spring-data-redis 事务操作
方法一:
@Autowired private RedisTemplate redisTemplate; /** * 事务方式一 */ @Test void testTransaction(){ //开启事务支持 //记得开启事务支持,但是不知道为何,我已经开启了,结果还是出现“ ERR EXEC without MULTI”,找不到原因,可能是redis版本问题 redisTemplate.setEnableTransactionSupport(true); //开启事务 redisTemplate.multi(); ValueOperations<String, String> stringops = redisTemplate.opsForValue(); String key="test:transaction"; stringops.set(key,"1"); ListOperations<String, String> listOps = redisTemplate.opsForList(); String key1="test:transaction2"; listOps.leftPush(key1,"1111"); System.out.println(stringops.get(key)); System.out.println(listOps.range(key1, 0, 10)); //执行事务 redisTemplate.exec(); System.out.println(stringops.get(key)); System.out.println(listOps.range(key1, 0, 10)); }
方法二:
/** * 执行事务方式二 * 这种方式网友们比较推荐 */ @Test public void testTransaction2(){ redisTemplate.execute(new SessionCallback<List<Object>>(){ @Override public List<Object> execute(RedisOperations operations) throws DataAccessException { operations.multi(); operations.opsForValue().set("name:1","walker11"); operations.opsForValue().set("name:2","walker22"); operations.opsForValue().set("name:3","walker33"); return redisTemplate.exec(); } }); }
使用discard取消事务
/** * 测试取消事务 */ @Test public void testDiscard(){ Integer flag=1; redisTemplate.execute(new SessionCallback<List<Object>>(){ @Override public List<Object> execute(RedisOperations operations) throws DataAccessException { operations.multi(); operations.opsForValue().set("name:1","walker11"); operations.opsForValue().set("name:2","walker22"); operations.opsForValue().set("name:3","walker33"); if(flag.equals(1)){ //取消事务,经测试,在使用discard之后,不能再次执行exec(),否则会出现 ERR EXEC without MULTI错误 redisTemplate.discard(); return null; } return redisTemplate.exec(); } }); }