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asp网站优缺点,在线识别图片,网页设计作品集模板,做网站的框架组合本章的例子，请参考我翻译的博文：itext7学习笔记——第4章,里面有详细的解释,有什么不懂得也可以评论或者私信我！ 例子1：文本注释 在一个Paragraph之前添加最简单的文本注释，代码如下： /*** Created by ASU…

    本章的例子，请参考我翻译的博文：itext7学习笔记——第4章,里面有详细的解释,有什么不懂得也可以评论或者私信我！

例子1：文本注释

    在一个Paragraph之前添加最简单的文本注释，代码如下：

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.kernel.color.Color;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfString;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.annot.PdfAnnotation;
import com.itextpdf.kernel.pdf.annot.PdfTextAnnotation;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Paragraph;import java.io.File;
import java.io.IOException;/*** Simple text annotation example.*/
public class C04E01_01_TextAnnotation {public static final String DEST = "results/chapter04/text_annotation.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E01_01_TextAnnotation().createPdf(DEST);}public void createPdf(String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));//Initialize documentDocument document = new Document(pdf);document.add(new Paragraph("The example of text annotation."));//Create text annotationPdfAnnotation ann = new PdfTextAnnotation(new Rectangle(20, 800, 0, 0)).setColor(Color.GREEN).setTitle(new PdfString("iText")).setContents("With iText, you can truly take your documentation needs to the next level.").setOpen(true);pdf.getFirstPage().addAnnotation(ann);//Close documentdocument.close();}
}

例子2：链接注释

    在”here”上面添加链接注释，并创建链接到itext官网，代码如下：

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.action.PdfAction;
import com.itextpdf.kernel.pdf.annot.PdfLinkAnnotation;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Link;
import com.itextpdf.layout.element.Paragraph;import java.io.File;
import java.io.IOException;/*** Simple link annotation example.*/
public class C04E01_02_LinkAnnotation {public static final String DEST = "results/chapter04/link_annotation.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E01_02_LinkAnnotation().createPdf(DEST);}public void createPdf(String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));//Initialize documentDocument document = new Document(pdf);//Create link annotationPdfLinkAnnotation annotation = new PdfLinkAnnotation(new Rectangle(0, 0)).setAction(PdfAction.createURI("http://itextpdf.com/"));Link link = new Link("here", annotation);Paragraph p = new Paragraph("The example of link annotation. Click ").add(link.setUnderline()).add(" to learn more...");document.add(p);//Close documentdocument.close();}
}

例子3：线注释

    在一个pdf文档里面添加线注释，代码如下：

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.kernel.color.Color;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.*;
import com.itextpdf.kernel.pdf.annot.PdfAnnotation;
import com.itextpdf.kernel.pdf.annot.PdfLineAnnotation;import java.io.File;
import java.io.IOException;/*** Simple line annotation example.*/
public class C04E01_03_LineAnnotation {public static final String DEST = "results/chapter04/line_annotation.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E01_03_LineAnnotation().createPdf(DEST);}public void createPdf(String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));PdfPage page = pdf.addNewPage();PdfArray lineEndings = new PdfArray();lineEndings.add(new PdfName("Diamond"));lineEndings.add(new PdfName("Diamond"));//Create line annotation with inside captionPdfAnnotation annotation = new PdfLineAnnotation(new Rectangle(0, 0),new float[]{20, 790, page.getPageSize().getWidth() - 20, 790}).setLineEndingStyles((lineEndings)).setContentsAsCaption(true).setTitle(new PdfString("iText")).setContents("The example of line annotation").setColor(Color.BLUE);page.addAnnotation(annotation);//Close documentpdf.close();}
}

