ActionCheckinCode.java

package com.x.meeting.assemble.control.jaxrs.meeting;

import java.awt.Graphics2D;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.util.Hashtable;

import javax.imageio.ImageIO;
import javax.ws.rs.core.UriBuilder;

import org.apache.commons.codec.binary.Base64;

import com.google.zxing.BarcodeFormat;
import com.google.zxing.EncodeHintType;
import com.google.zxing.MultiFormatWriter;
import com.google.zxing.common.BitMatrix;
import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
import com.x.base.core.project.annotation.FieldDescribe;
import com.x.base.core.project.config.ApplicationServer;
import com.x.base.core.project.config.Config;
import com.x.base.core.project.http.ActionResult;
import com.x.base.core.project.http.EffectivePerson;
import com.x.base.core.project.logger.Audit;
import com.x.base.core.project.logger.Logger;
import com.x.base.core.project.logger.LoggerFactory;
import com.x.base.core.project.tools.StringTools;
import com.x.organization.core.entity.Bind;

class ActionCheckInCode extends BaseAction {

	private static Logger logger = LoggerFactory.getLogger(ActionCheckInCode.class);

	ActionResult<Wo> execute(EffectivePerson effectivePerson, String meetingId) throws Exception {
		Audit audit = logger.audit(effectivePerson);
		ActionResult<Wo> result = new ActionResult<>();
		Wo wo = new Wo();
		String meta = StringTools.uniqueToken();

		ApplicationServer applicationServer = Config.currentNode().getApplication();
		Boolean sslEnable = applicationServer.getSslEnable();
		String host = applicationServer.getProxyHost();
		int port = applicationServer.getProxyPort();

		String applicationUrl = getApplicationUrl(sslEnable, host, port) + "/x_meeting_assemble_control/jaxrs/meeting/" + meetingId + "/checkin";
		/** 二维码内容 */
		String url = UriBuilder.fromUri(applicationUrl).build().toASCIIString();
		int width = 800; // 二维码图片宽度
		int height = 800; // 二维码图片高度
		String format = "png";// 二维码的图片格式

		Hashtable<EncodeHintType, String> hints = new Hashtable<EncodeHintType, String>();
		// 内容所使用字符集编码
		hints.put(EncodeHintType.MARGIN, "1");
		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.Q.toString());

		BitMatrix bitMatrix = new MultiFormatWriter().encode(url, BarcodeFormat.QR_CODE, width, height, hints);
		BufferedImage image = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
		for (int x = 0; x < width; x++) {
			for (int y = 0; y < height; y++) {
				image.setRGB(x, y, bitMatrix.get(x, y) ? BLACK : WHITE);
			}
		}
//		Graphics2D graphics = image.createGraphics();
//		Image logo = ImageIO.read(new ByteArrayInputStream(Config.bindLogo()));
//		graphics.drawImage(logo, 68, 68, null);
//		graphics.dispose();
//		logo.flush();
		try (ByteArrayOutputStream out = new ByteArrayOutputStream()) {
			ImageIO.write(image, format, out);
			wo.setImage(Base64.encodeBase64String(out.toByteArray()));
		}
		wo.setMeta(meta);
		result.setData(wo);
		audit.log(effectivePerson.getDistinguishedName(), "会议签到码生成.");
		return result;
	}

	private String getApplicationUrl(Boolean sslEnable, String host, int port) {
		if( sslEnable ) {
			return "https://" + host + ":" + port;
		}else {
			return "http://" + host + ":" + port;
		}
	}

	private static final int BLACK = 0xFF000000;
	private static final int WHITE = 0xFFFFFFFF;

	public class Wo extends Bind {

		private static final long serialVersionUID = -3574645735233129236L;

		@FieldDescribe("Base64编码图像.")
		private String image;

		public String getImage() {
			return image;
		}

		public void setImage(String image) {
			this.image = image;
		}

	}

}