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10 大专栏 SpringBoot开发二十-Redis入门以及Spring整合Redis6
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| package com.nowcoder.community;
import org.aspectj.lang.annotation.Aspect;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.dao.DataAccessException;
import org.springframework.data.redis.core.BoundValueOperations;
import org.springframework.data.redis.core.RedisOperations;
import org.springframework.data.redis.core.RedisTemplate;
import org.springframework.data.redis.core.SessionCallback;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringRunner;
import java.util.concurrent.TimeUnit;
@RunWith(SpringRunner.class)
@SpringBootTest
@ContextConfiguration(classes = CommunityApplication.class)
public class RedisTests {
@Autowired
private RedisTemplate redisTemplate;
@Test
public void testStrings() {
String redisKey = "test:count";
redisTemplate.opsForValue().set(redisKey, 1);
System.out.println(redisTemplate.opsForValue().get(redisKey));
System.out.println(redisTemplate.opsForValue().increment(redisKey));
System.out.println(redisTemplate.opsForValue().decrement(redisKey));
}
@Test
public void testHashes() {
String redisKey = "test:user";
redisTemplate.opsForHash().put(redisKey, "id", 1);
redisTemplate.opsForHash().put(redisKey, "username", "zhangsan");
System.out.println(redisTemplate.opsForHash().get(redisKey, "id"));
System.out.println(redisTemplate.opsForHash().get(redisKey, "username"));
}
@Test
public void testLists() {
String redisKey = "test:ids";
redisTemplate.opsForList().leftPush(redisKey, 101);
redisTemplate.opsForList().leftPush(redisKey, 102);
redisTemplate.opsForList().leftPush(redisKey, 103);
System.out.println(redisTemplate.opsForList().size(redisKey));
System.out.println(redisTemplate.opsForList().index(redisKey, 0));
System.out.println(redisTemplate.opsForList().range(redisKey, 0, 2));
// 从左边弹出,左边leftpop,右边rightpop
System.out.println(redisTemplate.opsForList().leftPop(redisKey));
System.out.println(redisTemplate.opsForList().leftPop(redisKey));
System.out.println(redisTemplate.opsForList().leftPop(redisKey));
}
@Test
public void testSets() {
String redisKey = "test:teachers";
redisTemplate.opsForSet().add(redisKey, "刘备", "关羽", "张飞", "赵云", "诸葛亮");
System.out.println(redisTemplate.opsForSet().size(redisKey));
System.out.println(redisTemplate.opsForSet().pop(redisKey));
System.out.println(redisTemplate.opsForSet().members(redisKey));
}
@Test
public void testSortedSets() {
String redisKey = "test:students";
redisTemplate.opsForZSet().add(redisKey, "唐僧", 80);
redisTemplate.opsForZSet().add(redisKey, "悟空", 90);
redisTemplate.opsForZSet().add(redisKey, "八戒", 50);
redisTemplate.opsForZSet().add(redisKey, "沙僧", 70);
redisTemplate.opsForZSet().add(redisKey, "白龙马", 60);
// 统计数据
System.out.println(redisTemplate.opsForZSet().zCard(redisKey));
// 查询某个人的分数
System.out.println(redisTemplate.opsForZSet().score(redisKey, "八戒"));
// 查询排名，默认从小到大
System.out.println(redisTemplate.opsForZSet().reverseRank(redisKey, "八戒"));
// 查询区间排名数据
System.out.println(redisTemplate.opsForZSet().reverseRange(redisKey, 0, 2));
}
@Test
public void testKeys() {
redisTemplate.delete("test:user");
System.out.println(redisTemplate.hasKey("test:user"));
redisTemplate.expire("test:students", 10, TimeUnit.SECONDS);
}
// 多次访问同一个key
@Test
public void testBoundOperations() {
String redisKey = "test:count";
BoundValueOperations operations = redisTemplate.boundValueOps(redisKey);
operations.increment();
operations.increment();
operations.increment();
operations.increment();
operations.increment();
System.out.println(operations.get());
}
// Redis编程序事务，并不一定满足我们之前说过的事务，因为不是关系型数据库
@Test
public void testTransactional() {
Object obj = redisTemplate.execute(new SessionCallback() {
@Override
public Object execute(RedisOperations operations) throws DataAccessException {
String redisKey = "test:tx";
// 启用事务
operations.multi();
operations.opsForSet().add(redisKey, "zhangsan");
operations.opsForSet().add(redisKey, "lisi");
operations.opsForSet().add(redisKey, "wangwu");
System.out.println(operations.opsForSet().members(redisKey));
// 提交事务
return operations.exec();
}
});
System.out.println(obj);
}
}
|
