连不上mySQL数据库
package com.icar.model;
import java.sql.Connection;
import java.sql.DriverManager;
public class ConnDB {
private Connection conn = null;
public Connection getConnection() {
try {
Class.forName("com.mysql.jdbc.Driver");
String url="jdbc:mysql://localhost:3306/mysql";
String username = "root";
String password = "niit";
conn = DriverManager.getConnection(url, username, password);
} catch (Exception e) {
e.printStackTrace();
}
return conn;
}
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设了断点,从Class.forName那就有问题, 报的异常是,Class<?> java.lang.Class.forName(String className) throws ClassNotFoundException
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自己写了一个连数据库的测试例子,可以运行成功,以下是成功的例子。
package com.icar.model;//运行前请确认架包已导入
import java.sql.*;;
public class mySqlTest {
public static void main(String[] args) {
try{
Class.forName("com.mysql.jdbc.Driver");
String url="jdbc:mysql://localhost:3306/mysql";
Connection conn=DriverManager.getConnection(url,"root","niit");
Statement stat=conn.createStatement();
System.out.println("成功连接数据库!");
stat.close();
conn.close();
}catch(Exception e){
e.printStackTrace();
}
}
}