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SpringBoot依赖之Spring Data Redis的功能抽离公共服务

前几期我们针对在SpringBoot中的 Spring Data Redis 依赖对Redis不同类型的存储格式进行了细分学习,今天在这里进行汇总,当然如果你的项目使用的是Spring Data Redis这个原生官方以来,下面的汇总类RedisService 也可以作为公共类用在你们的项目当中。

项目学习代码地址

往期文章

SpringBoot依赖之Spring Data Redis 一 String类型

SpringBoot依赖之Spring Data Redis 一 List 类型

SpringBoot依赖之Spring Data Redis 一 Hash类型

SpringBoot依赖之Spring Data Redis一集合Set

SpringBoot依赖之Spring Data Redis一有序集合Sorted Set

SpringBoot依赖之Spring Data Redis实现位图Bitmap

SpringBoot依赖之Spring Data Redis 实现地理坐标(Geospatial)

我们可以在 RedisServiceRedisController 中实现对 Redis 其他几种类型(String、List、Set、Sorted Set、Bitmap、HyperLogLog 等)的操作。以下是所有 Redis 数据类型的实现。

1. 更新 Redis 服务类

文中涉及的学习代码地址

RedisService 类中添加所有类型的操作方法。

package com.dependencies.springdataredis;

import org.springframework.data.domain.Range;
import org.springframework.data.geo.Circle;
import org.springframework.data.geo.Distance;
import org.springframework.data.geo.GeoResult;
import org.springframework.data.geo.Point;
import org.springframework.data.redis.connection.*;
import org.springframework.data.redis.core.*;
import org.springframework.stereotype.Service;

import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * @author zhizhou   2024/8/17 12:01
 */
@Service
public class RedisService {
    
    private final RedisTemplate<String, Object> redisTemplate;
    private final HashOperations<String, String, Object> hashOperations;
    private final ListOperations<String, Object> listOperations;
    private final ValueOperations<String, Object> valueOperations;
    private final SetOperations<String, Object> setOperations;
    private final ZSetOperations<String, Object> zSetOperations;
    private final HyperLogLogOperations<String, Object> hyperLogLogOperations;
    private final GeoOperations<String, Object> geoOperations;
    
    public RedisService(RedisTemplate<String, Object> redisTemplate) {
        this.redisTemplate = redisTemplate;
        this.valueOperations = redisTemplate.opsForValue();
        this.hashOperations = redisTemplate.opsForHash();
        this.listOperations = redisTemplate.opsForList();
        this.setOperations = redisTemplate.opsForSet();
        this.zSetOperations = redisTemplate.opsForZSet();
        this.hyperLogLogOperations = redisTemplate.opsForHyperLogLog();
        this.geoOperations = redisTemplate.opsForGeo();
    }
    
    public void saveValue(String key, String value) {
        redisTemplate.opsForValue().set(key, value);
    }
    
    public String getValue(String key) {
        return (String) redisTemplate.opsForValue().get(key);
    }
    
    //hash
    
    // 保存哈希数据
    public void saveToHash(String key, String field, String value) {
        hashOperations.put(key, field, value);
    }
    
    // 从哈希中获取数据
    public String getFromHash(String key, String field) {
        return (String) hashOperations.get(key, field);
    }
    
    // 删除哈希中的某个字段
    public void deleteFromHash(String key, String field) {
        hashOperations.delete(key, field);
    }
    
    // 获取哈希中的所有键值对
    public Map<String, Object> getAllFromHash(String key) {
        return hashOperations.entries(key);
    }
    
    //list
    
    // 向列表左侧推入值
    public void pushToListLeft(String key, String value) {
        listOperations.leftPush(key, value);
    }
    
    // 向列表右侧推入值
    public void pushToListRight(String key, String value) {
        listOperations.rightPush(key, value);
    }
    
    // 从列表左侧弹出值
    public String popFromListLeft(String key) {
        return (String) listOperations.leftPop(key);
    }
    
