使用lua腳本釋放鎖時，lua 腳本中返回值為 int 時出現(xiàn)異常，但是將返回值修改為 string 時卻能正常使用
錯誤信息如下：
org.springframework.data.redis.RedisSystemException: Redis exception; nested exception is io.lettuce.core.RedisException: java.lang.IllegalStateException
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:74)
at org.springframework.data.redis.connection.lettuce.LettuceExceptionConverter.convert(LettuceExceptionConverter.java:41)
at org.springframework.data.redis.PassThroughExceptionTranslationStrategy.translate(PassThroughExceptionTranslationStrategy.java:44)
at org.springframework.data.redis.FallbackExceptionTranslationStrategy.translate(FallbackExceptionTranslationStrategy.java:42)
at org.springframework.data.redis.connection.lettuce.LettuceConnection.convertLettuceAccessException(LettuceConnection.java:257)
at org.springframework.data.redis.connection.lettuce.LettuceScriptingCommands.convertLettuceAccessException(LettuceScriptingCommands.java:236)
at org.springframework.data.redis.connection.lettuce.LettuceScriptingCommands.evalSha(LettuceScriptingCommands.java:195)
at org.springframework.data.redis.connection.DefaultedRedisConnection.evalSha(DefaultedRedisConnection.java:1240)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.data.redis.core.CloseSuppressingInvocationHandler.invoke(CloseSuppressingInvocationHandler.java:61)
at com.sun.proxy.$Proxy59.evalSha(Unknown Source)
at org.springframework.data.redis.core.script.DefaultScriptExecutor.eval(DefaultScriptExecutor.java:77)
at org.springframework.data.redis.core.script.DefaultScriptExecutor.lambda$execute$0(DefaultScriptExecutor.java:68)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:224)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:184)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:171)
at org.springframework.data.redis.core.script.DefaultScriptExecutor.execute(DefaultScriptExecutor.java:58)
at org.springframework.data.redis.core.script.DefaultScriptExecutor.execute(DefaultScriptExecutor.java:52)
at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:346)
at spring.redis.handler.RedisHandler.luaReleaseLock(RedisHandler.java:49)
at spring.redis.handler.RedisHandlerTest.luaReleaseLock(RedisHandlerTest.java:36)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.springframework.test.context.junit4.statements.RunBeforeTestExecutionCallbacks.evaluate(RunBeforeTestExecutionCallbacks.java:73)
at org.springframework.test.context.junit4.statements.RunAfterTestExecutionCallbacks.evaluate(RunAfterTestExecutionCallbacks.java:83)
at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:251)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:97)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:190)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:47)
at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
Caused by: io.lettuce.core.RedisException: java.lang.IllegalStateException
at io.lettuce.core.LettuceFutures.awaitOrCancel(LettuceFutures.java:125)
at io.lettuce.core.FutureSyncInvocationHandler.handleInvocation(FutureSyncInvocationHandler.java:62)
at io.lettuce.core.internal.AbstractInvocationHandler.invoke(AbstractInvocationHandler.java:80)
at com.sun.proxy.$Proxy57.evalsha(Unknown Source)
at org.springframework.data.redis.connection.lettuce.LettuceScriptingCommands.evalSha(LettuceScriptingCommands.java:193)
... 47 more
Caused by: java.lang.IllegalStateException
at io.lettuce.core.output.CommandOutput.set(CommandOutput.java:75)
at io.lettuce.core.protocol.RedisStateMachine.safeSet(RedisStateMachine.java:357)
at io.lettuce.core.protocol.RedisStateMachine.decode(RedisStateMachine.java:138)
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:629)
at io.lettuce.core.protocol.CommandHandler.decode0(CommandHandler.java:604)
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:599)
at io.lettuce.core.protocol.CommandHandler.decode(CommandHandler.java:547)
at io.lettuce.core.protocol.CommandHandler.channelRead(CommandHandler.java:516)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.ChannelInboundHandlerAdapter.channelRead(ChannelInboundHandlerAdapter.java:86)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:340)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1414)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:945)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:146)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:645)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:580)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:497)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:459)
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:886)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.lang.Thread.run(Thread.java:745)在lua腳本中返回 string 類型時缺沒問題
詳細代碼如下：
@Component
public class RedisHandler {
private final Logger logger = LoggerFactory.getLogger(RedisHandler.class);
@Autowired
RedisTemplate redisTemplate;
public Object luaReleaseLock(String key, String value) {
String script = "if redis.call('get', KEYS[1]) == ARGV[1] then return redis.call('del', KEYS[1]) else return 0 end ";
DefaultRedisScript<Integer> redisScript = new DefaultRedisScript<>();
redisScript.setScriptText(script);
redisScript.setResultType(Integer.class);
redisTemplate.execute(redisScript, Collections.singletonList(key), value);
return null;
}
}RedisTemplate 配置
@Bean
public RedisTemplate redisTemplate(RedisConnectionFactory redisConnectionFactory) {
RedisTemplate redisTemplate = new RedisTemplate();
redisTemplate.setConnectionFactory(redisConnectionFactory);
GenericJackson2JsonRedisSerializer redisSerializer = new GenericJackson2JsonRedisSerializer();
redisTemplate.setDefaultSerializer(redisSerializer);
return redisTemplate;
}POM
<properties>
<jackson.version>2.9.4</jackson.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
</dependencies>而外還有一個問題是 redisTemplate.execute 返回定義的為泛型，為何返回值卻是 object
@Override
public <T> T execute(RedisScript<T> script, List<K> keys, Object... args) {
return scriptExecutor.execute(script, keys, args);
}
我也遇到了,最開始redis-cli執(zhí)行完全沒有問題, 然后就只能取跟蹤代碼了,最后看到這 org.springframework.data.redis.connection.ReturnType , 這里面redis沒有對應(yīng)的Integer ,只有使用Long
這里的類型對應(yīng)redis的回復(fù)協(xié)議,可以了解下下,哈哈
貼上一個代碼
public static ReturnType fromJavaType(@Nullable Class<?> javaType) {
if (javaType == null) {
return ReturnType.STATUS;
}
if (javaType.isAssignableFrom(List.class)) {
return ReturnType.MULTI;
}
if (javaType.isAssignableFrom(Boolean.class)) {
return ReturnType.BOOLEAN;
}
if (javaType.isAssignableFrom(Long.class)) {
return ReturnType.INTEGER;
}
return ReturnType.VALUE;
}
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