iText实战--在现有PDF上工作

gqltt2023-09-16 20:04

6.1 使用PdfReader读取PDF

检索文档和页面信息

D:/data/iText/inAction/chapter03/image_direct.pdf
Number of pages: 1
Size of page 1: [0.0,0.0,283.0,416.0]
Rotation of page 1: 0
Page size with rotation of page 1: Rectangle: 283.0x416.0 (rot: 0 degrees)
Is rebuilt? false
Is encrypted? false

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.PrintWriter;

import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfReader;


public class PageInformation {

	/** The resulting text file with info about a PDF. */
    public static final String RESULT
        = "D:/data/iText/inAction/chapter06/page_info.txt";
    
    /**
     * Main method.
     * @param args no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
    public static void main(String[] args)
        throws DocumentException, IOException {
        // Inspecting PDFs
        PrintWriter writer = new PrintWriter(new FileOutputStream(RESULT));
        inspect(writer, "D:/data/iText/inAction/chapter03/image_direct.pdf");
        writer.close();
    }
    
    /**
     * Inspect a PDF file and write the info to a txt file
     * @param writer Writer to a text file
     * @param filename Path to the PDF file
     * @throws IOException
     */
    public static void inspect(PrintWriter writer, String filename)
        throws IOException {
        PdfReader reader = new PdfReader(filename);
        writer.println(filename);
        writer.print("Number of pages: ");
        writer.println(reader.getNumberOfPages());
        Rectangle mediabox = reader.getPageSize(1);
        writer.print("Size of page 1: [");
        writer.print(mediabox.getLeft());
        writer.print(',');
        writer.print(mediabox.getBottom());
        writer.print(',');
        writer.print(mediabox.getRight());
        writer.print(',');
        writer.print(mediabox.getTop());
        writer.println("]");
        writer.print("Rotation of page 1: ");
        writer.println(reader.getPageRotation(1));
        writer.print("Page size with rotation of page 1: ");
        writer.println(reader.getPageSizeWithRotation(1));
        writer.print("Is rebuilt? ");
        writer.println(reader.isRebuilt());
        writer.print("Is encrypted? ");
        writer.println(reader.isEncrypted());
        writer.println();
        writer.flush();
    }
}

Page Size 页面大小

损坏的PDF

加密的PDF

使用PdfReader降低内存

部分读取

    /**
     * Do a full read of a PDF file
     * @param writer a writer to a report file
     * @param filename the file to read
     * @throws IOException
     */
    public static void fullRead(PrintWriter writer, String filename)
        throws IOException {
        long before = getMemoryUse();
        PdfReader reader = new PdfReader(filename);
        reader.getNumberOfPages();
        writer.println(String.format("Memory used by full read: %d",
                    getMemoryUse() - before));
        writer.flush();
    }
    
    /**
     * Do a partial read of a PDF file
     * @param writer a writer to a report file
     * @param filename the file to read
     * @throws IOException
     */
    public static void partialRead(PrintWriter writer, String filename)
        throws IOException {
        long before = getMemoryUse();
        PdfReader reader = new PdfReader(
                new RandomAccessFileOrArray(filename), null);
        reader.getNumberOfPages();
        writer.println(String.format("Memory used by partial read: %d",
                    getMemoryUse() - before));
        writer.flush();
    }

选择页面

PdfReader.selectPages("3");

PdfReader.selectPages("4-8");

执行selectPages()后，页数就变成选中的实际页数，要注意越界。

import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfCopy;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;

public class SelectPages {

	/** A resulting PDF file. */
    public static final String RESULT1 = "results/part2/chapter06/timetable_stamper.pdf";
	/** A resulting PDF file. */
    public static final String RESULT2 = "results/part2/chapter06/timetable_copy.pdf"; 
    
    /**
     * Main method.
     * @param args no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
    public static void main(String[] args) throws IOException, DocumentException {
        PdfReader reader = new PdfReader("D:/data/iText/inAction/chapter03/movie_posters.pdf");
        reader.selectPages("4-8");
        manipulateWithStamper(reader);
        manipulateWithCopy(reader);
    }

    /**
     * Creates a new PDF based on the one in the reader
     * @param reader a reader with a PDF file
     * @throws IOException
     * @throws DocumentException
     */
    private static void manipulateWithStamper(PdfReader reader)
        throws IOException, DocumentException {
        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(RESULT1));
        stamper.close();
    }

