Tidak dapat menyambung ke Redis Bagaimana untuk menyelesaikan masalah Tidak dapat menyambung ke Redis

Senario projek:

Petua: Berikut ialah penerangan ringkas tentang latar belakang berkaitan projek:

Butang hantar dalam projek tertentu tidak mudah digunakan

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: Tidak dapat menyambung ke Redis; Pengecualian bersarang ialah io.lettuce.core.RedisConnectionException: Tidak dapat menyambung ke 127.0.0.1/:6379
    di org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory.$SharedFactoryConnectionFactory$SharedLettuceConnectionFactory. :1092)
    di org.springframework.data.redis.connection.lettuce.LettuceConnectionFactory$SharedConnection.getConnection(LettuceConnectionFactory.java:1065)
    at org.springdissframework.Connection. pertalian (LettuconnectionFactory.java:865)
di org.springframework.data.redis.connection.lettuce.lettuconnectionFactory.getConnection (LettuconnectionFactory.java:340) (RedisConnectionUtils.java:132)
    di org.springframework.data.redis.core.RedisConnectionUtils.getConnection(RedisConnectionUtils.java:95)
    di org.springframework.data.redisnectionUtils.RedisnectionU. .java:82)
    di org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:211)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java :184)
    di org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95)
    at org.springframework.data.redis.core.DefaultValueOperations.get(DefaultValue.Java )
    di com.wuyue.travel.service.HotelService.add(HotelService.java:60)
    at com.wuyue.travel.service.HotelService$$FastClassBySpringCGLIB$$577547fe.invoke&(&glt.
    di org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218)
    di org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invoke Join4.invoke Join di org.springframework.aop.framework.reflectivemethodinvocation.procte (reflectiveThodinvocation.java:163) Amework.Transaction. interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:98)
    di org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186)
 .   pada org.springframework.aop.framework edInterceptor. intercept(CglibAopProxy.java:688)
    at com.wuyue.travel.service.HotelService$$EnhancerBySpringCGLIB$$af4f4c1f.add()
    at com.Hotelcontrollerer.wuyue.ad .add(HotelController.java:65)
    at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
    at java.inlectbase.Java.lang.reflect (Method.java:577)
    di org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189)
    di org.springframework.web.methodableHinvoke.web.methodable. hod .java:138)
    di org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102)
 .web . .RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895)
    di org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(AquestterMapping.🎜 at java : ringframework.web.servlet .mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
    di org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038>DispatcherServlet.java:1038>  .springframework.web.servlet ervlet .doService(DispatcherServlet.java:942)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005)
    at org.springframework.web.serveworkletFrameworkServlet. :908)
    di javax.servlet.http.HttpServlet.service(HttpServlet.java:660)
    di org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java)
    di org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java)  🎜 atjava .servlet.http.HttpServlet.service(HttpServlet.java:741)
    di org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
    di org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
 . apache attom org. .websocket.server.WsFilter.doFilter(WsFilter.java:53)
    di org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.Catalina .doFilter(ApplicationFilterChain.java:166)
    di org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320)
    at org.intercept.webFilteraccess.security .invoke(FilterSecurityInterceptor.java:127)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91)
  .web. .doFilter(FilterChainProxy.java:334)
    di org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119)
    di org.springframework.security.web.Vir.FilterChalterChain.web.Vir.FilterChannel (FilterChainProxy.java:334)
    di org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137)
    at org.springframework.security.web.VlterChalterChainFilter(ProxyFilterChalter. .java:334)
    di org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111)
    at org.springframework.security.web.Vir.ProxyFilterChannel :334)
    di org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:170)
    at org.springframework.FilterinProxyweb.Filter. java:334 )
    di org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63)
    di org.springframework.security.web.FilterChainProxy$VirtualFilterChain.Chain.Charles. 🎜>    di org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116)
    di org.springframework.security.web.FilterChainProxy$VirtualFilterChain(Java:3ChainFilter4 . .springframework.security.web.filterchainproxy $ virtualfilterchain.dofilter (filterchainproxy.java:334) G.SpringFramework .security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334)
    di org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilter Internal(🎜 WebAsync) org .springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    di org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java: . . .springframework.java:334>) .web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215)
    di org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178)
    di org.filterProxyDelegate. (DelegatingFilterProxy.java:357)
    di org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270)
    di org.apache.catalina.core.ApplicationjavaFilterChain.3ApplicationDolterChain. )
    di org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    di org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter)<.java .springframework.web.filter.onceperrequestfilter.dofilter>    di org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    di org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    di org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92)
org .springframework .filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107)
    di org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
   .calter.apache. (ApplicationFilterChain.java:166)
di org.springframework.web.filter.hiddenhtpmethodfilter.dofilterinternal (hiddenhttpmethodfilter.java:93) Estfilter.java:107 )
    di org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java)  :  :  : .springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200)
    di org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) apache atcacore. .ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
    at org.apache.apache. alve .java:199)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.invoke(AuthenticatorBase.invoke) 🎜>    di org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
    di org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReport2Valve)    java. .catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
    di org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
 http 1.coyoteAdapter. .service(Http11Processor.java:408)
    at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProcessorLight.Process(AbstractProcessorLight.java:66)
    at org.apache.coyote.AbstractProtocol$Pronection.AbstractProtocol$Pronection. )
    di org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1417)
    di org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49 )
    di java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
    di java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.Java:1136)
    di java.base/java.util.concurrent.ThreadPoolExecutor.Executor$Worker.run(ThreadExecutor$Worker.run(ThreadPool. )
    di org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
    di java.base/java.lang.Thread.run(Thread.java:833)
Disebabkan oleh: io.lettuce.core.RedisConnectionException: Tidak dapat menyambung ke 127.0.0.1/:6379
    di io.lettuce.core.RedisConnectionException.create(    at io.lettuce.core.AbstractRedisClient.getConnection(AbstractRedisClient.java:234)
    at io.lettuce.core.Re (RedisClient.java:204)
    di org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.lambda$getConnection$1(StandaloneConnectionProvider.java:113)
    at java.base/java. orElseGet(Optional.java:364)
    at org.springframework.data.redis.connection.lettuce.StandaloneConnectionProvider.getConnection(StandaloneConnectionProvider.java:113)
    at org.rediscetionframework.data. LettuceConnectionFactory$SharedConnection.getNativeConnection(LettuceConnectionFactory.java:1085)
    ... 103 lagi
Disebabkan oleh: io.netty.channel.AbstractChannel$AnnotatedConnectException: Maklumat lanjut: /0.21: Sambungan ditolak: /0.21 🎜>    di java.base/sun.nio.ch.Net.pollConnect(Kaedah Asli)
    di java.base/sun.nio.ch.Net.pollConnectNow(Net.java:672)
    di java. base/sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:946)
    at io.netty.channel.socket.nio.NioSocketChannel.doFinishConnect(NioSocketChannel.java:327)
    at io.netty.channel.nio.AbstractNioChannel$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

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

Atas ialah kandungan terperinci Tidak dapat menyambung ke Redis Bagaimana untuk menyelesaikan masalah Tidak dapat menyambung ke Redis. Untuk maklumat lanjut, sila ikut artikel berkaitan lain di laman web China PHP!