java常用、通用代码或配置

pom.xml

　　支持springBoot

　　　　parent

<parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.1</version>
</parent>

　　　　starter

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter</artifactId>
</dependency>

 　　支持springWeb

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
</dependency>

支持mybatis【TODO】

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <!--不知道为什么，去了版本就不支持MapperScan注解-->
    <version>1.3.0</version>
</dependency>

<!-- mysql 数据库驱动. -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
</dependency>

支持aop

<!-- SpringBoot 拦截器 -->
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-aop</artifactId>
</dependency>

---

properties或者yml常用配置

　　服务端口

server:
  port: 2525

　　视图前后缀配置

spring:
  mvc:
    view:
      prefix: /WEB-INF/views
      suffix: .jsp

　　数据库yml【todo】

spring:
  datasource:
    # 使用druid数据源
    type: com.alibaba.druid.pool.DruidDataSource
    url: jdbc:mysql://localhost:3306/test21.2.27?serverTimezone=UTC
    username: root
    password: 123456
    driver-class-name: com.mysql.jdbc.Driver
    filters: stat
    maxActive: 20
    initialSize: 1
    maxWait: 60000
    minIdle: 1
    timeBetweenEvictionRunsMillis: 60000
    minEvictableIdleTimeMillis: 300000
    validationQuery: select 1 FROM DUAL
    testWhileIdle: true
    testOnBorrow: false
    testOnReturn: false
    poolPreparedStatements: true
    maxOpenPreparedStatements: 20