Spring Boot中Jedis几个api返回值的确认
@RequestMapping("/del/{key}")
public String del(@PathVariable("key") String key) {
try {
//键不存在时，也不会抛异常
redisTemplate.delete(key);
return "Success";
} catch (Exception e) {
return e.getMessage();
}
}
RedisTemplate如果是按以下设置的话，直接对String类型使用get方法获取值时，会报以下的错。原因是存放的数据是经过Serialize的。deserialize就是会报错。网上给一个解决办法是使用get(0,-1).
但是，这种场景下，不能使用increment方法，因为存放的值是经过Serialize的，不是数字了，不能increment
这种场景可以使用StringRedisTemplate ，如上例所示
org.springframework.data.redis.serializer.SerializationException : Cannot deserialize; nested exception is org.springframework.core.serializer.support.SerializationFailedException: Failed to deserialize payload. Is the byte array a result of corresponding serialization for DefaultDeserializer?; nested exception is java.io.EOFException
RedisTemplate<StringRedisSerializer, Serializable> rt = new RedisTemplate<>();
rt.setConnectionFactory(jedisConnectionFactory());
JdkSerializationRedisSerializer jdkSerializationRedisSerializer = new JdkSerializationRedisSerializer();
rt.setKeySerializer(new StringRedisSerializer());
rt.setValueSerializer(jdkSerializationRedisSerializer);
package com.rest;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.connection.DataType;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collection;
import java.util.List;
@RestController
public class TestRedisTemplateOperation {
@Autowired
private RedisTemplate redisTemplate;
@Autowired
private StringRedisTemplate stringRedisTemplate;
@RequestMapping("/add")
public String set() {
String key = "mykey";
stringRedisTemplate.boundValueOps(key).increment(1);
return key;
}
@RequestMapping("/get")
public String get() {
String key = "mykey";
//如果key不存在时，Jedis会返回空字符串（key中无值时，redis会删除这个key）
return stringRedisTemplate.boundValueOps(key).get();
}
@RequestMapping("/getList")
public String getList() {
String key = "myList";
//如果key不存在时，Jedis会返回空集合（key中无值时，redis会删除这个key）。这种场景的返回值为"[]"
return redisTemplate.boundListOps(key).range(0, -1).toString();
}
@RequestMapping("/setList/{element}")
public void setList(@PathVariable("element") String element) {
String key = "myList";
redisTemplate.boundListOps(key).leftPush(element);
}
/**
* [null, null, null, null, null]true;true;true;true;true;
* hash不存在时的Operation是否为null:false
* hash不存在，或hash存在但Key不存在时，删除时也不会抛异常
*
* @return
*/
@RequestMapping("/getHash")
public String getHash() {
String key = "myHash";
Collection collection = Arrays.asList(1, 2, 3, 4, 5);
//如果Hash不存在时，Jedis会给每个field返回一个null;存在的field会返回相关的值
//下例中会返回 [null, null, null, null, null]true;true;true;true;true;
List list = redisTemplate.boundHashOps(key).multiGet(collection);
String result = list.toString();
for (Object value : list) {
result = result + (value == null) + ";";
}
redisTemplate.delete(key);
result = result + " \n hash不存在时的Operation是否为null:" + (redisTemplate.boundHashOps(key) == null);
//删除hash中不存在的key时，是否会抛异常
String tmpKey = "myHash2";
redisTemplate.boundHashOps(tmpKey).delete("notExistKey");
redisTemplate.boundHashOps(tmpKey).put("key2-hash", "value2-hash");
redisTemplate.boundHashOps(tmpKey).delete("notExistKey");
result = result + " \n hash不存在，或hash存在但Key不存在时，删除时也不会抛异常";
return result;
}
@RequestMapping("/setHash/{field}/{value}")
public void setHash(@PathVariable("field") String field, @PathVariable("value") String value) {
String key = "myHash";
//执行hmset myHash 1 value1后
//mget的返回值为[value1, null, null, null, null]false;true;true;true;true;
redisTemplate.boundHashOps(key).put(field, value);
}
/**
* 存放在Redis中的返回值：
* {"keyWithNullValue":null,"keyEmptyArrayList":[],"key2":"key2"}
*/
@RequestMapping("/set/hash/null")
public void setHasWithNullValue() {
String key = "myhashWithNull";
redisTemplate.boundHashOps(key).put("keyWithNullValue", null);
redisTemplate.boundHashOps(key).put("keyEmptyArrayList", new ArrayList<>());
redisTemplate.boundHashOps(key).put("key2", "key2");
}
@RequestMapping("/redis/{key}")
public String getRedisDataForkey(@PathVariable("key") String key) throws JsonProcessingException {
if (!StringUtils.isEmpty(key) && redisTemplate.hasKey(key)) {
ObjectMapper objectMapper = new ObjectMapper();
DataType dataType = redisTemplate.type(key);
String type = dataType.code();
if ("string".equals(type)) {
Object _obj = redisTemplate.opsForValue().get(key);
return "string：" + objectMapper.writeValueAsString(_obj);
}
if ("list".equals(type)) {
Object _obj = redisTemplate.boundListOps(key).range(0, -1);
return "list：" + objectMapper.writeValueAsString(_obj);
}
if ("set".equals(type)) {
Object _obj = redisTemplate.boundSetOps(key).members();
return "set：" + objectMapper.writeValueAsString(_obj);
}
if ("zset".equals(type)) {
Object _obj = redisTemplate.boundZSetOps(key).range(0, -1);
return "zset：" + objectMapper.writeValueAsString(_obj);
}
if ("hash".equals(type)) {
Object _obj = redisTemplate.boundHashOps(key).entries();
return "Hash：" + objectMapper.writeValueAsString(_obj);
}
if ("none".equals(type)) {
return "none：";
}
}
return "no key";
}
}
org.springframework.data.redis.core.RedisConnectionUtils
private static void potentiallyRegisterTransactionSynchronisation(RedisConnectionHolder connHolder,
final RedisConnectionFactory factory) {
if (isActualNonReadonlyTransactionActive()) {
if (!connHolder.isTransactionSyncronisationActive()) {
connHolder.setTransactionSyncronisationActive(true);
RedisConnection conn = connHolder.getConnection();
conn.multi();//此处设置mutl
TransactionSynchronizationManager.registerSynchronization(new RedisTransactionSynchronizer(connHolder, conn,
factory));
}
}
}
org.springframework.data.redis.connection.jedis.JedisConnection
public void multi() {
if (isQueueing()) {
