一、存储过程 创建 CREATE DEFINER=CURRENT_USER PROCEDURE `adder`(IN a int, IN b int, OUT sum int) BEGIN DECLARE c int; if a is null then set a = 0; end if;...
一、依赖 pom <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <jdk.version>1.8</jdk.version></properties><d...