redis叢集配置：

在使用spring的RedisTemplate執行lua指令碼時，報錯EvalSha is not supported in cluster environment，不支援cluster。

程式碼：

    @Test
    public void test4() throws Exception {
        DefaultRedisScript script = new DefaultRedisScript();
        script.setScriptSource(new StaticScriptSource("redis.call('SET', KEYS[1], ARGV[1]); return ARGV[1]"));
        script.setResultType(String.class);
        Object result = redisTemplate.execute(script, Arrays.asList("test_key1"), Arrays.asList("hello,key1"));
        System.out.println(result);
    }
 

報錯資訊：

org.springframework.dao.InvalidDataAccessApiUsageException: EvalSha is not supported in cluster environment.

	at org.springframework.data.redis.connection.jedis.JedisClusterConnection.evalSha(JedisClusterConnection.java:3561)
	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:57)
	at com.sun.proxy.$Proxy136.evalSha(Unknown Source)
	at org.springframework.data.redis.core.script.DefaultScriptExecutor.eval(DefaultScriptExecutor.java:81)
	at org.springframework.data.redis.core.script.DefaultScriptExecutor$1.doInRedis(DefaultScriptExecutor.java:71)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:207)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:169)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:157)
	at org.springframework.data.redis.core.script.DefaultScriptExecutor.execute(DefaultScriptExecutor.java:60)
	at org.springframework.data.redis.core.script.DefaultScriptExecutor.execute(DefaultScriptExecutor.java:54)
	at org.springframework.data.redis.core.RedisTemplate.execute(RedisTemplate.java:300)
	at com.wwwarehouse.xdw.contractcenter.zzz.RedisTest.test4(RedisTest.java:70)
	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.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:252)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
	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$2.evaluate(ParentRunner.java:268)
	at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
	at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.execution.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:51)
	at com.intellij.rt.execution.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:242)
	at com.intellij.rt.execution.junit.JUnitStarter.main(JUnitStarter.java:70)
 

但是redis是支援lua指令碼的，只要拿到原redis的connection物件，通過connection去執行即可：

    @Test
    public void test5() throws Exception {
        List<String> keys = new ArrayList<String>();
        keys.add("test_key1");
        List<String> args = new ArrayList<String>();
        args.add("hello,key1");
        String LUA = "redis.call('SET', KEYS[1], ARGV[1]); return ARGV[1]";
        //spring自帶的執行指令碼方法中，叢集模式直接丟擲不支援執行指令碼異常，此處拿到原redis的connection執行指令碼
        String result = (String)redisTemplate.execute(new RedisCallback<String>() {
            public String doInRedis(RedisConnection connection) throws DataAccessException {
                Object nativeConnection = connection.getNativeConnection();
                // 叢集模式和單點模式雖然執行指令碼的方法一樣，但是沒有共同的介面，所以只能分開執行
                // 叢集
                if (nativeConnection instanceof JedisCluster) {
                    return (String) ((JedisCluster) nativeConnection).eval(LUA, keys, args);
                }

                // 單點
                else if (nativeConnection instanceof Jedis) {
                    return (String) ((Jedis) nativeConnection).eval(LUA, keys, args);
                }
                return null;
            }
        });
        System.out.println(result);
    }
 

輸出： hello,key1