我使用Eclipse和MySQL db连接Java
码
import java.sql.*;
import java.io.*;
public class DbDemo {
public static void main(String args[]) throws ClassNotFoundException,SQLException {
String s;
String uname="root@localhost";
String url="jdbc:mysql://localhost:3306/student";
String password="Hsun123";
int i;
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection con=DriverManager.getConnection(url,uname,password);
Statement st=con.createStatement();
ResultSet rs=st.executeQuery("select * from student_detail");
if(rs.next()) {
i=rs.getInt(1);
s=rs.getString(2);
System.out.println(i+"/t"+s);
}
rs.close();
st.close();
con.close();
} catch(Exception e) {
e.printStackTrace();
}
}
}
错误
java.sql.SQLException: Access denied for user 'root@localhost'@'localhost' (using password: YES)
at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3597)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3529)
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:935)
at com.mysql.jdbc.MysqlIO.secureAuth411(MysqlIO.java:4101)
at com.mysql.jdbc.MysqlIO.doHandshake(MysqlIO.java:1300)
at com.mysql.jdbc.ConnectionImpl.coreConnect(ConnectionImpl.java:2337)
at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2370)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2154)
at com.mysql.jdbc.ConnectionImpl.
我该怎么做才能解决我的问题?
最佳答案
而不是使用:
String uname="root@localhost";
使用 :
String url="jdbc:mysql://localhost:3306/student";
String userName="root"
String password="Hsun123"
...
try{
Class.forName("com.mysql.jdbc.Driver").newInstance();
Connection con=DriverManager.getConnection(url,username,password);
...
这应该工作(假设你设置了有效的密码)
(编辑:李大同)
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