java - 无法连接到 jdbc 驱动程序 mysql

Question

当我尝试使用 java 类连接到 mysql 数据库时，出现此错误。 请帮助我设置了 CLASSPATH: C:\mysql-connector-java-5.0.8\mysql-connector-java-5.0.8.jar

    java.lang.ClassNotFoundException: com.mysql.jdbc.Driver
             at java.net.URLClassLoader$1.run(Unknown Source)
             at java.net.URLClassLoader$1.run(Unknown Source)
             at java.security.AccessController.doPrivileged(Native Method)
             at java.net.URLClassLoader.findClass(Unknown Source)
             at java.lang.ClassLoader.loadClass(Unknown Source)
             at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
             at java.lang.ClassLoader.loadClass(Unknown Source)
             at java.lang.Class.forName0(Native Method)
             at java.lang.Class.forName(Unknown Source)
    at connect.main(connect.java:17)
Cannot connect to database server
Exception in thread "main" java.lang.NullPointerException
    at connect.main(connect.java:29)

Answer 1

将驱动添加到类路径中:

java -cp .;C:\mysql-connector-java-5.0.8\mysql-connector-java-5.0.8.jar connect