错误 HTTP 状态 500 - 绝对 uri：http://java.sun.com/jsp/jstl/core 无法在 web.xml 或 jar 文件中解析答案

【问题标题】：Error HTTP Status 500 - The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files错误 HTTP 状态 500 - 绝对 uri：http://java.sun.com/jsp/jstl/core 无法在 web.xml 或 jar 文件中解析
【发布时间】：2016-03-25 12:55:42
【问题描述】：

我正在尝试开发简单的 java web 应用程序，它显示简单的 hello world，但是当我尝试将 jstl 添加到它时不起作用！

这是我的项目结构 Project Structure

Web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <display-name>My CRUD Application 6</display-name>

</web-app>

index.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
  <head>
    <title>Title</title>
  </head>
  <body>
  <h2>Hello World!</h2>

  </body>
</html>

这里是 Pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>zambroo.crud6</groupId>
    <artifactId>crud6</artifactId>
    <version>1.0-SNAPSHOT</version>

    <dependencies>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>javax.servlet-api</artifactId>
            <version>3.1.0</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>javax.servlet.jsp-api</artifactId>
            <version>2.3.1</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp.jstl</groupId>
            <artifactId>javax.servlet.jsp.jstl-api</artifactId>
            <version>1.2.1</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>org.glassfish.web</groupId>
            <artifactId>javax.servlet.jsp.jstl</artifactId>
            <version>1.2.2</version>
            <scope>compile</scope>
            <exclusions>
                <exclusion>
                    <groupId>javax.servlet</groupId>
                    <artifactId>servlet-api</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.servlet.jsp</groupId>
                    <artifactId>jsp-api</artifactId>
                </exclusion>
                <exclusion>
                    <groupId>javax.servlet.jsp.jstl</groupId>
                    <artifactId>jstl-api</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

    </dependencies>

</project>

这是完整的 Tomcat 日志

18-Dec-2015 23:35:34.062 SEVERE [http-apr-8080-exec-2] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/crudsix] threw exception [The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application] with root cause
 org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jsp/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
	at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:55)
	at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:277)
	at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:75)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2503)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2492)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

18-Dec-2015 23:35:34.553 SEVERE [http-apr-8080-exec-6] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [jsp] in context with path [/crudsix] threw exception [java.lang.ClassNotFoundException: org.apache.jsp.index_jsp] with root cause
 java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:131)
	at org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:62)
	at org.apache.catalina.core.DefaultInstanceManager.newInstance(DefaultInstanceManager.java:129)
	at org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:171)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:217)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:142)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
	at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:518)
	at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1091)
	at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:673)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2503)
	at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2492)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
	at java.lang.Thread.run(Thread.java:745)

错误页面请运行代码段。

<!DOCTYPE html><html><head><title>Apache Tomcat/8.0.28 - Error report</title><style type="text/css">H1 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:22px;} H2 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:16px;} H3 {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;font-size:14px;} BODY {font-family:Tahoma,Arial,sans-serif;color:black;background-color:white;} B {font-family:Tahoma,Arial,sans-serif;color:white;background-color:#525D76;} P {font-family:Tahoma,Arial,sans-serif;background:white;color:black;font-size:12px;}A {color : black;}A.name {color : black;}.line {height: 1px; background-color: #525D76; border: none;}</style> </head><body><h1>HTTP Status 500 - java.lang.ClassNotFoundException: org.apache.jsp.index_jsp</h1><div class="line"></div><p><b>type</b> Exception report</p><p><b>message</b> <u>java.lang.ClassNotFoundException: org.apache.jsp.index_jsp</u></p><p><b>description</b> <u>The server encountered an internal error that prevented it from fulfilling this request.</u></p><p><b>exception</b></p><pre>org.apache.jasper.JasperException: java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
	org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:176)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
</pre><p><b>root cause</b></p><pre>java.lang.ClassNotFoundException: org.apache.jsp.index_jsp
	java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:131)
	org.apache.jasper.servlet.JasperLoader.loadClass(JasperLoader.java:62)
	org.apache.jasper.servlet.JspServletWrapper.getServlet(JspServletWrapper.java:171)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:375)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:396)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:340)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
	org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
</pre><p><b>note</b> <u>The full stack trace of the root cause is available in the Apache Tomcat/8.0.28 logs.</u></p><hr class="line"><h3>Apache Tomcat/8.0.28</h3></body></html>

当我从 index.jsp （即 taglib 行）中删除第一行时，一切正常。我想我已经在 pom.xml 中导入了所有必需的依赖项。

请让我知道我做错了什么？

【问题讨论】：

屏幕截图表明您正在使用 IntelliJ IDEA。这是真的？如果是这样，这反过来又是原因。你的 pom 很好，尽管不必要的复杂。答案中的 pom 非常好，至少在基于 Eclipse 和 Netbeans 的项目中有效。
请看下面的回答

标签： java maven jstl java-ee-7

【解决方案1】：

我同意@Balus C，您正在使用 IntelliJ Idea。我正在使用 Intellij Idea 15

问题在于 POM.XML

我将您的 POM.XML 更改为

添加 - WAR 的打包类型

<groupId>zambroo.crud6</groupId>
<artifactId>crud6</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>

在 Dependencies 节点结束后添加了 BUILD 详细信息

    <build>
        <sourceDirectory>src/main/java</sourceDirectory>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
            </resource>
        </resources>

        <testSourceDirectory>src/test/java/unit</testSourceDirectory>
        <testResources>
            <testResource>
                <directory>src/test/java/resources</directory>
            </testResource>
        </testResources>

        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.3</version>
                <configuration>
                    <warSourceDirectory>web</warSourceDirectory>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

现在对我来说一切正常！！！！！！

希望这可以帮助您 JwB！

【讨论】：

【解决方案2】：

我相信问题出在你的 pom.xml 中。简单来说就是容器在部署的时候不认为JSTL库在，或者有冲突。

您特别直接包含 JSTL，版本 1.2.1，然后还包含它的 glassfish 实现（那么，您想要哪个？）。

你已经排除了 glassfish 提供的几乎所有东西。您的排除项可能存在某些问题。我会一起删除 glassfish 依赖，看看它是否更好玩。

你可以把它们都去掉，然后试试这个：

<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>

【讨论】：

按你说的试过了，但是没用！

【解决方案3】：

试试这个：
- 右键单击您的 Maven 项目；
- 转到“maven”，然后点击“更新项目”。

它对我有用。

【讨论】：