Apache POI PPT - 文本格式化

简述

演示文稿中的文本可以使用 XSLFTextRun 类的方法进行格式化。为此，您必须通过选择一种幻灯片布局来创建一个 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);

以下代码片段显示了如何将不同的格式样式（粗体、斜体、下划线、删除线）应用于演示文稿中的文本。



//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);

要在段落之间换行，请使用 XSLFTextParagraph 类的 addLineBreak() ，如下所示 -



paragraph.addLineBreak();

下面给出了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();    

   }

}

将上述代码另存为TextFormating.java，然后在命令提示符下编译并执行如下：



$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 -