Apache POI PPT - 格式化文本

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演示文稿中的文本可以使用XSLFTextRun类的方法进行格式化。为此，您必须通过选择幻灯片布局之一来创建XSLFTextRun类对象，如下所示 -

//create the empty presentation 
XMLSlideShow ppt = new XMLSlideShow();

//getting the slide master object
XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0);

//select a layout from specified list
XSLFSlideLayout slidelayout = slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);

//creating a slide with title and content layout
XSLFSlide slide = ppt.createSlide(slidelayout);

//selection of title place holder
XSLFTextShape body = slide.getPlaceholder(1);

//clear the existing text in the slide
body.clearText();

//adding new paragraph
XSLFTextParagraph paragraph = body.addNewTextParagraph();

//creating text run object
XSLFTextRun run = paragraph.addNewTextRun();

您可以使用setFontSize()设置演示文稿中文本的字体大小。

run.setFontColor(java.awt.Color.red);
run.setFontSize(24);

以下代码片段展示了如何对演示文稿中的文本应用不同的格式样式（粗体、斜体、下划线、删除线）。

//change the text into bold format
run.setBold(true);

//change the text it to italic format
run.setItalic(true)

// strike through the text
run.setStrikethrough(true);

//underline the text
run.setUnderlined(true);

要在段落之间添加换行符，请使用XSLFTextParagraph类的addLineBreak()，如下所示 -

paragraph.addLineBreak();

下面给出的是使用上述所有方法格式化文本的完整程序 -

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

import org.apache.poi.xslf.usermodel.SlideLayout;
import org.apache.poi.xslf.usermodel.XMLSlideShow;
import org.apache.poi.xslf.usermodel.XSLFSlide;
import org.apache.poi.xslf.usermodel.XSLFSlideLayout;
import org.apache.poi.xslf.usermodel.XSLFSlideMaster;
import org.apache.poi.xslf.usermodel.XSLFTextParagraph;
import org.apache.poi.xslf.usermodel.XSLFTextRun;
import org.apache.poi.xslf.usermodel.XSLFTextShape;

public class TextFormating {
   public static void main(String args[]) throws IOException {
      //creating an empty presentation
      XMLSlideShow ppt = new XMLSlideShow();
      
      //getting the slide master object
      XSLFSlideMaster slideMaster = ppt.getSlideMasters().get(0);
      
      //select a layout from specified list
      XSLFSlideLayout slidelayout = slideMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
      
      //creating a slide with title and content layout
      XSLFSlide slide = ppt.createSlide(slidelayout);
      
      //selection of title place holder
      XSLFTextShape body = slide.getPlaceholder(1);
      
      //clear the existing text in the slide
      body.clearText();
      
      //adding new paragraph
      XSLFTextParagraph paragraph = body.addNewTextParagraph();
      
      //formatting line 1
      
      XSLFTextRun run1 = paragraph.addNewTextRun();
      run1.setText("This is a colored line");      
      
      //setting color to the text
      run1.setFontColor(java.awt.Color.red);      
      
      //setting font size to the text
      run1.setFontSize(24.0);      
      
      //moving to the next line
      paragraph.addLineBreak();
     
      //formatting line 2
      
      XSLFTextRun run2 = paragraph.addNewTextRun();
      run2.setText("This is a bold line");
      run2.setFontColor(java.awt.Color.CYAN);
      
      //making the text bold
      run2.setBold(true);
      paragraph.addLineBreak();
      
      //formatting line 3
      
      XSLFTextRun run3 = paragraph.addNewTextRun();
      run3.setText(" This is a striked line");
      run3.setFontSize(12.0);
      
      //making the text italic
      run3.setItalic(true);
      
      //strike through the text
      run3.setStrikethrough(true);
      paragraph.addLineBreak();
       
      //formatting line 4
      
      XSLFTextRun run4 = paragraph.addNewTextRun();
      run4.setText(" This an underlined line");
      run4.setUnderlined(true);
      
      //underlining the text
      paragraph.addLineBreak();
      
      //creating a file object
      File file = new File(“TextFormat.pptx”);
      FileOutputStream out = new FileOutputStream(file);
       
      //saving the changes to a file
      ppt.write(out);
      out.close();	 
   }
}

将上述代码保存为TextFormating.java，然后从命令提示符编译并执行它，如下所示 -

$javac TextFormating.java
$java TextFormating

它将编译并执行以生成以下输出 -

Formatting completed successfully 

带有格式化文本的幻灯片如下所示 -