1. Integration ideas:
1.1 Add rely mybatis
1.2 the configuration data in the configuration file source information
1.3 Interface mapeer write pojo mapper mapping file
1.4 adding the master boot class @MapperScan
1.5 server start springboot
2. Start the deployment project:
2.1: Adding rely mybatis
<! - Integration Integration of springboot and mybatis -> < Dependencies > < dependency > < the groupId > org.mybatis.spring.boot </ the groupId > < the artifactId > mybatis-springboot-Starter </ the artifactId > < Version > 1.1.1 </ Version > </ dependency > </ Dependencies > <-! the mapper interface mapper mapper mapping file in dependence on the next packet mapper required -> < Build > <resources> <resource> <directory>src/main/java</directory> <includes> <include>**/*.properties</include> <include>**/*.xml</include> </includes> <filtering>false</filtering> </resource> <resource> <directory>src/main/resources</directory> <includes> <include>**/*.*</include> </includes> <filtering>false</filtering> </resource> </resources> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build>
2.2: configuration data source information in the configuration file application.yml
#DB Configation JPA Configation
spring:
datasource:
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql://localhost:3306/test
username: root
password: root
jpa:
database: MySQL
generate-ddl: true
show-sql: true
write pojo mapper interfaces mapeer mapping file
If you do not want to interfaces and mapping files in a package under, you will encounter:
错误:org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.offcn.mapper.UserMapper.getUserList
Solution:
A mapping file into exactly the same directory structure directory resources
2. According to the above configuration dependent plug behind to
mapper interfaces:
package com.xhn.mapper; import com.xhn.pojo.Muser; import java.util.List; public interface MuserMapper { List<Muser> getUserList(); }
mapeer mapping file:
<?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.xhn.mapper.MuserMapper"> <select id="getUserList" resultType="com.xhn.pojo.Muser"> select * from user </select> </mapper>
Corresponding to the writing controller interface methods:
package com.xhn.controller; import com.xhn.mapper.MuserMapper; import com.xhn.pojo.Muser; import org.springframework.beans.factory.annotation.Autowired; 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 MuserMapper muserMapper; //使用mybatis查询出所有数据 @RequestMapping("/list1") public List<Muser> getUserList1(){ return muserMapper.getUserList(); } }
2.4
Package com.xhn; Import org.mybatis.spring.annotation.MapperScan; Import org.springframework.boot.SpringApplication; Import org.springframework.boot.autoconfigure.SpringBootApplication; // all interfaces mapper and mapper mapping file in the package scanning @ MapperScan (basePackages = "com.xhn.mapper" ) // add startup class @SpringBootApplication public class the StartApplication { public static void main (String [] args) { SpringApplication.run (the StartApplication. class , args); } }
2.5 server start springboot