SpringBoot模板一

SpringBoot模板一

SpringBoot员工管理系统

用到的技术：

Version1

• JDBC

• MySQL

• SSM

• thymeleaf

• lombok

• shiro

• WebSocket

• Swagger

  Version2

• Echarts

• 导入相关依赖

   <dependencies>
        <!-- jdbc -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!-- springmvc -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!--Mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.2.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
       <!-- shiro -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.9.0</version>
        </dependency>
        <!--thymeleaf-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
    </dependencies>

数据源可以使用 druid 更强大吧

        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.2.8</version>
        </dependency>

数据源类型
type: com.alibaba.druid.pool.DruidDataSource

application.yaml 配置

spring:
  thymeleaf:
    cache: false
  datasource:
    username: root
    password: 258025
    #?serverTimezone=UTC解决时区的报错
    url: jdbc:mysql://localhost:3306/test1?serverTimezone=UTC&useUnicode=true&characterEncoding=utf-8
    driver-class-name: com.mysql.jdbc.Driver
    type: com.mysql.cj.jdbc.MysqlDataSource
    #Spring Boot 默认是不注入这些属性值的，需要自己绑定
    #druid 数据源专有配置
    initialSize: 5
    minIdle: 5
    maxActive: 20
    maxWait: 60000
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: SELECT 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true

    #配置监控统计拦截的filters，stat:监控统计、log4j：日志记录、wall：防御sql注入
    #如果允许时报错  java.lang.ClassNotFoundException: org.apache.log4j.Priority
    #则导入 log4j 依赖即可，Maven 地址：https://mvnrepository.com/artifact/log4j/log4j
    filters: stat,wall,log4j
    maxPoolPreparedStatementPerConnectionSize: 20
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

mybatis:
  type-aliases-package: com.mao.model
  mapper-locations: classpath:mybatis/*.xml

测试数据库的是否连接成功的时候，可以使用 @Resource导入，而不用@Autowire

@Resource的作用相当于@Autowired，只不过@Autowired按byType自动注入，而@Resource默认按byName自动注入罢了。

整合mybatis

• 需要在mapper包下的，实体映射类上使用@Mapper注解，表示这个类是mybatis的一个mapper类：Dao

  或者是在主程序入口类上添加@MapperScan("com.mao.mapper")

• 在配置文件中 加入

  mybatis:
    #  别名，就是用到mapper.xml中返回值对象
    type-aliases-package: com.mao.pojo
    mapper-locations: classpath:mybatis/*.xml
  

• 别名也能在这里设置，通过mybatis.type.aliases.package

需要注意的一些问题

• @RestController 代表是Controller类，并且会把返回值自动转换为JSON格式
• @ResponseBody 返回值自动转换为JSON格式，不会经过视图解析器
• @CrossOrigin 代表这个方法可以接收跨域的请求

IDEA相关插件和快捷键

• idea有一个free-mybatis的插件，可以通过alt+inser帮我们快速生成一个mapper对应的mapper.xml的mybatis文件，并可以为我们的方法快速创建方法对应的实现配置
• ctrl+l可以快速整理代码
• PageHelper插件 可以协助我们进行分页
  
  通过在Controller中使用 PageHelper.startPage([age])
  
  然后在调用接口的时候需要接收(pageNum,pageSize) 参数

全部依赖：

<?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>2.6.5</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.mao</groupId>
    <artifactId>springboot02</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot02</name>
    <description>springboot02</description>
    <properties>
        <java.version>1.8</java.version>
    </properties>
    <dependencies>
        <!-- jdbc -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!-- springmvc -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <!--数据库驱动-->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!--Mybatis-->
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.2.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <!--thymeleaf-->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <!--lombok-->
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <!-- shiro -->
        <dependency>
            <groupId>org.apache.shiro</groupId>
            <artifactId>shiro-spring</artifactId>
            <version>1.9.0</version>
        </dependency>
        <!-- shiro-thymeleaf整合-->
        <dependency>
            <groupId>com.github.theborakompanioni</groupId>
            <artifactId>thymeleaf-extras-shiro</artifactId>
            <version>2.1.0</version>
        </dependency>
<!--        <dependency>-->
<!--            <groupId>org.slf4j</groupId>-->
<!--            <artifactId>jcl-over-slf4j</artifactId>-->
<!--        </dependency>-->
<!--        <dependency>-->
<!--            <groupId>org.slf4j</groupId>-->
<!--            <artifactId>slf4j-log4j12</artifactId>-->
<!--        </dependency>-->
        <!-- WebSocket依赖 -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>1.2.12</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-websocket</artifactId>
        </dependency>
        <!-- BootStrap依赖 -->
        <!-- https://mvnrepository.com/artifact/org.webjars/bootstrap -->
<!--        <dependency>-->
<!--            <groupId>org.webjars</groupId>-->
<!--            <artifactId>bootstrap</artifactId>-->
<!--            <version>4.3.1</version>-->
<!--        </dependency>-->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.12.0</version>
        </dependency>
        <!-- 集成Swagger -->
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger2</artifactId>
            <version>2.9.2</version>
        </dependency>
        <dependency>
            <groupId>io.springfox</groupId>
            <artifactId>springfox-swagger-ui</artifactId>
            <version>2.9.2</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.6.5</version>
            </plugin>
        </plugins>
    </build>

</project>