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java：MyBatis动态SQL

1、if标签 if标签的格式 <if test="条件"> SQL片段 </if> if标签的作用当条件为true的时候就拼接SQL片段例如：根据用户名和性别查询用户，如果用户名称不为空，则用户名称作为查询条件，如果性别不为空，则性别作为查询条件 &...

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java202304java学习笔记第六十六天-ssm-mybatis中dao层实现-动态sql-foreach之2

java202304java学习笔记第六十六天-ssm-mybatis中dao层实现-动态sql-if之1

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java202304java学习笔记第六十六天-ssm-mybatis中dao层实现-动态sql-if之2

java202304java学习笔记第六十六天-ssm-mybatis中dao层实现-动态sql-foreach之1

Java：MyBatis动态SQL实践（2）

实体Person.javapackage com.mouday.pojo; import lombok.Getter; import lombok.Setter; @Setter @Getter public class Person { private Integer id; private St...

Java：MyBatis动态SQL实践（1）

项目结构$ tree . ├── README.md ├── pom.xml └── src ├── main │ ├── java │ │ └── com │ │ └── mouday │ │ ├── mapper │ │ │ ├── PersonMapper.jav...

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