Spring整合MyBatis-纯注解形式(最简) - 唯荒

公告

前提: 整合MyBatis使用Idea创建Maven工程, 下图为工程目录结构

1. 导入Maven工程相关的坐标 - pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.xxx</groupId>
    <artifactId>spring-mybatis02-zh</artifactId>
    <version>1.0</version>

    <!--指定java1.8版本-->
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>
    <dependencies>
        <!--MyBatis坐标-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.5.3</version>
        </dependency>

        <!--Mybatis-spring整合坐标-->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>

        <!--druid连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.1.16</version>
        </dependency>

        <!--MySQL连接坐标-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.47</version>
        </dependency>

        <!--spring坐标-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <!--Spring-jdbc-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
        <!--Junit-单元测试坐标-->
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
        <!--Junit-spring的test-->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>5.1.9.RELEASE</version>
        </dependency>
    </dependencies>

</project>

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2. 创建jdbc的配置文件 - jdbc.properties

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/spring_db
jdbc.username=root
jdbc.password=root

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3. config - SpringConfig.java

package com.xxx.config;

import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Import;
import org.springframework.context.annotation.PropertySource;

/**
 * @author : longChuanJiang
 * @date : Created in 2020/8/24 14:07
 */
@Configuration
@ComponentScan(value = "com.xxx")
@PropertySource("classpath:jdbc.properties")
@Import({JdbcConfig.class, MyBatisConfig.class})
public class SpringConfig {
    /*
        ###########-Spring核心配置类详解-###########

        1. 开启Spring注解扫描器, 扫描Spring可识别的注解
        @ComponentScan(value = "com.xxx")
        2. 加载jdbc配置文件
        @PropertySource("classpath:jdbc.properties")
        3. 导入JdbcConfig和MyBatisConfig的配置类
        @Import({JdbcConfig.class, MyBatisConfig.class})
    */
}

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4. config - JdbcConfig.java

package com.xxx.config;

import com.alibaba.druid.pool.DruidDataSource;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;

import javax.sql.DataSource;

/**
 * @author : longChuanJiang
 * @date : Created in 2020/8/24 14:06
 */
public class JdbcConfig {

    @Value("${jdbc.driver}")
    private String driver;
    @Value("${jdbc.url}")
    private String url;
    @Value("${jdbc.username}")
    private String username;
    @Value("${jdbc.password}")
    private String password;

    @Bean
    public DataSource getDataSource() {
        DruidDataSource ds = new DruidDataSource();
        ds.setDriverClassName(driver);
        ds.setUrl(url);
        ds.setUsername(username);
        ds.setPassword(password);
        return ds;
    }

}

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5. config - MyBatisConfig.java

package com.xxx.config;

import org.mybatis.spring.SqlSessionFactoryBean;
import org.mybatis.spring.mapper.MapperScannerConfigurer;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Component;

import javax.sql.DataSource;

/**
 * @author : longChuanJiang
 * @date : Created in 2020/8/24 14:07
 */
public class MyBatisConfig {

    /**
     * 获取数据源
     *
     * @param dataSource 数据源
     * @return 数据源
     */
    @Bean
    public SqlSessionFactoryBean getSqlSessionFactoryBean(@Autowired DataSource dataSource) {
        SqlSessionFactoryBean ssfb = new SqlSessionFactoryBean();
        ssfb.setDataSource(dataSource);
        // 设置实体类的别名路径
        ssfb.setTypeAliasesPackage("com.xxx.domain");
        return ssfb;
    }

    /**
     * 注册扫描器: 扫描包下面的mapper接口
     */
    @Bean
    public MapperScannerConfigurer getMapperScannerConfigurer() {
        MapperScannerConfigurer msc = new MapperScannerConfigurer();
        // 设置MyBatis的Mapper接口路径
        msc.setBasePackage("com.xxx.dao");
        return msc;
    }
}

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6. dao - AccountDao.java(接口)

package com.xxx.dao;

import com.xxx.domain.Account;
import org.apache.ibatis.annotations.Delete;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.apache.ibatis.annotations.Update;
import org.springframework.stereotype.Component;

import java.util.List;

