サーブレットでdb2へ接続
package qqq;package qqq;
import java.io.IOException;import java.io.PrintWriter;import java.sql.Connection;import java.sql.ResultSet;import java.sql.Statement;
import javax.naming.Context;import javax.naming.InitialContext;import javax.servlet.ServletException;import javax.servlet.http.HttpServlet;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import javax.sql.DataSource;
/** * Servlet implementation class Conn */
public class Conn extends HttpServlet { private static final long serialVersionUID = 1L; /** * @see HttpServlet#HttpServlet() */ public Conn() { super(); // TODO Auto-generated constructor stub }
/** * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response) */ protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub response.getWriter().append("Served at: ").append(request.getContextPath()); // ContentTypeを設定 response.setContentType("text/html; charset=UTF-8"); // 出力用PrintWriterを取得 PrintWriter out = response.getWriter(); // 出力 out.println("<html>"); out.println("<head>"); out.println("<title>DB2 Connect Sample</title>"); out.println("</head>"); out.println("<body>"); out.println("<table border=\"1\">"); out.println("<tr><td>ID</td><td>DOC</td></tr>"); try { Context ctx = new InitialContext(); //コネクションプールからデータソースを取得 DataSource ds = (DataSource)ctx.lookup("jjj/jdbc"); Connection con = ds.getConnection(); Statement stmt = con.createStatement(); //rssテーブルを検索し、結果を表示 ResultSet rs = stmt.executeQuery("select id,name from T1"); while(rs.next()) { out.println("<tr><td>"); out.println(rs.getString("id")); out.println("</td><td>"); out.println(rs.getString("name")); out.println("</td></tr>"); } rs.close(); stmt.close(); con.close(); } catch (Exception e) { e.printStackTrace(); } out.println("</table>"); out.println("</body>"); out.println("</html>");
}
/** * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response) */ protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { // TODO Auto-generated method stub doGet(request, response); }
}