    /**
     * Creates a new PDF based on the one in the reader
     * @param reader a reader with a PDF file
     * @throws IOException
     * @throws DocumentException
     */
    private static void manipulateWithCopy(PdfReader reader)
        throws IOException, DocumentException {
        int n = reader.getNumberOfPages();
        Document document = new Document();
        PdfCopy copy = new PdfCopy(document, new FileOutputStream(RESULT2));
        document.open();
        for (int i = 0; i < n;) {
            copy.addPage(copy.getImportedPage(reader, ++i));
        }
        document.close();
    }
    
    
}

6.2 从PDF拷贝页面

导入页面

import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;

public class ImportingPages1 {

    /** The resulting PDF file. */
    public static final String RESULT
        = "D:/data/iText/inAction/chapter06/time_table_imported1.pdf";
    
    /**
     * Main method.
     * @param args no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
    public static void main(String[] args)
        throws IOException, DocumentException {
        // step 1
        Document document = new Document();
        // step 2
        PdfWriter writer
            = PdfWriter.getInstance(document, new FileOutputStream(RESULT));
        // step 3
        document.open();
        // step 4
        PdfPTable table = new PdfPTable(2);
        PdfReader reader = new PdfReader("D:/data/iText/inAction/chapter03/movie_posters.pdf");
        int n = reader.getNumberOfPages();
        PdfImportedPage page;
        for (int i = 1; i <= n; i++) {
            page = writer.getImportedPage(reader, i);
            table.addCell(Image.getInstance(page));
        }
        document.add(table);
        // step 5
        document.close();
    }
}

缩放和叠加页面

叠加PDF页面

import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Font;
import com.itextpdf.text.Image;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.Font.FontFamily;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfGState;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfWriter;

public class Layers {

    /** The resulting PDF. */
    public static final String SOURCE
        = "D:/data/iText/inAction/chapter06/layers_orig.pdf";
    /** The resulting PDF. */
    public static final String RESULT
        = "D:/data/iText/inAction/chapter06/layers.pdf";
    /** The movie poster. */
    public static final String RESOURCE
        = "E:/study/PDF/SourceCodeiText/itext-book/book/resources/img/loa.jpg";
    
    /**
     * Main method.
     * @param args no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
    public static void main(String[] args)
        throws IOException, DocumentException {
        new Layers().createPdf(SOURCE);
        // Create a reader
        PdfReader reader = new PdfReader(SOURCE);
        // step 1
        Document document = new Document(PageSize.A5.rotate());
        // step 2
        PdfWriter writer
            = PdfWriter.getInstance(document, new FileOutputStream(RESULT));
        // step 3
        document.open();
        // step 4
        PdfContentByte canvas = writer.getDirectContent();
        PdfImportedPage page;
        BaseFont bf
            = BaseFont.createFont(BaseFont.ZAPFDINGBATS, "", BaseFont.EMBEDDED);
        for (int i = 0; i < reader.getNumberOfPages(); ) {
            page = writer.getImportedPage(reader, ++i);
            canvas.addTemplate(page, 1f, 0, 0.4f, 0.4f, 72, 50 * i);
            canvas.beginText();
            canvas.setFontAndSize(bf, 20);
            canvas.showTextAligned(Element.ALIGN_CENTER,
                String.valueOf((char)(181 + i)), 496, 150 + 50 * i, 0);
            canvas.endText();
        }
        // step 5
        document.close();
    }

    /**
     * Creates a PDF document.
     * @param filename the path to the new PDF document
     * @throws    DocumentException 
     * @throws    IOException
     */
    public void createPdf(String filename)
        throws IOException, DocumentException {
        // step 1
        Document document = new Document(PageSize.POSTCARD, 30, 30, 30, 30);
        // step 2
        PdfWriter writer = PdfWriter.getInstance(document,
                new FileOutputStream(filename));
        // step 3
        document.open();
        // step 4
        PdfContentByte under = writer.getDirectContentUnder();
        // Page 1: a rectangle
        drawRectangle(under, PageSize.POSTCARD.getWidth(), PageSize.POSTCARD.getHeight());
        under.setRGBColorFill(0xFF, 0xD7, 0x00);
        under.rectangle(5, 5, PageSize.POSTCARD.getWidth() - 10, PageSize.POSTCARD.getHeight() - 10);
        under.fill();
        document.newPage();
        // Page 2: an image
        drawRectangle(under, PageSize.POSTCARD.getWidth(), PageSize.POSTCARD.getHeight());
        Image img = Image.getInstance(RESOURCE);
        img.setAbsolutePosition((PageSize.POSTCARD.getWidth() - img.getScaledWidth()) / 2,
                (PageSize.POSTCARD.getHeight() - img.getScaledHeight()) / 2);
        document.add(img);
        document.newPage();
        // Page 3: the words "Foobar Film Festival"
        drawRectangle(under, PageSize.POSTCARD.getWidth(), PageSize.POSTCARD.getHeight());;
        Paragraph p = new Paragraph("Foobar Film Festival", new Font(FontFamily.HELVETICA, 22));
        p.setAlignment(Element.ALIGN_CENTER);
        document.add(p);
        document.newPage();
        // Page 4: the words "SOLD OUT"
        drawRectangle(under, PageSize.POSTCARD.getWidth(), PageSize.POSTCARD.getHeight());
        PdfContentByte over = writer.getDirectContent();
        over.saveState();
        float sinus = (float)Math.sin(Math.PI / 60);
        float cosinus = (float)Math.cos(Math.PI / 60);
        BaseFont bf = BaseFont.createFont();
        over.beginText();
        over.setTextRenderingMode(PdfContentByte.TEXT_RENDER_MODE_FILL_STROKE);
        over.setLineWidth(1.5f);
        over.setRGBColorStroke(0xFF, 0x00, 0x00);
        over.setRGBColorFill(0xFF, 0xFF, 0xFF);
        over.setFontAndSize(bf, 36);
        over.setTextMatrix(cosinus, sinus, -sinus, cosinus, 50, 324);
        over.showText("SOLD OUT");
        over.setTextMatrix(0, 0);
        over.endText();
        over.restoreState();
        // step 5
        document.close();
    }
    