    // 从列表右侧弹出值
    public String popFromListRight(String key) {
        return (String) listOperations.rightPop(key);
    }
    
    // 获取列表中所有值
    public List<Object> getList(String key) {
        return listOperations.range(key, 0, -1);
    }
    
    
    //Set
    
    // Set操作
    public void addToSet(String key, String value) {
        setOperations.add(key, value);
    }
    
    public Set<Object> getSetMembers(String key) {
        return setOperations.members(key);
    }
    
    public boolean isMemberOfSet(String key, String value) {
        return setOperations.isMember(key, value);
    }
    
    public void removeFromSet(String key, String value) {
        setOperations.remove(key, value);
    }
    
    // Sorted Set操作
    public void addToSortedSet(String key, String value, double score) {
        zSetOperations.add(key, value, score);
    }
    
    public Set<Object> getSortedSetRange(String key, long start, long end) {
        return zSetOperations.range(key, start, end);
    }
    
    public void removeFromSortedSet(String key, String value) {
        zSetOperations.remove(key, value);
    }
    
    // HyperLogLog操作
    public void addToHyperLogLog(String key, String value) {
        hyperLogLogOperations.add(key, value);
    }
    
    public long countInHyperLogLog(String key) {
        return hyperLogLogOperations.size(key);
    }
    
    // Bitmap操作
    public void setBit(String key, long offset, boolean value) {
        valueOperations.setBit(key, offset, value);
    }
    
    public boolean getBit(String key, long offset) {
        return valueOperations.getBit(key, offset);
    }
    
    private static final String GEO_KEY = "locations";
    
    // 添加地理坐标
    public void addLocation(String member, double longitude, double latitude) {
        geoOperations.add(GEO_KEY, new Point(longitude, latitude), member);
    }
    
    // 根据坐标查询附近的地点
    public List<GeoResult<RedisGeoCommands.GeoLocation<Object>>> getNearbyLocations(double longitude, double latitude, double radius) {
        Circle within = new Circle(new Point(longitude, latitude), new Distance(radius, RedisGeoCommands.DistanceUnit.KILOMETERS));
        return geoOperations.radius(GEO_KEY, within).getContent();
    }
    
    // 获取两地之间的距离
    public Distance getDistance(String member1, String member2) {
        return geoOperations.distance(GEO_KEY, member1, member2, RedisGeoCommands.DistanceUnit.METERS);
    }
   
  
}

2. 更新控制器类

RedisController 中添加处理这些数据类型操作的端点。

package com.dependencies.springdataredis;

import org.springframework.data.geo.Distance;
import org.springframework.data.geo.GeoResult;
import org.springframework.data.geo.Point;
import org.springframework.data.redis.connection.RedisGeoCommands;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
import java.util.Map;
import java.util.Set;

/**
 * @author zhizhou   2024/8/17 12:02
 */
@RestController
public class RedisController {
    private final RedisService redisService;
    
    public RedisController(RedisService redisService) {
        this.redisService = redisService;
    }
    
    @GetMapping("/set")
    public String setKey(@RequestParam String key, @RequestParam String value) {
        redisService.saveValue(key, value);
        return "保存成功";
    }
    
    @GetMapping("/get")
    public String getKey(@RequestParam String key) {
        return redisService.getValue(key);
    }
     
    @GetMapping("/hash/set")
    public String setHash(@RequestParam String key, @RequestParam String field, @RequestParam String value) {
        redisService.saveToHash(key, field, value);
        return "哈希值保存成功";
    }
    
    // 获取哈希中的数据
    @GetMapping("/hash/get")
    public String getHash(@RequestParam String key, @RequestParam String field) {
        return redisService.getFromHash(key, field);
    }
    
    // 删除哈希中的某个字段
    @GetMapping("/hash/delete")
    public String deleteHashField(@RequestParam String key, @RequestParam String field) {
        redisService.deleteFromHash(key, field);
        return "哈希字段已删除";
    }
    
