JSP Servlet 的 org.apache.jasper.JasperException [重复]
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【中文标题】JSP Servlet 的 org.apache.jasper.JasperException [重复]【英文标题】：org.apache.jasper.JasperException for JSP Servlet [duplicate] 【发布时间】：2021-06-04 05:38:39 【问题描述】：我正在创建我的第一个 JSP servlet，但遇到了一个我不明白的问题。程序很简单
我有两个部分：
一个java+jsp添加新行 显示这些行的 java+jsp我正在加载网址： http://localhost/test/addUf.jsp
我填写字段，单击按钮。数据库插入没问题，我现在被重定向到 http://localhost/test/servletRecord
当它尝试加载此页面时出现我的问题：
05-Mar-2021 12:29:45.046 INFOS [Catalina-utility-1] org.apache.catalina.core.StandardContext.reload Le rechargement de ce contexte est terminé
org.apache.jasper.JasperException: org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:605)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:423)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at servletRecord.doGet(servletRecord.java:71)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:621)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:400)
... 37 more
Caused by: java.lang.IllegalArgumentException: Directive de page : valeur invalide pour import
at org.apache.jasper.compiler.Node$PageDirective.validateImport(Node.java:619)
at org.apache.jasper.compiler.Node$PageDirective.addImport(Node.java:599)
at org.apache.jasper.compiler.Parser.parsePageDirective(Parser.java:366)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:478)
at org.apache.jasper.compiler.Parser.parseFileDirectives(Parser.java:1797)
at org.apache.jasper.compiler.Parser.parse(Parser.java:141)
at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
at org.apache.jasper.compiler.ParserController.parseDirectives(ParserController.java:127)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:202)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:386)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:362)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:346)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:605)
... 38 more
org.apache.jasper.JasperException: org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP
at org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:605)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:423)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:385)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:329)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:712)
at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:459)
at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:384)
at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:312)
at servletRecord.doGet(servletRecord.java:71)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:626)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.jasper.JasperException: Impossible de compiler la classe pour la JSP
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:621)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:400)
... 37 more
Caused by: java.lang.IllegalArgumentException: Directive de page : valeur invalide pour import
at org.apache.jasper.compiler.Node$PageDirective.validateImport(Node.java:619)
at org.apache.jasper.compiler.Node$PageDirective.addImport(Node.java:599)
at org.apache.jasper.compiler.Parser.parsePageDirective(Parser.java:366)
at org.apache.jasper.compiler.Parser.parseDirective(Parser.java:478)
at org.apache.jasper.compiler.Parser.parseFileDirectives(Parser.java:1797)
at org.apache.jasper.compiler.Parser.parse(Parser.java:141)
at org.apache.jasper.compiler.ParserController.doParse(ParserController.java:244)
at org.apache.jasper.compiler.ParserController.parseDirectives(ParserController.java:127)
at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:202)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:386)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:362)
at org.apache.jasper.compiler.Compiler.compile(Compiler.java:346)
at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:605)
... 38 more
这是我的文件： addUF.java
import javax.servlet.*;
import javax.servlet.http.*;
import javax.sql.*;
import java.sql.*;
import java.util.*;
import com.microsoft.sqlserver.jdbc.*;
public class addUf extends HttpServlet
public void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException
response.setContentType("text/html");
PrintWriter out = response.getWriter();
Connection connBDUtil = null;
String id_config = request.getParameter("id_config").toString();
String uf_code = request.getParameter("uf_code").toString();
String libelle = request.getParameter("libelle").toString();
String nbLits = request.getParameter("nbLits").toString();
String actif = "1";
if(request.getParameter("actif")== null) actif = "0";
Statement stmt;