    /**
     * Draws a rectangle
     * @param content the direct content layer
     * @param width the width of the rectangle
     * @param height the height of the rectangle
     */
    public static void drawRectangle(PdfContentByte content, float width, float height) {
        content.saveState();
        PdfGState state = new PdfGState();
        state.setFillOpacity(0.6f);
        content.setGState(state);
        content.setRGBColorFill(0xFF, 0xFF, 0xFF);
        content.setLineWidth(3);
        content.rectangle(0, 0, width, height);
        content.fillStroke();
        content.restoreState();
    }
}

导入公司信封

从第N页复制页面

6.3 使用PdfStamper添加内容

在绝对位置添加内容

PdfStamper.getOverContent() 类似 getDirectContent()

import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import com.ygsoft.abc.component.cdes.itext.chapter1.HelloWorldLandscape1;
import com.ygsoft.abc.component.cdes.itext.chapter1.HelloWorldLandscape2;


public class StampText {
    /** A resulting PDF file. */
    public static final String RESULT1
        = "D:/data/iText/inAction/chapter06/hello1.pdf";
    /** A resulting PDF file. */
    public static final String RESULT2
        = "D:/data/iText/inAction/chapter06/hello2.pdf";
    /** A resulting PDF file. */
    public static final String RESULT3
        = "D:/data/iText/inAction/chapter06/hello3.pdf";
    
    /**
     * Main method.
     * @param args no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
    public static void main(String[] args)
        throws DocumentException, IOException {
        HelloWorldLandscape1.main(args);
        HelloWorldLandscape2.main(args);
        stamp(HelloWorldLandscape1.RESULT, RESULT1);
        stampIgnoreRotation(HelloWorldLandscape1.RESULT, RESULT2);
        stamp(HelloWorldLandscape2.RESULT, RESULT3);
        
    }

    /**
     * Manipulates a PDF file src with the file dest as result
     * @param src the original PDF
     * @param dest the resulting PDF
     * @throws IOException
     * @throws DocumentException
     */
    public static void stamp(String src, String dest)
        throws IOException, DocumentException {
        PdfReader reader = new PdfReader(src);
        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
        PdfContentByte canvas = stamper.getOverContent(1);
        ColumnText.showTextAligned(canvas,
                Element.ALIGN_LEFT, new Phrase("Hello people!"), 36, 540, 0);
        stamper.close();
    }

    /**
     * Manipulates a PDF file src with the file dest as result
     * @param src the original PDF
     * @param dest the resulting PDF
     * @throws IOException
     * @throws DocumentException
     */
    public static void stampIgnoreRotation(String src, String dest)
        throws IOException, DocumentException {
        PdfReader reader = new PdfReader(src);
        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
        stamper.setRotateContents(false);
        PdfContentByte canvas = stamper.getOverContent(1);
        ColumnText.showTextAligned(canvas,
                Element.ALIGN_LEFT, new Phrase("Hello people!"), 36, 540, 0);
        stamper.close();
    }
}

2步创建PDF

第一步，创建文档内容，第二步，添加页码

import java.io.ByteArrayOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.SQLException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfPTable;
import com.itextpdf.text.pdf.PdfReader;
import com.itextpdf.text.pdf.PdfStamper;
import com.itextpdf.text.pdf.PdfWriter;

public class TwoPasses {

    /** The resulting PDF file. */
    public static final String RESULT
        = "results/part2/chapter06/page_x_of_y.pdf";

