java - com.mysql.jdbc 包不存在

Question

我在导入com.mysql.jdbc.Connection时遇到问题，它说包com.mysql.jdbc不存在并且iam已经将mysql-connector-java-5.1.36放在netbeans

    package pkgnew;
import com.mysql.jdbc.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
/**
 *
 * @author xxxx1
 */
public class DBConn {
    private Connection DBConn;
    public Connection connect() {
        try {
            Class.forName("com.mysql.jdbc.Driver");
            System.out.println("Connection Success");
        }
        catch(ClassNotFoundException cnfe){
            System.out.println("Connection Fail" + cnfe);
        }
        String url = "jdbc:mysql://localhost:3306/cars";
            try {
            DBConn = (Connection) DriverManager.getConnection(url, "root","123456");
            System.out.println("Database Connected");
            }
            catch (SQLException se){
                    System.out.println("No Database"+se);
                    }
            return DBConn;
        }
    }

Answer 1

这是 Jar 丢失的问题。 Netbean 编辑器无法从 MySQL_XXX_whatever_Name.jar 进行精分割类。

请首先将所需的正确库添加到您的 java 项目中。

In Netbean, Right click on Library -> search Mysql...jar file(if exist from list) otherwise, manually download and import.

你的问题将会得到解决。