Unable to connect to Redis How to solve the problem of Unable to connect to Redis-Redis-php.cn

Table of Contents

Project scenario:

完整的项目报错信息：

问题描述：

原因分析：

解决方案：

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Unable to connect to Redis How to solve the problem of Unable to connect to Redis

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May 28, 2023 pm 08:16 PM

redis

Project scenario:

Tips: Here is a brief description of the project-related background:

The submit button in a certain project is not easy to use

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

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Unable to connect to Redis How to solve the problem of Unable to connect to Redis

完整的项目报错信息：

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/:6379
   at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1092)
   at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1065)
   at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getSharedConnection(LettuceConnectionFactory.java:865)
   at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.getConnection(LettuceConnectionFactory.java:340)
   at org.springframework.data.redis.core.RedisConnectionUtils.doGetConnection(RedisConnectionUtils.java:132)
   at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:95)
   at org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:82)
   at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:211)
   at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184)
   at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95)
   at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValueOperations.java:53)
   at com.wuyue.travel.service.HotelService.add(HotelService.java:60)
   at com.wuyue.travel.service.HotelService$$FastClassBySpringCGLIB$$577547fe.invoke()
   at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
   at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:749)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163)
   at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:294)
   at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
   at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
   at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:688)
   at com.wuyue.travel.service.HotelService$$EnhancerBySpringCGLIB$$af4f4c1f.add()
   at com.wuyue.travel.controller.admin.HotelController.add(HotelController.java:65)
   at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
   at java.base/java.lang.reflect.Method.invoke(Method.java:577)
   at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
   at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
   at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
   at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:800)
   at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
   at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038)
   at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942)
   at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
   at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
   at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882)
   at javax.servlet.http.HttpServlet.service(HttpServlet.java:741)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
   at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127)
   at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:74)
   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56)
   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
   at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
   at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
   at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
   at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357)
   at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99)
   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93)
   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
   at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
   at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
   at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
   at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
   at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490)
   at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
   at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
   at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
   at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
   at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408)
   at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
   at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834)
   at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
   at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
   at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
   at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
   at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
   at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: io.lettuce.core.RedisConnectionException: Unable to connect to 127.0.0.1/:6379
   at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:78)
   at io.lettuce.core.RedisConnectionException.create(RedisConnectionException.java:56)
   at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:234)
   at io.lettuce.core.RedisClient.connect(RedisClient.java:204)
   at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:113)
   at java.base/java.util.Optional.orElseGet(Optional.java:364)
   at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:113)
   at org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1085)
   ... 103 more
Caused by: io.netty.channel.AbstractChannel$AnnotatedConnectException: Connection refused: no further information: /127.0.0.1:6379
   at java.base/sun.nio.ch.Net.pollConnect(Native Method)
   at java.base/sun.nio.ch.Net.pollConnectNow(Net.java:672)
   at java.base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:946)
   at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327)
at io.netty.channel.nio.AbstractNioChannel$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

Unable to connect to Redis How to solve the problem of Unable to connect to Redis

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>

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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");
	}

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Dao层数据访问接口

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

    List<Hotel> findByAddrLike(String addr);

}

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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);
	}

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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????

Unable to connect to Redis How to solve the problem of Unable to connect to Redis

解决方案：

提示：缺少Redis环境

Unable to connect to Redis How to solve the problem of Unable to connect to Redis

最后运行成功！

Unable to connect to Redis How to solve the problem of Unable to connect to Redis

在管理员后台列表中也可以看到数据

Unable to connect to Redis How to solve the problem of Unable to connect to Redis

The above is the detailed content of Unable to connect to Redis How to solve the problem of Unable to connect to Redis. For more information, please follow other related articles on the PHP Chinese website!

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