jdbc连接mysql实例代码

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
public class DBConfigure {
private Statement stmt = null;
private ResultSet rs = null;
private Connection conn = null;
String sql;
String strurl;
/**
* 缺省的构造函数
*/
public DBConfigure() {
}
/**
* 连接数据库
*/
public void OpenConn() {
try {
// 驱动的名称
Class.forName("com.mysql.jdbc.Driver");
String user = "root";
String passwd = "123456";
String strDBname = "jobsearch";
conn = DriverManager
.getConnection("jdbc:mysql://localhost/"+strDBname+"?user=" + user
+ "&password=" + passwd + "");// 访问的数据库的帐号密码
} catch (Exception e) {
System.out.println("OpenConnection:" + e.getMessage());
}
}

public ResultSet executeQuery(String sql) {
stmt = null;
rs = null;
try {
stmt = conn.createStatement();
rs = stmt.executeQuery(sql);
} catch (SQLException e) {
System.err.println("executeQuery:" + e.getMessage());
}
return rs;
}
public void executeUpdate(String sql) {
stmt = null;
try {
stmt = conn.createStatement();
stmt.executeUpdate(sql);
} catch (SQLException e) {
System.out.println("executeUpdate:" + e.getMessage());
}
}
public void closeStmt() {
try {
stmt.close();
} catch (SQLException e) {
System.err.println("closeStmt:" + e.getMessage());
}
}
public void closeConn() {
try {
conn.close();
} catch (SQLException ex) {
System.err.println("aq.closeConn:" + ex.getMessage());
}
}
}

import java.sql.*;
public class Test {
public static void main(String args[]) {
try {
DBConfigure db=new DBConfigure();
ResultSet rs=null;
db.OpenConn();

String sql="select * from page";
rs=db.executeQuery(sql);
while(rs.next()){ System.out.println(rs.getString("content"));
}
db.closeStmt();
} catch (Exception e) {
e.printStackTrace();
}
}
}