spring web-mvc 4 java config不起作用

时间:2015-02-14 10:51:55

标签: java spring-mvc spring-java-config tomcat8

我试图在没有xml配置的情况下运行基本的spring-4 web-mvc应用程序。我看过弹簧文档和示例,但它对我没用。 我的控制器:

package com.nikolay.exam.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class HomeController {

@RequestMapping(value = "/home", method = RequestMethod.GET)
@ResponseBody
public String home() {
    return "Hello world!";
}
}

的AppConfig:

package com.nikolay.exam.config;

import org.springframework.context.annotation.Configuration;

@Configuration
    public class AppConfig {
}

WebConfig:

package com.nikolay.exam.config;
import com.nikolay.exam.controller.HomeController;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.EnableWebMvc;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
@EnableWebMvc
public class WebConfig extends WebMvcConfigurerAdapter {

@Bean
public HomeController homeController() {
        return new HomeController();
    }
}

WebInitializer:

package com.nikolay.exam.config;

import org.springframework.web.WebApplicationInitializer;
import org.springframework.web.context.ContextLoaderListener;
import org.springframework.web.context.support.AnnotationConfigWebApplicationContext;
import org.springframework.web.servlet.DispatcherServlet;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRegistration;
public class WebInitializer implements WebApplicationInitializer {
    @Override
    public void onStartup(ServletContext servletContext) throws ServletException {
        AnnotationConfigWebApplicationContext root = new AnnotationConfigWebApplicationContext();
        root.setConfigLocation("com.nikolay.exam.config");

        servletContext.addListener(new ContextLoaderListener(root));
        ServletRegistration.Dynamic dispatcher = servletContext.addServlet("dispatcher", new DispatcherServlet(root));
        dispatcher.setLoadOnStartup(1);
        dispatcher.addMapping("/*");

    }
}

但是当我在tomcat上运行我的应用程序时,我收到一个错误:

  

14-Feb-2015 11:35:29.825警告[http-nio-8080-exec-1] org.springframework.web.servlet.PageNotFound.noHandlerFound找不到带有URI [/ home /]的HTTP请求的映射DispatcherServlet,名称为' dispatcher'   14-Feb-2015 11:35:32.766 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory部署Web应用程序目录/home/nikolay/apache-tomcat-8.0.9/webapps/manager   14-Feb-2015 11:35:32.904 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployDirectory部署Web应用程序目录/home/nikolay/apache-tomcat-8.0.9/webapps/manager已完成136毫秒   14-Feb-2015 11:35:34.888警告[http-nio-8080-exec-3] org.springframework.web.servlet.PageNotFound.noHandlerFound在DispatcherServlet中找不到带有URI [/ home /]的HTTP请求的映射名称'调度'

2 个答案:

答案 0 :(得分:1)

我认为这是注册配置类的方式不正确。

请尝试使用AnnotationConfigWebApplicationContext#register

AnnotationConfigWebApplicationContext appContext = new AnnotationConfigWebApplicationContext();
appContext.register(WebConfig.class);

答案 1 :(得分:-1)

可能你需要改变

dispatcher.addMapping("/*");

dispatcher.addMapping("/");