spring集成redisson踩过的坑

我用spring的xml集成一直报错，所以只能选择注解方式：

@Configuration
public class RedissionConfig {

    Logger log = LoggerFactory.getLogger(RedissionConfig.class);

    @Value("${redis_ip}")
    String redis_ip;

    @Value("${redis_port}")
    String redis_port;

    @Value("${redis_password}")
    String redis_password;

    @Bean(name="redissonClient")
   public RedissonClient init(){
        log.info("redis_ip:"+redis_ip);
        log.info("redis_port:" +redis_port);
        log.info("redis_password:"+redis_password);
        Config config = new Config();
        String url = "redis://"+redis_ip+":"+redis_port;
        log.info(url);
        config.useSingleServer().setAddress(url).setPassword(redis_password);
        RedissonClient redissonClient = Redisson.create(config);
        log.info("初始化RedissonClient");
        return redissonClient;
    }

}

第一坑就是版本兼容问题，我用的Spring是4.2.7，第一次集成的是3.12.0，会报以下错误：

严重: Unable to process Jar entry [module-info.class] from Jar [jar:file:/C:/Users/Administrator/.m2/repository/com/fasterxml/jackson/dataformat/jackson-dataformat-yaml/2.10.1/jackson-dataformat-yaml-2.10.1.jar!/] for annotations
org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 19
	at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:133)
	at org.apache.tomcat.util.bcel.classfile.ConstantPool.(ConstantPool.java:60)
	at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209)
	at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2134)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:2010)
	at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1976)
	at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1961)
	at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1319)
	at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:878)
	at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:376)
	at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
	at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
	at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5322)
	at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
	at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
	at java.util.concurrent.FutureTask.run$$$capture(FutureTask.java:266)
	at java.util.concurrent.FutureTask.run(FutureTask.java)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:748)

所以把版本降低到3.10.0，就不会报错了。

第二个坑是设置密码问题，因为要区分多环境，所以把redis的信息写到配置文件中，如果按照上面的配置，会报以下错误：

Caused by: org.redisson.client.RedisException: ERR Client sent AUTH, but no password is set. channel: [id: 0xe37c85e0, L:/192.168.0.128:54867 - R:192.168.0.128/192.168.0.128:5802] command: (AUTH), params: []
	at org.redisson.client.handler.CommandDecoder.decode(CommandDecoder.java:314)
	at org.redisson.client.handler.CommandDecoder.decodeCommand(CommandDecoder.java:130)
	at org.redisson.client.handler.CommandDecoder.decode(CommandDecoder.java:110)
	at io.netty.handler.codec.ByteToMessageDecoder.decodeRemovalReentryProtection(ByteToMessageDecoder.java:502)
	at io.netty.handler.codec.ReplayingDecoder.callDecode(ReplayingDecoder.java:366)
	at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:278)
	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.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$HeadContext.channelRead(DefaultChannelPipeline.java:1434)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362)
	at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:348)
	at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:965)
	at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:163)
	at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:656)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:591)
	at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:508)
	at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:470)
	... 3 more

所以要判断密码是否为空，如果是空不做参数即可，下面是改正过的代码：

public RedissonClient init(){
        log.info("redis_ip:"+redis_ip);
        log.info("redis_port:" +redis_port);
        log.info("redis_password:"+redis_password);
        Config config = new Config();
        String url = "redis://"+redis_ip+":"+redis_port;
        log.info(url);
        SingleServerConfig singleServerConfig = config.useSingleServer().setAddress(url);
        if(!StringUtils.isEmpty(redis_password)){
            singleServerConfig.setPassword(redis_password);
        }
        RedissonClient redissonClient = Redisson.create(config);
        log.info("初始化RedissonClient");
        return redissonClient;
    }

另外，网上的帖子好多直接放的ip+端口号，但是我本地会报错，一定在加redis://192.168.2.128:6379这种格式的，可能是因为版本问题，也有可能就是误导人的。

看到上面的报错，感觉知道xml的错误了：

没有设置密码，一定不要把password属性放上去，要不会报错的