我绝对是Java和Spring的新手,我想从示例中学习。
我正在使用开箱即用的配置/安装
我试图基于“Spring Template Project”生成一个新项目。然后我选择了“Spring MVC Project”。生成示例项目。之后,在没有修改任何内容的情况下,我尝试通过“Run As”执行de“home.jsp”页面。 Web服务器启动,最后我在控制台选项卡中收到错误。
找不到带有URI [/ myproject /]的HTTP请求的映射 DispatcherServlet,名称为“appServlet”
这些网页中的其他输出:
http://localhost:8080/myproject/WEB-INF/views/home.jsp
http://localhost:8080/myproject
在这里,您可以看到关于我的项目结构的图像(为STS自动生成):
有什么问题?
您可以在此处查看 web.xml 文件的内容:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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">
<!-- The definition of the Root Spring Container shared by all Servlets and Filters -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/root-context.xml</param-value>
</context-param>
<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
</web-app>
root-context.xml 文件包含此内容。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<!-- Root Context: defines shared resources visible to all other web components -->
</beans>
最后 servlet-context.xml 有这个内容。
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory -->
<beans:bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<context:component-scan base-package="com.mycompany.myapp" />
</beans:beans>
有人有想法解决它吗?
答案 0 :(得分:1)
Spring的约定是假设<servlet-name>
的web.xml中的DispatcherServlet
匹配Spring servlet上下文XML文件的开头。将servlet-context.xml
重命名为appServlet-context.xml
,看看是否有帮助。
答案 1 :(得分:0)
WEB-INF下的所有内容都无法从外部访问,MVC框架的目的是在调度到视图之前调用控制器,因此无论如何都不应该直接调用JSP。
你可能没有任何Spring控制器映射到根URL,所以很明显,URL http://localhost:8080/myproject/
没有任何内容。
答案 2 :(得分:0)