搭建一个springboot+templates+mysql+mybatisplus代码生成器简单框架

码云源码下载

创建项目并且配置项目

1、首先点击 File---->New---->Project---->Spring Initializr---->next

2.填写项目信息–>next

intellij idea build时出现Artifact contains illegal characters的解决
3.勾选
Web=>Spring Web (或者Spring Web Starter);
SQL=> MySQL Driver，JDBC API 和 MyBatis Framework三项;
Developer Tools=>Lombok (未截图 同理选中)
Template Englines=>Thymeleaf;(未截图 同理选中)
然点击NEXT!

5 选择项目路径==>Finish

6.点击右侧的Maven，点击设置（扳手图标）进行项目Maven仓库的配置；

7.配置maven

8.如何没有自动导包,配置完可以点击左上角重新导包按钮，或者呢个下载按钮，选择下载所有源文件和文档

[.- 注意： 第八步骤结束 做其他项目的同学可以回到原先的博客了 ！！]

写一个页面从后端读取测试

9.在templates文件下新建demo.html页面，作为启动的初始页面；


10.创建controller包


11.创建一个demoController.class类
写一串跳转demo页面的代码

package com.wenjian.mywj.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
public class demoController {
    @RequestMapping("/demo")
    public String demo(){
        return "demo";
    }

}

12在resources中复制粘贴application.yml(或者新建都可以)(点击了解application.properties和application.yml的差异)

spring:
  datasource:
    name: demo  #数据库名
    url: jdbc:mysql://localhost:3306/demo #url链接
    username: root  #用户名
    password: 123456  #密码
    driver-class-name: com.mysql.jdbc.Driver  #数据库链接驱动

13.启动项目

启动成功

14 打开浏览器(我这里是谷歌)
我们先将demo.html复制粘贴一个新的index.html

templates中localhost:8080默认跳转index.html（特性）
localhost:8080/demo调用controller中的/demo跳转


15 创建数据库demo
右键新建数据库

修改如下

16右键demo数据库下面的表=>新建表user添加一条数据
如下：

16 创建架构entity包 dao包 service包 serviceImpl包 mapper包

17配置mybatis 并且在url后面添加?serverTimezone=Asia/Shanghai (不添加会报一个错误)

spring:
  datasource:
    name: demo  #数据库名
    url: jdbc:mysql://localhost:3306/demo?serverTimezone=Asia/Shanghai #url
    username: root  #用户名
    password: 123456  #密码
    driver-class-name: com.mysql.jdbc.Driver  #数据库链接驱动


mybatis:
  mapper-locations: classpath:mapper/*.xml  #配置映射文件
  type-aliases-package: com.wenjian.mywj.entity #配置实体类

18创建类
dao: UserMapper.java
entity: User.java
Service: UserService.java
ServiceImpl: UserServiceImpl.java
resources/mapper:UserMapper.xml.java

19代码如下：
（1）dao: UserMapper.java

 package com.wenjian.mywj.dao;

import com.wenjian.mywj.entity.User;

import java.util.List;

public interface UserMapper {
    List<User> getUserInfo();
}

（2）entity: User.java

package com.wenjian.mywj.entity;

import lombok.Data;

import java.util.Date;

/**
 * 若是没有配置lombok可以生成get set
 */
@Data
public class User {
    private Integer id;
    private String name;
    private String address;
    private Date birth;

  /*  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 String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public Date getBirth() {
        return birth;
    }

    public void setBirth(Date birth) {
        this.birth = birth;
    }*/
}

（3）Service: UserService.java

package com.wenjian.mywj.service;

import com.wenjian.mywj.dao.UserMapper;
import com.wenjian.mywj.entity.User;

import java.util.List;

public interface UserService {
    List<User> getUserInfo();

}

（4）ServiceImpl: UserServiceImpl.java

package com.wenjian.mywj.serviceImpl;

import com.wenjian.mywj.dao.UserMapper;
import com.wenjian.mywj.entity.User;
import com.wenjian.mywj.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements UserService {
    @Autowired//讲Dao注入Service层
    private UserMapper userMapper;

    @Override
    public List<User> getUserInfo() {
        return userMapper.getUserInfo();
    }
}

（5）resources/mapper: UserMapper.xml.java

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.wenjian.mywj.dao.UserMapper">

    <select id="getUserInfo"  resultType="com.wenjian.mywj.entity.User">
        SELECT * FROM user
    </select>
</mapper>

20 使用Test测试
(1)在pom.xml中添加 单元测试配置

<?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 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.2</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.wenjian</groupId>
    <artifactId>mywj</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>mywj</name>
    <description>Demo project for Spring Boot</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <!--jdbc-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!--thymeleaf模板引擎-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--web依赖-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--mybatis配置-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.4</version>
        </dependency>
        <!--mysql配置-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!--lombok配置-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <!--单元测试配置-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <excludes>
                        <exclude>
                            <groupId>org.projectlombok</groupId>
                            <artifactId>lombok</artifactId>
                        </exclude>
                    </excludes>
                </configuration>
            </plugin>
        </plugins>
    </build>

