创建二维条码到JSP页面

1、创建处理的Action

import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;

import javax.imageio.ImageIO;
import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import com.lowagie.text.pdf.BarcodePDF417;

@Controller
public class CreateImageAction {

	@RequestMapping("/bill/createImage.do")
	public void createImage(String barcode, HttpServletResponse response) throws Exception {
		int width=110;
		int height =60;
		//**********二维Barcode********//
		BarcodePDF417 barcodePDF417 = new BarcodePDF417();
		barcodePDF417.setErrorLevel(7);
		barcodePDF417.setText(barcode);
		Image image = barcodePDF417.createAwtImage(new Color(0, 0, 0),new Color(255, 255, 255));
		//***********End**************//
		//设置图像大小
		image = image.getScaledInstance(width,height, Image.SCALE_DEFAULT);
		//内存中创建图像
		BufferedImage bufferImage = new BufferedImage(width,height,BufferedImage.TYPE_INT_RGB);
		 //获取图形上下文
		Graphics2D graph = (Graphics2D) bufferImage.getGraphics();
		//绘制图像到目标位置
		graph.drawImage(image, 0, 0, image.getWidth(null), image.getHeight(null), 0,0,width,height,null);
		//销毁Graphics
		graph.dispose();
		// 输出图象到页面
		ImageIO.write(bufferImage, "JPEG", response.getOutputStream());
	}

}

 2、jsp调用

<img src="bill/createImage.do?barcode=123456" />