struts2报错org.apache.jasper.JasperException: Invalid directive原因

    struts标签书写错误.<s:textfield name="us.username"/>对的<s:textfield name="us.userna ...

  5. 解决报错 Page directive: illegal to have multiple occurrences of contentType with different values (old:

    转自:https://blog.csdn.net/dorothy1224/article/details/78064288

  6. 报错：org.apache.jasper.JasperException: /jsp/head.jsp (line: 1, column: 2) Page directive: illegal to

    上面报错提示的是org.apache.jasper.JasperException: /jsp/head.jsp (line: 1, column: 2) Page directive: illega ...

  7. org.apache.jasper.JasperException: An exception occurred processing JSP page /admin/jiaoshi/daochuEx

    org.apache.jasper.JasperException: An exception occurred processing JSP page /admin/jiaoshi/daochuEx ...

  8. JSP异常之org.apache.jasper.JasperException(转)

    According to TLD or attribute directive in tag file, attribute items does not accep t any expression ...

  9. org.apache.jasper.JasperException: Expecting "jsp:param" standard action with "name" and "value" attributes

      jasper  英 ['dʒæspə]  美 ['dʒæspɚ] 跟读 口语练习 n. 碧玉:墨绿色 n. (Jasper)人名:(德)雅斯佩尔:(西)哈斯佩尔 JasperException 异 ...

随机推荐

  1. Factoextra R Package: Easy Multivariate Data Analyses and Elegant Visualization

    factoextra is an R package making easy to extract and visualize the output of exploratory multivaria ...

  2. BAYESIAN STATISTICS AND CLINICAL TRIAL CONCLUSIONS: WHY THE OPTIMSE STUDY SHOULD BE CONSIDERED POSITIVE（转）

    Statistical approaches to randomised controlled trial analysis The statistical approach used in the ...

  3. javaSE_07Java中类和对象-封装特性

    一.谈谈什么是面向对象的思维 理解面向对象,重点是要思考以下的问题 面向过程 vs 面向对象 Ø 谈谈什么是面向过程的编程思想? Ø 为什么有面向过程还要有面向对象? Ø 谈谈什么是面向对象的编程思想 ...

  4. 看过WWDC2017的闲谈

    2017年6月6日凌晨的138分钟,是属于WWDC2017的. 鉴于时间问题,没有熬夜看,所以早上起来趁着公司不太忙就看了看.整体的内容没有太多变化,依然是苹果的主产品,不过这次的one more t ...

  5. 关于AD9516芯片的硬件设计和FPGA程序编写心得

    最近在做一个项目,其中有涉及时钟芯片AD9516的硬件设计和软件编程,有些使用心得,供大家参考讨论. AD9516,这是一个由ADI公司设计的14路输出时钟发生器,具有亚皮秒级抖动性能,还配有片内集成 ...

  6. 每天一个JS 小demo之韩雪冬轮播图。主要知识点：html，css布局，对于数组和对象的理解和运用

    @charset "utf-8"; /* CSS Document */ ;; } li { list-style: none; } img { border: none; } b ...

  7. JAVAEE学习——struts2_02：结果跳转方式、访问servletAPI方式、获得参数以及封装和练习:添加客户

    一.结果跳转方式 <action name="Demo1Action" class="cn.itheima.a_result.Demo1Action" m ...

  8. 新手如何快速入门Python

    学习任何一门语言都是从入门(1年左右),通过不间断练习达到熟练水准(3到5年),少数人最终能精通语言,成为执牛耳者,他们是金字塔的最顶层.虽然万事开头难,但好的开始是成功的一半,今天这篇文章就来谈谈如 ...

  9. [Leetcode] Binary search--275 H-Index

    Follow up for H-Index: What if the citations array is sorted in ascending order? Could you optimize ...

  10. Log POST Data in Nginx

    先编译Nginx的echo module: ./configure --add-module=./echo-nginx-module-0.54 make make install 可以在github上 ...