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@ -30,95 +30,6 @@ import java.util.List;
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* @Version: 1.0
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*/
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public class Jpg2PdfUtil {
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static Logger logger = LoggerFactory.getLogger(Jpg2PdfUtil.class);
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public static void imageToPdf(HttpServletResponse response, List<String> filePaths, String pdfName) throws Exception{
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// 实例化图牿
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Image image = null;
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pdfName = java.net.URLEncoder.encode(pdfName, "UTF-8");
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Document doc = openDocument(response, pdfName);
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try {
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for (String filePath : filePaths) {
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File file1 = new File(filePath);
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if(file1.exists()){
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if (file1.getName().endsWith(".tif") || file1.getName().endsWith(".tiff")) {
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Object localObject1 = null;
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Object localObject2 = null;
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URL paramURL = Utilities.toURL(filePath);
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try {
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if (paramURL.getProtocol().equals("file")) {
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localObject2 = paramURL.getFile();
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localObject2 = Utilities
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.unEscapeURL((String) localObject2);
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localObject1 = new RandomAccessFileOrArray(
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(String) localObject2);
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} else {
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localObject1 = new RandomAccessFileOrArray(paramURL);
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}
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int pageNums = TiffImage
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.getNumberOfPages((RandomAccessFileOrArray) localObject1);
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if (pageNums > 0) {
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for (int i = 1; i <= pageNums; i++) {
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localObject2 = TiffImage.getTiffImage(
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(RandomAccessFileOrArray) localObject1, i);
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image = (Image) localObject2;
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}
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}
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if (localObject1 != null) {
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((RandomAccessFileOrArray) localObject1).close();
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}
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} finally {
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if (localObject1 != null) {
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((RandomAccessFileOrArray) localObject1).close();
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}
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}
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}else if (file1.getName().endsWith(".png")
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|| file1.getName().endsWith(".jpg")
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|| file1.getName().endsWith(".gif")
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|| file1.getName().endsWith(".jpeg")
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) {
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// 实例化图牿
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image = Image.getInstance(filePath);
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}
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// 获得图片的高庿
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float heigth = image.getHeight();
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float width = image.getWidth();
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// 合理压缩，h>w，按w压缩，否则按w压缩
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int percent = getPercent(heigth, width);
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// 设置图片居中显示
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//image.setAlignment(Image.MIDDLE);
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image.setAlignment(Image.ALIGN_CENTER);
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//image.scaleAbsolute(500, 400);
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// 按百分比显示图片的比便
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if (width > 1024 || heigth > 786) {
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image.scalePercent(percent+5);
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}
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doc.add(image);
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}
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}
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} catch (Exception e) {
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e.printStackTrace();
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} finally {
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if (doc.isOpen()) {
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doc.close();
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}
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}
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}
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private static Document openDocument(HttpServletResponse response,String pdfName) throws Exception{
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Document doc = new Document();
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response.reset();
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response.setCharacterEncoding("utf-8");
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response.setContentType("application/pdf"); // word格式
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response.setHeader("Content-Disposition", "attachment; filename=" + pdfName+ "("+ new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new Date()) +").pdf");
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// 定义输出文件的位罿
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PdfWriter.getInstance(doc,response.getOutputStream());
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// 开启文桿
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doc.open();
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return doc;
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}
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/**
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* 利用itext打开pdf文档
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*/
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@ -162,25 +73,23 @@ public class Jpg2PdfUtil {
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if(!files.isEmpty()){
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// pdf合并工具类
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Document document = null;
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ByteArrayOutputStream bos = null;
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ByteArrayOutputStream bos = new ByteArrayOutputStream();
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PdfCopy copy = null;
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PdfReader reader = null;
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PdfReader pdfReader = null;
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try {
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response.reset();
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document = new Document(new PdfReader(files.get(0)).getPageSize(1));
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copy = new PdfCopy(document,response.getOutputStream());
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document.open();
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bos = new ByteArrayOutputStream();
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for (String file : files) {
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bos.flush();
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PdfReader reader = new PdfReader(file);
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PdfReader pdfReader = null;
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//判断是否加水印
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if (StringUtils.isNotBlank(waterMarkName)) {
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setWatermark(bos, file, waterMarkName, null);
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setWatermark(bos, reader, waterMarkName, null);
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pdfReader = new PdfReader(bos.toByteArray());
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}
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reader = new PdfReader(file);
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int n = reader.getNumberOfPages();
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pdfReader = new PdfReader(bos.toByteArray());
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for (int j = 1; j <= n; j++) {
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document.newPage();
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PdfImportedPage page = null;
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@ -191,6 +100,10 @@ public class Jpg2PdfUtil {
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}
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copy.addPage(page);
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}
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if(pdfReader != null){
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pdfReader.close();
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}
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reader.close();
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}
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}catch (Exception e){
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e.printStackTrace();
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@ -198,19 +111,11 @@ public class Jpg2PdfUtil {
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if(null != copy){
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copy.close();
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}
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if(pdfReader != null){
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pdfReader.close();
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}
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if(null != reader){
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reader.close();
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}
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if(null != bos){
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try {
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bos.flush();
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bos.close();
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}catch (Exception e){
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e.printStackTrace();
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}
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try {
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bos.flush();
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bos.close();
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}catch (Exception e){
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e.printStackTrace();
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}
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if(null != document){
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document.close();
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@ -221,11 +126,9 @@ public class Jpg2PdfUtil {
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//加水印
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private static void setWatermark(ByteArrayOutputStream bos, String input, String waterMarkName, String imgPath){
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PdfReader reader = null;
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public static void setWatermark(ByteArrayOutputStream bos, PdfReader reader, String waterMarkName, String imgPath){
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PdfStamper stamper = null;
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try {
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reader = new PdfReader(input);
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stamper = new PdfStamper(reader, bos);
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int total = reader.getNumberOfPages() + 1;
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PdfContentByte content;
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@ -235,7 +138,6 @@ public class Jpg2PdfUtil {
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content = stamper.getOverContent(i);// 在内容上方加水印
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//加文字水印
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if(StringUtils.isNotBlank(waterMarkName)) {
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gs.setFillOpacity(0.3f);
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gs.setStrokeOpacity(0.3f);
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content.setGState(gs);
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@ -269,29 +171,9 @@ public class Jpg2PdfUtil {
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try {
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assert stamper != null;
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stamper.close();
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reader.close();
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} catch (DocumentException | IOException e) {
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e.printStackTrace();
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}
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}
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}
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/**
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* 在不改变图片形状的同时，判断，如果h>w，则按h压缩，否则在w>h或w=h的情况下，按宽度压缩
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* @param h
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* @param w
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* @return
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*/
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private static int getPercent(float h, float w) {
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int p = 0;
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float p2 = 0.0f;
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if (h > w) {
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p2 = 210 / h * 279;
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} else {
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p2 = 210 / w * 279;
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}
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p = Math.round(p2);
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return p;
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}
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}
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