return;
}
try {
if (isPipelined()) {
pipeline.multi();
return;
}
this.transaction = jedis.multi();
} catch (Exception ex) {
throw convertJedisAccessException(ex);
}
}
redis.clients.jedis.BinaryJedis
public Transaction multi() {
client.multi();
transaction = new Transaction(client);
return transaction;
}
org.springframework.data.redis.RedisSystemException: Error in execution; nested exception is io.lettuce.core.RedisCommandExecutionException: ERR value is not an integer or out of range
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:54) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:52) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:268) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.convertLettuceAccessException(LettuceStringCommands.java:799) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.connection.lettuce.LettuceStringCommands.incr(LettuceStringCommands.java:332) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.connection.DefaultedRedisConnection.incr(DefaultedRedisConnection.java:323) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.core.DefaultValueOperations.lambda$increment$0(DefaultValueOperations.java:87) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:224) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.core.AbstractOperations.execute(AbstractOperations.java:95) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at org.springframework.data.redis.core.DefaultValueOperations.increment(DefaultValueOperations.java:87) ~[spring-data-redis-2.1.6.RELEASE.jar:2.1.6.RELEASE]
at com.zkh360.general.sms.service.impl.SMSCheckIPServiceImpl.check(SMSCheckIPServiceImpl.java:43) ~[classes/:na]
at com.zkh360.general.sms.cache.impl.SmsCacheServiceImpl.cacheSmsCode(SmsCacheServiceImpl.java:62) ~[classes/:na]
at com.zkh360.general.sms.service.impl.AliSMSServiceImpl.sendCaptchaSMS(AliSMSServiceImpl.java:192) ~[classes/:na]
at com.zkh360.general.sms.controller.BizSMSController.sendCommonCaptchaSMS(BizSMSController.java:60) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_191]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_191]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_191]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_191]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:189) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138) ~[spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:102) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:892) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:797) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1038) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:942) ~[spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1005) [spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:908) [spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:660) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:882) [spring-webmvc-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:741) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) [tomcat-embed-websocket-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:92) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:93) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) [spring-web-5.1.6.RELEASE.jar:5.1.6.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:490) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:678) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:408) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:834) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1415) [tomcat-embed-core-9.0.17.jar:9.0.17]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-9.0.17.jar:9.0.17]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) [na:1.8.0_191]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) [na:1.8.0_191]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-9.0.17.jar:9.0.17]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_191]
Caused by: io.lettuce.core.RedisCommandExecutionException: ERR value is not an integer or out of range
at io.lettuce.core.ExceptionFactory.createExecutionException(ExceptionFactory.java:135) ~[lettuce-core-5.1.6.RELEASE.jar:na]
at io.lettuce.core.ExceptionFactory.createExecutionException(ExceptionFactory.java:108) ~[lettuce-core-5.1.6.RELEASE.jar:na]
at io.lettuce.core.protocol.AsyncCommand.completeResult(AsyncCommand.java:120) ~[lettuce-core-5.1.6.RELEASE.jar:na]
at io.lettuce.core.protocol.AsyncCommand.complete(AsyncCommand.java:111) ~[lettuce-core-5.1.6.RELEASE.jar:na]
at io.lettuce.core.protocol.CommandHandler.complete(CommandHandler.java:646) ~[lettuce-core-5.1.6.RELEASE.jar:na]
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:604) ~[lettuce-core-5.1.6.RELEASE.jar:na]
at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:556) ~[lettuce-core-5.1.6.RELEASE.jar:na]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:337) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1408) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:359) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:345) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:930) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:677) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:612) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:529) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:491) ~[netty-transport-4.1.34.Final.jar:4.1.34.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:905) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30) ~[netty-common-4.1.34.Final.jar:4.1.34.Final]
... 1 common frames omitted
来源：https://www.cnblogs.com/softidea/p/5811600.html