Spring Boot Redis配置不工作

Question

我正在开发一个带有ServletLaunalizer的Spring Boot[web]REST风格的应用程序（因为它需要部署到现有的Tomcat服务器）。它有一个@RestController，其方法在调用时需要写入Redispub-sub通道。我让Redis服务器在localhost上运行（默认端口，没有密码）。POM文件的相关部分具有所需的启动器依赖关系：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

当我部署战争并到达终点时http://localhost:8080/springBootApp/health，我得到这样的回应：

{
  "status": "DOWN",
  "diskSpace": {
    "status": "UP",
    "total": 999324516352,
    "free": 691261681664,
    "threshold": 10485760
  },
  "redis": {
    "status": "DOWN",
    "error": "org.springframework.data.redis.RedisConnectionFailureException: java.net.SocketTimeoutException: Read timed out; nested exception is redis.clients.jedis.exceptions.JedisConnectionException: java.net.SocketTimeoutException: Read timed out"
  }
}

我在Spring Boot应用程序类中添加了以下内容：

@Bean
JedisConnectionFactory jedisConnectionFactory() {
    return new JedisConnectionFactory();
}

@Bean
public RedisTemplate<String, Object> redisTemplate() {
    RedisTemplate<String, Object> template = new RedisTemplate<String, Object>();
    template.setConnectionFactory(jedisConnectionFactory());
    return template;
}

在执行一些测试Redis代码之前，我还尝试将以下内容添加到我的@RestController，但我在堆栈跟踪中得到了与上面相同的错误：

@Autowired
private RedisTemplate<String, String> redisTemplate;

编辑（2017-05-09)我的理解是Spring Boot Redis启动器假设spring.redis.host=localhost和spring.redis.port=6379的默认值，我仍然将两者添加到application.properties，但这并不能填补空白。

更新（2017-05-10）我为这个帖子添加了一个答案。

Answer 1

这是一个与代理相关的问题，甚至连对本地主机的访问都受到了某种程度的限制。一旦我禁用了代理设置，Redis health就启动了！所以问题解决了。我不需要向应用程序添加任何属性。属性，我也不必在Spring Boot应用程序类中显式配置任何内容，因为Spring Boot和Redis Starter会根据Redis默认值自动配置（在我的开发环境中适用）。我刚刚在pom中添加了以下内容。xml：

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>

下面是@RestController注释类，以及Spring Boot根据需要自动连接（棒极了！）。

@Autowired
private RedisTemplate<String, String> redisTemplate;

要将简单的消息发布到通道，这一行代码足以验证设置：

this.redisTemplate.convertAndSend(channelName, "hello world");

我感谢所有的评论，它们有助于支持我的支票。

Answer 2

您需要使用应用程序配置redis服务器信息。属性：

# REDIS (RedisProperties)
spring.redis.cluster.nodes= # Comma-separated list of "host:port"
spring.redis.database=0 # Database index
spring.redis.url= # Connection URL, 
spring.redis.host=localhost # Redis server host.
spring.redis.password= # Login password of the redis server.
spring.redis.ssl=false # Enable SSL support.
spring.redis.port=6379 # Redis server port.

Spring数据文档：https://docs.spring.io/spring-boot/docs/current/reference/html/common-application-properties.html#REDIS

Answer 3

我用redis和spring boot做了一个简单的例子

首先我在docker上安装了redis：

$docker run——说出一些redis-d redis服务器的名字——appendonly yes

然后我将此代码用于接收器：

import java.util.concurrent.CountDownLatch;

public class Receiver {
    private static final Logger LOGGER = LoggerFactory.getLogger(Receiver.class);

    private CountDownLatch latch;

    @Autowired
    public Receiver(CountDownLatch latch) {
        this.latch = latch;
    }

    public void receiveMessage(String message) {
        LOGGER.info("Received <" + message + ">");
        latch.countDown();
    }

}

这是我的Spring启动应用程序和我的听众：

@SpringBootApplication
// after add security library then it is need to use security configuration.
@ComponentScan("omid.spring.example.springexample.security")
public class RunSpring {
    private static final Logger LOGGER = LoggerFactory.getLogger(RunSpring.class);


    public  static   void main(String[] args) throws InterruptedException {
        ConfigurableApplicationContext contex =  SpringApplication.run(RunSpring.class, args);
    }

    @Autowired
    private ApplicationContext context;

    @RestController
    public class SimpleController{

        @RequestMapping("/test")
        public String getHelloWorld(){

            StringRedisTemplate template = context.getBean(StringRedisTemplate.class);
            CountDownLatch latch = context.getBean(CountDownLatch.class);

            LOGGER.info("Sending message...");

            Thread t = new Thread(new Runnable() {
                @Override
                public void run() {
                    for (int i = 0 ;  i < 100 ; i++) {
                        template.convertAndSend("chat", i + " => Hello from Redis!");
                        try {
                            Thread.sleep(100);
                        } catch (InterruptedException e) {
                            e.printStackTrace();
                        }

                    }

                }
            });
            t.start();

            try {
                latch.await();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }


            return "hello world 1";
        }
    }

    ///////////////////////////////////////////////////////////////


    @Bean
    RedisMessageListenerContainer container(RedisConnectionFactory connectionFactory,
                                            MessageListenerAdapter listenerAdapter) {

        RedisMessageListenerContainer container = new RedisMessageListenerContainer();
        container.setConnectionFactory(connectionFactory);
        container.addMessageListener(listenerAdapter, new PatternTopic("chat"));

        return container;
    }

    @Bean
    MessageListenerAdapter listenerAdapter(Receiver receiver) {
        return new MessageListenerAdapter(receiver, "receiveMessage");
    }

    @Bean
    Receiver receiver(CountDownLatch latch) {
        return new Receiver(latch);
    }

    @Bean
    CountDownLatch latch() {
        return new CountDownLatch(1);
    }

    @Bean
    StringRedisTemplate template(RedisConnectionFactory connectionFactory) {
        return new StringRedisTemplate(connectionFactory);
    }
}

重要的一点是redis IP。如果你像我一样在docker上安装它，那么你应该像这样在application.properties中设置ip地址：spring.redis.host=172.17.0.4

我把我所有的spring示例都放在了github上