Spring MVC应用程序出现404错误

Question

My Spring release is 5.x and tomcat version is 8.5, so according to introduction, they will support the web application running without web.xml, but I got 404 error, see my project structure below: 我的Spring版本是5.x，tomcat版本是8.5，因此根据介绍，它们将支持不带web.xml的Web应用程序运行，但是出现404错误，请参见下面的项目结构：

I use this url to access my application, but got 404 error: 我使用此URL访问我的应用程序，但收到404错误：
http://localhost:8080/SpringMVC/ HTTP：//本地主机：8080 /用SpringMVC /

see my code below: 请参阅下面的代码：

RootConfig.java: RootConfig.java：

package spittr.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ComponentScan.Filter;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.FilterType;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;

@Configuration
@ComponentScan(basePackages= {"spitter"},
               excludeFilters= {@Filter(type=FilterType.ANNOTATION, value=EnableWebMvc.class)}
              )
public class RootConfig {

}

WebConfig.java: WebConfig.java：

package spittr.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.ViewResolver;
import org.springframework.web.servlet.config.annotation.DefaultServletHandlerConfigurer;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
import org.springframework.web.servlet.view.InternalResourceViewResolver;


@Configuration
@EnableWebMvc
@ComponentScan("spittr.web")
public class WebConfig implements WebMvcConfigurer{

    public ViewResolver viewResolver()
    {
        InternalResourceViewResolver resolver = new InternalResourceViewResolver();
        resolver.setPrefix("/WEB-INF/views/");
        resolver.setSuffix(".jsp");
        resolver.setExposeContextBeansAsAttributes(true);
        return resolver;
    }

    @Override
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) 
    {
        configurer.enable();
    }
}

SpittrWebAppInitializer.java: SpittrWebAppInitializer.java：

package spittr.config;

import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;

public class SpittrWebAppInitializer extends AbstractAnnotationConfigDispatcherServletInitializer {

    @Override
    protected Class<?>[] getRootConfigClasses() {
        return new Class<?>[] {RootConfig.class}; 
    }

    @Override
    protected Class<?>[] getServletConfigClasses() {
        return new Class<?>[] {WebConfig.class};
    }

    @Override
    protected String[] getServletMappings() {
        return new String[] {"/"};
    }

}

HomeController.java: HomeController.java：

package spittr.web;

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

@Controller
public class HomeController {
    @RequestMapping(value="/",method=RequestMethod.GET)
    public String home()
    {
        System.out.println("test");
        return "home";
    }
}

home.jsp: 针对home.jsp：

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>this is the Home Jsp page</title>
</head>
<body>
    <h1>Hello, Spring MVC!</h1>
</body>
</html>

from the Eclipse console, I can see output "test" that means spring context find out the controller, but seems it cannot find the jsp page, I don't know the reason, can someone tell me what's wrong with my code? 从Eclipse控制台中，我可以看到输出“ test”，这意味着spring上下文可以找到控制器，但是似乎找不到jsp页面，我不知道原因，有人可以告诉我我的代码有什么问题吗？

Answer 1

Try adding @Bean annotation on top of WebConfig#viewResolver() method. 尝试在WebConfig#viewResolver()方法的顶部添加@Bean批注。 So, the Spring Container manage your method as bean and your custom configuration will probably work. 因此，Spring Container将您的方法作为Bean管理，您的自定义配置可能会起作用。

@Bean
public ViewResolver viewResolver(){}

Indicates that a method produces a bean to be managed by the Spring container. 指示方法产生一个由Spring容器管理的bean。

Spring MVC应用程序出现404错误

问题描述

1 个解决方案

解决方案1
1 已采纳 2017-10-28 12:04:49

Spring MVC应用程序出现404错误

问题描述

1 个解决方案

解决方案1 1 已采纳 2017-10-28 12:04:49

解决方案1
1 已采纳 2017-10-28 12:04:49