分页查询

1.使用分页插件pagehelper

1.1pom文件

<!--数据库：druid连接池-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.6</version>
</dependency>
<!--数据库：postgresql驱动-->
<dependency>
    <groupId>org.postgresql</groupId>
    <artifactId>postgresql</artifactId>
    <version>9.4.1208</version>
</dependency>
<!--数据库：mapper-->
<dependency>
    <groupId>tk.mybatis</groupId>
    <artifactId>mapper-spring-boot-starter</artifactId>
    <version>1.2.4</version>
</dependency>
<!--分页插件：pagehelper-->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper-spring-boot-starter</artifactId>
    <version>1.2.4</version>
</dependency>
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.7</version>
</dependency>

1.2 application文件

# mybatis 配置
mybatis:
  mapper-locations: classpath:mapper/*.xml
  configuration:
  #控制台输出SQL操作语句
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
#分页插件配置
pagehelper:
    helperDialect: postgresql
    reasonable: true
    support-methods-arguments: true
    params: count=countSql

1.3 实体

 

 1.4 mapper文件

 

 

 

 

 

 1.5分页实现

 

 

 

2.mybatis-plus分页

2.1pom文件

<!--数据库：druid连接池-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.6</version>
</dependency>
<!--数据库：postgresql驱动-->
<dependency>
    <groupId>org.postgresql</groupId>
    <artifactId>postgresql</artifactId>
    <version>9.4.1208</version>
</dependency>
<!--mybatis plus-->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.2.0</version>
</dependency>

2.2application配置

#mybatis相关配置
mybatis:
  mapper-locations: classpath:mapper/*.xml
  configuration:
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

 

2.3分页插件类

 

 2.4实体类

 

2.5分页实现

 

 

 

 3.结束