mysqlpool.java
--------------------------------------------------------------------------------------------------
import java.io.*;
import java.sql.*;
import weblogic.db.jdbc.*;
import java.util.Properties;
import javax.servlet.*;
import javax.servlet.http.*;
public class mysqlpool extends HttpServlet {
public void service(HttpServletRequest req, HttpServletResponse res)
throws IOException
{
res.setContentType("text/html");
PrintWriter out = res.getWriter();
out.println("<html><head><title>Hello World!</title></head>");
out.println("<body><h1>TEST Weblogic Pool!</h1><pre>");
Connection Conn = null;
try {
//=================================================================================
Properties props =new Properties();
props.setProperty("user", "system");
props.setProperty("password", "zjxyzken");
Driver myDriver =
(Driver) Class.forName("weblogic.jdbc.pool.Driver").newInstance();
Conn = myDriver.connect("jdbc:weblogic:pool:mysqlPool1",props);
//=================================================================================
Statement Stmt = Conn.createStatement();
ResultSet RS = Stmt.executeQuery("SELECT * from users");
while (RS.next()) {
out.println(RS.getString("userid")+"\t"
+RS.getString("passwd")
+"\t"+RS.getString("name"));
}
RS.close();
Stmt.close();
Conn.close();
}catch (Exception E) {
System.err.println("Unable to load driver.");
E.printStackTrace();
}
out.println("</pre></body></html>");
}
}
经过阅读源代码，我们可以发现，作为程序员某定程度上根本不需要理会服务器装的是什么SQL数据库，
只需连接到weblogic创建提供的POOL就可以了，这样一来除了可以提高效率外还令到代码的可重用性大大提高。
