Impossible de se connecter à Redis Comment résoudre le problème Impossible de se connecter à Redis

Scénario du projet :

Conseils : Voici une brève description du contexte lié au projet :

Le bouton Soumettre dans un certain projet n'est pas facile à utiliser

org.springframework.data.redis.RedisConnectionFailureException: 
Unable to connect to Redis; 
nested exception is io.lettuce.core.RedisConnectionException: Unable to connect to 127.0.0.1/<unresolved>:6379

完整的项目报错信息：

org.springframework.data.redis.RedisConnectionFailureException : impossible de se connecter à Redis ; L'exception imbriquée est io.lettuce.core.RedisConnectionException : Impossible de se connecter à 127.0.0.1/:6379
    à org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1092 )
    sur org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1065)
    sur org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java :865 )
    sur org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:340)
    sur org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:132)
    sur org .springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:95)
    sur org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:82)
    sur org.springframework.data.redis .core.RedisTemplate.execute(RedisTemplate.java:211)
    sur org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184)
    sur org.springframework.data.redis.core.AbstractOperations.execute (AbstractOperations.java:95)
    sur org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:53)
    sur com.wuyue.travel.service.HotelService.add(HotelService.java:60)
à com.wuyue.travel.service.HotelService$$FastClassBySpringCGLIB$$577547fe.invoke()
    à org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
    à org.springframework. aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749)
    sur org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
    sur org.springframework.transaction.interceptor.Transaction AspectSupport.invokeWithinTransaction( TransactionAspectSupport.java:294)
    sur org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    sur org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
    sur org. springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
    sur com.wuyue.travel.service.HotelService$$EnhancerBySpringCGLIB$$af4f4c1f.add()
    sur com.wuyue.travel .controller.admin.HotelController.add(HotelController.java:65)
    sur java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
    sur java.base/java.lang.reflect.Method .invoke(Method.java:577)
    sur org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
    sur org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java :138)
    sur org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
    sur org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMapping Adaptateur de gestionnaire .java:895)
    sur org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
    sur org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter .java:87)
    sur org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
    sur org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
    sur org.springframework .web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    sur org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
    sur javax.servlet.http.HttpServlet.service(HttpServlet.java :660)
    sur org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
    sur javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
    sur org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    sur org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    sur org.apache.tomcat.websocket.server .WsFilter.doFilter(WsFilter.java:53)
    sur org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    sur org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166 )
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
    sur org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
    sur org .springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security .web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.session.SessionManagementFilter .doFilter(SessionManagementFilter.java:137)
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthentication Filtre.java :111)
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:1 70)
    à l'org .springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
    sur org.springframework.security.web .FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain .doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:74)
    sur org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107 )
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
  sur org.springframework .security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
    sur org.springframework.web .filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    sur org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    sur org.springframework.security.web.FilterChainProxy.doFilterInternal(Filter ChaîneProxy .java:215)
    sur org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
    sur org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
    sur org.springframe travail .web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
    sur org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    sur org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain .java:166)
    sur org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
    sur org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    sur org.apache .catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    sur org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    sur org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
    sur org.springframework.web.filter.OncePerRequestFilter .doFilter(OncePerRequestFilter.java:107)
    sur org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    sur org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
sur org.springframework.web.filter.hiddenhttpmethodfilter.dofilterinternal (HiddenhttpMethodFilter.java:93) à org.springframework.web.filter.onceperrequestfilter. .Core.ApplicationFilterChain .internalDoFilter(ApplicationFilterChain.java:193)
    sur org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    sur org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
sur org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    sur org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    sur org.apache.catalina.core.ApplicationFilterChain .doFilter(ApplicationFilterChain.java:166)
    sur org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
    sur org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
sur org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
    sur org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    sur org.apache.catalina.valves.ErrorReportValve .invoke(ErrorReportValve.java:92)
    sur org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    sur org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
sur org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
    sur org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    sur org.apache.coyote.AbstractProtocol$ConnectionHandler.process (AbstractProtocol.java:834)
    sur org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
    sur org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java :49)
    sur java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
    sur java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
sur org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    sur java.base/java.lang.Thread.run(Thread.java:833)
Causé par : io.lettuce .core.RedisConnectionException : Impossible de se connecter à 127.0.0.1/:6379
    à io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78)
    à io.lettuce.core.RedisConnectionException.create(RedisConnectionException. .java:56)
    sur io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:234)
    sur io.lettuce.core.RedisClient.connect(RedisClient.java:204)
    sur org.springframework.data.redis .connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:113)
    sur java.base/java.util.Optional.orElseGet(Optional.java:364)
    sur org.springframework.data.redis.connection. lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:113)
    sur org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1085)
    ... 103 de plus
Causé par : io. netty.channel.AbstractChannel$AnnotatedConnectException : connexion refusée : aucune information supplémentaire : /127.0.0.1:6379
    sur java.base/sun.nio.ch.Net.pollConnect (méthode native)
    sur java.base/sun.nio. ch.Net.pollConnectNow(Net.java:672)
    sur java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:946)
    sur io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect( NioSocketChannel.java:327)
    at io.netty.channel.nio.AbstractNioChannel$AbstractNioUnsafe.finishConnect(AbstractNioChannel.java:340)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:636)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:583)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:500)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:462)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:897)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    ... 1 more
Caused by: java.net.ConnectException: Connection refused: no further information
    ... 12 more

