springboot使用redis缓存开发模板

2022-03-25 14:50:47 浏览数 (1)

docker下的redis缓存，以及在springboot中的使用

最近项目业务中接受秒级实时数据时，要求每次更新接受时间，和超过10分钟没有接受到数据的设备，要停机

考虑到大量快速的修改和定向属性访问，使用mysql会非常影响性能，所以结合redis做缓存试试

性能还没有测试，先把docker的redis容器生成，和springboot使用redis的方法总结一下

docker下的redis缓存服务器

docker确实是非常厉害，这里不多做介绍，自行了解docker知识 首先在ubuntu下准备docker环境（我使用的ubuntu,所以其他环境的请准备其他的相关docker环境） 写Dockerfile如下：

代码语言：javascript复制
FROM jdk:8
MAINTAINER <clb7rowrain@gmail.com>
ENTRYPOINT ["java"]
RUN  apt-get update
RUN  apt-get -y install redis-server
EXPOSE 6379
ENTRYPOINT  ["/usr/bin/redis-server"]

打镜像

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docker build -t test-redis:0.1 .

运行

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docker run -d  test-redis:0.1

访问测试：

报错(error) NOAUTH Authentication required. 解决：因为redis有密码，需要登陆密码 进入docker容器： sudo docker exec -it 9f01 /bin/bash

修改redis.conf里面的requirepass yourpassword

再次尝试成功：

springboot中的配置

maven

代码语言：javascript复制
<!-- redis -->
    <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-redis</artifactId>
           <version>1.4.0.RELEASE</version>
       </dependency>
        <!-- swagger -->
       <dependency>
           <groupId>io.springfox</groupId>
           <artifactId>springfox-swagger2</artifactId>
          <exclusions>
               <exclusion>
                   <groupId>com.google.guava</groupId>
                   <artifactId>guava</artifactId>
               </exclusion>
           </exclusions>
       </dependency>
       <dependency>
           <groupId>io.springfox</groupId>
           <artifactId>springfox-swagger-ui</artifactId>
       </dependency>

主函数

代码语言：javascript复制
package com.k2data.k2app;
import lombok.extern.log4j.Log4j2;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@Log4j2
@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
        log.info("SpringBoot Start Success");
    }
}

controller

代码语言：javascript复制

package com.k2data.k2app.controller;

import com.k2data.k2app.service.RedisService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiImplicitParam;
import io.swagger.annotations.ApiImplicitParams;
import io.swagger.annotations.ApiOperation;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

/**
 * @Author cuilibo@k2data.com.cn
 * @Date 17-12-27 下午2:57.
 */
@Api(description = "redis")
@RestController
@RequestMapping("/redis")
public class TestWebController {
    @Autowired
    private RedisService redisService;

    @ApiOperation(value = "打印测试")
    @GetMapping(value = "/echo")
    public String echo() {
        return "Hello init Docker!!!!!!!!!!!!!!!!!!!";
    }
    @ApiOperation(value = "获取key的value")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "key", value = "key", required = true, dataType = "Long", paramType = "path")
    })
    @GetMapping(value = "/redis/get/{key}")
    public String rGet(@PathVariable("key") String key) {
        Object vString = redisService.get(key);
        System.out.println("redisService:"   vString);
        return "Redis Value:"   vString;
    }
    @ApiOperation(value = "设置key的value")
    @ApiImplicitParams({
            @ApiImplicitParam(name = "key", value = "key", required = true, dataType = "Long", paramType = "path"),
            @ApiImplicitParam(name = "value", value = "value", required = true, dataType = "Long", paramType = "path")
    })
     @GetMapping(value = "/redis/set/{key}/{value}")
    public String rSet(@PathVariable("key") String key, @PathVariable("value") String value) {
        redisService.set(key, value);
        System.out.println("redisService:  SET OK");
        return "Redis Value: SET OK key:"   key   ",value:"   value;
    }
}

service

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package com.k2data.k2app.service;

import com.k2data.k2app.util.RedisUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * @Author cuilibo@k2data.com.cn
 * @Date 17-12-27 下午2:58.
 */
@Service
public class RedisService {
    @Autowired
    private RedisUtils redisUtils;

    public Object get(String key) {
        return redisUtils.getValue(key);
    }

    public void set(String key, String value) {
        redisUtils.setValue(key, value);
    }
}

RedisUtils

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package com.k2data.k2app.util;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Component;

import java.io.Serializable;
import java.util.List;
import java.util.Set;
import java.util.concurrent.TimeUnit;

/**
 * @Author cuilibo@k2data.com.cn
 * @Date 17-12-27 下午2:58.
 */
@Component
public class RedisUtils {
    @Autowired
    private RedisTemplate redisTemplate;

    public void setValue(String key, String value) {
        redisTemplate.opsForValue().set(key, value);
    }

    public Object getValue(String key) {
        return redisTemplate.opsForValue().get(key);
    }
    /**
     * 写入缓存
     * @param key
     * @param value
     * @return
     */
    public boolean set(final String key, Object value) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
    /**
     * 写入缓存设置时效时间
     * @param key
     * @param value
     * @return
     */
    public boolean set(final String key, Object value, Long expireTime) {
        boolean result = false;
        try {
            ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
            operations.set(key, value);
            redisTemplate.expire(key, expireTime, TimeUnit.SECONDS);
            result = true;
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }
    /**
     * 批量删除对应的value
     * @param keys
     */
    public void remove(final String... keys) {
        for (String key : keys) {
            remove(key);
        }
    }

