com.pureinfo.srm.auth.action.DrawDigitalImgAction.java Source code

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Here is the source code for com.pureinfo.srm.auth.action.DrawDigitalImgAction.java

Source

/**
 * PureInfo Command
 * @(#)DrawDigitalImgAction.java   1.0 Aug 23, 2006
 * 
 * Copyright(c) 2004-2005, PureInfo Information Technology Corp. Ltd. 
 * All rights reserved, see the license file.
 * 
 * www.pureinfo.com.cn
 */

package com.pureinfo.srm.auth.action;

import java.io.IOException;
import java.util.Random;

import javax.servlet.ServletOutputStream;

import org.apache.commons.lang.StringUtils;
import org.apache.struts.action.ActionForward;

import com.pureinfo.ark.interaction.ActionBase;
import com.pureinfo.force.exception.PureException;
import com.pureinfo.srm.common.ImageHelper;

public class DrawDigitalImgAction extends ActionBase {

    protected boolean isLoginNeeded() {
        return false;
    }

    public ActionForward executeAction() throws PureException {
        response.setContentType("image/png");
        Random rand = new Random();
        int anInt = rand.nextInt();
        if (anInt < 0)
            anInt = -anInt;
        anInt = anInt % 10000;
        String sValidateNum = String.valueOf(anInt);
        sValidateNum = StringUtils.leftPad(sValidateNum, 4, '0');

        try {
            ServletOutputStream op = response.getOutputStream();
            ImageHelper.drawImage(sValidateNum, op);
        } catch (IOException e) {
            throw new PureException(0, "", e);
        }
        request.getSession().setAttribute("validateNum", sValidateNum);
        return null;
    }
}