Question

我是春季发展的新手。我正在尝试使helloworld应用程序正常工作。但/ welcome路径导致404页面。

这是我的配置：

的web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
    <display-name>Archetype Created Web Application</display-name>

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

    <servlet>
        <servlet-name>Spring</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Spring</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>
</web-app>

弹簧servlet.xml中

<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:context="http://www.springframework.org/schema/context"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="
        http://www.springframework.org/schema/beans     
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/mvc 
        http://www.springframework.org/schema/mvc/spring-mvc.xsd
        http://www.springframework.org/schema/context 
        http://www.springframework.org/schema/context/spring-context.xsd">

    <mvc:annotation-driven/>
    <context:component-scan base-package="controller" /> 

    <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/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

SpringController.java

package controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

@Controller
public class SpringController {
    @RequestMapping("/welcome")
    public ModelAndView helloWorld() 
    {
        return new ModelAndView("welcome"); 
    }
}

在控制台输出中，我可以看到：

INFOS: Mapped "{[/welcome],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto public org.springframework.web.servlet.ModelAndView controller.SpringController.helloWorld()

但是当我去＆＃34; http://localhost:8080/test/welcome＆＃34;我仍有404错误

你能帮我吗？

Answer 1

问题可能是您的web.xml中的网址匹配问题

请更改<servlet-mapping>网址格式。试试这个：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0">
    <display-name>Archetype Created Web Application</display-name>

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

    <servlet>
        <servlet-name>Spring</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>Spring</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>/WEB-INF/Spring-servlet.xml</param-value>
    </context-param>
</web-app>

您会注意到url-pattern现在只是“/”。这会将任何传入的请求转发给您的应用程序到调度程序servlet，它将转发给相应的控制器。 <context-param>将Spring-servlet.xml配置文件加载到应用程序上下文中。确保Spring-serlvet.xml文件位于WEB-INF文件夹中。

您的WEB-INF / jsp /文件夹中也应该有一个名为“welcome.jsp”的视图 - 因为这是你的SpringController在helloWorld（）

中返回的内容

Spring Controller映射错误

1 个答案: