上海网站建设公司怎么样,用html做网站的心得体会,梁山网站建设公司,建设众筹网站操作redis时候泛型、对象操作的比较频繁不可能都转成字符串然后再查询转换比较复杂了#xff0c;这个时候我们需要对存取转换进行封装便于快速开发 1、导入依赖
dependencygroupIdredis.clients/groupIdartifactIdjedis/artifactId这个时候我们需要对存取转换进行封装便于快速开发 1、导入依赖
dependencygroupIdredis.clients/groupIdartifactIdjedis/artifactIdversion2.8.1/version
/dependencydependencygroupIdorg.springframework.data/groupIdartifactIdspring-data-redis/artifactIdversion1.7.2.RELEASE/version
/dependencydependencygroupIdorg.apache.commons/groupIdartifactIdcommons-pool2/artifactIdversion2.4.2/version
/dependencydependencygroupIdcom.alibaba/groupIdartifactIdfastjson/artifactIdversion1.2.47/version
/dependencydependencygroupIdjunit/groupIdartifactIdjunit/artifactIdversion4.13.2/versionscopetest/scope
/dependency
2、Redis服务通用类
Service
public class RedisService {AutowiredJedisPool jedisPool;/*** 设置对象* param key 键* param value 值* param exTime 过期时间* param T 返回类型* return*/public T boolean set(String key,T value,int exTime) {Jedis jedis null;try {jedis jedisPool.getResource();String str beanToString(value);if (str null || str.length() 0) {return false;}//设置过期时间if(exTime 0) {jedis.set(key, str);} else {jedis.setex(key, exTime, str);}return true;} finally {returnToPool(jedis);}}/*** 根据key获取对象返回* param key* param clazz* param T* return*/public T T get(String key,ClassT clazz) {Jedis jedis null;try {jedis jedisPool.getResource();String str jedis.get(key);T t stringToBean(str,clazz);return t;}finally {returnToPool(jedis);}}/*** bean 转 String* param value* param T* return*/public static T String beanToString(T value) {if(value null) {return null;}Class? clazz value.getClass();if(clazz int.class || clazz Integer.class) {return value;}else if(clazz String.class) {return (String)value;}else if(clazz long.class || clazz Long.class) {return value;}else {return JSON.toJSONString(value);}}/*** string转bean* param str* param clazz* param T* return*/public static T T stringToBean(String str, ClassT clazz) {if(str null || str.length() 0 || clazz null) {return null;}if(clazz int.class || clazz Integer.class) {return (T)Integer.valueOf(str);}else if(clazz String.class) {return (T)str;}else if(clazz long.class || clazz Long.class) {return (T)Long.valueOf(str);}else {return (T) JSON.parseArray(str,clazz);}}/*** 关闭连接* param jedis*/private void returnToPool(Jedis jedis) {if(jedis ! null) {jedis.close();}}/*** 判断key是否存在* */public T boolean exists(String key) {Jedis jedis null;try {jedis jedisPool.getResource();return jedis.exists(key);}finally {returnToPool(jedis);}}
}3、实体类实现序列化接口
public class Test implements Serializable {}
4、测试
/*** bFunction: /b todo** program: BaseTest* Package: com.kingbal.king.dmp* author: dingcho* date: 2024/01/09* version: 1.0* Copyright: 2024 www.kingbal.com Inc. All rights reserved.*/
Slf4j
RunWith(SpringRunner.class)
SpringBootTest
public class BaseTest {Autowiredprivate RedisService redisService;Testpublic void testGetList() {ListTest testList null;String key test:list;long start System.currentTimeMillis();if(redisService.exists(key)) {System.out.println(redis 读取 key 数据);testList (ListTest) redisService.get(key, Test.class);}else{System.out.println(redis 读写入 key 数据);testList Lists.newArrayList();....redisService.set(key, testList, -1);}System.out.println(testList.size());log.error(耗时 (System.currentTimeMillis() - start));}}
