1. 单元测试

      1. <!-- https://mvnrepository.com/artifact/junit/junit -->
      2. <dependency>
      3.  <groupId>junit</groupId>
      4.  <artifactId>junit</artifactId>
      5.  <version>4.13.2</version>
      6.  <scope>test</scope>
      7. </dependency>

    2. 数据库连接池 ```sql

      com.alibaba druid 1.2.7 
    2. 3. Mysql驱动包
    3. ```sql
    4. <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
    5. <dependency>
    6.     <groupId>mysql</groupId>
    7.     <artifactId>mysql-connector-java</artifactId>
    8.     <version>8.0.26</version>
    9. </dependency>

    1. servlet

      1. <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api -->
      2. <dependency>
      3.  <groupId>javax.servlet</groupId>
      4.  <artifactId>javax.servlet-api</artifactId>
      5.  <version>4.0.1</version>
      6.  <scope>provided</scope>
      7. </dependency>

    2. jsp里面写jstl标签库

      1. <!-- https://mvnrepository.com/artifact/javax.servlet/jstl -->
      2. <dependency>
      3.  <groupId>javax.servlet</groupId>
      4.  <artifactId>jstl</artifactId>
      5.  <version>1.2</version>
      6. </dependency>

    3. map转bean

      1. <dependency>
      2. <groupId>commons-beanutils</groupId>
      3. <artifactId>commons-beanutils</artifactId>
      4. <version>1.9.4</version>
      5. </dependency>