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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
|
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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
|
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°
|
1
|
redisTemplate.opsForHash() |
示例代码
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
@Controller@RequestMapping("/redis")public class RedisController { @Autowired private RedisTemplate redisTemplate; /** * @param * @return */ @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
方法2°
将对象转成byte[]
序列化及反序列化工具类
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
import java.io.*;/** * 序列化及反序列化工具类 */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
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
|
@Controller@RequestMapping("/redis")public class RedisController { /** * @param * @return */ @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); }} |
参考
https://blog.csdn.net/chris_111x/article/details/85236458
到此这篇关于Java redis存Map对象类型数据的实现的文章就介绍到这了,更多相关Java redis存Map对象类型内容请搜索服务器之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持服务器之家！
原文链接：https://blog.csdn.net/qq_28869233/article/details/95094968