    /**
     * 批量删除key
     * @param pattern
     */
    public void removePattern(final String pattern) {
        Set<Serializable> keys = redisTemplate.keys(pattern);
        if (keys.size() > 0)
            redisTemplate.delete(keys);
    }
    /**
     * 删除对应的value
     * @param key
     */
    public void remove(final String key) {
        if (exists(key)) {
            redisTemplate.delete(key);
        }
    }
    /**
     * 判断缓存中是否有对应的value
     * @param key
     * @return
     */
    public boolean exists(final String key) {
        return redisTemplate.hasKey(key);
    }
    /**
     * 读取缓存
     * @param key
     * @return
     */
    public Object get(final String key) {
        Object result = null;
        ValueOperations<Serializable, Object> operations = redisTemplate.opsForValue();
        result = operations.get(key);
        return result;
    }
    /**
     * 哈希 添加
     * @param key
     * @param hashKey
     * @param value
     */
    public void hmSet(String key, Object hashKey, Object value){
        HashOperations<String, Object, Object> hash = redisTemplate.opsForHash();
        hash.put(key,hashKey,value);
    }

    /**
     * 哈希获取数据
     * @param key
     * @param hashKey
     * @return
     */
    public Object hmGet(String key, Object hashKey){
        HashOperations<String, Object, Object>  hash = redisTemplate.opsForHash();
        return hash.get(key,hashKey);
    }

    /**
     * 列表添加
     * @param k
     * @param v
     */
    public void lPush(String k,Object v){
        ListOperations<String, Object> list = redisTemplate.opsForList();
        list.rightPush(k,v);
    }

    /**
     * 列表获取
     * @param k
     * @param l
     * @param l1
     * @return
     */
    public List<Object> lRange(String k, long l, long l1){
        ListOperations<String, Object> list = redisTemplate.opsForList();
        return list.range(k,l,l1);
    }

    /**
     * 集合添加
     * @param key
     * @param value
     */
    public void add(String key,Object value){
        SetOperations<String, Object> set = redisTemplate.opsForSet();
        set.add(key,value);
    }

    /**
     * 集合获取
     * @param key
     * @return
     */
    public Set<Object> setMembers(String key){
        SetOperations<String, Object> set = redisTemplate.opsForSet();
        return set.members(key);
    }

    /**
     * 有序集合添加
     * @param key
     * @param value
     * @param scoure
     */
    public void zAdd(String key,Object value,double scoure){
        ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
        zset.add(key,value,scoure);
    }

    /**
     * 有序集合获取
     * @param key
     * @param scoure
     * @param scoure1
     * @return
     */
    public Set<Object> rangeByScore(String key,double scoure,double scoure1){
        ZSetOperations<String, Object> zset = redisTemplate.opsForZSet();
        return zset.rangeByScore(key, scoure, scoure1);
    }
}

RedisConfig

代码语言：javascript复制
package com.k2data.k2app;

import com.fasterxml.jackson.annotation.JsonAutoDetect;
import com.fasterxml.jackson.annotation.PropertyAccessor;
import com.fasterxml.jackson.databind.ObjectMapper;
import org.springframework.cache.CacheManager;
import org.springframework.cache.annotation.CachingConfigurerSupport;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.cache.interceptor.KeyGenerator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.redis.cache.RedisCacheManager;
import org.springframework.data.redis.connection.RedisConnectionFactory;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.StringRedisTemplate;
import org.springframework.data.redis.serializer.Jackson2JsonRedisSerializer;

import java.lang.reflect.Method;

/**
 * @Author cuilibo@k2data.com.cn
 * @Date 17-12-27 下午3:04.
 */

@Configuration
@EnableCaching
public class RedisConfig extends CachingConfigurerSupport {
    /**
     * 生成key的策略
     * @return
     */
    @Override
    @Bean
    public KeyGenerator keyGenerator() {
        return new KeyGenerator() {
            @Override
            public Object generate(Object target, Method method, Object... params) {
                StringBuilder sb = new StringBuilder();
                sb.append(target.getClass().getName());
                sb.append(method.getName());
                for (Object obj : params) {
                    sb.append(obj.toString());
                }
                return sb.toString();
            }
        };
    }

    /**
     * 管理缓存
     */
    @Bean
    public CacheManager cacheManager(RedisTemplate redisTemplate) {
        RedisCacheManager rcm = new RedisCacheManager(redisTemplate);
        return rcm;
    }

    /**
     * RedisTemplate配置
     */
    @Bean
    public RedisTemplate<String, String> redisTemplate(RedisConnectionFactory factory) {
        StringRedisTemplate template = new StringRedisTemplate(factory);
        Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
        ObjectMapper om = new ObjectMapper();
        om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
        om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
        jackson2JsonRedisSerializer.setObjectMapper(om);
        template.setValueSerializer(jackson2JsonRedisSerializer);
        template.afterPropertiesSet();
        return template;
    }
}

配置文件

代码语言：javascript复制
spring:
  redis:
    database: 0
    host: localhost
    port: 6379
    password: foobared

访问： http://localhost:8189/swagger-ui.html#

缓存 ubuntu 云数据库Redis® linux 容器

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