例子4：标记注释

    在pdf里面创建标记注释，代码如下

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.kernel.color.Color;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.PdfArray;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfString;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.annot.PdfAnnotation;
import com.itextpdf.kernel.pdf.annot.PdfTextMarkupAnnotation;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.property.TextAlignment;
import com.itextpdf.layout.property.VerticalAlignment;import java.io.File;
import java.io.IOException;/*** Simple text markup annotation example.*/
public class C04E01_04_TextMarkupAnnotation {public static final String DEST = "results/chapter04/textmarkup_annotation.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E01_04_TextMarkupAnnotation().createPdf(DEST);}public void createPdf(String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));//Initialize documentDocument document = new Document(pdf);Paragraph p = new Paragraph("The example of text markup annotation.");document.showTextAligned(p, 20, 795, 1, TextAlignment.LEFT,VerticalAlignment.MIDDLE, 0);//Create text markup annotationPdfAnnotation ann = PdfTextMarkupAnnotation.createHighLight(new Rectangle(105, 790, 64, 10),new float[]{169, 790, 105, 790, 169, 800, 105, 800}).setColor(Color.YELLOW).setTitle(new PdfString("Hello!")).setContents(new PdfString("I'm a popup.")).setTitle(new PdfString("iText")).setOpen(true).setRectangle(new PdfArray(new float[]{100, 600, 200, 100}));pdf.getFirstPage().addAnnotation(ann);//Close documentdocument.close();}
}

例子5：创建表单

    在pdf里面创建工作信息表单，代码如下：

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfButtonFormField;
import com.itextpdf.forms.fields.PdfChoiceFormField;
import com.itextpdf.forms.fields.PdfFormField;
import com.itextpdf.forms.fields.PdfTextFormField;
import com.itextpdf.kernel.geom.PageSize;
import com.itextpdf.kernel.geom.Rectangle;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.kernel.pdf.action.PdfAction;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Paragraph;
import com.itextpdf.layout.property.TextAlignment;import java.io.File;
import java.io.IOException;/*** Simple widget annotation example.*/
public class C04E02_JobApplication {public static final String DEST = "results/chapter04/job_application.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E02_JobApplication().createPdf(DEST);}public void createPdf(String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));PageSize ps = PageSize.A4;pdf.setDefaultPageSize(ps);// Initialize documentDocument document = new Document(pdf);C04E02_JobApplication.addAcroForm(document);//Close documentdocument.close();}public static PdfAcroForm addAcroForm(Document doc) {Paragraph title = new Paragraph("Application for employment").setTextAlignment(TextAlignment.CENTER).setFontSize(16);doc.add(title);doc.add(new Paragraph("Full name:").setFontSize(12));doc.add(new Paragraph("Native language:      English         French       German        Russian        Spanish").setFontSize(12));doc.add(new Paragraph("Experience in:       cooking        driving           software development").setFontSize(12));doc.add(new Paragraph("Preferred working shift:").setFontSize(12));doc.add(new Paragraph("Additional information:").setFontSize(12));//Add acroformPdfAcroForm form = PdfAcroForm.getAcroForm(doc.getPdfDocument(), true);//Create text fieldPdfTextFormField nameField = PdfTextFormField.createText(doc.getPdfDocument(),new Rectangle(99, 753, 425, 15), "name", "");form.addField(nameField);//Create radio buttonsPdfButtonFormField group = PdfFormField.createRadioGroup(doc.getPdfDocument(), "language", "");PdfFormField.createRadioButton(doc.getPdfDocument(), new Rectangle(130, 728, 15, 15), group, "English");PdfFormField.createRadioButton(doc.getPdfDocument(), new Rectangle(200, 728, 15, 15), group, "French");PdfFormField.createRadioButton(doc.getPdfDocument(), new Rectangle(260, 728, 15, 15), group, "German");PdfFormField.createRadioButton(doc.getPdfDocument(), new Rectangle(330, 728, 15, 15), group, "Russian");PdfFormField.createRadioButton(doc.getPdfDocument(), new Rectangle(400, 728, 15, 15), group, "Spanish");form.addField(group);//Create checkboxesfor (int i = 0; i < 3; i++) {PdfButtonFormField checkField = PdfFormField.createCheckBox(doc.getPdfDocument(), new Rectangle(119 + i * 69, 701, 15, 15),"experience".concat(String.valueOf(i+1)), "Off", PdfFormField.TYPE_CHECK);form.addField(checkField);}//Create comboboxString[] options = {"Any", "6.30 am - 2.30 pm", "1.30 pm - 9.30 pm"};PdfChoiceFormField choiceField = PdfFormField.createComboBox(doc.getPdfDocument(), new Rectangle(163, 676, 115, 15),"shift", "Any", options);form.addField(choiceField);//Create multiline text fieldPdfTextFormField infoField = PdfTextFormField.createMultilineText(doc.getPdfDocument(),new Rectangle(158, 625, 366, 40), "info", "");form.addField(infoField);//Create push button fieldPdfButtonFormField button = PdfFormField.createPushButton(doc.getPdfDocument(),new Rectangle(479, 594, 45, 15), "reset", "RESET");button.setAction(PdfAction.createResetForm(new String[] {"name", "language", "experience1", "experience2", "experience3", "shift", "info"}, 0));form.addField(button);return form;}
}

