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OAF页面集成条形码

OAF页面集成二维码跟这个类似，生成二维码需要以下jar包，zxing-core.jar, zxing-javase.jar，可自行去maven下载。

代码如下：

import java.io.IOException;
import javax.servlet.*;
import javax.servlet.http.*;

import java.util.HashMap;
import java.util.Map;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class QRCodeServlet extends HttpServlet
{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    private String data         = "NONE";
    private String level        = "M";
    private int    width        = 200;
    
    public QRCodeServlet()
    {
    }

    public void init()
        throws ServletException
    {
    }

    private void getParameter(HttpServletRequest httpservletrequest)
    {
        try
        {
            //httpservletrequest.setCharacterEncoding("iso-8859-1");
            String val = httpservletrequest.getParameter("data");
            val = new String(val.getBytes("iso-8859-1"), "utf-8");
            setParameter("data", val);

            if(httpservletrequest.getParameter("width") != null)
            {
                setParameter("width", httpservletrequest.getParameter("width"));
            }
            if(httpservletrequest.getParameter("level") != null)
            {
                setParameter("level", httpservletrequest.getParameter("level"));
            }
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
    }

    public void setParameter(String name, String value)
    {
        if(value != null)
            if(name.equals("data"))
                data = value;
            else
            if(name.equals("width"))
                width = (new Integer(value)).intValue();
            else
            if(name.equals("level"))
                level = value.toUpperCase();
    }

    public void doGet(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
        throws ServletException, IOException
    {
        getParameter(httpservletrequest);

//        httpservletrequest.setCharacterEncoding("UTF-8");
//        httpservletresponse.setCharacterEncoding("UTF-8");
        httpservletresponse.setContentType("image/png");
        httpservletresponse.setHeader("Pragma", "no-cache");
        httpservletresponse.setHeader("Cache-Control", "no-cache");
        httpservletresponse.setDateHeader("Expires", 0L);
       
        try {
            Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();  
            
            if ("L".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
            }
            else if ("M".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
            }
            else if ("Q".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);
            }
            else if ("H".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
            }
            else {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);
            }

            hints.put(EncodeHintType.CHARACTER_SET, "iso-8859-1");
        
            BitMatrix bitMatrix = new MultiFormatWriter().encode(new String(data
                    .getBytes("GBK"), "iso-8859-1"), BarcodeFormat.QR_CODE, width, width, hints);
            MatrixToImageWriter.writeToStream(bitMatrix, "png", httpservletresponse.getOutputStream());
            httpservletresponse.getOutputStream().flush();
            httpservletresponse.getOutputStream().close();

        } catch (WriterException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    public void doPost(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
        throws ServletException
    {
        try
        {
            doGet(httpservletrequest, httpservletresponse);
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
    }
}

配置servlet
下载
$ORA_CONFIG_HOME/10.1.3/j2ee/oacore/application-deployments/oacore/html/orion-web.xml
添加如下内容:

<!-- QRCode Servlet -->

  <servlet>
   <servlet-name>QRCode</servlet-name>
   <display-name>QRCode</display-name>
   <servlet-class>oracle.apps.fnd.test.QRCodeServlet</servlet-class>
  </servlet>

<!-- QRCodeServlet mapping -->

 <servlet-mapping>
    <servlet-name>QRCode</servlet-name>
    <url-pattern>/QRCode</url-pattern>
 </servlet-mapping>

调用
http://xxx.xxx.com.cn:8000/OA_HTML/QRCode?data=123567890&width=300&level=H
也可以参考前文中调用条形码的方式将其集成至OAF页面。

附：带logo展示二维码

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.IOException;

import javax.imageio.ImageIO;
import javax.servlet.*;
import javax.servlet.http.*;
import javax.swing.ImageIcon;

import java.util.HashMap;
import java.util.Map;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.WriterException;
import com.google.zxing.client.j2se.MatrixToImageWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;

public class QRCodeServlet extends HttpServlet
{

    /**
     * 
     */
    private static final long serialVersionUID = 1L;

    private String data         = "NONE";
    private String level        = "M";
    private int    width        = 200;
    private String charset      = "GB2312";
    
    private String logoflag     = "N";
    private String logopath     = "//u02//prod14//appprod14//apps//apps_st//comn//java//classes//oracle//apps//media//logo.png";
    private int    logowidth    = 40;
    
