@Autowired
    private PlatformTransactionManager transactionManager;

整个方法try-catch

public BaseResp xxx() throws Exception{
    BaseResp resp = new BaseResp();
    TransactionStatus transactionStatus = null;
    try{
         transactionStatus = transactionManager.getTransaction(new DefaultTransactionDefinition());
        //其他处理
        //.....
        
         transactionManager.commit(transactionStatus);
    }catch(Exception e){
        if (transactionStatus != null) {
            transactionManager.rollback(transactionStatus);
        }
        throw e;
    }
    return resp;
}