【学习日记1】SpringBoot+MyBatis架构

发表于

今天开始写学习日记，从学习mall项目(www.macrozheng.com/#/README)开始。

  1. 初始化数据库

新建数据库mall-demo，运行sql文件：mall-demo.sql。文件内容如下：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
sql复制代码SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for pms_brand
-- ----------------------------
DROP TABLE IF EXISTS `pms_brand`;
CREATE TABLE `pms_brand` (
  `id` bigint(20) NOT NULL AUTO_INCREMENT,
  `name` varchar(64) DEFAULT NULL,
  `first_letter` varchar(8) DEFAULT NULL COMMENT '首字母',
  `sort` int(11) DEFAULT NULL,
  `factory_status` int(1) DEFAULT NULL COMMENT '是否为品牌制造商：0->不是；1->是',
  `show_status` int(1) DEFAULT NULL,
  `product_count` int(11) DEFAULT NULL COMMENT '产品数量',
  `product_comment_count` int(11) DEFAULT NULL COMMENT '产品评论数量',
  `logo` varchar(255) DEFAULT NULL COMMENT '品牌logo',
  `big_pic` varchar(255) DEFAULT NULL COMMENT '专区大图',
  `brand_story` text COMMENT '品牌故事',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=59 DEFAULT CHARSET=utf8 COMMENT='品牌表';

-- ----------------------------
-- Records of pms_brand
-- ----------------------------
INSERT INTO `pms_brand` VALUES ('1', '万和', 'W', '0', '1', '1', '100', '100', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/timg(5).jpg', '', 'Victoria\'s Secret的故事');
INSERT INTO `pms_brand` VALUES ('2', '三星', 'S', '100', '1', '1', '100', '100', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/timg (1).jpg', null, '三星的故事');
INSERT INTO `pms_brand` VALUES ('3', '华为', 'H', '100', '1', '1', '100', '100', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/17f2dd9756d9d333bee8e60ce8c03e4c_222_222.jpg', null, 'Victoria\'s Secret的故事');
INSERT INTO `pms_brand` VALUES ('4', '格力', 'G', '30', '1', '1', '100', '100', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/dc794e7e74121272bbe3ce9bc41ec8c3_222_222.jpg', null, 'Victoria\'s Secret的故事');
INSERT INTO `pms_brand` VALUES ('5', '方太', 'F', '20', '1', '1', '100', '100', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/timg (4).jpg', null, 'Victoria\'s Secret的故事');
INSERT INTO `pms_brand` VALUES ('6', '小米', 'M', '500', '1', '1', '100', '100', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/1e34aef2a409119018a4c6258e39ecfb_222_222.png', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180518/5afd7778Nf7800b75.jpg', '小米手机的故事');
INSERT INTO `pms_brand` VALUES ('21', 'OPPO', 'O', '0', '1', '1', '88', '500', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/timg(6).jpg', '', 'string');
INSERT INTO `pms_brand` VALUES ('49', '七匹狼', 'S', '200', '1', '1', '77', '400', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/18d8bc3eb13533fab466d702a0d3fd1f40345bcd.jpg', null, 'BOOB的故事');
INSERT INTO `pms_brand` VALUES ('50', '海澜之家', 'H', '200', '1', '1', '66', '300', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20190129/99d3279f1029d32b929343b09d3c72de_222_222.jpg', '', '海澜之家的故事');
INSERT INTO `pms_brand` VALUES ('51', '苹果', 'A', '200', '1', '1', '55', '200', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180607/timg.jpg', null, '苹果的故事');
INSERT INTO `pms_brand` VALUES ('58', 'NIKE', 'N', '0', '1', '1', '33', '100', 'http://macro-oss.oss-cn-shenzhen.aliyuncs.com/mall/images/20180615/timg (51).jpg', '', 'NIKE的故事');
  1. 初始化SpringBoot项目

用Spring Initializr新建SpringBoot项目：

image.png

加入SpringBoot通用依赖模块：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
xml复制代码<!--SpringBoot通用依赖模块-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-aop</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

修改MallDemoApplicationTests.java报错：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
java复制代码import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
class MallDemoApplicationTests {

    @Test
    void contextLoads() {
    }

}

以上，项目能正常运行。

  1. 集成MyBatis

加入MyBatis依赖模块：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
xml复制代码<!--MyBatis分页插件-->
        <dependency>
            <groupId>com.github.pagehelper</groupId>
            <artifactId>pagehelper-spring-boot-starter</artifactId>
            <version>1.2.10</version>
        </dependency>
        <!--集成druid连接池-->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid-spring-boot-starter</artifactId>
            <version>1.1.10</version>
        </dependency>
        <!-- MyBatis 生成器 -->
        <dependency>
            <groupId>org.mybatis.generator</groupId>
            <artifactId>mybatis-generator-core</artifactId>
            <version>1.3.3</version>
        </dependency>
        <!--Mysql数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.15</version>
        </dependency>

配置application.yml

1
2
3
4
5
6
7
8
9
10
11
12
13
yaml复制代码server:
  port: 8080

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/mall-demo?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
    username: root
    password: 

mybatis:
  mapper-locations:
    - classpath:mapper/*.xml
    - classpath*:com/**/mapper/*.xml

配置generator.properties

1
2
3
4
ini复制代码jdbc.driverClass=com.mysql.cj.jdbc.Driver
jdbc.connectionURL=jdbc:mysql://localhost:3306/mall-demo?useUnicode=true&characterEncoding=utf-8&serverTimezone=Asia/Shanghai
jdbc.userId=root
jdbc.password=

配置generatorConfig.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
xml复制代码<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
    <properties resource="generator.properties"/>
    <context id="MySqlContext" targetRuntime="MyBatis3" defaultModelType="flat">
        <property name="beginningDelimiter" value="`"/>
        <property name="endingDelimiter" value="`"/>
        <property name="javaFileEncoding" value="UTF-8"/>
        <!-- 为模型生成序列化方法-->
        <plugin type="org.mybatis.generator.plugins.SerializablePlugin"/>
        <!-- 为生成的Java模型创建一个toString方法 -->
        <plugin type="org.mybatis.generator.plugins.ToStringPlugin"/>
        <!--可以自定义生成model的代码注释-->
        <commentGenerator type="com.arielyu.mall.mbg.CommentGenerator">
            <!-- 是否去除自动生成的注释 true：是 ： false:否 -->
            <property name="suppressAllComments" value="true"/>
            <property name="suppressDate" value="true"/>
            <property name="addRemarkComments" value="true"/>
        </commentGenerator>
        <!--配置数据库连接-->
        <jdbcConnection driverClass="${jdbc.driverClass}"
                        connectionURL="${jdbc.connectionURL}"
                        userId="${jdbc.userId}"
                        password="${jdbc.password}">
            <!--解决mysql驱动升级到8.0后不生成指定数据库代码的问题-->
            <property name="nullCatalogMeansCurrent" value="true" />
        </jdbcConnection>
        <!--指定生成model的路径-->
        <javaModelGenerator targetPackage="com.arielyu.mall.mbg.model" targetProject="/Users/yuchu/Documents/Gitee/mall-demo/src/main/java"/>
        <!--指定生成mapper.xml的路径-->
        <sqlMapGenerator targetPackage="com.arielyu.mall.mbg.mapper" targetProject="/Users/yuchu/Documents/Gitee/mall-demo/src/main/resources"/>
        <!--指定生成mapper接口的的路径-->
        <javaClientGenerator type="XMLMAPPER" targetPackage="com.arielyu.mall.mbg.mapper"
                             targetProject="/Users/yuchu/Documents/Gitee/mall-demo/src/main/java"/>
        <!--生成全部表tableName设为%-->
        <table tableName="pms_brand">
            <generatedKey column="id" sqlStatement="MySql" identity="true"/>
        </table>
    </context>
</generatorConfiguration>

自定义注释生成器：

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
typescript复制代码public class CommentGenerator extends DefaultCommentGenerator {
    private boolean addRemarkComments = false;

    /**
     * 设置用户配置的参数
     */
    @Override
    public void addConfigurationProperties(Properties properties) {
        super.addConfigurationProperties(properties);
        this.addRemarkComments = StringUtility.isTrue(properties.getProperty("addRemarkComments"));
    }

    /**
     * 给字段添加注释
     */
    @Override
    public void addFieldComment(Field field, IntrospectedTable introspectedTable,
                                IntrospectedColumn introspectedColumn) {
        String remarks = introspectedColumn.getRemarks();
        //根据参数和备注信息判断是否添加备注信息
        if (addRemarkComments && StringUtility.stringHasValue(remarks)) {
            addFieldJavaDoc(field, remarks);
        }
    }

    /**
     * 给model的字段添加注释
     */
    private void addFieldJavaDoc(Field field, String remarks) {
        //文档注释开始
        field.addJavaDocLine("/**");
        //获取数据库字段的备注信息
        String[] remarkLines = remarks.split(System.getProperty("line.separator"));
        for (String remarkLine : remarkLines) {
            field.addJavaDocLine(" * " + remarkLine);
        }
        addJavadocTag(field, false);
        field.addJavaDocLine(" */");
    }

}

Generator.java

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
ini复制代码public class Generator {
    public static void main(String[] args) throws Exception {
        //MBG 执行过程中的警告信息
        List<String> warnings = new ArrayList<String>();
        //当生成的代码重复时，覆盖原代码
        boolean overwrite = true;
        //读取我们的 MBG 配置文件
        InputStream is = Generator.class.getResourceAsStream("/generatorConfig.xml");
        ConfigurationParser cp = new ConfigurationParser(warnings);
        Configuration config = cp.parseConfiguration(is);
        is.close();

        DefaultShellCallback callback = new DefaultShellCallback(overwrite);
        //创建 MBG
        MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
        //执行生成代码
        myBatisGenerator.generate(null);
        //输出警告信息
        for (String warning : warnings) {
            System.out.println(warning);
        }
    }
}

执行Generator.java，生成model和mapper。

本文转载自: 掘金

开发者博客 – 和开发相关的 这里全都有

0%