今天就跟大家聊聊有关使用Spring Boot如何对Mybatis进行整合,可能很多人都不太了解,为了让大家更加了解,小编给大家总结了以下内容,希望大家根据这篇文章可以有所收获。
依赖配置
结合前面的内容,这里我们要嵌入数据库的操作,这里以操作MySQL为例整合Mybatis,首先需要在原来的基础上添加以下依赖
<!-- mybatis依赖 --><dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version></dependency>
当然啦,只依赖mybatis是不够的还需要依赖jdbc驱动以及返回json数据的json库(格式化数据)
<!-- MySql驱动 --><dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-jdbc</artifactId></dependency><dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.21</version></dependency><!--Json库的依赖 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.43</version></dependency>
应用配置
接着需要在application.properties中添加数据库配置
#JDBC配置spring.datasource.url=jdbc:mysql://127.0.0.1:3306/weibo?useUnicode=true&characterEncoding=gbk&zeroDateTimeBehavior=convertToNullspring.datasource.username=rootspring.datasource.password=rootspring.datasource.driver-class-name=com.mysql.jdbc.Driver
这里连接的数据库名叫weibo,其中表结构如下:
接下来就需要来具体的初始化MyBatis配置以及数据表的操作了,先看一下工程结构
编写配置类
数据库相关的DataSource,SqlSeesion配置,其中DataSourse的配置可以理解为解读application.properties中的jdbc相关配置然后初始化JDBC驱动的,SqlSeesion配置主要是针对Mybatis使用事务操作时的配置信息。
package com.example.demo.config;import javax.sql.DataSource;import org.apache.ibatis.session.SqlSessionFactory;import org.mybatis.spring.SqlSessionFactoryBean;import org.mybatis.spring.annotation.MapperScan;import org.springframework.boot.autoconfigure.EnableAutoConfiguration;import org.springframework.boot.context.properties.ConfigurationProperties;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.ComponentScan;import org.springframework.core.io.support.PathMatchingResourcePatternResolver;import org.springframework.jdbc.datasource.DataSourceTransactionManager;import org.springframework.transaction.PlatformTransactionManager;@EnableAutoConfiguration@ComponentScan@MapperScan("com.example.demo.mapper")public class JdbcConfig { // DataSource配置 @Bean @ConfigurationProperties(prefix = "spring.datasource") public DataSource dataSource() { return new org.apache.tomcat.jdbc.pool.DataSource(); } // 提供SqlSeesion(数据库事务操作相关的配置) @Bean public SqlSessionFactory sqlSessionFactoryBean() throws Exception { SqlSessionFactoryBean sqlSessionFactoryBean = new SqlSessionFactoryBean(); sqlSessionFactoryBean.setDataSource(dataSource()); PathMatchingResourcePatternResolver resolver = new PathMatchingResourcePatternResolver(); sqlSessionFactoryBean.setMapperLocations(resolver.getResources("classpath:/mybatis/*.xml")); return sqlSessionFactoryBean.getObject(); } @Bean public PlatformTransactionManager transactionManager() { return new DataSourceTransactionManager(dataSource()); }}
添加Pojo类
该类主要接收数据表中的数据,所以属性基本上跟数据表的属性一致
package com.example.demo.bean;public class Diary { private int id; private String title; private String content; private String pubTime; private int userId; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public String getPubTime() { return pubTime; } public void setPubTime(String pubTime) { this.pubTime = pubTime; } public int getUserId() { return userId; } public void setUserId(int userId) { this.userId = userId; } @Override public String toString() { return "Diary [id=" + id + ", title=" + title + ", content=" + content + ", pubTime=" + pubTime + ", userId=" + userId + "]"; }}
添加数据表操作接口
该类描述了操作数据表的过程,SprintBoot在运行中会根据类上的@Mapper注解找到它,因此不能落下这个注解
package com.example.demo.mapper;import org.apache.ibatis.annotations.Mapper;import org.apache.ibatis.annotations.Param;import org.apache.ibatis.annotations.Select;import com.example.demo.bean.Diary;@Mapperpublic interface DiaryMapper { @Select("select * from diary where _id = #{id}") public Diary getDiaryById(@Param("id")Integer id);}
使用
package com.example.demo.controller;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;import com.alibaba.fastjson.JSON;import com.example.demo.bean.Diary;import com.example.demo.mapper.DiaryMapper;@RestControllerpublic class DiaryMappingController { @Autowired DiaryMapper diaryMapper; @RequestMapping("/diary") public String getDiary(Integer id){ Diary d = diaryMapper.getDiaryById(id); String json = JSON.toJSONString(d); return json; }}
最后运行SpringBoot项目,然后在浏览器上输入网址:
http://localhost:8080/diary?id=2
这样即可看到结果
看完上述内容,你们对使用Spring Boot如何对Mybatis进行整合有进一步的了解吗?如果还想了解更多知识或者相关内容,请关注编程网行业资讯频道,感谢大家的支持。