spring 未找到带有 URI 的 HTTP 请求的映射.... 在 DispatcherServlet 中，名称为
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No mapping found for HTTP request with URI.... in DispatcherServlet with name
提问by erik.c
I checked out nearly every relevant article on stackoverflow already, but I just cant fix my problem.
我已经查看了几乎所有关于 stackoverflow 的相关文章，但我无法解决我的问题。
Here is the code: web.xml:
这是代码：web.xml：
<display-name>Spring3MVC</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring-servlet.xml</param-value>
</context-param>
<listener>
<listener-class> org.springframework.web.context.ContextLoaderListener </listener-class>
</listener>
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<load-on-startup>2</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>*.html</url-pattern>
<url-pattern>/</url-pattern>
<url-pattern>*.htm</url-pattern>
</servlet-mapping>
</web-app>
spring-servlet.xml:
弹簧servlet.xml：
<context:component-scan base-package="com.mycompany.elso" />
<bean class="org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping"/>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
myController:
我的控制器：
public class myController {
@RequestMapping("/hello")
public ModelAndView helloWorld() {
String message = "Hello World, Spring 3.0!";
return new ModelAndView("hello", "message", message);
}
}
Web Pages/index.jsp:
网页/index.jsp：
<html>
<head>
<title>Spring 3.0 MVC Series</title>
</head>
<body>
<a href="hello.html">Say Hello</a>
</body>
</html>
Web Pages/WEB-INF/jsp/hello.jsp:
网页/WEB-INF/jsp/hello.jsp：
<html>
<head>
<title>Spring 3.0 MVC Series: Hello World - ViralPatel.net</title>
</head>
<body>
${message}
</body>
</html>
So when i launch the appication the index.jsp is loaded correctly but when i click on the href to navigate to hello.jsp i got a 404 error and the server log says:
因此，当我启动应用程序时，index.jsp 已正确加载，但是当我单击 href 导航到 hello.jsp 时，出现 404 错误并且服务器日志显示：
No mapping found for HTTP request with URI [/Elso/hello.html] in DispatcherServlet with name 'spring'
I've checked out dozens of articles like that, but I just can't find the mistake, anybody has any idea what could it be?
我已经检查了几十篇这样的文章，但我找不到错误，有人知道它是什么吗？
采纳答案by Nils
You could try and add an @Controllerannotation on top of your myController Class and
try the following url /<webappname>/my/hello.html.
This is because org.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMappingprepends /myto each RequestMapping in the myController class.
您可以尝试@Controller在 myController 类的顶部添加注释并尝试以下 url /<webappname>/my/hello.html。这是因为在 myController 类中的每个 RequestMappingorg.springframework.web.servlet.mvc.support.ControllerClassNameHandlerMapping前面都添加了/my。
回答by Harry
Add
添加
<mvc:default-servlet-handler/>
to spring-servlet.xml
到 spring-servlet.xml
回答by ssk
If you are using
如果您正在使用
<mvc:annotation-driven/>
make sure your spring-servlet.xml has correct
确保你的 spring-servlet.xml 有正确的
<context:component-scan base-package="com.....controller" /> tag.
Basically, you need to include all the packages where you have used the annotation in your java code.
基本上，您需要在 Java 代码中包含使用注释的所有包。
Also, please ensure you do not have duplication of component-scan(for a discovery of beans). If your config XML already contains the element, then any of your Controller classes that are annotated with @ComponentScan(basePackages=... needs to be stripped of the said annotation.
另外，请确保您没有重复的组件扫描（用于发现 bean）。如果您的配置 XML 已经包含该元素，那么任何使用@ComponentScan(basePackages=...进行注释的 Controller 类都需要从所述注释中删除。
回答by ASHISH GUPTA
I solved my issue with : Java Build Path -> JRE system library - > Edit -> Alternate JRE -> -> Finish
我解决了我的问题：Java Build Path -> JRE system library -> Edit -> Alternate JRE -> -> Finish
As it was configured to JDK folder so it was giving Exception
因为它被配置为 JDK 文件夹，所以它给出了 Exception
回答by prayagupd
Make sure
确保
<mvc:annotation-driven/>
<context:component-scan base-package="com.hireartists.web.controllers"/>
points to proper package that contains controllers.
指向包含控制器的正确包。
回答by kishore
Please check your [PROJECT_NAME]\target\classesdirectory to see whether myController.classis generated or not.
请检查您的[PROJECT_NAME]\target\classes目录以查看是否myController.class已生成。
If not, please check all your java source code whether there are any compilation errors.
如果没有，请检查您所有的java源代码是否有任何编译错误。
回答by Udeep Shakya
Try:
尝试：
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
Worked for me!
对我来说有效！
回答by Gaurav Goyal
If you are using Java code based on Spring MVC configuration then enable the DefaultServletHandlerConfigurerin the WebMvcConfigurerAdapterobject.
如果您使用的是基于 Spring MVC 配置的 Java 代码，则DefaultServletHandlerConfigurer在WebMvcConfigurerAdapter对象中启用。
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) {
configurer.enable();
}
回答by Vishal Gupta
Check ur Bean xmlns..
检查你的 Bean xmlns ..
I also had similar problem, but I resolved it by adding mvc xmlns.
我也有类似的问题，但我通过添加 mvc xmlns 解决了它。
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
<context:component-scan base-package="net.viralpatel.spring3.controller" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
</beans>
回答by Nilay Deshmukh
addition of <mvc:annotation-driven/>worked for me.
Add it before line <context:component-scan ............/>
另外<mvc:annotation-driven/>对我有用。在行前添加<context:component-scan ............/>