例子6：填充表单

    创建完表单以后，填充表单内容，代码如下：

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormField;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.layout.Document;import java.io.File;
import java.io.IOException;
import java.util.Map;/*** Simple filling out form example.*/
public class C04E03_CreateAndFill {public static final String DEST = "results/chapter04/create_and_fill.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E03_CreateAndFill().createPdf(DEST);}public void createPdf(String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfWriter(dest));// Initialize documentDocument doc = new Document(pdf);PdfAcroForm form = C04E02_JobApplication.addAcroForm(doc);Map<String, PdfFormField> fields = form.getFormFields();fields.get("name").setValue("James Bond");fields.get("language").setValue("English");fields.get("experience1").setValue("Off");fields.get("experience2").setValue("Yes");fields.get("experience3").setValue("Yes");fields.get("shift").setValue("Any");fields.get("info").setValue("I was 38 years old when I became an MI6 agent.");doc.close();}
}

例子7：预填充表单

    打开已存在的pdf，预填充表单内容，代码如下：

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormField;import java.io.*;
import java.util.Map;/*** Simple filling out form example.*/
public class C04E04_FillForm {public static final String SRC = "src/main/resources/pdf/job_application.pdf";public static final String DEST = "results/chapter04/fill_form.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E04_FillForm().manipulatePdf(SRC, DEST);}public void manipulatePdf(String src, String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfReader(src), new PdfWriter(dest));PdfAcroForm form = PdfAcroForm.getAcroForm(pdf, true);Map<String, PdfFormField> fields = form.getFormFields();fields.get("name").setValue("James Bond");fields.get("language").setValue("English");fields.get("experience1").setValue("Off");fields.get("experience2").setValue("Yes");fields.get("experience3").setValue("Yes");fields.get("shift").setValue("Any");fields.get("info").setValue("I was 38 years old when I became an MI6 agent.");pdf.close();}
}

例子8：锁定表单

    打开已存在的pdf，锁定表单填充的内容，使之不能被编辑，代码如下：

/*** Created by ASUS on 2017/9/12.*/
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfReader;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.forms.PdfAcroForm;
import com.itextpdf.forms.fields.PdfFormField;import java.io.*;
import java.util.Map;/*** Simple filling out form example.*/
public class C04E05_FlattenForm {public static final String SRC = "src/main/resources/pdf/job_application.pdf";public static final String DEST = "results/chapter04/flatten_form.pdf";public static void main(String args[]) throws IOException {File file = new File(DEST);file.getParentFile().mkdirs();new C04E05_FlattenForm().manipulatePdf(SRC, DEST);}public void manipulatePdf(String src, String dest) throws IOException {//Initialize PDF documentPdfDocument pdf = new PdfDocument(new PdfReader(src), new PdfWriter(dest));PdfAcroForm form = PdfAcroForm.getAcroForm(pdf, true);Map<String, PdfFormField> fields = form.getFormFields();fields.get("name").setValue("James Bond");fields.get("language").setValue("English");fields.get("experience1").setValue("Off");fields.get("experience2").setValue("Yes");fields.get("experience3").setValue("Yes");fields.get("shift").setValue("Any");fields.get("info").setValue("I was 38 years old when I became an MI6 agent.");form.flattenFields();pdf.close();}
}

Example代码下载

    本章代码可在如下地址下载（IDEA工程）：iText7——第四章源代码工程

http://www.jmfq.cn/news/5134303.html

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