    private String removeborder = "N";
    
    public QRCodeServlet()
    {
    }

    public void init()
        throws ServletException
    {
    }

    private void getParameter(HttpServletRequest httpservletrequest)
    {
        try
        {
            httpservletrequest.setCharacterEncoding(charset);
            String val = httpservletrequest.getParameter("data");
            //val = new String(val.getBytes("gb2312"), "UTF-8");
            setParameter("data", val);

            if(httpservletrequest.getParameter("width") != null)
            {
                setParameter("width", httpservletrequest.getParameter("width"));
            }
            if(httpservletrequest.getParameter("level") != null)
            {
                setParameter("level", httpservletrequest.getParameter("level"));
            }
            if(httpservletrequest.getParameter("logowidth") != null)
            {
                setParameter("logowidth", httpservletrequest.getParameter("logowidth"));
            }
            if(httpservletrequest.getParameter("logopath") != null)
            {
                setParameter("logopath", httpservletrequest.getParameter("logopath"));
            }
            if(httpservletrequest.getParameter("logoflag") != null)
            {
                setParameter("logoflag", httpservletrequest.getParameter("logoflag"));
            }

        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
    }

    public void setParameter(String name, String value)
    {
        if(value != null)
            if(name.equals("data"))
                data = value;
            else
            if(name.equals("width"))
                width = (new Integer(value)).intValue();
            else
            if(name.equals("level"))
                level = value.toUpperCase();
            else
            if(name.equals("logowidth"))
                logowidth = (new Integer(value)).intValue();
            else
            if(name.equals("logopath"))
                logopath = value;
            else
            if(name.equals("logoflag"))
                logoflag = value.toUpperCase();
            else
            if(name.equals("removeborder"))
                removeborder = value.toUpperCase();
    }
    
    public void doGet(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
        throws ServletException, IOException
    {
        getParameter(httpservletrequest);

        httpservletresponse.setContentType("image/png");
//        javax.servlet.ServletOutputStream servletoutputstream = httpservletresponse.getOutputStream();
        httpservletresponse.setHeader("Pragma", "no-cache");
        httpservletresponse.setHeader("Cache-Control", "no-cache");
        httpservletresponse.setDateHeader("Expires", 0L);
       
        try {
            Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();  
            
            if ("L".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
            }
            else if ("M".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.M);
            }
            else if ("Q".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q);
            }
            else if ("H".equals(level)) {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
            }
            else {
                hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.L);
            }

            hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
            
            BitMatrix bitMatrix = new MultiFormatWriter().encode(data, BarcodeFormat.QR_CODE, width, width, hints);
            if ("N".equals(logoflag)) // don't display logo
            {
                MatrixToImageWriter.writeToStream(bitMatrix, "png", httpservletresponse.getOutputStream());
            }
            else // need display logo
            {
                ImageIcon icon = new ImageIcon(logopath);

                BufferedImage barcodeBI = MatrixToImageWriter.toBufferedImage(bitMatrix); 
                Image scaledImage = barcodeBI.getScaledInstance(256, 256, Image.SCALE_DEFAULT);

                BufferedImage bimage = new BufferedImage(width, width, BufferedImage.TYPE_INT_RGB);
                Graphics2D g = bimage.createGraphics();
                
                g.drawImage(scaledImage, 0, 0, width, width, null);
                g.drawImage(icon.getImage(), width/2-logowidth/2, width/2-logowidth/2, logowidth, logowidth, null);
                g.dispose();
              
                try {
                    ImageIO.write(bimage, "png", httpservletresponse.getOutputStream());
                } catch (IOException e) {
                    e.printStackTrace();
                }
                finally
                {
                    barcodeBI.flush();
                    bimage.flush();
                }
            }
//            MatrixToImageWriter.writeToStream(bitMatrix, "png", httpservletresponse.getOutputStream());
            httpservletresponse.getOutputStream().flush();
            httpservletresponse.getOutputStream().close();

        } catch (WriterException ex) {
            ex.printStackTrace();
        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    public void doPost(HttpServletRequest httpservletrequest, HttpServletResponse httpservletresponse)
        throws ServletException
    {
        try
        {
            doGet(httpservletrequest, httpservletresponse);
        }
        catch(Exception ex)
        {
            ex.printStackTrace();
        }
    }
}