</project>

(2)给正式的启动MywjApplication中添加MapperScan扫描

package com.wenjian.mywj;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("com.wenjian.mywj.dao")//启动时扫描mapper接口，否则会报错找不到mapper文件
public class MywjApplication {

    public static void main(String[] args) {
        SpringApplication.run(MywjApplication.class, args);
    }

}

(3)在test/java/com.wenjian.myw中测试

package com.wenjian.mywj;

import com.wenjian.mywj.dao.UserMapper;
import com.wenjian.mywj.entity.User;
import com.wenjian.mywj.service.UserService;
import org.junit.jupiter.api.Test;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;

import java.util.List;


@SpringBootTest
class MywjApplicationTests {

    @Autowired
    UserService userService;

    @Test
    public void contextLoads() {
        List<User> userInfo = userService.getUserInfo();
        //第一种遍历
        for (User u: userInfo) {
            System.out.println(u);
        }
        //第二种遍历
        userInfo.forEach(u-> System.out.println(u)); 
    } 
}

运行结果：

--------------------------分割线-------------------------------------------------
做交互
(1) demoController添加getInfo方法

package com.wenjian.mywj.controller;

import com.wenjian.mywj.dao.UserMapper;
import com.wenjian.mywj.entity.User;
import com.wenjian.mywj.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;

import java.util.List;

@Controller
public class demoController {
    @Autowired
    private UserService userService;
    @RequestMapping("/demo")
    public String demo(){
        return "demo";
    }

    @ResponseBody
    @RequestMapping(value = "/getInfo",method = RequestMethod.GET)
    public List<User> getInfo(){
        List<User> userInfo = userService.getUserInfo();

        return userInfo;
    }


}

(2) index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script src="https://apps.bdimg.com/libs/jquery/2.1.4/jquery.min.js"></script>
</head>
<body>
    <div id="ces" style="padding: 5px"> 
    </div>
    
    <script >
        $.ajax({url:"/getInfo",success:function(result){ 
                for (var item in result) {
                    console.log(item)
                    $("#ces").append('
id:'+result[item].id+'
');
                    $("#ces").append('
姓名:'+result[item].name+'
');
                    $("#ces").append('
地址:'+result[item].address+'
');
                    $("#ces").append('
生日:'+result[item].birth+'
');
                }
        }});

    </script>
</body>
</html>

效果如下

---

springboot集成thymeleaf不重启刷新html页面

由于每次改动html不自动刷新
点击链接可以增加热部署解决每次小改或者大改html需要重启项目的麻烦
https://blog.csdn.net/ws_dj_love/article/details/95445590
或者
https://www.cnblogs.com/erlongxizhu-03/p/12193646.html

---

mybatisplus代码生成器

pom.xml引入

 
        
            com.baomidou
            mybatis-plus-boot-starter
            3.2.0
        
        
        
            org.springframework.boot
            spring-boot-starter-freemarker
        
        
        
            com.baomidou
            mybatis-plus-generator
            3.2.0
        

完整的

    4.0.0
    com.hailan
    hailan
    0.0.1-SNAPSHOT
    hailan
    Demo project for Spring Boot

    
        1.8
        UTF-8
        UTF-8
        2.3.7.RELEASE
    

    
        
            org.springframework.boot
            spring-boot-starter-jdbc
        
        
            org.springframework.boot
            spring-boot-starter-thymeleaf
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.1.4
        

        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.2.0
        
        
        
            org.springframework.boot
            spring-boot-starter-freemarker
        
        
        
            com.baomidou
            mybatis-plus-generator
            3.2.0
        

        
            org.springframework.boot
            spring-boot-devtools
            runtime
            true
        
        
            mysql
            mysql-connector-java
            runtime
        
        
            org.projectlombok
            lombok
            true
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
            
                
                    org.junit.vintage
                    junit-vintage-engine
                
            
        
    

    
        
            
                org.springframework.boot
                spring-boot-dependencies
                ${spring-boot.version}
                pom
                import
            
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.8.1
                
                    1.8
                    1.8
                    UTF-8
                
            
            
                org.springframework.boot
                spring-boot-maven-plugin
                2.3.7.RELEASE
                
                    com.hailan.hailan.HailanApplication
                
                
                    
                        repackage
                        
                            repackage
                        
                    
                
            
        
    

新建CodeGenerator类
修改成自己的数据库和对应的包就可以直接运行了生成了

package com.ceshi;

import com.baomidou.mybatisplus.core.exceptions.MybatisPlusException;
import com.baomidou.mybatisplus.core.toolkit.StringPool;
import com.baomidou.mybatisplus.core.toolkit.StringUtils;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.InjectionConfig;
import com.baomidou.mybatisplus.generator.config.*;
import com.baomidou.mybatisplus.generator.config.po.TableInfo;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import com.baomidou.mybatisplus.generator.engine.FreemarkerTemplateEngine;

