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Go Back  dBforums > Data Access, Manipulation & Batch Languages > JAVA > Connecting JSP with data from mySQL

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Old 07-13-06, 22:37
santalea santalea is offline
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Join Date: Jul 2006
Posts: 1
Exclamation Connecting JSP with data from mySQL

i need to connect the jsp file with the database. i did connect it but the thing is that now the actionscript that i created won't read the value from the database. when i run the movie, (because i trace the value) the output will state as undefined instead of the values from the database.
below is my jsp code:
Code:
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ page import="java.sql.*" %>
<%@ include file="mysqlConfig.jsp" %>

<%
    Connection connection = null;
    String str="";

    try {
		Class.forName("com.mysql.jdbc.Driver");
		connection = DriverManager.getConnection(s1_db, db_user, db_pw);
		Statement statement = connection.createStatement();

        ResultSet rs = statement.executeQuery("SELECT * FROM mapping");
        //String[][] data = new String[11][10];
        
        int x = 0;
	        while (rs.next()) {
	            //noinspection UnusedAssignment
	            str = str + "&Longitude" + x + "=" + rs.getString("Longitude") + "&Latitude" + x + "=" + rs.getString("Latitude") +
	                    	"&Angle" + x + "=" + rs.getString("Angle") + "&" + "<br>";
	                    	
	            x++;
	        }
	        
	        out.println(str);
		
			} catch(ClassNotFoundException cnfe){
				System.out.println("Database driver not found:" + cnfe.getMessage());
			} catch(SQLException sqlexception){
				System.out.println("Error opening the db connection: " + sqlexception.getMessage());
			} finally {
		        try {
		            connection.close();
		        } catch (SQLException e) {
		            e.printStackTrace();  //To change body of catch statement use File | Settings | File Templates.
		        }
		    }
%>
and the one below is my actionscript code:
HTML Code:
stop();
_global.serverURL = "http://172.16.218.47:8080/uas_admin/";

var intervalTime:Number;		//setInterval
var mUnit:Array = new Array();
var targetIndex:Number = 0;

this.initMap();

//this.createEmptyMovieClip("line_mc", 1);		//creating the line
//line_mc.lineStyle(2, 0xFF00FF, 30);	
//this.attachMovie("arrowmc", "arrowmc", this.getNextHighestDepth());		//inserting the mc

var move_int = setInterval(moveChaser,500);		//setting time delay between movements

function moveChaser(){
	trace(updated);
	if(updated == true){
		for (var n = 0; n < mUnit.length; n++) {
			trace("Value "+ n + ": ("  + mUnit[n].mLong + ", " + mUnit[n].mLati + ")" );
		}
	}
}



// function to call JSP file to access database for latest MGR and heading angle
function initMap():Void {
	var send_lv:LoadVars = new LoadVars();
	var rec_lv:LoadVars = new LoadVars();
 	var updated:Boolean = false;
	// Battlescape to receive data from test.mapping using main.jsp
	send_lv.sendAndLoad(_global.serverURL + "mine.jsp", rec_lv, "POST");
	rec_lv.onLoad = function(success:Boolean) {
		if (success) {
		var i:Number = 0;
			while (rec_lv["Longitude"+i] != null){
				mUnit[i] = new Mappie(rec_lv["Longitude"+i], rec_lv["Latitude"+i], rec_lv["Angle"+i]);
				i++;
			}
			updated = true;

		}
	}
}
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