(Graphical User Interface) 即图形用户界面，Java 主要分为 AWT 和 Swing 两大 系列 GUI API。其中，AWT (Abstract Window Toolkit) 即为抽象窗口工具集，是 Java 包 含的最基础的图形界面库，AWT 相关软件包主要包括： java.awt 包 提供基本 GUI 组件、视觉控制和绘图工具 API。 java.awt Servlet 的声明中可以配置 Servlet 初始参数，如数据库的 Driver、URL、账号和 密码等信息。在 Servlet 中可以读取这些信息，避免在 Servlet 代码中定义这些信息，修 改时无需重新编译 Servlet。 1 2 3 driver 4 sun JdbcOdbcDriver 5 6 在 Servlet 中取得以上定义的参数的方法： 1 String driver = config.getInitParameter(”driver”); . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

(Graphical User Interface)，Java 主要分为 AWT 和 Swing 两大系列 GUI API。 O 抽象窗口工具集 AWT (Abstract Window Toolkit) O 相关软件包 java.awt 包 提供基本 GUI 组件、视觉控制和绘图工具 API。 java.awt.event 包 提供 Java GUI 事件处理 API。 大纲 GUI

} } NOTE By default, Spring Boot puts WebDriver beans in a special “scope” to ensure that the driver exits after each test and that a new instance is injected. If you do not want this behavior, you TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has

TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has <driver>org.h2.Driverdriver> jdbc:h2:~/yourdatabase

TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has <driver>org.h2.Driverdriver> jdbc:h2:~/yourdatabase

TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has <driver>org.h2.Driverdriver> jdbc:h2:~/yourdatabase

TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has <driver>org.h2.Driverdriver> jdbc:h2:~/yourdatabase

TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has <driver>org.h2.Driverdriver> jdbc:h2:~/yourdatabase

TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has <driver>org.h2.Driverdriver> jdbc:h2:~/yourdatabase

TIP Spring Boot can deduce the JDBC driver class for most databases from the URL. If you need to specify a specific class, you can use the spring.datasource.driver-class-name property. NOTE For a pooling to verify that a valid Driver class is available, so we check for that before doing anything. In other words, if you set spring.datasource.driver-class-name=com.mysql.jdbc.Driver, then that class has <driver>org.h2.Driverdriver> jdbc:h2:~/yourdatabase