    /**
     * Main method.
     * @param    args    no arguments needed
     * @throws DocumentException 
     * @throws IOException 
     * @throws SQLException
     * @throws SQLException
     */
    public static void main(String[] args)
        throws SQLException, DocumentException, IOException {
    	
    	// FIRST PASS, CREATE THE PDF WITHOUT HEADER
    	
        // step 1
        Document document = new Document(PageSize.A4, 36, 36, 54, 36);
        // step 2
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        PdfWriter.getInstance(document, baos);
        // step 3
        document.open();
        // step 4
        // PDF文档创建...
        // step 5
        document.close();

        
        // SECOND PASS, ADD THE HEADER
        
        // Create a reader
        PdfReader reader = new PdfReader(baos.toByteArray());
        // Create a stamper
        PdfStamper stamper
            = new PdfStamper(reader, new FileOutputStream(RESULT));
        // Loop over the pages and add a header to each page
        int n = reader.getNumberOfPages();
        for (int i = 1; i <= n; i++) {
            getHeaderTable(i, n).writeSelectedRows(
                    0, -1, 34, 803, stamper.getOverContent(i));
        }
        // Close the stamper
        stamper.close();
    }
    
    /**
     * Create a header table with page X of Y
     * @param x the page number
     * @param y the total number of pages
     * @return a table that can be used as header
     */
    public static PdfPTable getHeaderTable(int x, int y) {
        PdfPTable table = new PdfPTable(2);
        table.setTotalWidth(527);
        table.setLockedWidth(true);
        table.getDefaultCell().setFixedHeight(20);
        table.getDefaultCell().setBorder(Rectangle.BOTTOM);
        table.addCell("FOOBAR FILMFESTIVAL");
        table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_RIGHT);
        table.addCell(String.format("Page %d of %d", x, y));
        return table;
    }
}

添加公司信封到一个存在的文档

    /**
     * Manipulates a PDF file src with the file dest as result
     * @param src the original PDF
     * @param stationery a PDF that will be added as background
     * @param dest the resulting PDF
     * @throws IOException
     * @throws DocumentException
     */
    public void manipulatePdf(String src, String stationery, String dest)
        throws IOException, DocumentException {
    	// Create readers
        PdfReader reader = new PdfReader(src);
        PdfReader s_reader = new PdfReader(stationery);
        // Create the stamper
        PdfStamper stamper = new PdfStamper(reader, new FileOutputStream(dest));
        // Add the stationery to each page
        PdfImportedPage page = stamper.getImportedPage(s_reader, 1);
        int n = reader.getNumberOfPages();
        PdfContentByte background;
        for (int i = 1; i <= n; i++) {
            background = stamper.getUnderContent(i);
            background.addTemplate(page, 0, 0);
        }
        // CLose the stamper
        stamper.close();
    }

插入页面到一个存在的文档

填充PDF表单

6.4 使用PdfCopy 拷贝页面

拼接和拆分PDF文档

拼接文档

import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.SQLException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Element;
import com.itextpdf.text.Phrase;
import com.itextpdf.text.pdf.ColumnText;
import com.itextpdf.text.pdf.PdfCopy;
import com.itextpdf.text.pdf.PdfImportedPage;
import com.itextpdf.text.pdf.PdfReader;

public class ConcatenateStamp {

    /** The resulting PDF file. */
    public static final String RESULT
        = "results/part2/chapter06/concatenated_stamped.pdf";
    
    /**
     * Main method.
     * @param args no arguments needed
     * @throws DocumentException 
     * @throws IOException
     * @throws SQLException
     */
    public static void main(String[] args)
        throws IOException, DocumentException, SQLException {
    	// use old examples to create PDFs
        MovieLinks1.main(args);
        MovieHistory.main(args);
        // step 1
        Document document = new Document();
        // step 2
        PdfCopy copy = new PdfCopy(document, new FileOutputStream(RESULT));
        // step 3
        document.open();
        // step 4
        // reader for document 1
        PdfReader reader1 = new PdfReader(MovieLinks1.RESULT);
        int n1 = reader1.getNumberOfPages();
        // reader for document 2
        PdfReader reader2 = new PdfReader(MovieHistory.RESULT);
        int n2 = reader2.getNumberOfPages();
        // initializations
        PdfImportedPage page;
        PdfCopy.PageStamp stamp;
        // Loop over the pages of document 1
        for (int i = 0; i < n1; ) {
            page = copy.getImportedPage(reader1, ++i);
            stamp = copy.createPageStamp(page);
            // add page numbers
            ColumnText.showTextAligned(
                    stamp.getUnderContent(), Element.ALIGN_CENTER,
                    new Phrase(String.format("page %d of %d", i, n1 + n2)),
                    297.5f, 28, 0);
            stamp.alterContents();
            copy.addPage(page);
        }
        // Loop over the pages of document 2
        for (int i = 0; i < n2; ) {
            page = copy.getImportedPage(reader2, ++i);
            stamp = copy.createPageStamp(page);
            // add page numbers
            ColumnText.showTextAligned(
                    stamp.getUnderContent(), Element.ALIGN_CENTER,
                    new Phrase(String.format("page %d of %d", n1 + i, n1 + n2)),
                    297.5f, 28, 0);
            stamp.alterContents();
            copy.addPage(page);
        }
        // step 5
        document.close();
    }
}

