java中redis增删查以及清理缓存的案例

时间:2021-05-19

我就废话不多说了,大家还是直接看代码吧~

Controller

@ApiOperation(value = "获取信息放入Redis中") @RequestMapping(value = "/getPropertyTakeLookShoppingDetailRedis",method = RequestMethod.POST) public JsonResult getPropertyTakeLookShoppingDetailRedis(@RequestBody PropertyTakeLookRedisParam param) throws Exception { log.info("PropertyTakeLookController.getPropertyTakeLookShoppingDetailRedis:" + param); JSONObject jsonObject = propertyTakeLookWriteService.getPropertyTakeLookShoppingDetailRedis(param); log.info("PropertyTakeLookController.getPropertyTakeLookSysInfo:" + jsonObject); return JsonResult.getResult(jsonObject); }

Service

增删查区分 读缓存 = 0; 添加 =1;删除 = 2 ; 清除相应经纪人清单缓存 = 3 ")

/** * 获取信息放入Redis中 * @return * @throws Exception */ public JSONObject getPropertyTakeLookShoppingDetailRedis(PropertyTakeLookRedisParam param) throws Exception { String takeLookStr = "DKQD"; checkArgument(StringUtils.isNotBlank(param.getTakeLookUserEmpNo()), "工号不能为空!"); checkArgument(param.getSelOrAddOrRemove() != null, "增删查区分不能为空!"); String takeLookUserEmpNo = param.getTakeLookUserEmpNo(); JSONObject jsonObject; if(redisHandle.exists(takeLookUserEmpNo+takeLookStr) && param.getSelOrAddOrRemove() == 0){ jsonObject = JSONObject.parseObject(redisHandle.get(takeLookUserEmpNo+takeLookStr).toString()); } else if(param.getSelOrAddOrRemove() == 1 || param.getSelOrAddOrRemove() == 2){ Long[] effectiveIds = param.getPropertyEffectiveId(); PropertyTakeLookShoppingCartParam propertyTakeLookShoppingCartParam = new PropertyTakeLookShoppingCartParam(); BeanUtils.copyProperties(param,propertyTakeLookShoppingCartParam); propertyTakeLookShoppingCartParam.setPropertyEffectiveId(effectiveIds); //获取信息 PageInfo<?> takeLookDetail = propertytakelookService.getPropertyTakeLookShoppingCartDetail(propertyTakeLookShoppingCartParam); System.out.print("参数查看" + JsonResult.getResult(takeLookDetail).toJson()); jsonObject = JSONObject.parseObject(JsonResult.getResult(takeLookDetail).toJson()); Object jsonArray = jsonObject.get("data"); redisHandle.set(takeLookUserEmpNo+takeLookStr,jsonArray); }else if (redisHandle.exists(takeLookUserEmpNo+takeLookStr) && param.getSelOrAddOrRemove() == 3){ //物理清除缓存 redisHandle.remove(takeLookUserEmpNo+takeLookStr); jsonObject = new JSONObject(); jsonObject.put("code",ErrorCode.SUCCESS.getCode()); jsonObject.put("msg",ErrorCode.SUCCESS.getMsg()); }else { jsonObject = new JSONObject(); jsonObject.put("code",ErrorCode.SUCCESS.getCode()); jsonObject.put("msg",ErrorCode.SUCCESS.getMsg()); } return jsonObject; }

补充:java按照关键字指定的key删除redis(支持模糊删除)

pom依赖:

<dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> <version>2.5.0</version> </dependency>

代码直接可用:

import org.testng.annotations.BeforeClass;import org.testng.annotations.Test;import redis.clients.jedis.Jedis;import java.util.HashMap;import java.util.Iterator;import java.util.List;import java.util.Map;public class TestRedis { private Jedis jedis; @BeforeClass public void setup() { //连接redis服务器,ip jedis = new Jedis("ip", 6379); //权限认证 jedis.auth("123456"); } /** * 删除数据 * * * @param key:要删除数据的key * @return:返回boolean值,表示是否删除成功 */ public boolean delete(String key) { if (jedis.exists(key)) { if (jedis.del(key) == 1) { System.out.println("删除数据成功"); return true; } else { System.out.println("删除数据失败"); return false; } } else { System.out.println(key + "不存在"); return false; } } @Test public void test() { delete("age"); }}

以上为个人经验,希望能给大家一个参考,也希望大家多多支持。如有错误或未考虑完全的地方,望不吝赐教。

声明:本页内容来源网络,仅供用户参考;我单位不保证亦不表示资料全面及准确无误,也不保证亦不表示这些资料为最新信息,如因任何原因,本网内容或者用户因倚赖本网内容造成任何损失或损害,我单位将不会负任何法律责任。如涉及版权问题,请提交至online#300.cn邮箱联系删除。

相关文章