    // 获取哈希中的所有字段和值
    @GetMapping("/hash/getall")
    public Map<String, Object> getAllHash(@RequestParam String key) {
        return redisService.getAllFromHash(key);
    }
    
   
    // 向列表左侧推入值
    @GetMapping("/list/leftpush")
    public String leftPushToList(@RequestParam String key, @RequestParam String value) {
        redisService.pushToListLeft(key, value);
        return "值被推到列表的左侧";
    }
    
    // 向列表右侧推入值
    @GetMapping("/list/rightpush")
    public String rightPushToList(@RequestParam String key, @RequestParam String value) {
        redisService.pushToListRight(key, value);
        return "值被推到列表的右侧";
    }
    
    // 从列表左侧弹出值
    @GetMapping("/list/leftpop")
    public String leftPopFromList(@RequestParam String key) {
        return redisService.popFromListLeft(key);
    }
    
    // 从列表右侧弹出值
    @GetMapping("/list/rightpop")
    public String rightPopFromList(@RequestParam String key) {
        return redisService.popFromListRight(key);
    }
    
    // 获取列表中所有值
    @GetMapping("/list/getall")
    public List<Object> getAllFromList(@RequestParam String key) {
        return redisService.getList(key);
    }
    
    
    // Set操作
    @GetMapping("/set/add")
    public String addToSet(@RequestParam String key, @RequestParam String value) {
        redisService.addToSet(key, value);
        return "值已加入集合set";
    }
    
    @GetMapping("/set/members")
    public Set<Object> getSetMembers(@RequestParam String key) {
        return redisService.getSetMembers(key);
    }
    
    @GetMapping("/set/ismember")
    public boolean isMemberOfSet(@RequestParam String key, @RequestParam String value) {
        return redisService.isMemberOfSet(key, value);
    }
    
    @GetMapping("/set/remove")
    public String removeFromSet(@RequestParam String key, @RequestParam String value) {
        redisService.removeFromSet(key, value);
        return "值已从集合set移除";
    }
    
    // Sorted Set操作
    @GetMapping("/zset/add")
    public String addToSortedSet(@RequestParam String key, @RequestParam String value, @RequestParam double score) {
        redisService.addToSortedSet(key, value, score);
        return "值已加入有序集合sorted set";
    }
    
    @GetMapping("/zset/range")
    public Set<Object> getSortedSetRange(@RequestParam String key, @RequestParam long start, @RequestParam long end) {
        return redisService.getSortedSetRange(key, start, end);
    }
    
    @GetMapping("/zset/remove")
    public String removeFromSortedSet(@RequestParam String key, @RequestParam String value) {
        redisService.removeFromSortedSet(key, value);
        return "值已从有序集合sorted set移除";
    }
    
    // HyperLogLog操作
    @GetMapping("/hyperloglog/add")
    public String addToHyperLogLog(@RequestParam String key, @RequestParam String value) {
        redisService.addToHyperLogLog(key, value);
        return "Value added to HyperLogLog";
    }
    
    @GetMapping("/hyperloglog/count")
    public long countInHyperLogLog(@RequestParam String key) {
        return redisService.countInHyperLogLog(key);
    }
    
    // Bitmap操作
    @GetMapping("/bitmap/set")
    public String setBit(@RequestParam String key, @RequestParam long offset, @RequestParam boolean value) {
        redisService.setBit(key, offset, value);
        return "Bit set in bitmap";
    }
    
    @GetMapping("/bitmap/get")
    public boolean getBit(@RequestParam String key, @RequestParam long offset) {
        return redisService.getBit(key, offset);
    }
    