拆分文档

import java.io.FileOutputStream;
import java.io.IOException;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.pdf.PdfCopy;
import com.itextpdf.text.pdf.PdfReader;

public class Burst {

    /** Format of the resulting PDF files. */
    public static final String RESULT
        = "D:/data/iText/inAction/chapter06/timetable_p%d.pdf";

    /**
     * Main method.
     * @param    args    no arguments needed
     * @throws DocumentException 
     * @throws IOException
     */
    public static void main(String[] args)
        throws IOException, DocumentException {
        // Create a reader
        PdfReader reader = new PdfReader("D:/data/iText/inAction/chapter03/movie_posters.pdf");
        // We'll create as many new PDFs as there are pages
        Document document;
        PdfCopy copy;
        // loop over all the pages in the original PDF
        int n = reader.getNumberOfPages();
        for (int i = 0; i < n; ) {
        	// step 1
            document = new Document();
            // step 2
            copy = new PdfCopy(document,
                new FileOutputStream(String.format(RESULT, ++i)));
            // step 3
            document.open();
            // step 4
            copy.addPage(copy.getImportedPage(reader, i));
            // step 5
            document.close();
        }
    }
    
    
}

PdfCopy VS PdfSmartCopy

PdfSmartCopy 继承自PdfCopy，其会检查每页添加的冗余对象， 因此可以节省大量磁盘空间或

带宽。这种额外的"智慧"是要付出代价的。PdfSmartCopy 需要更多的内存和时间去拼接文档。

文件大小、带宽优先，选PdfSmartCopy

内存、时间优先，选PdfCopy

拼接表单

相关推荐
一个处女座的程序猿4 小时前
LLMs之PDF：zeroX(一款PDF到Markdown 的视觉模型转换工具)的简介、安装和使用方法、案例应用之详细攻略
pdf·markdown·zerox
Dxy12393102164 小时前
python下载pdf
数据库·python·pdf
周亚鑫4 小时前
vue3 pdf base64转成文件流打开
前端·javascript·pdf
一名技术极客6 小时前
Vue2 doc、excel、pdf、ppt、txt、图片以及视频等在线预览
pdf·powerpoint·excel·文件在线预览
S. Dylan20 小时前
Edge浏览器打开PDF无法显示电子签章
edge·pdf
一马平川的大草原20 小时前
如何基于pdf2image实现pdf批量转换为图片
计算机视觉·pdf·文件拆分
m0_5945263020 小时前
Python批量合并多个PDF
java·python·pdf
hairenjing112320 小时前
将图片添加到 PDF 的 5 种方法
pdf
✿ﾟ卡笨卡20 小时前
pdf 添加页眉页脚，获取前五页
java·pdf
blegn20 小时前
PDF编辑工具Adobe Acrobat DC 2023安装教程（附安装包）
pdf·办公软件·office
热门推荐
01【HarmonyOS】HUAWEI DevEco Studio 下载地址汇总02(欧拉)openEuler系统添加网卡文件配置流程、(欧拉)openEuler系统手动配置ipv6地址流程、(欧拉)openEuler系统网络管理说明03组基轨迹建模 GBTM的介绍与实现（Stata 或 R）04【AIGC】重塑未来的科技巨轮05全面解析：构建基于深度学习的安全帽检测系统（UI界面+YOLO代码+数据集）06【经验分享】Ubuntu22.04安装微信(linux官方版)07基于YOLOv10深度学习的CT扫描图像肾结石智能检测系统【python源码+Pyqt5界面+数据集+训练代码】深度学习实战、目标检测08Ubuntu 20.04使用Livox mid 360 测试 FAST_LIO09RAG 实践- Ollama+RagFlow 部署本地知识库10【TC3xx芯片】TC3xx芯片电源管理系统PMS详解