PDF表单域是指用户在PDF文件中可以自主进行填写、选择等操作的区域，其主要目的是采集用户输入或选择的数据。常见的表单域包括文本框、单选按钮、复选框、列表框和组合框等。文本将介绍如何使用 Free Spire.PDF for Java在Java程序中创建PDF表单域。
Jar包导入
方法一： 下载Free Spire.PDF for Java包并解压缩，然后将lib文件夹下的Spire.Pdf.jar包作为依赖项导入到Java应用程序中
方法二： 直接通过Maven仓库安装JAR包，配置pom.xml文件的代码如下：
<repositories> <repository> <id>com.e-iceblue</id> <url>http://repo.e-iceblue.cn/repository/maven-public/</url> </repository> </repositories> <dependencies> <dependency> <groupId>e-iceblue</groupId> <artifactId>spire.pdf.free</artifactId> <version>2.6.3</version> </dependency> </dependencies>
J ava 代码
import java.awt.*; import java.awt.geom.Point2D; import java.awt.geom.Rectangle2D; import com.spire.pdf.PdfDocument; import com.spire.pdf.PdfPageBase; import com.spire.pdf.fields.*; import com.spire.pdf.graphics.*; public class AddFormFieldsToPdf { public static void main(String[] args) throws Exception { //创建PdfDocument对象 PdfDocument doc = new PdfDocument(); //添加页面 PdfPageBase page = doc.getPages().add(); //初始化位置变量 float baseX = 100; float baseY = 0; //创建画刷对象 PdfSolidBrush brush1 = new PdfSolidBrush(new PdfRGBColor(Color.BLUE)); PdfSolidBrush brush2 = new PdfSolidBrush(new PdfRGBColor(Color.black)); //创建TrueType字体 PdfTrueTypeFont font= new PdfTrueTypeFont(new Font("微软雅黑",Font.PLAIN,12),true); //添加文本框 String text = "文本框:"; //文本框前的文字 page.getCanvas().drawString(text, font, brush1, new Point2D.Float(0, baseY)); //在PDF中绘制文字 Rectangle2D.Float tbxBounds = new Rectangle2D.Float(baseX, baseY , 150, 15); //创建Rectangle2D对象 PdfTextBoxField textBox = new PdfTextBoxField(page, "TextBox"); //创建文本框对象textBox.setBounds(tbxBounds); //设置文本框的Bounds,包括位置和大小信息 textBox.setText("你好"); //设置文本框的默认文字 textBox.setFont(font); //设置文本框的字体 doc.getForm().getFields().add(textBox); //添加文本框到PDF域的集合 baseY +=25; //添加复选框 page.getCanvas().drawString("复选框:", font, brush1, new Point2D.Float(0, baseY)); java.awt.geom.Rectangle2D.Float rec1 = new java.awt.geom.Rectangle2D.Float(baseX, baseY, 15, 15); PdfCheckBoxField checkBoxField = new PdfCheckBoxField(page, "CheckBox1"); checkBoxField.setBounds(rec1); checkBoxField.setChecked(false); page.getCanvas().drawString("选项1", font, brush2, new Point2D.Float(baseX + 20, baseY)); java.awt.geom.Rectangle2D.Float rec2 = new java.awt.geom.Rectangle2D.Float(baseX + 70, baseY, 15, 15); PdfCheckBoxField checkBoxField1 = new PdfCheckBoxField(page, "CheckBox2"); checkBoxField1.setBounds(rec2); checkBoxField1.setChecked(false); page.getCanvas().drawString("选项2", font, brush2, new Point2D.Float(baseX+90, baseY)); doc.getForm().getFields().add(checkBoxField); baseY += 25; //添加列表框 page.getCanvas().drawString("列表框:", font, brush1, new Point2D.Float(0, baseY)); java.awt.geom.Rectangle2D.Float rec = new java.awt.geom.Rectangle2D.Float(baseX, baseY, 150, 50); PdfListBoxField listBoxField = new PdfListBoxField(page, "ListBox"); listBoxField.getItems().add(new PdfListFieldItem("项目1", "item1")); listBoxField.getItems().add(new PdfListFieldItem("项目2", "item2")); listBoxField.getItems().add(new PdfListFieldItem("项目3", "item3"));; listBoxField.setBounds(rec); listBoxField.setFont(font); listBoxField.setSelectedIndex(0); doc.getForm().getFields().add(listBoxField); baseY += 60; //添加单选按钮 page.getCanvas().drawString("单选按钮:", font, brush1, new Point2D.Float(0, baseY)); PdfRadioButtonListField radioButtonListField = new PdfRadioButtonListField(page, "Radio"); PdfRadioButtonListItem radioItem1 = new PdfRadioButtonListItem("Item1"); radioItem1.setBounds(new Rectangle2D.Float(baseX, baseY, 15, 15)); page.getCanvas().drawString("选项1", font, brush2, new Point2D.Float(baseX + 20, baseY)); PdfRadioButtonListItem radioItem2 = new PdfRadioButtonListItem("Item2"); radioItem2.setBounds(new Rectangle2D.Float(baseX + 70, baseY, 15, 15)); page.getCanvas().drawString("选项2", font, brush2, new Point2D.Float(baseX + 90, baseY)); radioButtonListField.getItems().add(radioItem1);radioButtonListField.getItems().add(radioItem2); radioButtonListField.setSelectedIndex(0); doc.getForm().getFields().add(radioButtonListField); baseY += 25; //添加组合框 page.getCanvas().drawString("组合框:", font, brush1, new Point2D.Float(0, baseY)); Rectangle2D.Float cmbBounds = new Rectangle2D.Float(baseX, baseY, 150, 15); PdfComboBoxField comboBoxField = new PdfComboBoxField(page, "ComboBox"); comboBoxField.setBounds(cmbBounds); comboBoxField.getItems().add(new PdfListFieldItem("项目1", "item1")); comboBoxField.getItems().add(new PdfListFieldItem("项目2", "itme2")); comboBoxField.getItems().add(new PdfListFieldItem("项目3", "item3")); comboBoxField.getItems().add(new PdfListFieldItem("项目4", "item4")); comboBoxField.setSelectedIndex(0); comboBoxField.setFont(font); doc.getForm().getFields().add(comboBoxField); baseY += 25; //添加签名域 page.getCanvas().drawString("签名域:", font, brush1, new Point2D.Float(0, baseY)); PdfSignatureField sgnField= new PdfSignatureField(page,"sgnField"); Rectangle2D.Float sgnBounds = new Rectangle2D.Float(baseX, baseY, 150, 80); sgnField.setBounds(sgnBounds); doc.getForm().getFields().add(sgnField); baseY += 90; //添加按钮 page.getCanvas().drawString("提交按钮:", font, brush1, new Point2D.Float(0, baseY)); Rectangle2D.Float btnBounds = new Rectangle2D.Float(baseX, baseY, 50, 15); PdfButtonField buttonField = new PdfButtonField(page, "Button"); buttonField.setBounds(btnBounds);buttonField.setText("提交"); buttonField.setFont(font); doc.getForm().getFields().add(buttonField); //保存文档 doc.saveToFile("AddFormField.pdf"); } }
原文链接：https://www.cnblogs.com/jazz-z/p/13439332.html