/**
 * @author longChuanJiang
 */
@Component
public interface AccountDao {

    @Insert("insert into account(name,money)values(#{name},#{money})")
    void save(Account account);

    @Delete("delete from account where id = #{id} ")
    void delete(Integer id);

    @Update("update account set name = #{name} , money = #{money} where id = #{id} ")
    void update(Account account);

    @Select("select * from account")
    List<Account> findAll();

    @Select("select * from account where id = #{id} ")
    Account findById(Integer id);
}

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7. doamin - Account.java

package com.xxx.domain;

import java.io.Serializable;

public class Account implements Serializable {

    private Integer id;
    private String name;
    private Double money;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

    @Override
    public String toString() {
        return "Account{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", money=" + money +
                '}';
    }
}

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8. service - AccountService.java(接口)

package com.xxx.service;

import com.xxx.domain.Account;

import java.util.List;

public interface AccountService {

    void save(Account account);

    void delete(Integer id);

    void update(Account account);

    List<Account> findAll();

    Account findById(Integer id);

}

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9. service.impl - AccountServiceImpl.java

package com.xxx.service.impl;

import com.xxx.dao.AccountDao;
import com.xxx.domain.Account;
import com.xxx.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * @author longChuanJiang
 */
@Service("accountService")
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    @Override
    public void save(Account account) {
        accountDao.save(account);
    }

    @Override
    public void update(Account account) {
        accountDao.update(account);
    }

    @Override
    public void delete(Integer id) {
        accountDao.delete(id);
    }

    @Override
    public Account findById(Integer id) {
        return accountDao.findById(id);
    }

    @Override
    public List<Account> findAll() {
        return accountDao.findAll();
    }
}

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10. 数据库源码 - spring-db.sql

/*
 Navicat Premium Data Transfer

 Source Server         : localMySQL
 Source Server Type    : MySQL
 Source Server Version : 50729
 Source Host           : localhost:3306
 Source Schema         : spring_db

 Target Server Type    : MySQL
 Target Server Version : 50729
 File Encoding         : 65001

 Date: 24/08/2020 17:30:33
*/

SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for account
-- ----------------------------
DROP TABLE IF EXISTS `account`;
CREATE TABLE `account`  (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `name` varchar(20) CHARACTER SET utf8 COLLATE utf8_general_ci NULL DEFAULT NULL,
  `money` double(255, 30) NULL DEFAULT NULL,
  PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 5 CHARACTER SET = utf8 COLLATE = utf8_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of account
-- ----------------------------
INSERT INTO `account` VALUES (1, '张三', 24.990000000000000000000000000000);
INSERT INTO `account` VALUES (2, '赵四', 26.120000000000000000000000000000);
INSERT INTO `account` VALUES (3, '王五', 19555.555000000000000000000000000000);
INSERT INTO `account` VALUES (4, 'jock', 193.222000000000000000000000000000);

SET FOREIGN_KEY_CHECKS = 1;

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11. 测试源码 - AccountServiceTest.java

package com.xxx.service;

import com.xxx.config.SpringConfig;
import com.xxx.domain.Account;
import com.xxx.service.AccountService;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import java.util.List;

/**
 * @author : longChuanJiang
 * @date : Created in 2020/8/24 14:43
 */
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(classes = SpringConfig.class)
public class AccountServiceTest {
    @Autowired
    private AccountService accountService;
    @Test
    public void findAllTest(){
        List<Account> all = accountService.findAll();
        System.out.println("all = " + all);
    }
    @Test
    public void findByIdTest(){
        Account ac = accountService.findById(4);
        System.out.println("ac = " + ac);
    }
    @Test
    public void saveTest(){
        Account account = new Account();
        account.setName("jock");
        account.setMoney(193.222);
        accountService.save(account);
        findAllTest();
    }
}

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posted on 2020-08-24 18:59 唯荒阅读(237) 评论(0) 收藏举报

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