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背景描述
项目需要将设备采集到的最新经纬度信息存入redis缓存中，方便及时查询检索。考虑到根据检索条件不同，所查询的设备不同。采取将数据以map类型存入redis缓存，在此记录一下。
实体类
注：一定要实现序列化接口
父类
public class Redis implements Serializable{ private String name; private Integer age; public String getName() { return name; } public void setName(String name) { this.name = name; } public Integer getAge() { return age; } public void setAge(Integer age) { this.age = age; }}子类
import java.io.Serializable;public class RedisCustom extends Redis { private String stuCode; public String getStuCode() { return stuCode; } public void setStuCode(String stuCode) { this.stuCode = stuCode; }}方法1°
redisTemplate.opsForHash()示例代码
@Controller@RequestMapping("/redis")public class RedisController { @Autowired private RedisTemplate redisTemplate; @RequestMapping(value = "/setRedisData", method = RequestMethod.GET) @ResponseBody public Map<String, Object> setRedisData() { RedisCustom redis1 = new RedisCustom(); redis1.setName("小明"); redis1.setAge(12); redis1.setStuCode("36"); RedisCustom redis2 = new RedisCustom(); redis2.setName("小红"); redis2.setAge(11); redis2.setStuCode("24"); //构造存入redis中的map Map<String, RedisCustom> redisDataMap = new HashMap<String, RedisCustom>(); redisDataMap.put(redis1.getName(), redis1); redisDataMap.put(redis2.getName(), redis2); //存入redis redisTemplate.opsForHash().putAll("redisTest",redisDataMap); //获取缓存内容 Map<String,RedisCustom> resultMap = redisTemplate.opsForHash().entries("redisTest"); //List<RedisCustom> reslutMapList = redisTemplate.opsForHash().values("redisTest"); //Set<RedisCustom> resultMapSet = redisTemplate.opsForHash().keys("redisTest"); //RedisCustom value = (RedisCustom)redisTemplate.opsForHash().get("redisTest","小明"); return ResponseData.success(resultMap); }}结果
参考
https://www.yisu.com/article/246815.htm
方法2°
将对象转成byte[]
序列化及反序列化工具类
import java.io.*;public class SerializeObjectTool { //序列化 public static byte[] serialize(Object obj) { ObjectOutputStream obi = null; ByteArrayOutputStream bai = null; try { bai = new ByteArrayOutputStream(); obi = new ObjectOutputStream(bai); obi.writeObject(obj); byte[] byt = bai.toByteArray(); return byt; } catch (IOException e) { e.printStackTrace(); } return null; } // 反序列化 public static Object unserizlize(byte[] byt) { ObjectInputStream oii = null; ByteArrayInputStream bis = null; bis = new ByteArrayInputStream(byt); try { oii = new ObjectInputStream(bis); Object obj = oii.readObject(); return obj; } catch (Exception e) { e.printStackTrace(); } return null; }}示例代码
@Controller@RequestMapping("/redis")public class RedisController { @RequestMapping(value = "/setRedisData", method = RequestMethod.GET) @ResponseBody public Map<String, Object> setRedisData() { RedisCustom redis1 = new RedisCustom(); redis1.setName("小明"); redis1.setAge(12); redis1.setStuCode("36"); RedisCustom redis2 = new RedisCustom(); redis2.setName("小红"); redis2.setAge(11); redis2.setStuCode("24"); //构造存入redis中的map Map<String, RedisCustom> redisDataMap = new HashMap<String, RedisCustom>(); redisDataMap.put(redis1.getName(), redis1); redisDataMap.put(redis2.getName(), redis2); //连接redis Jedis redis = new Jedis("xx.xx.xxx.xx", 6379); redis.auth("xxxxxxxxxxx"); //存 byte[] personByte = SerializeObjectTool.serialize(redisDataMap); redis.set("redisData".getBytes(), personByte); //取 byte[] byt = redis.get("redisData".getBytes()); Object obj = SerializeObjectTool.unserizlize(byt); Map<String, RedisCustom> redisData = (Map<String, RedisCustom>) obj; return ResponseData.success(redisData); }}关于“Java redis存Map对象类型数据怎么实现”的内容就介绍到这里了，感谢大家的阅读。如果想了解更多行业相关的知识，可以关注编程网行业资讯频道，小编每天都会为大家更新不同的知识点。
