Spring MVC 4.0.1請求映射不起作用

Question

我是Spring MVC的新手，嘗試了各種示例，但是沒有用，我使用了NetBEan IDE 8.2 Spring 4.0.1 Java 1.8和Apache Tomcat 8.0.27

這是我的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>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>
<session-config>
    <session-timeout>
        30
    </session-timeout>
</session-config>
</web-app>

我的Dispath-servelet.xml

    <?xml version='1.0' encoding='UTF-8' ?>
    <!-- was: <?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans 
       http://www.springframework.org/schema/beans/spring-beans-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">


    <mvc:annotation-driven />
    <context:component-scan base-package="com.controllers" />


    <bean id="viewResolver" 
      class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass" 
      value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
    </bean>


</beans>

和控制器

package com.controllers.admin;

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

@Controller
@RequestMapping("/admin")
public class AdminController {

    public AdminController(){
    }

    @RequestMapping(value = "/", method = RequestMethod.GET)
    public String index(){

     return "hello";
    }


    @RequestMapping(value = "/dashbord", method = RequestMethod.GET)
    public String dashbord (){

        return "dashbord";
    }
}

當我導航到http：// localhost：8084 / PropertySales / admin時說404請求的資源不可用。

我檢查發現的服務器日志

WARNING [http-nio-8084-exec-202] org.springframework.web.servlet.DispatcherServlet.noHandlerFound No mapping found for HTTP request with URI [/PropertySales/admin/dashbord] in DispatcherServlet with name 'dispatcher'

我的代碼有什么錯。 有人可以幫忙嗎

Answer 1

在web.xml ，沒有提供dispath-servelet.xml作為contextConfigLocation ，因此如下所示添加它：

<context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/dispath-servelet.xml</param-value>
</context-param>

Answer 2

我認為您應該在更改名稱后將它們添加到調度程序servlet中：

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/servlet-properties.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

Answer 3

您可以嘗試將servlet映射的web.xml條目修改為以下內容並檢查嗎？

<servlet-mapping>
    <servlet-name>dispatcher</servlet-name>
    <url-pattern>*htm</url-pattern>
</servlet-mapping>

然后使用http：// localhost：8084 / PropertySales / admin / dashbord.htm嗎？

Answer 4

我自己找到解決方案

問題是“ applicationContext.xml”文件中配置在“ dispatch-servlet.xml”中的文件應包含在“ applicationContext.xml”中

這是我的applicationContext.xml

<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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">

    <mvc:annotation-driven />
    <context:component-scan base-package="com.controllers" />


    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
    </bean>
</beans>

還有Dispatch-servlet.xml

<?xml version='1.0' encoding='UTF-8' ?>
<!-- was: <?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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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">


    <mvc:annotation-driven />
    <context:component-scan base-package="com.controllers" />


    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
    <property name="prefix" value="/WEB-INF/views/" />
    <property name="suffix" value=".jsp" />
    </bean>


</beans>