前言：
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分页类：com.baomidou.mybatisplus.extension.plugins.pagination.dialects.MySqlDialect，com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor，com.baomidou.mybatisplus.extension.plugins.pagination.Page。
代码
pom.xml
<properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding> <java.version>1.8</java.version> <maven.compiler.source>8</maven.compiler.source> <maven.compiler.target>8</maven.compiler.target> </properties> <dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>2.3.12.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> </dependencies> </dependencyManagement> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> </dependency> <dependency> <groupId>com.baomidou</groupId> <artifactId>mybatis-plus-boot-starter</artifactId> <version>3.4.1</version> </dependency> <!-- Driver --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>8.0.25</version> </dependency> <!-- Druid --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.22</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>1.18.20</version> <scope>provided</scope> </dependency> </dependencies> <build> <resources> <!-- 这个元素描述了项目相关或测试相关的所有资源路径 --> <resource> <directory>src/main/java</directory> <includes> <include>**/*.xml</include> </includes> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> </resource> </resources> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <version>2.3.10.RELEASE</version> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <version>3.1</version> <configuration> <source>${java.version}</source> <target>${java.version}</target> <encoding>${project.build.sourceEncoding}</encoding> <skip>true</skip> </configuration> </plugin> </plugins> </build>application.yml
server: port: 8080 tomcat: uri-encoding: utf-8 servlet: context-path: /demo#数据源配置spring: datasource: driver-class-name: com.mysql.cj.jdbc.Driver url: jdbc:mysql://132.232.30.6:3306/health_business_eden?useSSL=false&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&transformedBitIsBoolean=true&tinyInt1isBit=false&allowMultiQueries=true&serverTimezone=GMT%2B8 username: root password: root1234 type: com.alibaba.druid.pool.DruidDataSource druid: initial-size: 20 min-idle: 20 max-active: 50 max-wait: 60000 time-between-eviction-runsMillis: 60000 min-evictable-idle-timeMillis: 300000 validation-query: select 'x' FROM DUAL test-on-borrow: false test-on-return: false max-open-prepared-statements: 20 max-pool-prepared-statement-per-connection-size: 20 filters: stat: # 数据库类型 db-type: mysql # 慢SQL log-slow-sql: true # 慢SQL执行时间 slow-sql-millis: 1000 merge-sql: true initialization-mode: always connection-properties: druid.stat.mergeSql=true;druid.stat.sloSqlMillis=5000logging: level: com.what21.demo: error #com.what21.demo.mapper: debug
DemoApplication
package com.what21.demo;import org.mybatis.spring.annotation.MapperScan;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;@SpringBootApplication@MapperScan(basePackages = "com.what21.demo.mapper")public class DemoApplication { public static void main(String[] args) { SpringApplication.run(DemoApplication.class,args); }}Model
package com.what21.demo.model;import com.baomidou.mybatisplus.annotation.IdType;import com.baomidou.mybatisplus.annotation.TableId;import com.baomidou.mybatisplus.annotation.TableName;import lombok.Data;import java.util.Date;@TableName("employee")@Datapublic class Employee{ @TableId(value = "id", type = IdType.AUTO) private Long id; private String domain; private String name; private String email; private String gender; private Integer age; private Date createTime;}EmployeeMapper
package com.what21.demo.mapper;import com.baomidou.mybatisplus.core.mapper.BaseMapper;import com.baomidou.mybatisplus.extension.plugins.pagination.Page;import com.what21.demo.model.Employee;import org.springframework.stereotype.Repository;import java.util.List;import java.util.Map;@Repositorypublic interface EmployeeMapper extends BaseMapper<Employee> { public List<Employee> pageList(Page<Employee> page, Map<String, Object> paramsMap);}EmployeeMapper.xml
<?xml version="1.0" encoding="UTF-8"?><!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" ";><mapper namespace="com.what21.demo.mapper.EmployeeMapper"> <resultMap id="employeeResultMap" type="com.what21.demo.model.Employee"> <id column="id" property="id"/> <result column="domain" property="domain"/> <result column="name" property="name"/> <result column="email" property="email"/> <result column="gender" property="gender"/> <result column="age" property="age"/> <result column="create_time" property="createTime"/> </resultMap> <select id="pageList" parameterType="java.util.Map" resultMap="employeeResultMap"> select * from `employee` </select></mapper>
测试：
package com.what21.demo.mapper;import com.baomidou.mybatisplus.extension.plugins.pagination.Page;import com.what21.demo.DemoApplication;import com.what21.demo.model.Employee;import org.junit.Test;import org.junit.runner.RunWith;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.test.context.SpringBootTest;import org.springframework.test.context.junit4.SpringRunner;import java.util.HashMap;import java.util.List;import java.util.Map;@RunWith(SpringRunner.class)@SpringBootTest(classes = DemoApplication.class)public class EmployeeMapperTest { @Autowired EmployeeMapper employeeMapper; @Test public void testPageList() { Page<Employee> page = new Page<>(2, 10); Map<String, Object> paramsMap = new HashMap<>(); List<Employee> dataList = employeeMapper.pageList(page, paramsMap); page.setRecords(dataList); System.out.println("当前页=>" + page.getCurrent()); System.out.println("页大小=>" + page.getSize()); System.out.println("总页数=>" + page.getPages()); System.out.println("总记录=>" + page.getTotal()); for (Employee employee : page.getRecords()) { System.out.println(employee); } }} 版权声明：
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标签： #jdbcmysql分页