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 {

    //URL地址
    private final static String URL="jdbc:mysql://localhost:3306/tongbu?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=UTC";
    //数据库账号
    private final static String USERNAME= "root";
    //数据库密码
    private final static String PASSWORD= "123456";
    //安装位置 包的路径
    private final static String PARENT="com.tongbu";
    //数据库驱动
    private final static String DRIVERNAME ="com.mysql.cj.jdbc.Driver";

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

     * 读取控制台内容
     * 
     */
    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.isNotEmpty(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();

        // 全局配置
        GlobalConfig gc = new GlobalConfig();
        String projectPath = System.getProperty("user.dir");
        gc.setOutputDir(projectPath + "/src/main/java");
        // gc.setOutputDir("D:\\test");
        gc.setAuthor("深林中的书海");
        gc.setOpen(false);
        // gc.setSwagger2(true); 实体属性 Swagger2 注解
        gc.setServiceName("%sService");
        mpg.setGlobalConfig(gc);

        // 数据源配置 数据库名 账号密码
        DataSourceConfig dsc = new DataSourceConfig();
        dsc.setUrl(URL);
        // dsc.setSchemaName("public");
        dsc.setDriverName(DRIVERNAME);
        dsc.setUsername(USERNAME);
        dsc.setPassword(PASSWORD);
        mpg.setDataSource(dsc);

        // 包配置
        PackageConfig pc = new PackageConfig();
        pc.setModuleName(null);
        pc.setParent(PARENT);
        mpg.setPackageInfo(pc);

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

        // 自定义输出配置
        List 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.setFileOutConfigList(focList);
        mpg.setCfg(cfg);

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

        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);
        strategy.setEntityLombokModel(true);
        strategy.setRestControllerStyle(true);
        strategy.setInclude(scanner("表名，多个英文逗号分割").split(","));
        strategy.setControllerMappingHyphenStyle(true);
        strategy.setTablePrefix("m_");
        mpg.setStrategy(strategy);
        mpg.setTemplateEngine(new FreemarkerTemplateEngine());
        mpg.execute();
    }
}

示例

---

完整版的pom.xml和application.yml(引入了热部署和mybatis-plus代码生成器)

借鉴application.yml：

# DataSource Config
spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver

    url: jdbc:mysql://127.0.0.1:3306/hailan?useUnicode=true&useSSL=false&characterEncoding=utf8&serverTimezone=Asia/Shanghai&allowPublicKeyRetrieval=true
    username: root
    password: 123456
    resources:
      static-locations: classpath:/static/
      #模版配置
  thymeleaf:
    cache: false
    prefix: classpath:/templates/
    suffix: .html
    #模版模式
    mode: HTML5
    encoding: UTF-8
  servlet:
    content-type: text/html
    multipart:
      max-file-size: 1024MB
      max-request-size: 1024MB

  #    热部署
  devtools:
    restart:
      #      是否启用重启
      enabled: true
      #      设置重启的目录
      additional-paths: src/main/java
      #classpath目录下的WEB-INF文件夹内容修改不重启
      spring.devtools.restart.exclude: WEB-INF/**
#      指定程序的配置文件
#  profiles: dev

mybatis-plus:
  mapper-locations: classpath*:/mapper/**Mapper.xml

server:
  port: 8080

shiro-reids:
  enabled: true
  redis-manager:
    host: 127.0.0.1:6379

借鉴pom.xml(我这里引入了代码生成器)

    4.0.0
    com.hailan
    hailan
    0.0.1-SNAPSHOT
    hailan
    Demo project for Spring Boot

    
        1.8
        UTF-8
        UTF-8
        2.3.7.RELEASE
    

    
        
            org.springframework.boot
            spring-boot-starter-jdbc
        
        
            org.springframework.boot
            spring-boot-starter-thymeleaf
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            2.1.4
        

        
        
            com.baomidou
            mybatis-plus-boot-starter
            3.2.0
        
        
        
            org.springframework.boot
            spring-boot-starter-freemarker
        
        
        
            com.baomidou
            mybatis-plus-generator
            3.2.0
        

        
            org.springframework.boot
            spring-boot-devtools
            runtime
            true
        
        
            mysql
            mysql-connector-java
            runtime
        
        
            org.projectlombok
            lombok
            true
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
            
                
                    org.junit.vintage
                    junit-vintage-engine
                
            
        
    

    
        
            
                org.springframework.boot
                spring-boot-dependencies
                ${spring-boot.version}
                pom
                import
            
        
    

    
        
            
                org.apache.maven.plugins
                maven-compiler-plugin
                3.8.1
                
                    1.8
                    1.8
                    UTF-8
                
            
            
                org.springframework.boot
                spring-boot-maven-plugin
                2.3.7.RELEASE
                
                    com.hailan.hailan.HailanApplication
                
                
                    
                        repackage
                        
                            repackage