stomp 连接错误： Whoops! Lost connection to http://localhost:8080/spring13/stomp 的解决方法

【0】README

1）本文旨在给出 stomp 连接错误： Whoops! Lost connection to http://localhost:8080/spring13/stomp 的解决方法；you can also refer to this link http://stackoverflow.com/questions/29247956/whoops-lost-connection-to-undefined-connection-lost-just-after-the-connection.

2）解决问题后，文末给出了 STOMP client 的配置 和 springmvc 支持STOMP 的配置 ；

【1】错误 和 解决方法

1）error info

2）solution： 添加 jackson 的jar 包 到spring 项目中 即可。

【2】STOMP client 和 STOMP server（springmvc 配置以支持STOMP）

【2.1】STOMP client（websockjs.jsp）

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<%@ taglib uri="http://www.springframework.org/tags/form" prefix="sf"%>



    
    
    
    




    

        Connect
        Disconnect
    
    

        What is your name?
        Send
        

    

【2.2】STOMP server（springmvc 配置以支持STOMP）

1）WebConfig.java

package com.spring.spittr.web;

import java.io.IOException;

import org.springframework.context.MessageSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.support.ResourceBundleMessageSource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.web.multipart.MultipartResolver;
import org.springframework.web.multipart.commons.CommonsMultipartResolver;
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.ViewControllerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import org.springframework.web.servlet.view.InternalResourceViewResolver;
import org.springframework.web.servlet.view.tiles3.TilesConfigurer;
import org.springframework.web.servlet.view.tiles3.TilesViewResolver;

@Configuration
@ComponentScan(basePackages = { "com.spring.spittr.web" })
@EnableWebMvc
@Import({WebSocketConfig.class}) // 引入 WebSocketConfig 的配置，下面声明了。
public class WebConfig extends WebMvcConfigurerAdapter {

	@Bean
	public TilesConfigurer tilesConfigurer() {
		TilesConfigurer tiles = new TilesConfigurer();
		tiles.setDefinitions(new String[] { "/WEB-INF/layout/tiles.xml" });
		tiles.setCheckRefresh(true);
		return tiles;
	}
	
	// config processing for static resources.
	@Override
	public void configureDefaultServletHandling(
			DefaultServletHandlerConfigurer configurer) {
		configurer.enable();
	}
	
	// InternalResourceViewResolver 
	@Bean
	public ViewResolver viewResolver1() {
		TilesViewResolver resolver = new TilesViewResolver();
		return resolver;
	}
		
	@Bean
	public ViewResolver viewResolver2() {
		InternalResourceViewResolver resolver = new InternalResourceViewResolver();
		resolver.setPrefix("/WEB-INF/views/");
		resolver.setSuffix(".jsp");
		resolver.setExposeContextBeansAsAttributes(true);
		resolver.setViewClass(org.springframework.web.servlet.view.JstlView.class);
		return resolver;
	}

	@Bean
	public MessageSource messageSource() {
		ResourceBundleMessageSource messageSource = new ResourceBundleMessageSource();
		messageSource.setBasename("messages"); 
		return messageSource;
	}

	@Bean
	public MultipartResolver multipartResolver() throws IOException {
		CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
		multipartResolver.setUploadTempDir(new FileSystemResource("/WEB-INF/tmp/spittr/uploads"));
		multipartResolver.setMaxUploadSize(2097152);
		multipartResolver.setMaxInMemorySize(0);
		return multipartResolver;
	}
}

2）WebSocketConfig.java

package com.spring.spittr.web;

import org.springframework.context.annotation.Configuration;
import org.springframework.messaging.handler.annotation.MessageMapping;
import org.springframework.messaging.simp.config.MessageBrokerRegistry;
import org.springframework.web.socket.config.annotation.AbstractWebSocketMessageBrokerConfigurer;
import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
import org.springframework.web.socket.config.annotation.StompEndpointRegistry;

@Configuration
@EnableWebSocketMessageBroker
public class WebSocketConfig extends AbstractWebSocketMessageBrokerConfigurer {

  @Override
  public void configureMessageBroker(MessageBrokerRegistry config) {
      config.enableSimpleBroker("/topic", "/queue");
      config.setApplicationDestinationPrefixes("/app");
      // 应用程序以 /app 为前缀，而 代理目的地以 /topic 为前缀.
      // js.url = "/spring13/app/hello" -> @MessageMapping("/hello") 注释的方法.
  }

  @Override
  public void registerStompEndpoints(StompEndpointRegistry registry) {
      registry.addEndpoint("/stomp").withSockJS();
      // 在网页上我们就可以通过这个链接 /server/app/hello 来和服务器的WebSocket连接
  }
}

3）GreetingController.java

package com.spring.spittr.web;

import org.springframework.messaging.handler.annotation.MessageMapping;
import org.springframework.messaging.handler.annotation.SendTo;
import org.springframework.stereotype.Controller;

import com.spring.pojo.Greeting;
import com.spring.pojo.HelloMessage;

@Controller
public class GreetingController {
	
	@MessageMapping("/stomp")
	@SendTo("/topic/response")
	public Greeting greeting(HelloMessage message) throws Exception {
		System.out.println("receiving " + message);
		System.out.println("connecting successfully.");
		return new Greeting("Hello, " + message.getName() + "!");
	}
}

4）SpitterWebInitializer.java

package com.spring.spittr.config;

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

import com.spring.spittr.web.WebConfig;
import com.spring.spittr.web.WebSocketConfig;

public class SpitterWebInitializer 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[] { "/", "*.js", "*.css", "*.jpg", "*.png", "/app/*", "*.map" };
	} // 特别注意，这里配置不拦截的url。特别是 "/app/*"
}