我有这个 Java 程序:MySQLConnectExample.java
import java.sql.*;
import java.util.Properties;
public class MySQLConnectExample {
public static void main(String[] args) {
Connection conn1 = null;
Connection conn2 = null;
Connection conn3 = null;
try {
String url1 = "jdbc:mysql://localhost:3306/aavikme";
String user = "root";
String password = "aa";
conn1 = DriverManager.getConnection(url1, user, password);
if (conn1 != null)
System.out.println("Connected to the database test1");
String url2 = "jdbc:mysql://localhost:3306/aavikme?user=root&password=aa";
conn2 = DriverManager.getConnection(url2);
if (conn2 != null) {
System.out.println("Connected to the database test2");
}
String url3 = "jdbc:mysql://localhost:3306/aavikme";
Properties info = new Properties();
info.put("user", "root");
info.put("password", "aa");
conn3 = DriverManager.getConnection(url3, info);
if (conn3 != null) {
System.out.println("Connected to the database test3");
}
} catch (SQLException ex) {
System.out.println("An error occurred. Maybe user/password is invalid");
ex.printStackTrace();
}
}
}
我是这样编译的:
E:\java mysql code driver>javac MySQLConnectExample.java
E:\java mysql code driver>java -cp mysql-connector-java-3.0.11-stable-bin.jar;.
MySQLConnectExample
我收到此错误:
An error occurred. Maybe user/password is invalid
java.sql.SQLException: No suitable driver found for jdbc:mysql://localhost:3306/
aavikme
at java.sql.DriverManager.getConnection(DriverManager.java:596)
at java.sql.DriverManager.getConnection(DriverManager.java:215)
at MySQLConnectExample.main(MySQLConnectExample.java:20)
我做错了什么?
最佳答案
确保你先运行这个:
Class.forName("com.mysql.jdbc.Driver");
这会强制驱动程序自行注册,以便 Java 知道如何处理这些数据库连接字符串。
有关详细信息,请参阅 MySQL Connector reference .
关于java.sql.SQLException : No suitable driver found for jdbc:mysql://localhost:3306/dbname,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/22384710/