[网络协议]解决webSocket服务类中使用@Autowired注入为空的办法

启动类main方法中改造

public static void main(String[] args) {

        //SpringApplication.run(EResourceApplication.class, args);

        //解决webSocket中service类无法注入的问题
        SpringApplication springApplication = new SpringApplication(EResourceApplication.class);
        ConfigurableApplicationContext configurableApplicationContext = springApplication.run(args);
        WebSocketServer.setApplicationContext(configurableApplicationContext);
        System.out.println("ヾ(?°?°?)ﾉﾞ物联网数据平台系统启动成功 ！     ヾ(?°?°?)ﾉﾞ");
    }	

WebSocketServer服务类中改造

//由于Autowired注解和ServerEndpoint注解同时使用会冲突
    // 所以使用原生方法获取bean;
    private static ApplicationContext applicationContext;
    private IEquipmentService equipmentService;
    public static void setApplicationContext(ApplicationContext applicationContext){
        WebSocketServer.applicationContext=applicationContext;
    }

onOpen方法中改造

equipmentService = SpringContextUtil.getBean(IEquipmentService.class);

自己拷贝过去工具类代码

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

import javax.servlet.http.HttpServletRequest;

/**
 * @author haotongkun
 * @date 2021/8/9 17:32
 * @Description TODO
 * @Version 1.0
 */
@Component
public class SpringContextUtil implements ApplicationContextAware {
    /**
     * 上下文对象实例
     */
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        this.applicationContext = applicationContext;
    }

    /**
     * 获取applicationContext
     *
     * @return
     */
    public static ApplicationContext getApplicationContext() {
        return applicationContext;
    }

    /**
     * 获取HttpServletRequest
     */
    public static HttpServletRequest getHttpServletRequest() {
        return ((ServletRequestAttributes) RequestContextHolder.getRequestAttributes()).getRequest();
    }

    public static String getDomain(){
        HttpServletRequest request = getHttpServletRequest();
        StringBuffer url = request.getRequestURL();
        return url.delete(url.length() - request.getRequestURI().length(), url.length()).toString();
    }

    public static String getOrigin(){
        HttpServletRequest request = getHttpServletRequest();
        return request.getHeader("Origin");
    }

    /**
     * 通过name获取 Bean.
     *
     * @param name
     * @return
     */
    public static Object getBean(String name) {
        return getApplicationContext().getBean(name);
    }

    /**
     * 通过class获取Bean.
     *
     * @param clazz
     * @param       <T>
     * @return
     */
    public static <T> T getBean(Class<T> clazz) {
        return getApplicationContext().getBean(clazz);
    }

    /**
     * 通过name,以及Clazz返回指定的Bean
     *
     * @param name
     * @param clazz
     * @param       <T>
     * @return
     */
    public static <T> T getBean(String name, Class<T> clazz) {
        return getApplicationContext().getBean(name, clazz);
    }
}