创建项目：
加入MybatisPlus依赖
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.3.1.tmp</version>
</dependency>
Property 'sqlSessionFactory' or 'sqlSessionTemplate' are required
解决方案：
使用分页时，还得添加一下代码
package com.mp.mpspringboot.config;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;
//Spring boot方式
@Configuration
@ConditionalOnClass(value = {PaginationInterceptor.class})
public class MybatisPlusConfig {
@Bean
public PaginationInterceptor paginationInterceptor() {
// PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
// // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求 默认false
// // paginationInterceptor.setOverflow(false);
// // 设置最大单页限制数量，默认 500 条，-1 不受限制
// // paginationInterceptor.setLimit(500);
// // 开启 count 的 join 优化,只针对部分 left join
// paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
// return paginationInterceptor;
return new PaginationInterceptor();
}
}
添加依赖
<!--mybatisplus-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.2.0</version>
</dependency>
详细代码：
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.4.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.mp</groupId>
<artifactId>mpspringboot</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>mpspringboot</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jdbc</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
<!--mybatisplus-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.2.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
MybatisPlusConfig
package com.mp.mpspringboot.config;
import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import com.baomidou.mybatisplus.extension.plugins.pagination.optimize.JsqlParserCountOptimize;
import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;
//Spring boot方式
@Configuration
@ConditionalOnClass(value = {PaginationInterceptor.class})
public class MybatisPlusConfig {
@Bean
public PaginationInterceptor paginationInterceptor() {
// PaginationInterceptor paginationInterceptor = new PaginationInterceptor();
// // 设置请求的页面大于最大页后操作， true调回到首页，false 继续请求 默认false
// // paginationInterceptor.setOverflow(false);
// // 设置最大单页限制数量，默认 500 条，-1 不受限制
// // paginationInterceptor.setLimit(500);
// // 开启 count 的 join 优化,只针对部分 left join
// paginationInterceptor.setCountSqlParser(new JsqlParserCountOptimize(true));
// return paginationInterceptor;
return new PaginationInterceptor();
}
}
User
package com.mp.mpspringboot.domain;
import com.baomidou.mybatisplus.annotation.TableName;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;
import java.io.Serializable;
import java.util.Date;
@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString
@TableName("user")//建立User.class和user表的一种关系
public class User implements Serializable {
private Integer id;
private String name;
private String address;
private Date birth;
}
UserMapper
package com.mp.mpspringboot.mapper;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.mp.mpspringboot.domain.User;
import org.apache.ibatis.annotations.Mapper;
public interface UserMapper extends BaseMapper<User> {
}
UserMapper.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.mp.mpspringboot.mapper.UserMapper" >
</mapper>
application.yml配置文件
#数据源
spring:
datasource:
#数据源配置
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost/crm?useUnicode=true&characterEncoding=utf8&useSSL=true&serverTimezone=UTC
username: root
password: 123456
#配置mybatisplus
mybatis-plus:
mapper-locations:
classpath: mapper/*Mapper.xml
global-config:
db-config:
id-type: auto
启动器
package com.mp.mpspringboot;
//import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.annotation.MapperScan;
import org.mybatis.spring.annotation.MapperScans;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration;
@SpringBootApplication
@MapperScan(basePackages = {"com.mp.mpspringboot.mapper"})
public class MpspringbootApplication {
public static void main(String[] args) {
SpringApplication.run(MpspringbootApplication.class, args);
}
}
package com.mp.mpspringboot;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.mp.mpspringboot.domain.User;
import com.mp.mpspringboot.mapper.UserMapper;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import java.util.Date;
import java.util.List;
@SpringBootTest
class MpspringbootApplicationTests {
@Autowired
private UserMapper userMapper;
@Test
void contextLoads() {
System.out.println(userMapper);
}
@Test
void addUser(){
userMapper.insert(new User(null,"zhouzhou","hongkong",new Date()));
}
@Test
public void queryForPage(){
IPage<User> page=new Page<>(1,2);
userMapper.selectPage(page, null);
System.out.println("总条数："+page.getTotal());
List<User> list=page.getRecords();
for (User user : list) {
System.out.println(user);
}
}
}
来源：CSDN
作者：zhouzhou_98
链接：https://blog.csdn.net/zhouzhou_98/article/details/104228676