SpringBoot+MyBatis整合開發
阿新 • • 發佈：2019-02-19
<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 http://maven.apache.org/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>org.springboot.sample</groupId> <artifactId>spring-boot-sample</artifactId> <packaging>war</packaging> <version>1.0.0.0-SNAPSHOT</version> <name>spring-boot-sample Maven Webapp</name> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.8.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <java.version>1.8</java.version> </properties> <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> <scope>test</scope> </dependency> <!-- 新增對JSP支援的依賴包 --> <dependency> <groupId>org.apache.tomcat.embed</groupId> <artifactId>tomcat-embed-jasper</artifactId> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> </dependency> <!-- 支援熱佈署 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency> <!-- 整合mybatis --> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.2.0</version> </dependency> <!-- 匯入MySQL資料庫包 --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> </dependencies> <repositories> <repository> <id>Central</id> <name>Central</name> <url>http://repo1.maven.org/maven2</url> </repository> <repository> <id>mvnrepository</id> <name>mvnrepository</name> <url>http://mvnrepository.com/</url> </repository> <repository> <id>sonatype</id> <name>sonatype</name> <url>http://www.sonatype.org/nexus/</url> </repository> </repositories> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project>
方式一：基於MyBatis註解的方式整合
1.在配置檔案application.yml中新增關於資料來源的配置
#配置資料來源
spring:
datasource:
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql:///test
username: root
password: 123
#配置springmvc的檢視
mvc:
view:
prefix: /WEB-INF/jsp/
suffix: .jsp
#定義服務埠號
server:
port: 90 2.定義資料訪問的介面及使用註解方式相關SQL語句
package com.mingde.mapper;
import java.util.List;
import org.apache.ibatis.annotations.Select;
import com.mingde.po.Student;
public interface StudentMapper {
//查詢所有學生
@Select("select * from student")
public List<Student> findAll()throws Exception;
}
3、在啟動檔案所在類中新增@MapperScan註解，用於掃描Mapper包中的所有Mapper介面
package com.mingde;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.mingde.mapper") //掃描mapper包，進行mapper的對映
public class SpringBootApplicationDemo {
public static void main(String[] args) {
SpringApplication.run(SpringBootApplicationDemo.class, args);
}
}
4.定義Service層
StudentService.javapackage com.mingde.servlet;
import java.util.List;
import com.mingde.po.Student;
public interface StudentService {
public List<Student> findAll()throws Exception;
}
StudentServiceImpl.java
package com.mingde.servlet.impl;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.mingde.mapper.StudentMapper;
import com.mingde.po.Student;
import com.mingde.servlet.StudentService;
@Service("studentService")
public class StudentServiceImpl implements StudentService {
@Autowired //也可用@Resource
private StudentMapper studentMapper;
@Override
public List<Student> findAll() throws Exception {
return studentMapper.findAll();
}
}5.定義Controller層
package com.mingde.controller;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import com.mingde.mapper.StudentMapper;
import com.mingde.po.Student;
import com.mingde.servlet.StudentService;
@Controller
@RequestMapping("student")
public class StudentController {
@Autowired
private StudentService studentService;
@Autowired
private StudentMapper studentMapper;
@RequestMapping("list")
public ModelAndView list()throws Exception{
List<Student> findAll = studentService.findAll();
return new ModelAndView("list","findAll",findAll);
}
}
方法二：基於MyBatis 的mappe.XML檔案的方式整合
1.配置application.yml檔案
#配置資料來源
spring:
datasource:
driver-class-name: com.mysql.jdbc.Driver
url: jdbc:mysql:///test
username: root
password: 123
#配置springmvc的檢視
mvc:
view:
prefix: /WEB-INF/jsp/
suffix: .jsp
#定義服務埠號
server:
port: 90
#定義MyBatis的配置
mybatis:
#定義MyBatis實體類的別名
type-aliases-package: com.mingde.po
#下面定義的是MyBatis的全域性配置檔案
config-location: classpath:mybatis/myBatisConfig.xml
#定義mapper檔案所在的位置
mapper-locations: classpath:mybatis/mapper/*.xml2.定義mybatis的全域性配置以及mapper.xml檔案
MyBatis的全域性配置<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
</configuration>mapper.xml的配置檔案
<?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.mingde.mapper.StudentMapper">
<select id="findStudents" resultType="com.mingde.po.Student" >
select * from student
</select>
</mapper>
3.定義mapper介面
package com.mingde.mapper;
import java.util.List;
import com.mingde.po.Student;
public interface StudentMapper {
public List<Student> findStudents()throws Exception;
}