try SQLServerDataSource ds_BD_util = new SQLServerDataSource();
ds_BD_util.setUser(db.UserBD_util);
ds_BD_util.setPassword(db.PasswordBD_util);
ds_BD_util.setServerName(db.ServerNameBD_util);
ds_BD_util.setPortNumber(db.PortNumberBD_util);
ds_BD_util.setDatabaseName(db.DatabaseNameBD_util);
connBDUtil = ds_BD_util.getConnection();
System.out.println("Connected to the database");
//test de validité
String sqlText = "INSERT INTO LitsConfig (id_config, uf_code, libelle, nbLits, actif) " +
"VALUES ('" + id_config + "', '" + uf_code + "', '" + libelle + "', '" + nbLits + "', '" + actif +"')" ;
System.out.println("SQL : " + sqlText);
stmt = connBDUtil.createStatement();
int i = stmt.executeUpdate(sqlText);
System.out.println("query" + sqlText);
if(i>0)
response.sendRedirect("servletRecord");
connBDUtil.close();
System.out.println("Disconnected from database");
catch (Exception e)
e.printStackTrace();
添加UF.jsp
<html>
<head></head>
<body>
<form name="userform" method="post" action="addUf">
<br><br><br>
<table align="center" style="background-color:#EDF6EA;border:1px solid #000000;">
<tr><td colspan=2 style="font-weight:bold;" align="center">Ajouter une UF</td></tr>
<tr><td colspan=2 align="center" ></td></tr>
<tr>
<td style="font-weight:bold;">Id config</td>
<td><input type="text" name="id_config" value=""></td>
</tr
<tr>
<td style="font-weight:bold;">UF</td>
<td><input type="text" name="uf_code" value=""></td>
</tr>
<tr>
<td style="font-weight:bold;">Libellé</td>
<td><input type="text" name="libelle" value=""></td>
</tr>
<tr>
<td style="font-weight:bold;">Nombre de lits</td>
<td><input type="text" name="nbLits" value=""></td>
</tr>
<tr>
<td style="font-weight:bold;">actif</td>
<td><input type="checkbox" name="actif" value=""></td>
</tr>
<tr>
<td></td>
<td><input type="submit" name="Submit" value="Ajouter" style="background-color:#49743D;font-weight:bold;color:#ffffff;"></td>
</tr>
<tr><td colspan=2 align="center" ></td></tr>
</table>
</form>
</body>
</html>
servletRecord.java
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.sql.*;
import java.sql.*;
import java.util.*;
import com.microsoft.sqlserver.jdbc.*;
public class servletRecord extends HttpServlet
public void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException,IOException
response.setContentType("text/html");
PrintWriter out = response.getWriter();
Connection connBDUtil = null;
Statement stmt;
try
SQLServerDataSource ds_BD_util = new SQLServerDataSource();
ds_BD_util.setUser(db.UserBD_util);
ds_BD_util.setPassword(db.PasswordBD_util);
ds_BD_util.setServerName(db.ServerNameBD_util);
ds_BD_util.setPortNumber(db.PortNumberBD_util);
ds_BD_util.setDatabaseName(db.DatabaseNameBD_util);
connBDUtil = ds_BD_util.getConnection();
System.out.println("Connected to the database");
ArrayList arrayConfig = null;
ArrayList litsConfigList = new ArrayList();
String sqlText = "SELECT * FROM LitsConfig ORDER BY libelle";
System.out.println("sqlText " + sqlText);
stmt = connBDUtil.createStatement();
ResultSet rs = stmt.executeQuery(sqlText);
while(rs.next())
arrayConfig = new ArrayList();
arrayConfig.add(rs.getInt(1)); // Id Config
arrayConfig.add(rs.getString(2)); // Ufs
arrayConfig.add(rs.getString(3)); // Libellé
arrayConfig.add(rs.getInt(4)); // Nb Lits
arrayConfig.add(rs.getInt(5)); // Actif
System.out.println("arrayConfig :: "+arrayConfig);
litsConfigList.add(arrayConfig);
request.setAttribute("litsConfigList", litsConfigList);
String nextJSP = "/home.jsp";
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher(nextJSP);
dispatcher.forward(request,response);
ConnEasily.close();
connBDUtil.close();
System.out.println("Disconnected from database");
catch (Exception e)
e.printStackTrace();
home.jsp
<%@ page language="java" import="java.util.*;"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE>Occupation des lits de pédiatrie</TITLE>
<script language="javascript">
function editrecord(id)
window.location.href="editServlet/"+id;
function deleteRecord(id)
window.location.href="deleteUser/"+id;
</script>
</HEAD>
<BODY>
<br>
<table align="center">
</table>
<br>
<table align="center" style="background-color:#EDF6EA;border:1px solid #000000;">
<tr><td colspan=9 align="center" ></td></tr>
<tr><td colspan=9 align="center"><a href="addUf.jsp" style="font-weight:bold;color:#cc0000;">Ajouter une configuration d'UF</a></td></tr>
<tr><td colspan=9 align="center" ></td></tr>
<tr style="background-color:#7BA88B;font-weight:bold;">
<td>Config Id</td>
<td>Codes UF</td>
<td>Libellé</td>
<td>Nombre de lits</td>
<td>Actif</td>
<td>Edit</td>
<td>Delete</td>
</tr>
<%
String bgcolor="";
int count=0;
List viewList = new ArrayList();
Iterator viewitrLitsConfig;