   
    // Geo操作
    //添加地理位置
    @GetMapping("/add-location")
    public String addLocation(@RequestParam String member, @RequestParam double longitude, @RequestParam double latitude) {
        redisService.addLocation(member, longitude, latitude);
        return "Location added.";
    }
    //查询附近的地点
    @GetMapping("/nearby")
    public List<GeoResult<RedisGeoCommands.GeoLocation<Object>>> getNearbyLocations(@RequestParam double longitude, @RequestParam double latitude, @RequestParam double radius) {
        return redisService.getNearbyLocations(longitude, latitude, radius);
    }
    //# 如果使用 Lettuce 作为客户端 lettuce
    
    //获取两地之间的距离
    @GetMapping("/distance")
    public Distance getDistance(@RequestParam String member1, @RequestParam String member2) {
        return redisService.getDistance(member1, member2);
    }
}

项目学习代码地址

3. 测试操作

启动项目后,可以通过以下 URL 测试各种 Redis 数据类型的功能:

  • String操作

    • 设置值: http://localhost:8080/set?key=myKey&value=myValue

    • 获取值: http://localhost:8080/get?key=myKey

  • List操作

    • 向列表左侧推入值: http://localhost:8080/list/leftpush?key=myList&value=value1
    • 向列表右侧推入值: http://localhost:8080/list/rightpush?key=myList&value=value2
    • 从列表左侧弹出值: http://localhost:8080/list/leftpop?key=myList
    • 从列表右侧弹出值: http://localhost:8080/list/rightpop?key=myList
    • 获取列表中所有值: http://localhost:8080/list/getall?key=myList
  • Hash操作

    • 保存哈希数据: http://localhost:8080/hash/set?key=user:1001&field=name&value=一周一志程序员

    • 获取哈希数据: http://localhost:8080/hash/get?key=user:1001&field=name

    • 删除哈希字段: http://localhost:8080/hash/delete?key=user:1001&field=name

    • 获取所有哈希数据: http://localhost:8080/hash/getall?key=user:1001

  • Set 操作:

    • 添加成员到集合: http://localhost:8080/set/add?key=mySet&value=value1
    • 获取集合中的所有成员: http://localhost:8080/set/members?key=mySet
    • 检查成员是否在集合中: http://localhost:8080/set/ismember?key=mySet&value=value1
    • 删除集合中的成员: http://localhost:8080/set/remove?key=mySet&value=value1
  • Sorted Set 操作:

    • 添加成员到有序集合: http://localhost:8080/zset/add?key=myZSet&value=value1&score=1.0
    • 获取有序集合中的成员范围: http://localhost:8080/zset/range?key=myZSet&start=0&end=-1
    • 删除有序集合中的成员: http://localhost:8080/zset/remove?key=myZSet&value=value1
  • HyperLogLog 操作:

    • 添加成员到 HyperLogLog: http://localhost:8080/hyperloglog/add?key=myHLL&value=value1
    • 获取 HyperLogLog 的基数估算: http://localhost:8080/hyperloglog/count?key=myHLL
  • Bitmap 操作:

    • 设置 Bitmap 中某个位的值: http://localhost:8080/bitmap/set?key=myBitmap&offset=7&value=true
    • 获取 Bitmap 中某个位的值: http://localhost:8080/bitmap/get?key=myBitmap&offset=7
  • Geospatial 操作:

    • 添加地理位置:http://localhost:8080/add-location?member=location1&longitude=13.361389&latitude=38.115556
    • 查询附近的地点:http://localhost:8080/nearby?longitude=13.361389&latitude=38.115556&radius=10
    • 获取两地之间的距离: http://localhost:8080/distance?member1=location1&member2=location2

4. 总结

通过这些步骤,我们在 Spring Boot 项目中成功实现了对 Redis 各种数据类型(String、List、Set、Sorted Set、Bitmap、HyperLogLog 等)的操作。可以处理和管理 Redis 中的各种复杂数据结构,适应不同的应用场景需求。汇总到此结束。关注我一起为Java程序员蓄能,努力为职业生涯续航!


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