jdbcÁ¬½ÓmysqlÎÊÌ⣬°ÝÍдó¼ÒÁË£¬ÅªÁËÒ»ÍíÉÏÁË
»·¾³ÎªEclipse£¬jdbcÇý¶¯Ò²¼ÓÔØÁË
ÎÒдÁ˸ö²âÊÔ£¬´úÂëÈçÏÂ
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.*;
import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;
import java.sql.SQLException;
public class Test {
public void main(String []args)throws Exception
{
Class.forName("com.mysql.jdbc.Driver");
Connection con= DriverManager.getConnection(("jdbc:mysql://127.0.0.1:3306/test", "root", "123");
Statement sm=con.createStatement();
ResultSet rs=sm.executeQuery("SELECT * from wangpan");
while(rs.next())
{
System.out.println("UserId:"+rs.getString(0));
System.out.println("UserName:"+rs.getString(1));
System.out.println();
}
}
}
Connection con= DriverManager.getConnection(("jdbc:mysql://127.0.0.1:3306/test", "root", "123");
Statement sm=con.createStatement();
ÕâÁ½¾ä×ÜÊDZ¨´í¡£¡£¡£¡£Ëµtype mismatch: cannot convert from Connection to Connection
È¥µôÕâ¸öimport com.mysql.jdbc.Connection;
Ò»¸öÊÇimport com.mysql.jdbc.Connection;
Ò»¸öÊÇjava.sql.Connection;
¹þ¹þ£¬Â¥ÉÏÕý½â¡£¡£¡£
ÔÀ´ÒѾ¸ø³öÕýÈ·´ð°¸ÁË¡£
Χ¹ÛµÄ ¡£¡£¡£
·¹ýµÄ
¿ªÊ¼¿´£¬»¹Ïë½â½â£¬¿´×Å¿´×Å
Ïà¹ØÎÊ´ð£º
Óиöwinform³ÌÐò,ʹÓÃc#+mysql,ÐèÒªÔÚÒ»¸ö´°ÌåÉèÖÃmysql×Ô¶¯É¾³ý¹¦ÄÜ,°üÀ¨×Ô¶¯É¾³ý¶àÉÙÌì֮ǰµÄÊý¾ÝÒÔ¼°ÊÇ·ñ¿ªÆô×Ô¶¯É¾³ý¹¦ÄÜ,ÎÒ³ÌÐòÍ˳öºó,»¹Ôõô¿ØÖÆMysql×Ô¼ºÉ¾³ý°¡?ÊDz»ÊÇÒªÓÃmysqlµÄeventÀ´ÊµÏÖ?c#¿ÉÒÔµ÷ÓÃmysq ......
ÇëÎÊÏÂÄܲ»ÄÜÔÙwindows϶¨ÆÚÇå¿ÕmysqlÒ»¸ö±íÖеÄÈ«²¿Êý¾Ý£¬ÓÃPHPʵÏÖ£¡
лл¸÷λÁË
¾Í±ÈÈçÒ»¸öÐÇÆÚÇå¿ÕÒ»´Î
±ÈÈçÿ¸öÐÇÆÚÁùÁãµãÇå¿ÕÒ»´Î£¡
ллÁË
¼Æ»®ÈÎÎñ...php....sql...truncate....OK
Äã¾ÍÕâ½ÓÔÚҳà ......
ÎÒÓõÄÊÇÁ¬½Ó³Ø×öµÄ£¬ÅäÁ¬½Ó³ØµÄ·½·¨Ó¦¸ÃûÓÐ´í£¬ÎªÊ²¾ÍÊdzöÏÖÕâÖÖÎÊÌâ
javax.servlet.ServletException: javax.naming.NameNotFoundException: No object bound to name java:comp/env/test
ÇëÎÊ´óÏÀÃÇÕâÊÇÔ ......
String SQL="insert into ѧÉúÐÅÏ¢±í values(StudentNumber,StudentName,StudentAge)";ÆäÖÐStudentNumber,StudentName,StudentAge¶¼ÊDZäÁ¿¡£ÕâÑùд²»¶Ô¡¡µ½µ×¸Ãզд°¡
Íò·Ö¸Ðл£¡
String SQL=&q ......
3̨µçÄÔ£¬ÆäÖÐһ̨×÷ΪMYSQL·þÎñÆ÷£¬ÁíÍâ2̨ΪTOMCAT·þÎñÆ÷¡£
MYSQL·þÎñÆ÷ÀïÓÐÒ»Ìõ¼Ç¼£¬ IDΪ10.
ÏÖÔÚ2̨TOMCATͬʱ£¨100%£©·¢ÆðÐÞ¸ÄMYSQLÀïIDΪ10µÄÄÇÌõ¼Ç¼£¬±ÈÈçÐ޸ĴËID¼Ç¼ÀïijһÏîµÄÄÚÈÝ¡£ ±ÈÈçTOMCAT 1Ò ......