if(request.getAttribute("litsConfigList")!=null && request.getAttribute("litsConfigList")!="")
List litsConfigList = (ArrayList)request.getAttribute("litsConfigList");
Iterator itrLitsConfig = litsConfigList.iterator();
while(itrLitsConfig.hasNext())
if(count%2==0)
bgcolor = "#C8E2D1";
else
bgcolor = "#EAF8EF";
viewList = (ArrayList)itrLitsConfig.next();
int id = Integer.parseInt(viewList.get(0).toString());
viewitrLitsConfig = viewList.iterator();
%>
<tr style="background-color:<%=bgcolor%>;">
<%
while(viewitrLitsConfig.hasNext())
%>
<td><%=viewitrLitsConfig.next()%></td>
<%
count++;
%>
<td><input type="button" name="edit" value="Edit" style="background-color:#49743D;font-weight:bold;color:#ffffff;" onclick="editRecord(<%=id%>);" ></td>
<td><input type="button" name="delete" style="background-color:#ff0000;font-weight:bold;;color:#ffffff;" value="Delete" onclick="deleteRecord(<%=id%>);"></td>
</tr>
<%
if(count==0)
%>
<tr><td colspan="9" align="center"> </td></tr>
<tr><td colspan="9" align="center">Aucun enregistrement disponible</td></tr>
<%
%>
<tr><td colspan=9 align="center" ></td></tr>
</table>
</BODY>
</HTML>
web.xml
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
version="2.5">
<display-name>Test Config</display-name>
<description>Test Config</description>
<servlet>
<servlet-name>servletrecord</servlet-name>
<servlet-class>servletRecord</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>servletrecord</servlet-name>
<url-pattern>/servletRecord</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>addUf</servlet-name>
<servlet-class>addUf</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>addUf</servlet-name>
<url-pattern>/addUf</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>editservlet</servlet-name>
<servlet-class>userServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>editservlet</servlet-name>
<url-pattern>/editServlet/*</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>edituser</servlet-name>
<servlet-class>editUser</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>edituser</servlet-name>
<url-pattern>/editUser</url-pattern>
</servlet-mapping>
<servlet>
<servlet-name>deleteuser</servlet-name>
<servlet-class>deleteUser</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>deleteuser</servlet-name>
<url-pattern>/deleteUser/*</url-pattern>
</servlet-mapping>
</web-app>
我错过了什么？
我的库是： ojdbc6.jar servlet-api.jar sqljdbc.jar
感谢您的帮助！ 雄猫 9 / Java 8
【问题讨论】：
您的page 指令（import 属性）中有语法错误。检查this answer 的语法是否正确。 BTW 脚本<% ... %> 应该替换为EL expressions 和JSTL。所有的准备工作都应该在servletRecord中完成（奇怪的名字，Java中的类名应该以大写字母开头）。
谢谢，它成功了。关于类名的大写，我同意，这是来自教程，我没有重写它。我阅读了你关于 EL 表达式和 JSTL 的链接，但我没有掌握背后的概念。你能告诉我如何将我的部分代码翻译成 JSTL 以便我理解吗？
【参考方案1】：
消息是由import="java.util.*;" 属性引起的，它应该是import="java.util.*"（参见this answer）。
但是，从 JSP 2.0 开始，不鼓励使用脚本 <% … %>，而是使用 EL 表达式 $ … 和 JSTL 标记。假设你有一个像这样的JavaBean 类：
public class LitsConfig
private int id;
private String codeUf;
private String libelle;
private int noLits;
private boolean actif;
// getters and setters
...
为了表示您的行数据并假设您的 servlet 将类型为 List<LitsConfig> 的名为 "litsConfig" 的属性放入请求上下文中，您可以像这样简化您的 JSP 页面：
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here</title>
<style type="text/css">
table.main
width: 600px;
margin: auto;
background-color: #EDF6EA;
border: 1px solid #000000;
tr.header
background-color: #7BA88B;
font-weight: bold;
tr.data:nth-child(odd)
background-color: #C8E2D1;
tr.data:nth-child(even)
background-color: #EAF8EF;
</style>
</head>
<body>
<table class="main">
<tr class="header">
<td>Config Id</td>
<td>Codes UF</td>
<td>Libellé</td>
<td>Nombre de lits</td>
<td>Actif</td>
<td>Edit</td>
<td>Delete</td>
</tr>
<!--
Iterates over each element of the request attribute `litsConfig`.
The element is available as the page attribute `lit`.
-->
<c:forEach items="$litsConfig" var="lit">
<tr class="data">
<td>$lit.id</td>
<td>$lit.codeUf</td>
<td>$lit.libelle</td>
<td>$lit.noLits</td>
<td>$lit.actif ? "oui" : "non" </td>
<td><a href="$contextPath/editServlet/$lit.id">Éditer</a></td>
<td><a href="$contextPath/deleteUser/$lit.id">Effacer</a></td>
</tr>
</c:forEach>
<!-- Adds a row if `litsConfig` is empty (or not defined) -->
<c:if test="$fn:length(litsConfig) == 0">
<tr>
<td colspan="9" align="center">Aucun enregistrement disponible</td>
</tr>
</c:if>
</table>
</body>
</html>
备注：您需要将taglibs-standard-spec.jar 和taglibs-standard-impl.jar 添加到您的依赖项中。
【讨论】：
非常感谢 :) 如果我做对了，这个想法是使用 java 对象来模拟我的表而不是通用数组？ 主要思想是完全替换 JSP 中的 Java 代码（参见 [this answer]）。使用JavaBeans 只是让JSP 更具可读性的一种方式。以上是关于JSP Servlet 的 org.apache.jasper.JasperException [重复]的主要内容，如果未能解决你的问题，请参考以下文章
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