java 用redisTemplate 的 Operations存取list集合

Posted 2022-09-06 zhuyeshen

一 、存取为list类型

1. @RestController
2. @RequestMapping("/test")
3. @Slf4j
4. public class TestController
5.  
6. @Autowired
7. private RedisTemplate redisTemplate;
8.  
9. @ApiOperation("redis-savelist")
10. @PostMapping("/redis/save/list")
11. public void redisSaveList()
12. List<Person> list = getPersonList();
13. //清空
14. while (redisTemplate.opsForList().size("oowwoo") > 0)
15. redisTemplate.opsForList().leftPop("oowwoo");
17. //存储
18. redisTemplate.opsForList().rightPushAll("oowwoo", list);
19.  
20. //取出
21. List<Person> oowwoo = redisTemplate.opsForList().range("oowwoo", 0, -1);
22. log.info(">>>>>>>>>>>>>>>list = ", oowwoo.toString());
23. Iterator<Person> it = oowwoo.iterator();
24. while(it.hasNext())
25. Person p = it.next();
26. log.info("person = ", p.toString());
29.  
30. private List<Person> getPersonList()
31. Person p1 = new Person();
32. p1.setId(1L);
33. p1.setName("张一");
34. p1.setAge(11);
35.  
36. Person p2 = new Person();
37. p2.setId(2L);
38. p2.setName("张二");
39. p2.setAge(22);
40.  
41. Person p3 = new Person();
42. p3.setId(3L);
43. p3.setName("张三");
44. p3.setAge(33);
45.  
46. List<Person> list = new ArrayList<>();
47. list.add(p1);
48. list.add(p2);
49. list.add(p3);
50. return list;

 

二 、将list转为json对象存取

1. import com.alibaba.fastjson.JSON;
2. import com.alibaba.fastjson.JSONObject;
3.  
4.  
5. @Autowired
6. private StringRedisTemplate stringRedisTemplate;
7.  
8. //存
9. List<Long> businessIdList = eeFreecarriageShopService.selectBusinessIdInPromotion();
10. stringRedisTemplate.opsForValue().set(RedisConstants.FREECARRIAGE_BUSINESSIDLIST, JSON.toJSON(businessIdList).toString());
11.  
12. //取
13. String businessJsonArray = stringRedisTemplate.opsForValue().get(RedisConstants.FREECARRIAGE_BUSINESSIDLIST);
14. List<Long> businessIdList = JSONObject.parseArray(businessJsonArray, Long.class);

 
java 用redisTemplate 的 Operations存取list集合