Question

我试图点击网址，但我是404错误＆amp;在控制台中我收到警告警告：在名为'SpringRest'的DispatcherServlet中找不到带有URI [/ spring-mvc / hello]的HTTP请求的映射

我不确定web.xml设置。我的代码如下。任何帮助都会被贬低。在此先感谢..

web.xml

<!DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Application</display-name>

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

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


</web-app>

TestController.java

package controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.wocs.services.common.ServiceException;
import com.wocs.services.order.iface.OrderServiceIface;
import com.wocs.services.order.model.hiera.OrderHiera;


@RestController
public class TestController {

    @RequestMapping("/hello")
    public String hello() throws ServiceException
    {
     return "Hello............";    
    }
}

SpringRest-servlet.xml中

<?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.xsd
 http://www.springframework.org/schema/context
 http://www.springframework.org/schema/context/spring-context.xsd
 http://www.springframework.org/schema/mvc
 http://www.springframework.org/schema/mvc/spring-mvc.xsd" >


    <mvc:annotation-driven/>
    <context:annotation-config></context:annotation-config>
    <context:component-scan base-package = "com.wocs" />
    <import resource="classpath:/beanfactory/service-bean-config.xml" />

</beans>

Answer 1

可能是@RequestMapping("/hello")，因为您没有定义用于接收请求的方法类型。

试试这个

@GetMapping(value="/hello", produces = MediaType.APPLICATION_JSON_VALUE)
public ResponseEntity<String> hello() throws ServiceException
{
 return new ResponseEntity<>("Hello............", HttpStatus.OK);    
}

Answer 2

您可以像这样修改您的Controller类，并告诉我它是否有效

@Controller
public class TestController {

     @GetMapping("/hello")
    public String hello() throws ServiceException
    {
     return "Hello............";    
    }
}

如果这不起作用，您可以尝试

@Controller
    public class TestController {

       @RequestMapping(value = "/hello", method = RequestMethod.GET, produces = "application/json")
        public String hello() throws ServiceException
        {
         return "Hello............";    
        }
    }

<强>的web.xml

<web-app 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"
    version="3.1">
    <display-name>Archetype Created Web Application</display-name>

    <servlet>
        <servlet-name>SpringRest</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    </servlet>

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

</web-app>

检查你的web.xml文件和SpringRest-servlet.xml文件是否在 webapp / WEB-INF 文件夹中，同时检查你的控制器java类是否在 src / main / java中而不是 src / main / test ，大多数时候不正确的目录结构会导致问题。如果它仍然不起作用，请告诉我。

Answer 3

将其添加到您的web.xml文件中： -

 <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>/WEB-INF/SpringRest-servlet.xml</param-value>
</context-param>

<listener>
    <listener class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

警告：在DispatcherServlet中找不到带有URI的HTTP请求的映射，名称为“SpringRest”

3 个答案: