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Java 快速实现二维码图片项目路径生成和文件压缩下载

发布2019-10-21浏览1130次

详情内容

Java 快速实现二维码图片项目路径生成和文件压缩下载。Zxing工具类在这个小demo中基本用不到，需要做复杂的二维码还是可以的，如二维码嵌入Logo图片等。

目录

Zxing二维码生成工具

服务器快速二维码图片管理

二维码图片生成工具

图片压缩下载工具

二维码控制器

测试效果

生成二维码

下载ZIP压缩文件

Zxing二维码生成工具

pom.xml

  1. <!-- Google二维码 -->
  2. 		<dependency>
  3. 			<groupId>com.google.zxing</groupId>
  4. 			<artifactId>core</artifactId>
  5. 			<version>3.3.3</version>
  6. 		</dependency>
  7. 		<dependency>
  8. 			<groupId>com.google.zxing</groupId>
  9. 			<artifactId>javase</artifactId>
  10. 			<version>3.3.3</version>
  11. 		</dependency>

QRCodeUtil.java

  1. package com.boonya.util;
  2.  
  3. import java.awt.Color;
  4. import java.awt.Graphics2D;
  5. import java.awt.Image;
  6. import java.awt.image.BufferedImage;
  7. import java.io.File;
  8. import java.io.IOException;
  9. import java.util.Hashtable;
  10. import javax.imageio.ImageIO;
  11. import com.google.zxing.BarcodeFormat;
  12. import com.google.zxing.EncodeHintType;
  13. import com.google.zxing.MultiFormatWriter;
  14. import com.google.zxing.client.j2se.MatrixToImageConfig;
  15. import com.google.zxing.client.j2se.MatrixToImageWriter;
  16. import com.google.zxing.common.BitMatrix;
  17. import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
  18. /**
  19.  * 
  20.  * @function 功能：二维码生成工具
  21.  * @author   PJL
  22.  * @package  com.forestar.util
  23.  * @filename QRCodeUtil.java
  24.  * @time     2019 2019年9月25日 上午11:32:55
  25.  */
  26. public class QRCodeUtil {
  27.     private static int width = 300; // 二维码宽度
  28.     private static int height = 300; // 二维码高度
  29.     private static int onColor = 0xFF000000; // 前景色
  30.     private static int offColor = 0xFFFFFFFF; // 背景色
  31.     private static int margin = 1; // 白边大小，取值范围0~4
  32.     private static ErrorCorrectionLevel level = ErrorCorrectionLevel.L; // 二维码容错率
  33.  
  34.     /**
  35.      * 生成二维码
  36.      * 
  37.      * @param params
  38.      *            QRCodeParams属性：txt、fileName、filePath不得为空；
  39.      * @throws Exception
  40.      */
  41.     public static void generateQRImage(QRCodeParams params)
  42. 	    throws Exception {
  43. 	if (params == null || params.getFileName() == null
  44. 		|| params.getFilePath() == null || params.getTxt() == null) {
  45.  
  46. 	    throw new Exception("二维码参数错误");
  47. 	}
  48. 	try {
  49. 	    initData(params);
  50.  
  51. 	    String imgPath = params.getFilePath();
  52. 	    String imgName = params.getFileName();
  53. 	    String txt = params.getTxt();
  54.  
  55. 	    if (params.getLogoPath() != null
  56. 		    && !"".equals(params.getLogoPath().trim())) {
  57. 		generateQRImage(txt, params.getLogoPath(), imgPath, imgName,
  58. 			params.getSuffixName());
  59. 	    } else {
  60. 		generateQRImage(txt, imgPath, imgName, params.getSuffixName());
  61. 	    }
  62. 	} catch (Exception e) {
  63. 	    e.printStackTrace();
  64. 	}
  65.  
  66.     }
  67.  
  68.     /**
  69.      * 生成二维码
  70.      * 
  71.      * @param txt
  72.      *            //二维码内容
  73.      * @param imgPath
  74.      *            //二维码保存物理路径
  75.      * @param imgName
  76.      *            //二维码文件名称
  77.      * @param suffix
  78.      *            //图片后缀名
  79.      */
  80.     public static void generateQRImage(String txt, String imgPath,
  81. 	    String imgName, String suffix) {
  82.  
  83. 	File filePath = new File(imgPath);
  84. 	if (!filePath.exists()) {
  85. 	    filePath.mkdirs();
  86. 	}
  87.  
  88. 	File imageFile = new File(imgPath, imgName);
  89. 	Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
  90. 	// 指定纠错等级
  91. 	hints.put(EncodeHintType.ERROR_CORRECTION, level);
  92. 	// 指定编码格式
  93. 	hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
  94. 	hints.put(EncodeHintType.MARGIN, margin); // 设置白边
  95. 	try {
  96. 	    MatrixToImageConfig config = new MatrixToImageConfig(onColor,
  97. 		    offColor);
  98. 	    BitMatrix bitMatrix = new MultiFormatWriter().encode(txt,
  99. 		    BarcodeFormat.QR_CODE, width, height, hints);
  100. 	    // bitMatrix = deleteWhite(bitMatrix);
  101. 	    MatrixToImageWriter.writeToPath(bitMatrix, suffix,
  102. 		    imageFile.toPath(), config);
  103. 	} catch (Exception e) {
  104. 	    e.printStackTrace();
  105. 	}
  106.     }
  107.  
  108.     /**
  109.      * 生成带logo的二维码图片
  110.      * 
  111.      * @param txt
  112.      *            //二维码内容
  113.      * @param logoPath
  114.      *            //logo绝对物理路径
  115.      * @param imgPath
  116.      *            //二维码保存绝对物理路径
  117.      * @param imgName
  118.      *            //二维码文件名称
  119.      * @param suffix
  120.      *            //图片后缀名
  121.      * @throws Exception
  122.      */
  123.     public static void generateQRImage(String txt, String logoPath,
  124. 	    String imgPath, String imgName, String suffix) throws Exception {
  125.  
  126. 	File filePath = new File(imgPath);
  127. 	if (!filePath.exists()) {
  128. 	    filePath.mkdirs();
  129. 	}
  130.  
  131. 	if (imgPath.endsWith("/")) {
  132. 	    imgPath += imgName;
  133. 	} else {
  134. 	    imgPath += "/" + imgName;
  135. 	}
  136.  
  137. 	Hashtable<EncodeHintType, Object> hints = new Hashtable<EncodeHintType, Object>();
  138. 	hints.put(EncodeHintType.CHARACTER_SET, "utf-8");
  139. 	hints.put(EncodeHintType.ERROR_CORRECTION, level);
  140. 	hints.put(EncodeHintType.MARGIN, margin); // 设置白边
  141. 	BitMatrix bitMatrix = new MultiFormatWriter().encode(txt,
  142. 		BarcodeFormat.QR_CODE, width, height, hints);
  143. 	File qrcodeFile = new File(imgPath);
  144. 	writeToFile(bitMatrix, suffix, qrcodeFile, logoPath);
  145.     }
  146.  
  147.     /**
  148.      * 
  149.      * @param matrix
  150.      *            二维码矩阵相关
  151.      * @param format
  152.      *            二维码图片格式
  153.      * @param file
  154.      *            二维码图片文件
  155.      * @param logoPath
  156.      *            logo路径
  157.      * @throws IOException
  158.      */
  159.     public static void writeToFile(BitMatrix matrix, String format, File file,
  160. 	    String logoPath) throws IOException {
  161. 	BufferedImage image = toBufferedImage(matrix);
  162. 	Graphics2D gs = image.createGraphics();
  163.  
  164. 	int ratioWidth = image.getWidth() * 2 / 10;
  165. 	int ratioHeight = image.getHeight() * 2 / 10;
  166. 	// 载入logo
  167. 	Image img = ImageIO.read(new File(logoPath));
  168. 	int logoWidth = img.getWidth(null) > ratioWidth ? ratioWidth : img
  169. 		.getWidth(null);
  170. 	int logoHeight = img.getHeight(null) > ratioHeight ? ratioHeight : img
  171. 		.getHeight(null);
  172.  
  173. 	int x = (image.getWidth() - logoWidth) / 2;
  174. 	int y = (image.getHeight() - logoHeight) / 2;
  175.  
  176. 	gs.drawImage(img, x, y, logoWidth, logoHeight, null);
  177. 	gs.setColor(Color.black);
  178. 	gs.setBackground(Color.WHITE);
  179. 	gs.dispose();
  180. 	img.flush();
  181. 	if (!ImageIO.write(image, format, file)) {
  182. 	    throw new IOException("Could not write an image of format "
  183. 		    + format + " to " + file);
  184. 	}
  185.     }
  186.  
  187.     public static BufferedImage toBufferedImage(BitMatrix matrix) {
  188. 	int width = matrix.getWidth();
  189. 	int height = matrix.getHeight();
  190. 	BufferedImage image = new BufferedImage(width, height,
  191. 		BufferedImage.TYPE_INT_RGB);
  192.  
  193. 	for (int x = 0; x < width; x++) {
  194. 	    for (int y = 0; y < height; y++) {
  195. 		image.setRGB(x, y, matrix.get(x, y) ? onColor : offColor);
  196. 	    }
  197. 	}
  198. 	return image;
  199.     }
  200.  
  201.     public static BitMatrix deleteWhite(BitMatrix matrix) {
  202. 	int[] rec = matrix.getEnclosingRectangle();
  203. 	int resWidth = rec[2] + 1;
  204. 	int resHeight = rec[3] + 1;
  205.  
  206. 	BitMatrix resMatrix = new BitMatrix(resWidth, resHeight);
  207. 	resMatrix.clear();
  208. 	for (int i = 0; i < resWidth; i++) {
  209. 	    for (int j = 0; j < resHeight; j++) {
  210. 		if (matrix.get(i + rec[0], j + rec[1]))
  211. 		    resMatrix.set(i, j);
  212. 	    }
  213. 	}
  214. 	return resMatrix;
  215.     }
  216.  
  217.     private static void initData(QRCodeParams params) {
  218. 	if (params.getWidth() != null) {
  219. 	    width = params.getWidth();
  220. 	}
  221. 	if (params.getHeight() != null) {
  222. 	    height = params.getHeight();
  223. 	}
  224. 	if (params.getOnColor() != null) {
  225. 	    onColor = params.getOnColor();
  226. 	}
  227. 	if (params.getOffColor() != null) {
  228. 	    offColor = params.getOffColor();
  229. 	}
  230. 	if (params.getLevel() != null) {
  231. 	    level = params.getLevel();
  232. 	}
  233.  
  234.     }
  235.  
  236. }

QRCodeParams.java

  1. package com.boonya.util;
  2.  
  3. import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
  4. /**
  5.  * 
  6.  * @function 功能：二维码设置参数
  7.  * @author   PJL
  8.  * @package  com.forestar.util
  9.  * @filename QRCodeParams.java
  10.  * @time     2019 2019年9月25日 上午11:00:17
  11.  */
  12. public class QRCodeParams {
  13.  
  14.     private String txt; // 二维码内容
  15.     private String qrCodeUrl; // 二维码网络路径
  16.     private String filePath; // 二维码生成物理路径
  17.     private String fileName; // 二维码生成图片名称（包含后缀名）
  18.     private String logoPath; // logo图片
  19.     private Integer width = 300; // 二维码宽度
  20.     private Integer height = 300; // 二维码高度
  21.     private Integer onColor = 0xFF000000; // 前景色
  22.     private Integer offColor = 0xFFFFFFFF; // 背景色
  23.     private Integer margin = 1; // 白边大小，取值范围0~4
  24.     private ErrorCorrectionLevel level = ErrorCorrectionLevel.L; // 二维码容错率
  25.  
  26.     public String getTxt() {
  27. 	return txt;
  28.     }
  29.  
  30.     public void setTxt(String txt) {
  31. 	this.txt = txt;
  32.     }
  33.  
  34.     public String getFilePath() {
  35. 	return filePath;
  36.     }
  37.  
  38.     public void setFilePath(String filePath) {
  39. 	this.filePath = filePath;
  40.     }
  41.  
  42.     public String getFileName() {
  43. 	return fileName;
  44.     }
  45.  
  46.     public void setFileName(String fileName) {
  47. 	this.fileName = fileName;
  48.     }
  49.  
  50.     public Integer getWidth() {
  51. 	return width;
  52.     }
  53.  
  54.     public void setWidth(Integer width) {
  55. 	this.width = width;
  56.     }
  57.  
  58.     public Integer getHeight() {
  59. 	return height;
  60.     }
  61.  
  62.     public void setHeight(Integer height) {
  63. 	this.height = height;
  64.     }
  65.  
  66.     public String getQrCodeUrl() {
  67. 	return qrCodeUrl;
  68.     }
  69.  
  70.     public void setQrCodeUrl(String qrCodeUrl) {
  71. 	this.qrCodeUrl = qrCodeUrl;
  72.     }
  73.  
  74.     public String getLogoPath() {
  75. 	return logoPath;
  76.     }
  77.  
  78.     public void setLogoPath(String logoPath) {
  79. 	this.logoPath = logoPath;
  80.     }
  81.  
  82.     public Integer getOnColor() {
  83. 	return onColor;
  84.     }
  85.  
  86.     public void setOnColor(Integer onColor) {
  87. 	this.onColor = onColor;
  88.     }
  89.  
  90.     public Integer getOffColor() {
  91. 	return offColor;
  92.     }
  93.  
  94.     public void setOffColor(Integer offColor) {
  95. 	this.offColor = offColor;
  96.     }
  97.  
  98.     public ErrorCorrectionLevel getLevel() {
  99. 	return level;
  100.     }
  101.  
  102.     public void setLevel(ErrorCorrectionLevel level) {
  103. 	this.level = level;
  104.     }
  105.  
  106.     /**
  107.      * 返回文件后缀名
  108.      * 
  109.      * @return
  110.      */
  111.     public String getSuffixName() {
  112. 	String imgName = this.getFileName();
  113. 	if (imgName != null && !"".equals(imgName)) {
  114. 	    String suffix = fileName.substring(fileName.lastIndexOf(".") + 1);
  115. 	    return suffix;
  116. 	}
  117. 	return "";
  118.     }
  119.  
  120.     public Integer getMargin() {
  121. 	return margin;
  122.     }
  123.  
  124.     public void setMargin(Integer margin) {
  125. 	this.margin = margin;
  126.     }
  127.  
  128. }

服务器快速二维码图片管理

二维码图片生成工具

通过操作输出文件流实现：FileGenerateUtils.java

  1. package com.boonya.util;
  2.  
  3. import java.io.File;
  4. import java.io.FileOutputStream;
  5. import java.io.IOException;
  6. import java.io.OutputStream;
  7. import java.net.URISyntaxException;
  8. import java.util.HashMap;
  9. import java.util.Map;
  10. import javax.servlet.http.HttpServletResponse;
  11. import com.boonya.core.util.StringUtils;
  12. import com.google.zxing.BarcodeFormat;
  13. import com.google.zxing.EncodeHintType;
  14. import com.google.zxing.MultiFormatWriter;
  15. import com.google.zxing.WriterException;
  16. import com.google.zxing.client.j2se.MatrixToImageWriter;
  17. import com.google.zxing.common.BitMatrix;
  18. import com.google.zxing.qrcode.decoder.ErrorCorrectionLevel;
  19. /**
  20.  * @function 功能：二维码文件生成到指定路径
  21.  * @author   PJL
  22.  * @package  com.boonya.util
  23.  * @filename FileGenerateUtils.java
  24.  * @time     2019 2019年10月21日 下午1:07:52
  25.  */
  26. public class FileGenerateUtils {
  27. 	
  28. 	private static String FILE_SERVER_ADDRESS="";
  29. 	
  30. 	static{
  31. 		try {
  32. 			FILE_SERVER_ADDRESS = FileGenerateUtils.class.getResource("").toURI().getPath();
  33. 		} catch (URISyntaxException e) {
  34. 			e.printStackTrace();
  35. 		}
  36. 		FILE_SERVER_ADDRESS = FILE_SERVER_ADDRESS.substring(0,FILE_SERVER_ADDRESS.lastIndexOf("/WEB-INF/") + 1);
  37. 		if(!FILE_SERVER_ADDRESS.endsWith("/")){
  38. 			FILE_SERVER_ADDRESS+="/";
  39. 		}
  40. 	}
  41. 	
  42. 	/**
  43. 	 * 获取文件基础路径
  44. 	 * 
  45. 	 * @return
  46. 	 */
  47. 	public static String getBasePath(){
  48. 		return FILE_SERVER_ADDRESS;
  49. 	}
  50. 	
  51. 	/**
  52. 	 * 获取相对路径
  53. 	 * @param qrcode
  54. 	 * @return
  55. 	 */
  56. 	public static String getRelativePath(String qrcode){
  57. 		String sheng=qrcode.substring(0,2);
  58. 		String shi=qrcode.substring(0,4);
  59. 		String xian=qrcode.substring(0,6);
  60. 		return "/qrcode/"+sheng+"/"+shi+"/"+xian+"/"+qrcode+".png";
  61. 	}
  62. 	
  63. 	/**
  64. 	 * 获取固定规则的文件路径
  65. 	 * @param qrcode
  66. 	 * @return
  67. 	 */
  68. 	public static String getFilePath(String qrcode){
  69. 		String sheng=qrcode.substring(0,2);
  70. 		String shi=qrcode.substring(0,4);
  71. 		String xian=qrcode.substring(0,6);
  72. 		File xianPath=new File(FILE_SERVER_ADDRESS+"qrcode/"+sheng+"/"+shi+"/"+xian);
  73. 		if(!xianPath.exists()){
  74. 			xianPath.mkdirs();
  75. 		}
  76. 		String filePath=xianPath.getPath()+"/"+qrcode+".png";
  77. 		return filePath;
  78. 	}
  79. 	
  80. 	/**
  81. 	 * 创建二维码路径和文件
  82. 	 * 
  83. 	 * @param qrcode
  84. 	 * @throws Exception 
  85. 	 */
  86. 	public static String mkdirAndFile(String qrcode) throws Exception{
  87. 		String filePath=getFilePath(qrcode);
  88. 		File path=new File(filePath);
  89. 		if(!path.exists()){
  90. 			path.createNewFile();
  91. 		}
  92. 		return filePath;
  93. 	}
  94. 	
  95. 	/**
  96. 	 * 根据二维码编号写入文件流到指定路径
  97. 	 * @param qrcode
  98. 	 * @return
  99. 	 * @throws Exception
  100. 	 */
  101. 	public static boolean generateQRCodeImage(String qrcode) throws Exception{
  102. 		if(StringUtils.isEmpty(qrcode)){
  103. 			return false;
  104. 		}
  105. 		String filePath=mkdirAndFile(qrcode);
  106. 		FileOutputStream outputStream=new FileOutputStream(filePath); 
  107. 		generateStreamFile(qrcode, outputStream);
  108. 		return true;
  109. 	}
  110. 	
  111. 	/**
  112. 	 * 根据二维码编号写入文件流到指定路径
  113. 	 * @param qrcode
  114. 	 * @return
  115. 	 * @throws Exception
  116. 	 */
  117. 	public static boolean generateQRCodeImage(String filePath,String qrcode) throws Exception{
  118. 		if(StringUtils.isEmpty(qrcode)){
  119. 			return false;
  120. 		}
  121. 		FileOutputStream outputStream=new FileOutputStream(filePath); 
  122. 		generateStreamFile(qrcode, outputStream);
  123. 		return true;
  124. 	}
  125. 	
  126. 	
  127. 	/**
  128. 	 * 服务器文件——生成流式二维码
  129. 	 * 
  130. 	 * @param qParam
  131. 	 * @param content
  132. 	 * @param outputStream
  133. 	 * @throws WriterException
  134. 	 * @throws IOException
  135. 	 */
  136. 	private static void generateStreamFile(String content,OutputStream outputStream) throws WriterException, IOException {
  137. 		String baseUrl = ConfigUtil.getConfig("google.zxing.url");
  138. 		int width = Integer
  139. 				.parseInt(ConfigUtil.getConfig("google.zxing.width"));
  140. 		int height = Integer.parseInt(ConfigUtil
  141. 				.getConfig("google.zxing.height"));
  142. 		String format = ConfigUtil.getConfig("google.zxing.format");
  143. 		String qrContent = baseUrl + "/showPage.do?GSBH=" + content;
  144. 		Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
  145. 		// 指定编码格式
  146. 		hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
  147. 		// 指定纠错级别(L--7%,M--15%,Q--25%,H--30%)
  148. 		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
  149. 		// 编码内容,编码类型(这里指定为二维码),生成图片宽度,生成图片高度,设置参数
  150. 		BitMatrix bitMatrix = new MultiFormatWriter().encode(qrContent,BarcodeFormat.QR_CODE, width, height, hints);
  151. 		MatrixToImageWriter.writeToStream(bitMatrix, format, outputStream);
  152. 		outputStream.flush();
  153. 		outputStream.close();
  154. 	}
  155. 	
  156. 	
  157. 	/**
  158. 	 * 浏览器响应——生成流式二维码
  159. 	 * 
  160. 	 * @param qParam
  161. 	 * @param content
  162. 	 * @param response
  163. 	 * @throws WriterException
  164. 	 * @throws IOException
  165. 	 */
  166. 	public static void generateStreamFileForBrowser(String content,
  167. 			HttpServletResponse response) throws WriterException, IOException {
  168. 		String baseUrl = ConfigUtil.getConfig("google.zxing.url");
  169. 		int width = Integer
  170. 				.parseInt(ConfigUtil.getConfig("google.zxing.width"));
  171. 		int height = Integer.parseInt(ConfigUtil
  172. 				.getConfig("google.zxing.height"));
  173. 		String format = ConfigUtil.getConfig("google.zxing.format");
  174. 		String qrContent = baseUrl + "/showPage.do?GSBH=" + content;
  175. 		Map<EncodeHintType, Object> hints = new HashMap<EncodeHintType, Object>();
  176. 		// 指定编码格式
  177. 		hints.put(EncodeHintType.CHARACTER_SET, "UTF-8");
  178. 		// 指定纠错级别(L--7%,M--15%,Q--25%,H--30%)
  179. 		hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);
  180. 		// 编码内容,编码类型(这里指定为二维码),生成图片宽度,生成图片高度,设置参数
  181. 		BitMatrix bitMatrix = new MultiFormatWriter().encode(qrContent,
  182. 				BarcodeFormat.QR_CODE, width, height, hints);
  183. 		// 设置请求头
  184. 		response.setHeader("Content-Type", "application/octet-stream");
  185. 		response.setHeader("Content-Disposition", "attachment;filename="
  186. 				+ content + "." + format);
  187. 		OutputStream outputStream = response.getOutputStream();
  188. 		MatrixToImageWriter.writeToStream(bitMatrix, format, outputStream);
  189. 		outputStream.flush();
  190. 		outputStream.close();
  191. 	}
  192.  
  193. }

图片压缩下载工具

FileZipUtils.java

  1. package com.boonya.util;
  2.  
  3. import javax.servlet.http.HttpServletResponse;
  4. import java.io.*;
  5. import java.util.ArrayList;
  6. import java.util.List;
  7. import java.util.zip.ZipEntry;
  8. import java.util.zip.ZipOutputStream;
  9.  
  10. /**
  11.  * @ClassName: FileZipUtils
  12.  * @Description: TODO(功能说明:文件压缩及下载)
  13.  * @author: pengjunlin
  14.  * @motto: 学习需要毅力，那就秀毅力
  15.  * @date 2019/10/16 23:23
  16.  */
  17. public class FileZipUtils {
  18.  
  19.     /**
  20.      * 把文件打成压缩包并保存在本地硬盘
  21.      */
  22.     public static void saveZipFiles(List<String> srcfiles, String zipFilePath, String zipFileName) {
  23.         try {
  24.             // 创建文件夹
  25.             File file = new File(zipFilePath);
  26.             if (!file.exists()) {
  27.                 file.mkdirs();
  28.             }
  29.             // 创建zip输出流
  30.             ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFilePath + File.separator + zipFileName));
  31.             // 循环将源文件列表添加到zip文件中
  32.             zipFile(srcfiles, zos);
  33.         } catch (IOException e) {
  34.             e.printStackTrace();
  35.         }
  36.     }
  37.  
  38.     /**
  39.      * 把文件打成压缩包并输出到客户端浏览器中
  40.      */
  41.     public static void downloadZipFiles(HttpServletResponse response, List<String> srcFiles, String zipFileName) {
  42.         try {
  43.             response.reset(); // 重点突出
  44.             response.setCharacterEncoding("UTF-8"); // 重点突出ss
  45.             response.setContentType("application/x-msdownload"); // 不同类型的文件对应不同的MIME类型 // 重点突出
  46.             // 对文件名进行编码处理中文问题
  47.             zipFileName = new String(zipFileName.getBytes(), "UTF-8");
  48.             // inline在浏览器中直接显示，不提示用户下载
  49.             // attachment弹出对话框，提示用户进行下载保存本地
  50.             // 默认为inline方式
  51.             response.setHeader("Content-Disposition", "attachment;filename=" + zipFileName);
  52.  
  53.             // --设置成这样可以不用保存在本地，再输出， 通过response流输出,直接输出到客户端浏览器中。
  54.             ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());
  55.             zipFile(srcFiles, zos);
  56.         } catch (IOException e) {
  57.             e.printStackTrace();
  58.         }
  59.     }
  60.  
  61.     /**
  62.      * 压缩文件
  63.      *
  64.      * @param filePaths 需要压缩的文件路径集合
  65.      * @throws IOException
  66.      */
  67.     private static void zipFile(List<String> filePaths, ZipOutputStream zos) {
  68.         //设置读取数据缓存大小
  69.         byte[] buffer = new byte[4096];
  70.         try {
  71.             //循环读取文件路径集合，获取每一个文件的路径
  72.             for (String filePath : filePaths) {
  73.                 File inputFile = new File(filePath);
  74.                 //判断文件是否存在
  75.                 if (inputFile.exists()) {
  76.                     //判断是否属于文件，还是文件夹
  77.                     if (inputFile.isFile()) {
  78.                         //创建输入流读取文件
  79.                         BufferedInputStream bis = new BufferedInputStream(new FileInputStream(inputFile));
  80.                         //将文件写入zip内，即将文件进行打包
  81.                         zos.putNextEntry(new ZipEntry(inputFile.getName()));
  82.                         //写入文件的方法，同上
  83.                         int size = 0;
  84.                         //设置读取数据缓存大小
  85.                         while ((size = bis.read(buffer)) > 0) {
  86.                             zos.write(buffer, 0, size);
  87.                         }
  88.                         //关闭输入输出流
  89.                         zos.closeEntry();
  90.                         bis.close();
  91.                     } else {  //如果是文件夹，则使用穷举的方法获取文件，写入zip
  92.                         File[] files = inputFile.listFiles();
  93.                         List<String> filePathsTem = new ArrayList<String>();
  94.                         for (File fileTem : files) {
  95.                             filePathsTem.add(fileTem.toString());
  96.                         }
  97.                         zipFile(filePathsTem, zos);
  98.                     }
  99.                 }
  100.             }
  101.         } catch (IOException e) {
  102.             e.printStackTrace();
  103.         } finally {
  104.             if (null != zos) {
  105.                 try {
  106.                     zos.close();
  107.                 } catch (IOException e) {
  108.                     e.printStackTrace();
  109.                 }
  110.             }
  111.         }
  112.     }
  113.  
  114.     /**
  115.      * 删除指定文件或文件夹下所有文件
  116.      *
  117.      * @param path 文件夹完整绝对路径
  118.      * @return
  119.      */
  120.     public static boolean delAllFile(String path) {
  121.         File file = new File(path);
  122.         if (!file.exists()) {
  123.             return false;
  124.         }
  125.         if (file.isFile()) {
  126.             return file.delete();
  127.         }
  128.         if (file.isDirectory()) {
  129.             String[] fileList = file.list();
  130.             String tempFilePath = null;
  131.             for (String tempFileName : fileList) {
  132.                 if (path.endsWith(File.separator)) {
  133.                     tempFilePath = path + tempFileName;
  134.                 } else {
  135.                     tempFilePath = path + File.separator + tempFileName;
  136.                 }
  137.                 delAllFile(tempFilePath);
  138.             }
  139.             file.delete();
  140.         }
  141.         return true;
  142.     }
  143.  
  144. }

