spring MVC,tomcat url 404错误

Question

我对spring MVC/Tomcat有问题，更具体地说，当我试图执行以下Url时：http://localhost:8080/helloweb/index.html

警告：在名为“HelloWeb”的DispatcherServlet中找不到URI为[/HelloWeb/index.html]的HTTP请求的映射

helloweb-servlet.xml：

<context:component-scan base-package="pl.solsoft.web"/>

<bean id="freemarkerConfig" class="org.springframework.web.servlet.view.freemarker.FreeMarkerConfigurer">
    <property name="templateLoaderPath" value="/WEB-INF/pages"/>
        </bean>
<bean id="viewResolver" class="org.springframework.web.servlet.view.freemarker.FreeMarkerViewResolver">
    <property name="cache" value="true"/>
    <property name="prefix" value=""/>
    <property name="suffix" value=".ftl"/>
</bean>
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="prefix" value="/WEB-INF/pages/"/>
    <property name="suffix" value=".jsp"/>
</bean>

null

StudentController：

@Controller
public class StudentController{
private static List<User> userList=new ArrayList<User>();
static {
    userList.add(new User("Bill", "Gates"));
    userList.add(new User("Kasia", "K"));
}
@RequestMapping(value = "/index", method = RequestMethod.GET)
public String index (@ModelAttribute("model") ModelMap model){
    model.addAttribute("userList", userList);
    return "index";
}
@RequestMapping(value = "/add", method = RequestMethod.POST)
public String add(@ModelAttribute("user") User user){
    if (null != user && null != user.getName()
            && null != user.getLastName() && !user.getName().isEmpty()
            && !user.getLastName().isEmpty()) {
        synchronized (userList) {
            userList.add(user);
        }
    }
    return "redirect:index.html";
}
}

web.xml：

<display-name>HW</display-name>
<welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.jsp</welcome-file>
</welcome-file-list>

<servlet>
    <servlet-name>HelloWeb</servlet-name>
    <servlet-class> org.springframework.web.servlet.DispatcherServlet </servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>HelloWeb</servlet-name>
    <url-pattern>*.html</url-pattern>
</servlet-mapping>

null

感谢您提供的所有提示

Answer 1

在web.xml中，您已经将DispatcherServlet映射为处理与*.html匹配的请求。但您的StudentController未映射为处理此类请求。

修改@RequestMapping中的值以包含.html扩展名。

@RequestMapping(value = "/index.html", method = RequestMethod.GET)
public String index (@ModelAttribute("model") ModelMap model){
   ......
   return "index";
}

@RequestMapping(value = "/add.html", method = RequestMethod.POST)
public String add(@ModelAttribute("user") User user){
   .....
   return "redirect:index.html";
}

现在尝试访问您的页面，方法是：http://localhost:8080/helloweb/index.html

-------编辑-----------------------------

验证控制器正在由spring初始化。为此，创建一个无参数构造函数，并尝试将一些内容打印到控制台。

@Controller
public class StudentController{

       public StudentController(){
              System.out.println("Hey, I'm in StudentController");
       }

}

Answer 2

如果您将.html添加到RequestMappings中，例如@requestmapping(value=“/index.html”）