关于使用JAVA连接MYSQL出现中文乱码

在MYECLIPSE中使用Java连接MySQL数据

1. 导入外部包
   Build Path ——>Configure Build Path…——>Add External JARs..

   public static void main(){
   String url = “jdbc:mysql://127.0.0.1:3306/bankmananger”;
   String username = “root”;
   String password = “mysql”;
   //2.加载驱动
   Class.forName(“com.mysql.jdbc.Driver”);
   //3.建立连接
   DriverManager.getConnect(url,username,password);
   //测试插入数据
   PreparedStatement preparedStatement = connection.prepareStatement(“insert into user(userid,username,money)values(?,?,?);”);
   preparedStatement.setString(1, “1110”);
   preparedStatement.setString(2, new String(“陈九”));
   preparedStatement.setString(3, “656666”);
   int result = preparedStatement.executeUpdate();
   System.out.println(result);
   preparedStatement.close();
   connection.close();
   }
   

在数据库中出现中文乱码，在url后面追加?useUnicode=true&characterEncoding=utf-8使中文能够输入到数据库
String url = “jdbc:mysql://127.0.0.1:3306/bankmananger”;
改为：String url = “jdbc:mysql://127.0.0.1:3306/bankmananger?useUnicode=true&characterEncoding=utf-8”;
再次运行测试