jquery 未找到标签页

Question

我有 3 个 jquery 选项卡。当我单击主页选项卡时，firefox 控制台显示 "GET http://localhost:8080/MedAI/jsp/homeTab.jsp [404 Not Found]"。
为什么？这是来自 index.jsp

的代码片段

<div id="tabs">
<ul>
    <li><a href="jsp/homeTab.jsp">Home</a></li>
    <li><a href="<c:url value='jsp/geneNetworkTab' />">Gene Network</a></li>
    <li><a href="<c:url value='jsp/diseaseNetworkTab' />">Disease Network</a></li>
</ul>  
</div>
    <script type="text/javascript">
        $(document).ready(function() {
        $('#tabs')
            .tabs()
        });    
    </script>

我的 homeTab.jsp 存在于 MedAI/WebPages/Web-INF/jsp/homeTab.jsp 的 NetBeans 项目中。它只显示 "hello world".

我尝试使用 jstl 方法和直接 url 方法，无论是否使用 .jsp 扩展名。什么都不管用。为什么找不到它？

调度员-servlet.xml

<?xml version='1.0' encoding='UTF-8' ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>

    <!--
    Most controllers will use the ControllerClassNameHandlerMapping above, but
    for the index controller we are using ParameterizableViewController, so we must
    define an explicit mapping for it.
    -->
    <bean id="urlMapping" class="org.springframework.web.servlet.handler.SimpleUrlHandlerMapping">
        <property name="mappings">
            <props>
                <prop key="index.htm">indexController</prop>
            </props>
        </property>
    </bean>

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="/WEB-INF/jsp/"
          p:suffix=".jsp" />

    <!--
    The index controller.
    -->
    <bean name="indexController"
          class="org.springframework.web.servlet.mvc.ParameterizableViewController"
          p:viewName="index" />

</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" 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">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>redirect.jsp</welcome-file>
    </welcome-file-list>
</web-app>

Answer 1

将 jsp/homeTab.jsp <---- 这个目录放在你的 WebPages 文件夹中而不是 Web-INF.

您的 jsp 应该位于 WebContent 的根文件夹中，而不是 Web-INF。 Web-INF 是编译 Java 类的位置，将包含您的 lib 和您的项目描述符 web.xml.

Answer 2

我花了好几天的时间研究和反复试验，但我终于明白了。我讨厌 SPRING！这是我使用过的最令人困惑的非直观框架。

这是我的 NetBeans 项目结构：

web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="3.1" 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">
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>2</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>*.htm</url-pattern>
    </servlet-mapping>
    <session-config>
        <session-timeout>
            30
        </session-timeout>
    </session-config>
    <welcome-file-list>
        <welcome-file>index.jsp</welcome-file>
    </welcome-file-list>
</web-app>

我用 url-pattern 胡乱尝试让简单的“/”工作，但不能。不断收到 404 未找到错误。

请注意 index.jsp 是 WEB-INF 之外唯一的 jsp。那就是你在浏览器中输入“http://localhost:8084/MedAI/”时的着陆点。

它落在那里是因为

<welcome-file>index.jsp</welcome-file>

调度员-servlet.xml

<?xml version='1.0' encoding='UTF-8' ?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
       http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
       http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    <bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
    <context:annotation-config />
    <context:component-scan base-package="com.tekknow.medai" />
    <mvc:annotation-driven />

    <bean id="viewResolver"
          class="org.springframework.web.servlet.view.InternalResourceViewResolver"
          p:prefix="/WEB-INF/jsp/"
          p:suffix=".jsp" />
</beans>

由于 web.xml url 模式，任何以 *.htm 结尾的 url 都会被发送到调度程序 servlet。然后 viewResolver bean 说要在 WEB-INF/jsp 文件夹中查找名称（减去 .htm 扩展名并加上 .jsp 扩展名）。

index.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
    "http://www.w3.org/TR/html4/loose.dtd">

<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>MedAI - Medical Artifical Intelligence</title>
        <script type="text/javascript" src="resources/js/jquery.js"></script>     
        <script type="text/javascript" src="resources/js/jquery-ui.js"></script>  
</script>        
        <link href="resources/css/jquery-ui.css" rel="stylesheet" type="text/css" />
        <link href="resources/css/medai.css" rel="stylesheet"  type="text/css" />
    </head>
    <body>
    <div class="header">
        <h1>MedAI</h1>
        <span class="version">V 1.0.0</span>            
    </div>

    <div id="tabs">
    <ul>
        <li><a href="home.htm">Home</a></li>
        <li><a href="GeneNetwork.htm">Gene Network</a></li>
        <li><a href="DiseaseNetwork.htm">Disease Network</a></li>
    </ul>  
    </div>
        <script type="text/javascript">
            $(document).ready(function() {
            $('#tabs')
                .tabs()
            });    
        </script>    
    </body>
</html>

请注意 url 以 .htm 结尾。正如我之前所说，我尝试不使用 .htm 并在 web.xml url 模式中使用“/”，但它不起作用。

home.htm、GeneNetwork.htm 和 DiseaseNetwork.htm 每个都有自己的控制器，类似于：

HomeController.java

package com.tekknow.medai.controller;

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;

@Controller
@RequestMapping("/home.htm")
public class HomeController {

    @RequestMapping(method = RequestMethod.GET)
    public String handleRequest(ModelMap modelMap) {
        System.out.println("HomeController.handleRequest");
        return "home";
    }
}

这会将其发送到 home.jsp 视图。

home.jsp

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <title>Home</title>
    </head>
    <body>
        <h1>MedAI Home</h1>
    </body>
</html>

然后在几十个小时后终于...

希望这会节省你们所有人浪费的时间！

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