二维码控制器

QRCodeController.java

  1. package com.boonya.controller;
  2.  
  3. import java.io.File;
  4. import java.text.SimpleDateFormat;
  5. import java.util.ArrayList;
  6. import java.util.Date;
  7. import java.util.HashMap;
  8. import java.util.List;
  9. import java.util.Map;
  10. import javax.servlet.http.HttpServletRequest;
  11. import javax.servlet.http.HttpServletResponse;
  12. import org.apache.log4j.Logger;
  13. import org.springframework.beans.factory.annotation.Autowired;
  14. import org.springframework.stereotype.Controller;
  15. import org.springframework.web.bind.annotation.RequestMapping;
  16. import org.springframework.web.bind.annotation.ResponseBody;
  17. import com.alibaba.fastjson.JSONArray;
  18. import com.alibaba.fastjson.JSONObject;
  19. import com.boonya.core.util.StringUtils;
  20. import com.boonya.data.general.QueryFilter;
  21. import com.boonya.data.general.RowBase;
  22. import com.boonya.data.service.BaseService;
  23. import com.boonya.util.FileGenerateUtils;
  24. import com.boonya.util.FileZipUtils;
  25.  
  26. /**
  27.  * 
  28.  * @function 功能：二维码工具类(/RestService为不拦截地址)
  29.  * @author PJL
  30.  * @package com.boonya.controller
  31.  * @filename QRCodeController.java
  32.  * @time 2019 2019年9月25日 上午10:41:25
  33.  */
  34. @Controller
  35. public class QRCodeController {
  36. 	
  37. 	@Autowired
  38. 	BaseService baseDataService;
  39.  
  40. 	
  41. 	SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
  42.  
  43. 	private static Logger logger = Logger.getLogger(QRCodeController.class);
  44.  
  45.  
  46. 	/**
  47. 	 * 流式二维码地址
  48. 	 * 
  49. 	 * @param request
  50. 	 * @param response
  51. 	 * @throws Exception
  52. 	 */
  53. 	@RequestMapping("/RestService/qrcode/downloadSingle.do")
  54. 	public void download(HttpServletRequest request,
  55. 			HttpServletResponse response) throws Exception {
  56. 		logger.info(">>>download single QRCode Image from browser.");
  57. 		// 二维码中包含的信息
  58. 		String content = request.getParameter("content");
  59. 		if (StringUtils.isEmpty(content)) {
  60. 			content = sdf.format(new Date());
  61. 			logger.info(">>>download a date param QRCode Image from browser.");
  62. 		}
  63. 		FileGenerateUtils.generateStreamFileForBrowser(content, response);
  64. 	}
  65. 	
  66. 	/**
  67. 	 * 获取二维码图片列表
  68. 	 * @param rows
  69. 	 * @param srcFiles
  70. 	 * @throws Exception
  71. 	 */
  72. 	@SuppressWarnings({ "rawtypes", "unchecked" })
  73. 	private void getQRCodeImageSrcList(List<RowBase> rows,List<String> srcFiles) throws Exception{
  74. 		if(null==rows){
  75. 			return ;
  76. 		}
  77. 		File file=null;
  78. 		RowBase row=null;
  79. 		for (RowBase rowBase : rows) {
  80. 			String gsbh=(String) rowBase.getOriginalObjects().get("GSBH");
  81. 			String ewm=(String) rowBase.getOriginalObjects().get("EWM");
  82. 			String filePath=FileGenerateUtils.getFilePath(gsbh);
  83. 			file=new File(filePath);
  84. 			if(!file.exists()){
  85. 				// 生成已审核的记录的二维码==监测记录不存在文件重新生成
  86. 				FileGenerateUtils.generateQRCodeImage(filePath, gsbh);
  87. 				/**更新二维码字段----S***/
  88. 				String relativePath=FileGenerateUtils.getRelativePath(gsbh);
  89. 				HashMap<String,Object> oriMap = new HashMap<String, Object>();//历史map
  90. 				oriMap.put("PK_UID",Long.valueOf(rowBase.getOriginalObjects().get("PK_UID").toString()));
  91. 				HashMap<String,Object> curMap = new HashMap<String, Object>();//当前map
  92. 				curMap.put("EWM", relativePath);
  93. 				row = new RowBase();
  94. 				row.setOriginalObjects(oriMap);
  95. 				row.setCurrentObjects(curMap);
  96. 				baseDataService.save("HNGS_GSMM_PT", row);
  97. 				/**更新二维码字段----E***/
  98. 			}
  99. 			srcFiles.add(filePath);
  100. 		}
  101. 	}
  102. 	
  103.  
  104. 	
  105. 	/**
  106. 	 * 批量导出二维码文件(ZIP压缩文件)
  107. 	 * 
  108. 	 * @param request
  109. 	 * @param response
  110. 	 * @throws Exception
  111. 	 */
  112. 	@SuppressWarnings({ "rawtypes" })
  113. 	@RequestMapping("/RestService/qrcode/downloadZip.do")
  114. 	public void downloadZip(HttpServletRequest request,
  115. 			HttpServletResponse response) throws Exception {
  116. 		logger.info(">>>download zip QRCode Image from browser.");
  117. 		String zipFileName=sdf.format(new Date())+".zip";
  118. 		String IDS = request.getParameter("IDS");
  119. 		IDS=IDS==null?"[]":IDS;// 设置ID为空
  120. 		List<String> srcFiles=new ArrayList<String>();
  121. 		JSONArray jsonArray=JSONObject.parseArray(IDS);
  122. 		StringBuffer sb=new StringBuffer();
  123. 		for (int i = 0,j=jsonArray.size(); i < j; i++) {
  124. 			if(i==0){
  125. 				sb.append(jsonArray.get(i).toString());
  126. 			}else{
  127. 				sb.append(",").append(jsonArray.get(i).toString());
  128. 			}
  129. 		}
  130. 		String checkdIds=sb.toString();
  131. 		QueryFilter filter=new QueryFilter();
  132. 		filter.setSelectFields("PK_UID,GSBH,EWM");
  133. 		if(checkdIds.length()>0){
  134. 			filter.setWhereString("SHZT='2'  AND CZDB='2' AND CZJD='3' AND PK_UID IN ("+checkdIds+")");
  135. 		}else{
  136. 			filter.setWhereString("SHZT='2'  AND CZDB='2' AND CZJD='3'");
  137. 		}
  138. 		List<RowBase> rows=baseDataService.getDataTable("HNGS_GSMM_PT", filter) ;
  139. 		getQRCodeImageSrcList(rows, srcFiles);
  140. 		if(srcFiles.size()>0){
  141. 			FileZipUtils.downloadZipFiles(response, srcFiles, zipFileName);
  142. 		}else{
  143. 			String errorTxt="没有查询到已审核记录，请请审核后再执行导出!";
  144. 			String fileName="UNEXCEPT_RESULT.txt";
  145. 			// 设置请求头
  146. 			response.setHeader("Content-Type", "application/txt");
  147. 			response.setHeader("Content-Disposition", "attachment;filename="+fileName);
  148. 			response.getOutputStream().write(errorTxt.getBytes());
  149. 			response.getOutputStream().flush();
  150. 			response.getOutputStream().close();
  151. 		}
  152. 	}
  153. 	
  154. 	/**
  155. 	 * 生成二维码到服务器(支持单个、多个、所有)
  156. 	 * 
  157. 	 * @param request
  158. 	 * @param response
  159. 	 * @throws Exception
  160. 	 */
  161. 	@SuppressWarnings({ "rawtypes", "unchecked" })
  162. 	@RequestMapping("/RestService/qrcode/generateQRCode.do")
  163. 	@ResponseBody
  164. 	public  Map<String, Object>  generateQRCode(HttpServletRequest request,
  165. 			HttpServletResponse response) throws Exception {
  166. 		 logger.info(">>>generate QRCode Image on server.");
  167. 		 String IDS = request.getParameter("IDS");
  168. 		 IDS=IDS==null?"[]":IDS;// 设置ID为空
  169. 		 JSONArray jsonArray=JSONObject.parseArray(IDS);
  170. 		 StringBuffer sb=new StringBuffer();
  171. 		 for (int i = 0,j=jsonArray.size(); i < j; i++) {
  172. 			if(i==0){
  173. 				sb.append(jsonArray.get(i).toString());
  174. 			}else{
  175. 				sb.append(",").append(jsonArray.get(i).toString());
  176. 			}
  177. 		 }
  178. 		 String checkdIds=sb.toString();
  179. 		 QueryFilter filter=new QueryFilter();
  180. 		 filter.setSelectFields("PK_UID,GSBH,EWM");
  181. 		 if(checkdIds.length()>0){
  182. 			 filter.setWhereString("SHZT='2'  AND CZDB='2' AND CZJD='3' AND PK_UID IN ("+checkdIds+")");
  183. 		 }else{
  184. 			 filter.setWhereString("SHZT='2'  AND CZDB='2' AND CZJD='3'");
  185. 		 }
  186. 		 List<RowBase> rows=baseDataService.getDataTable("HNGS_GSMM_PT", filter) ;
  187. 		 RowBase row=null;
  188. 		 File file=null;
  189. 		 List<String> gsbhList=new ArrayList<String>();
  190. 		 List<String> fileList=new ArrayList<String>();
  191. 		 for (RowBase rowBase : rows) {
  192. 			String gsbh=(String) rowBase.getOriginalObjects().get("GSBH");
  193. 			String filePath=FileGenerateUtils.getFilePath(gsbh);
  194. 			file=new File(filePath);
  195. 			boolean exists=true;
  196. 			if(!file.exists()){
  197. 				FileGenerateUtils.mkdirAndFile(gsbh);
  198. 				exists=false;
  199. 			}
  200. 			boolean	success=FileGenerateUtils.generateQRCodeImage(filePath,gsbh);
  201. 			gsbhList.add(gsbh);
  202. 			if(success&&!exists){
  203. 				/**更新二维码字段----S***/
  204. 				String relativePath=FileGenerateUtils.getRelativePath(gsbh);
  205. 				HashMap<String,Object> oriMap = new HashMap<String, Object>();//历史map
  206. 				oriMap.put("PK_UID",Long.valueOf(rowBase.getOriginalObjects().get("PK_UID").toString()));
  207. 				HashMap<String,Object> curMap = new HashMap<String, Object>();//当前map
  208. 				curMap.put("EWM", relativePath);
  209. 				row = new RowBase();
  210. 				row.setOriginalObjects(oriMap);
  211. 				row.setCurrentObjects(curMap);
  212. 				baseDataService.save("HNGS_GSMM_PT", row);
  213. 				/**更新二维码字段----E***/
  214. 				fileList.add(relativePath);
  215. 			}
  216. 		 }
  217. 		 Map<String, Object> result = new HashMap<String, Object>();
  218. 		 result.put("success",true );
  219. 		 result.put("gsbhList", gsbhList);
  220. 		 result.put("fileList", fileList);
  221. 		 return result;
  222. 	}
  223. 	
  224. 	/**
  225. 	 * 二维码信息跳转地址
  226. 	 * 
  227. 	 * @param request
  228. 	 * @param response
  229. 	 * @throws Exception
  230. 	 */
  231. 	@RequestMapping("/RestService/qrcode/showPage.do")
  232. 	public String showPage(HttpServletRequest request,
  233. 			HttpServletResponse response) throws Exception {
  234. 		logger.info(">>>scan QRCode Image transfer page.");
  235. 		String gsbh = request.getParameter("content");
  236. 		if (!StringUtils.isEmpty(gsbh)) {
  237. 			return "/qrcode/gsmm";
  238. 		} else {
  239. 			return "/qrcode/date";
  240. 		}
  241. 	}
  242.  
  243.  
  244. }

测试效果

生成二维码

注意：业务使用时注意存储路径写相对路径，可以使用NGINX代理访问

下载ZIP压缩文件

 

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