依賴配置
結合前面的內容，這里我們要嵌入數據庫的操作，這里以操作MySQL為例整合Mybatis，首先需要在原來的基礎上添加以下依賴
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<!-- mybatis依賴 --><dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>1.1.1</version></dependency> |
當然啦，只依賴mybatis是不夠的還需要依賴jdbc驅動以及返回json數據的json庫(格式化數據)
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<!-- MySql驅動 --><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庫的依賴 --> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.1.43</version></dependency> |
應用配置
接著需要在application.properties中添加數據庫配置
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#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 |
這里連接的數據庫名叫weibo，其中表結構如下：
接下來就需要來具體的初始化MyBatis配置以及數據表的操作了，先看一下工程結構
編寫配置類
數據庫相關的DataSource，SqlSeesion配置，其中DataSourse的配置可以理解為解讀application.properties中的jdbc相關配置然后初始化JDBC驅動的，SqlSeesion配置主要是針對Mybatis使用事務操作時的配置信息。
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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(數據庫事務操作相關的配置) @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類
該類主要接收數據表中的數據，所以屬性基本上跟數據表的屬性一致
- 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 + "]";
- }
- }
添加數據表操作接口
該類描述了操作數據表的過程，SprintBoot在運行中會根據類上的@Mapper注解找到它，因此不能落下這個注解
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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
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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; }} |
最后運行SpringBoot項目，然后在瀏覽器上輸入網址：
http://localhost:8080/diary?id=2
這樣即可看到結果
到此SpringBoot+Mybatis的整合就完成了
源碼：https://github.com/huajianzh/spring/tree/master/springdemo
以上所述是小編給大家介紹的Spring Boot+Mybatis的整合過程，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對服務器之家網站的支持！
原文鏈接：http://blog.csdn.net/new_huiyuan/article/details/74627432
