白如意i 2024-03-18 09:43 采纳率: 100%
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已结题

Spring data redis 如何获取 redis 的慢日志

我的代码如下，但是报错了

package com.gdjztw.monitor.service.Impl;

import com.gdjztw.monitor.service.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.HashOperations;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.stereotype.Service;

import java.util.Map;
import java.util.Properties;

@Service
public class RedisServiceImpl implements RedisService {
    @Autowired
    private RedisTemplate<String, String> redisTemplate;

    public Object getSlowLog() {
        return redisTemplate.execute(new RedisCallback<Object>() {
            @Override
            public Object doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                byte[] get = serializer.serialize("get");
                return connection.execute("slowlog", get);
            }
        });
    }
}

报错如下：

org.springframework.data.redis.RedisSystemException: Unknown redis exception; nested exception is java.lang.UnsupportedOperationException: io.lettuce.core.output.ByteArrayOutput does not support set(long)

    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.getFallback(FallbackExceptionTranslationStrategy.java:53)
    at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:43)
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:272)
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.await(LettuceConnection.java:1063)
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.lambda$doInvoke$4(LettuceConnection.java:920)
    at org.springframework.data.redis.connection.lettuce.LettuceInvoker$Synchronizer.invoke(LettuceInvoker.java:665)
    at org.springframework.data.redis.connection.lettuce.LettuceInvoker.just(LettuceInvoker.java:125)
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.execute(LettuceConnection.java:408)
    at org.springframework.data.redis.connection.lettuce.LettuceConnection.execute(LettuceConnection.java:376)
    at org.springframework.data.redis.connection.DefaultStringRedisConnection.execute(DefaultStringRedisConnection.java:3991)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.springframework.data.redis.core.CloseSuppressingInvocationHandler.invoke(CloseSuppressingInvocationHandler.java:61)
    at com.sun.proxy.$Proxy145.execute(Unknown Source)
    at com.gdjztw.monitor.service.Impl.RedisServiceImpl$1.doInRedis(RedisServiceImpl.java:43)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:223)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:190)
    at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:177)
    at com.gdjztw.monitor.service.Impl.RedisServiceImpl.getSlowLog(RedisServiceImpl.java:38)
    at com.gdjztw.monitor.service.RedisServiceImplTest.testRedis(RedisServiceImplTest.java:17)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.base/java.lang.reflect.Method.invoke(Method.java:567)
    at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:725)
    at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
    at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
    at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
    at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
    at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
    at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$7(TestMethodTestDescriptor.java:214)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:210)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:135)
    at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:66)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:151)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    at java.base/java.util.ArrayList.forEach(ArrayList.java:1507)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:41)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$6(NodeTestTask.java:155)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:141)
    at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:137)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$9(NodeTestTask.java:139)
    at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:138)
    at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:95)
    at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:35)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
    at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:54)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:107)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:88)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.lambda$execute$0(EngineExecutionOrchestrator.java:54)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.withInterceptedStreams(EngineExecutionOrchestrator.java:67)
    at org.junit.platform.launcher.core.EngineExecutionOrchestrator.execute(EngineExecutionOrchestrator.java:52)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:114)
    at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:86)
    at org.junit.platform.launcher.core.DefaultLauncherSession$DelegatingLauncher.execute(DefaultLauncherSession.java:86)
    at org.junit.platform.launcher.core.SessionPerRequestLauncher.execute(SessionPerRequestLauncher.java:53)
    at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:57)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater$1.execute(IdeaTestRunner.java:38)
    at com.intellij.rt.execution.junit.TestsRepeater.repeat(TestsRepeater.java:11)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:35)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:232)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:55)
Caused by: java.lang.UnsupportedOperationException: io.lettuce.core.output.ByteArrayOutput does not support set(long)
    at io.lettuce.core.output.CommandOutput.set(CommandOutput.java:107)
    at io.lettuce.core.protocol.RedisStateMachine.safeSet(RedisStateMachine.java:778)
    at io.lettuce.core.protocol.RedisStateMachine.handleInteger(RedisStateMachine.java:404)
    at io.lettuce.core.protocol.RedisStateMachine$State$Type.handle(RedisStateMachine.java:206)
    at io.lettuce.core.protocol.RedisStateMachine.doDecode(RedisStateMachine.java:334)
    at io.lettuce.core.protocol.RedisStateMachine.decode(RedisStateMachine.java:295)
    at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:841)
    at io.lettuce.core.protocol.CommandHandler.decode0(CommandHandler.java:792)
    at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:775)
    at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:658)
    at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:598)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:722)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:658)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:584)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:496)
    at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:995)
    at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
    at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
    at java.base/java.lang.Thread.run(Thread.java:830)
  • 写回答

3条回答 默认 最新

  • Kwan的解忧杂货铺@新空间代码工作室 2024-03-18 09:43
    关注

    白如意i 上午好☀️☀️☀️️
    本答案参考ChatGPT-3.5

    根据你提供的代码和报错信息，可以看到问题出现在执行Redis的slowlog命令时。根据报错信息io.lettuce.core.output.ByteArrayOutput does not support set(long)，可以推断该错误是由于Lettuce连接库不支持将long数据类型传递给Redis的slowlog命令造成的。

    解决这个问题的一种方法是使用Lettuce的CommandArgs对象来构建slowlog命令，并将参数传递为字符串。下面是修改后的代码示例：

    import com.gdjztw.monitor.service.RedisService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.connection.RedisConnection;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisCallback;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.serializer.RedisSerializer;
import org.springframework.stereotype.Service;

@Service
public class RedisServiceImpl implements RedisService {
    @Autowired
    private RedisTemplate<String, String> redisTemplate;

    public Object getSlowLog() {
        return redisTemplate.execute(new RedisCallback<Object>() {
            @Override
            public Object doInRedis(RedisConnection connection) throws DataAccessException {
                RedisSerializer<String> serializer = redisTemplate.getStringSerializer();
                CommandArgs<String, String> args = new CommandArgs<>(serializer, serializer);
                args.add("get"); // 添加参数
                return connection.execute("slowlog", args.toCommand());
            }
        });
    }
}

    这种修改方式利用了Lettuce的CommandArgs对象来构建命令，并通过args.toCommand()方法将其转换为可以执行的命令。

    1. 导入Lettuce的CommandArgs类。
    2. 修改doInRedis方法中的代码。
    3. 使用CommandArgs对象来构建slowlog命令，传递参数为字符串。
    4. 执行命令时使用args.toCommand()将命令转换为可以执行的格式。

    这样应该就能够解决你遇到的问题。如果还有其他问题，请及时反馈。

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论
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