Question

当我在JBoss上启动项目时，我遇到了错误No mapping found for HTTP request with URI [/myappname/] in DispatcherServlet with name 'appServlet'。在解决此处描述的另一个问题后出现此问题："No Session found for current thread" after changing access method to the session

在一切正常之前。我正在使用Apache Tiles 2.我正在阅读几个类似的问题，但我找不到可行的解决方案。

这是我没有Hibernate配置的DispatcherServlet Context文件：

<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
         xmlns:tx="http://www.springframework.org/schema/tx"
         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
                    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">

<!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->

<!-- Enables the Spring MVC @Controller programming model -->
<tx:annotation-driven />
<context:annotation-config />
<context:component-scan base-package="finances.webapp" />

<!-- Handles HTTP GET requests for resources by efficiently serving up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />

<beans:bean id="tilesConfigurer" class="org.springframework.web.servlet.view.tiles2.TilesConfigurer">
    <beans:property name="definitions">
        <beans:list>
            <beans:value>/WEB-INF/tiles-definitions.xml</beans:value>
        </beans:list>
    </beans:property>
</beans:bean>

<beans:bean id="viewResolver" class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <beans:property name="viewClass" value="org.springframework.web.servlet.view.tiles2.TilesView" />
</beans:bean>

我的web.xml整个文件：

<?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>

<listener>
    <listener-class>org.springframework.security.web.session.HttpSessionEventPublisher</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>

这是我的IndexController：

@Controller
public class IndexController {

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index(Model model, Principal principal) {
        return "index";
    }
}

此时我的配置有什么问题？

Answer 1

我认为您缺少阅读<mvc:annotation-driven/>和@Controller注释所需的@RequestMapping。您可以详细了解here和here。

Answer 2

解决方案是在DispatcherServlet Context文件中保留两个annotation-driven标记，如下所示：

<annotation-driven />
<tx:annotation-driven />

我没有找到类似的解决方案，所以我将把它留在这里。

Answer 3

在你的spring servlet.xml文件中有这个

xmlns:mvc="http://www.springframework.org/schema/mvc
xmlns:tx="http://www.springframework.org/schema/tx"

和

http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd

和

<mvc:annotation-driven />
<tx:annotation-driven />

在您的控制器类中，使用

 @Controller
 public class IndexController {..}

它有效！

Answer 4

我遇到了同样的例外，正在尝试以上所有解决方案，但没有任何帮助但我确实得到了一个指针，问题是因为该类没有在目标类文件夹中生成，而是由于Maven项目结构不正确导致无法编译Java控制器类。

检查您是否具有以下结构，然后如果在target->class文件夹中生成了类，则只尝试以上建议。

Project
  src
    main
      java
      resources
    test
      java
      resources

Answer 5

确保您的.java文件位于src / main / java而不是src / main / resources下

在DispatcherServlet中找不到带有URI [/ myappname /]的HTTP请求的映射，名称为“appServlet”

5 个答案: