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SpringBoot 小白--1(新建项目,多环境、swagger配置,MP代码生成器)

天秋
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1. 新建项目

http://img1.sycdn.imooc.com/62bd1dc1000114e918821048.jpg


2. 多环境配置

<build>
    <!--打包的时候,删除其它环境的配置文件-->
    <resources>
        <resource>
            <directory>src/main/resources</directory>
            <excludes>
                <!--先排除application开头的配置文件-->
                <exclude>application*.properties</exclude>
            </excludes>
        </resource>

        <resource>
            <directory>src/main/resources</directory>
            <!--filtering 需要设置为 true,这样在include的时候,才会把
            配置文件中的@env@ 这个maven`变量`替换成当前环境的对应值  -->
            <filtering>true</filtering>
            <includes>
                <!--引入所需环境的配置文件-->
                <include>application.properties</include>
                <include>application-${env}.properties</include>
            </includes>
        </resource>
    </resources>
</build>

<!--maven 多环境配置-->
<profiles>
    <profile>
        <id>dev</id>
        <activation>
            <!-- activeByDefault 为 true 表示,默认激活 id为dev 的profile-->
            <activeByDefault>true</activeByDefault>
        </activation>
        <properties>
            <!--这个节点的值可以在maven的其他地方引用,可以简单理解为定义了一个叫env的变量-->
            <env>dev</env>
        </properties>
    </profile>

    <profile>
        <id>prod</id>
        <properties>
            <env>prod</env>
        </properties>
    </profile>
</profiles>

http://img1.sycdn.imooc.com/62bd1ffa000186b118821048.jpg


3. 集成Swagger3

pom.xml 中添加

<!-- swagger3 -->
<dependency>
    <groupId>io.springfox</groupId>
    <artifactId>springfox-boot-starter</artifactId>
    <version>3.0.0</version>
</dependency>

properties 中添加

spring.mvc.pathmatch.matching-strategy=ANT_PATH_MATCHER

http://img2.sycdn.imooc.com/62bd248e000184ec18821048.jpg

配置Swagger

@Configuration
public class SwaggerConfig {

    /**
     * 是否开启swagger,生产环境一般关闭,所以这里定义一个变量
     */
    private Boolean enable = true;

    /**
     * 项目应用名
     */
    private String applicationName = "项目名称";

    /**
     * 项目版本信息
     */
    private String applicationVersion = "1.0.0";

    /**
     * 项目描述信息
     */
    private String applicationDescription = "不入众,不讲理,莫劝人";

    @Bean
    public Docket docket() {
        return new Docket(DocumentationType.OAS_30)
                .enable(enable)
                .apiInfo(apiInfo())
                .select()
                .apis(RequestHandlerSelectors.withMethodAnnotation(ApiOperation.class))
                .paths(PathSelectors.any())
                .build()
                ;
    }

    private ApiInfo apiInfo() {
        return new ApiInfoBuilder()
                .title(applicationName)
                .description(applicationDescription)
                .version(applicationVersion)
                .build();
    }

}

http://img2.sycdn.imooc.com/62bd25b50001270d18821048.jpg

访问地址:http://localhost:****/swagger-ui/index.html


4. MyBatis-PLUS 代码自动生成

pom文件中添加依赖:

<!-- mybatis-plus -->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-boot-starter</artifactId>
    <version>3.4.1</version>
</dependency>

<!-- mybatis-plus-generator -->
<dependency>
    <groupId>com.baomidou</groupId>
    <artifactId>mybatis-plus-generator</artifactId>
    <version>3.4.1</version>
    <scope>test</scope>
</dependency>

<dependency>
    <groupId>org.freemarker</groupId>
    <artifactId>freemarker</artifactId>
    <version>2.3.30</version>
    <scope>test</scope>
</dependency>

<!--mysql-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

mybatis-plus官网代码生成(旧)

package com.yangxz;

import com.baomidou.mybatisplus.annotation.FieldFill;
import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.builder.ConfigBuilder;
import com.baomidou.mybatisplus.generator.config.po.TableFill;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.FileType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;
import org.junit.platform.commons.util.StringUtils;

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

// 演示例子,执行 main 方法控制台输入模块表名回车自动生成对应项目目录中
public class CodeGenerator {

    private static final String DB_URL="jdbc:mysql://localhost:端口号/数据库?useUnicode=true&useSSL=false&characterEncoding=utf8&allowPublicKeyRetrieval=true";
    private static final String DB_DRIVER_NAME="com.mysql.cj.jdbc.Driver";
    private static final String DB_USERNAME="账号";
    private static final String DB_PASSWORD="密码";

    /**
     * <p>
     * 读取控制台内容
     * </p>
     */
    public static String scanner(String tip) {
        Scanner scanner = new Scanner(System.in);
        StringBuilder help = new StringBuilder();
        help.append("请输入" + tip + ":");
        System.out.println(help.toString());
        if (scanner.hasNext()) {
            String ipt = scanner.next();
            if (StringUtils.isNotBlank(ipt)) {
                return ipt;
            }
        }
        throw new MybatisPlusException("请输入正确的" + tip + "!");
    }

    public static void main(String[] args) {

        // 代码生成器
        AutoGenerator mpg = new AutoGenerator();

        // 包配置
        PackageConfig pc = new PackageConfig();
//        pc.setModuleName(scanner("模块名"));
        pc.setParent("com.yangxz");
        mpg.setPackageInfo(pc);

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir") + "/" + pc.getModuleName();
        System.out.println(projectPath);
        gc.setOutputDir(projectPath + "/src/main/java");
        gc.setAuthor("yangxz");
        gc.setOpen(false);
        gc.setSwagger2(true); //实体属性 Swagger2 注解
        gc.setServiceName("%sService");
        mpg.setGlobalConfig(gc);

        // 数据源配置
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl(DB_URL);
        dsc.setDriverName(DB_DRIVER_NAME);
        dsc.setUsername(DB_USERNAME);
        dsc.setPassword(DB_PASSWORD);
        mpg.setDataSource(dsc);

        // 自定义配置
        InjectionConfig cfg = new InjectionConfig() {
            @Override
            public void initMap() {
                // to do nothing
            }
        };

        // 如果模板引擎是 freemarker
        String templatePath = "/templates/mapper.xml.ftl";
        // 如果模板引擎是 velocity
        // String templatePath = "/templates/mapper.xml.vm";

        // 自定义输出配置
        List<FileOutConfig> focList = new ArrayList<>();
        // 自定义配置会被优先输出
        focList.add(new FileOutConfig(templatePath) {
            @Override
            public String outputFile(TableInfo tableInfo) {
                // 自定义输出文件名 , 如果你 Entity 设置了前后缀、此处注意 xml 的名称会跟着发生变化!!
                return projectPath + "/src/main/resources/mapper/" + tableInfo.getEntityName() + "Mapper" + StringPool.DOT_XML;
            }
        });
        cfg.setFileCreate(new IFileCreate() {
            @Override
            public boolean isCreate(ConfigBuilder configBuilder, FileType fileType, String filePath) {
                return true;
            }
        });
        cfg.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

        // 配置模板
        TemplateConfig templateConfig = new TemplateConfig();

        // 配置自定义输出模板
        //指定自定义模板路径,注意不要带上.ftl/.vm, 会根据使用的模板引擎自动识别
        // templateConfig.setEntity("templates/entity2.java");
        // templateConfig.setService();
        // templateConfig.setController();

        templateConfig.setXml(null);
        mpg.setTemplate(templateConfig);

        // 策略配置
        StrategyConfig strategy = new StrategyConfig();
        strategy.setNaming(NamingStrategy.underline_to_camel);
        strategy.setColumnNaming(NamingStrategy.underline_to_camel);

        if (scanner("是否集成基类?").equalsIgnoreCase("y")) {
            /*设置实体类父类*/
            strategy.setSuperEntityClass("com.yangxz.system.entity.BaseEntity");
            // 写于父类中的公共字段
            strategy.setSuperEntityColumns("create_time", "create_account_id", "modified_time", "modified_account_id", "deleted");
        }

        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        // 公共父类
//        strategy.setSuperControllerClass("你自己的父类控制器,没有就不用设置!");

        strategy.setInclude(scanner("表名,多个英文逗号分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);

        /*设置表名前缀*/
//        strategy.setTablePrefix(pc.getModuleName() + "_");
        strategy.setTablePrefix("t_");

        /*设置逻辑删除字段*/
        strategy.setLogicDeleteFieldName("deleted");

        /*设置自动填充*/
        ArrayList<TableFill> autoFills = new ArrayList<>();
        TableFill createTime = new TableFill("create_time", FieldFill.INSERT);
        TableFill createAccountId = new TableFill("create_account_id", FieldFill.INSERT);
        TableFill modifiedTime = new TableFill("modified_time", FieldFill.UPDATE);
        TableFill modifiedAccountId = new TableFill("modified_account_id", FieldFill.UPDATE);
        autoFills.add(createTime);
        autoFills.add(createAccountId);
        autoFills.add(modifiedTime);
        autoFills.add(modifiedAccountId);
        strategy.setTableFillList(autoFills);

        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }

}

运行Code Generator.java 中的main()

http://img4.sycdn.imooc.com/62bd29df0001d47b18821048.jpg


5. 测试

1)properties文件中配置数据库连接

# 连接数据库
spring.datasource.url=jdbc:mysql://localhost:端口/数据库?useUnicode=true&useSSL=false&characterEncoding=utf8&allowPublicKeyRetrieval=true
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.username=账号
spring.datasource.password=密码

2)启动类添加注解

@MapperScan(basePackages = {"com.yangxz.mapper"})

3)UserController文件中添加测试接口,和swagger注解

package com.yangxz.controller;


import com.yangxz.entity.User;
import com.yangxz.service.UserService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

/**
 * <p>
 *  前端控制器
 * </p>
 *
 * @author yangxz
 * @since 2022-06-30
 */
@Api(tags = "用户管理")
@RestController
@RequestMapping("/user")
public class UserController {

    @Resource
    private UserService userService;

    @ApiOperation("用户列表")
    @GetMapping("/list")
    public List<User> list(){
        return userService.list();
    }

}

http://img3.sycdn.imooc.com/62bd2d2f0001125718821048.jpg

浏览器访问swagger

http://img2.sycdn.imooc.com/62bd2d960001766e19201040.jpg


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