问题描述：

提示：这里描述项目中遇到的问题：

在某个项目中添加按钮一直显示执行出错

一开始想的是代码问题，于是翻看各层代码：

首先看页面：

<script>
    layui.use([&#39;form&#39;, &#39;upload&#39;, &#39;laydate&#39;] ,function(){

        var form = layui.form
            ,$ = layui.jquery
            ,layer = layui.layer
            ,upload = layui.upload
            ,laydate = layui.laydate;

        //日期
        laydate.render({
            elem: &#39;#date&#39;
        });

        //普通图片上传
        var uploadInst = upload.render({
            elem: &#39;#test1&#39;
            ,url: &#39;/uploadFile&#39;
            ,before: function(obj){
                //预读本地文件示例，不支持ie8
                obj.preview(function(index, file, result){
                    $(&#39;#demo1&#39;).attr(&#39;src&#39;, result); //图片链接（base64）
                });
            }
            ,done: function(res){
                //如果上传失败
                if(res.code > 0){
                    return layer.msg(&#39;上传失败&#39;);
                }
                //上传成功
                return layer.msg(&#39;上传成功&#39;);
            }
            ,error: function(){
                //演示失败状态，并实现重传
                var demoText = $(&#39;#demoText&#39;);
                demoText.html(&#39;<span >上传失败</span> <a class="layui-btn layui-btn-xs demo-reload">重试</a>&#39;);
                demoText.find(&#39;.demo-reload&#39;).on(&#39;click&#39;, function(){
                    uploadInst.upload();
                });
            }
        });

        //监听提交
        form.on(&#39;submit(setmyinfo)&#39;, function(obj){

            $.ajax({
                type: "POST",
                url: "/hotel",
                data: JSON.stringify(obj.field),
                dataType: "json",
                contentType: "application/json;charset=utf-8",
                success: function(result) {
                    if(result.code == 0) {

                        //登入成功的提示
                        layer.msg(
                            result.message,{
                                icon: 1
                            });
                    } else {
                        layer.msg(result.message, {
                            icon: 5
                        });
                    }
                }
            });

        });

    });
</script>

Controller层代码

	/**
	 * 增加
	 * @param hotel
	 */
	@ResponseBody
	@RequestMapping(method=RequestMethod.POST)
	public Result add(@RequestBody Hotel hotel){
		hotelService.add(hotel);
		return new Result(true,StatusCode.OK,"增加成功");
	}

Dao层数据访问接口

public interface HotelDao extends JpaRepository<Hotel,String>,JpaSpecificationExecutor<Hotel>{

    List<Hotel> findByAddrLike(String addr);

}

Service层代码

	/**
	 * 增加
	 * @param hotel
	 */
	public void add(Hotel hotel) {
		hotel.setId( idWorker.nextId()+"" );
		//取到缓存中的文件url
		String fileurl = (String) redisTemplate.opsForValue().get("fileurl");

		hotel.setImg("https://travel031.oss-cn-qingdao.aliyuncs.com/"+fileurl);
		hotelDao.save(hotel);
	}

其实这一路看过来没发现啥问题，基本上是谁也不会觉得代码有问题

原因分析：

提示：Unable to connect to Redis

这意思是说无法连接到Redis

当时是看完代码觉得没问题又去F12检查页面，当然我还是没看出啥问题????

解决方案：

提示：缺少Redis环境

最后运行成功！

在管理员后台列表中也可以看到数据

Ce qui précède est le contenu détaillé de. pour plus d'informations, suivez d'autres articles connexes sur le site Web de PHP en chinois!