mybatis plus
- 添加依赖
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>3.4.2</version>
</dependency>2.删掉application.yml中的mybatis，加上mybatis plus
# mybatis-plus配置
mybatis-plus:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
typeAliasesPackage: com.qcby.demo.entity
mapperLocations: classpath:mapper/*.xml
# 全局配置id自增
global-config:
db-config:
id-type: auto3.在demo下建立config并建立MybatisPlusConfig类
package com.qcby.demo.config;
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.extension.plugins.MybatisPlusInterceptor;
import com.baomidou.mybatisplus.extension.plugins.inner.PaginationInnerInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
//启动的移过来
@MapperScan("com.qcby.demo.mapper")
@Configuration
public class MybatisPlusConfig {
// 最新版
@Bean // <bean id=""/>
public MybatisPlusInterceptor mybatisPlusInterceptor() {
MybatisPlusInterceptor interceptor = new MybatisPlusInterceptor();
interceptor.addInnerInterceptor(new PaginationInnerInterceptor(DbType.MYSQL));
return interceptor;
}
}4.测试跟分页
package com.qcby.demo.controller;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.qcby.demo.entity.User;
import com.qcby.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
@RequestMapping("user")
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("listAll")
public List<User> listAll(){
return userService.listAll();
}
@RequestMapping("listAll1")
public List<User> listAll1(){
return userService.list();
}
@RequestMapping("listPage")
public IPage listPage(int pageNo,int pageSize,User user){
Page<User> page = new Page<>(pageNo,pageSize);
QueryWrapper<User> queryWrapper = new QueryWrapper<>();
if(!StringUtils.isEmpty(user.getUsername())){
queryWrapper.like("username",user.getUsername());
}
IPage<User> pageInfo = userService.page(page);
return pageInfo;
}
}
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