我正在使用带有以下代码的 PDFBox：
doc = new PDDocument();
page = new PDPage();
doc.addPage(page);
PDFont font = PDType1Font.COURIER;
pdftitle = new PDPageContentStream(doc, page);
pdftitle.beginText();
pdftitle.setFont( font, 12 );
pdftitle.moveTextPositionByAmount( 40, 740 );
pdftitle.drawString("Here I insert a lot of text");
pdftitle.endText();
pdftitle.close();
有谁知道我如何包装文本以使其自动转到另一行？
这对我有用。WordUtils 和 split 的组合
String[] wrT = null;
String s = null;
text = "Job Description: Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque hendrerit lectus nec ipsum gravida placerat. Fusce eu erat orci. Nunc eget augue neque. Fusce arcu risus, pulvinar eu blandit ac, congue non tellus. Sed eu neque vitae dui placerat ultricies vel vitae mi. Vivamus vulputate nullam.";
wrT = WordUtils.wrap(text, 100).split("\\r?\\n");
for (int i=0; i< wrT.length; i++) {
contents.beginText();
contents.setFont(PDType1Font.HELVETICA, 10);
contents.newLineAtOffset(50,600-i*15);
s = wrT[i];
contents.showText(s);
contents.endText();
}
我认为不可能自动换行。但是您可以自己包装文本。请参阅如何使用 PDFBox drawString 插入换行和如何使用 PDFbox 创建固定宽度的段落？.
PdfBox 和 Boxable 都自动换行比单元格宽度长的文本部分，这意味着如果单元格宽度 = 80 句子宽度 = 100 宽度为 20 的文本的剩余部分将从下一行开始（注意：我已经提到宽度（句子消耗的实际空间）而不是长度（字符数））
如果句子宽度 = 60，则需要宽度为 20 的文本来填充单元格的宽度，之后的任何文本都将转到下一行解决方案：用空格填充此宽度 20
单元格的未填充空间 = cellWidth - sentenceWidth, numberOfSpaces = 单元格的未填充空间/单个空间的宽度
private String autoWrappedHeaderText(String text, float cellWidth) {
List<String> splitStrings = Arrays.asList(text.split("\n"));
String wholeString = "";
for (String sentence : splitStrings) {
float sentenceWidth = FontUtils.getStringWidth(headerCellTemplate.getFont(), " " + sentence + " ",
headerCellTemplate.getFontSize());
if (sentenceWidth < cellWidth) {
float spaceWidth = FontUtils.getStringWidth(headerCellTemplate.getFont(), " ",
headerCellTemplate.getFontSize());
int numberOfSpacesReq = (int) ((cellWidth - sentenceWidth) / spaceWidth);
wholeString += sentence;
for (int counter = 0; counter < numberOfSpacesReq; counter++) {
wholeString += " ";
}
}
}
return wholeString;
}
cell = headerRow.createCell(cellWidth * 100 / table.getWidth(), headerText, HorizontalAlignment.LEFT, VerticalAlignment.TOP);
我在 pdfBOX 中找到了换行问题的解决方案
通常，您需要三个步骤来换行文本：
1）将每个单词拆分为必须包装的字符串并将它们放入字符串数组中，例如 String [] 部分
2) 使用 (textlength/(一行中的字符数)) 创建一个字符串缓冲区数组，例如 280/70=5 >> 我们需要 5 个换行符！
3) 将部分放入stringbuffer[i]，直到允许一行中的最大字符数限制，
4) 循环直到 stringbuffer.length < linebreaks
splitString方法是执行此操作的方法。writeText方法只是将包装的文本绘制到 pdf
这是一个例子
import java.io.IOException;
import java.util.ArrayList;
import org.apache.pdfbox.exceptions.COSVisitorException;
import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.edit.PDPageContentStream;
import org.apache.pdfbox.pdmodel.font.PDFont;
import org.apache.pdfbox.pdmodel.font.PDType1Font;
public class pdfTest{
private ArrayList<String> arrayList;
private PDDocument document;
private PDFont font = PDType1Font.HELVETICA;
pdfTest(PDDocument document, ArrayList arrayList, PDFont font) throws COSVisitorException, IOException {
this.document = document;
this.arrayList = arrayList;
this.font = font;
writeText(document, arrayList, 30, 750, font); //method for easily drawing a text into a pdf
} //constructor
public void writeText(PDDocument document, ArrayList arrayList, int positionX, int positionY, PDFont font) throws IOException, COSVisitorException {
PDPage page = new PDPage();
document.addPage( page );
// Start a new content stream
PDPageContentStream contentStream = new PDPageContentStream(document, page);
// Define a text content stream using the selected font, moving the cursor and drawing the text in arrayList
for(int i=0;i<arrayList.size();i++) {
String text=(String) arrayList.get(i);
String [] tmpText = splitString(text);
for( int k=0;k<tmpText.length;k++) {
contentStream.beginText();
contentStream.setFont(font, 12);
contentStream.moveTextPositionByAmount(positionX, positionY);
contentStream.drawString(tmpText[k]);
contentStream.endText();
positionY=positionY-20;
}
contentStream.setLineWidth((float) 0.25);
}
// Make sure that the content stream is closed:
contentStream.close();
document.save( "Test.pdf");
document.close();
} //main
public static void main(String[] args) throws COSVisitorException, IOException {
ArrayList arrayList = new ArrayList<String>();
PDDocument document = new PDDocument();
PDFont font = PDType1Font.HELVETICA;
PDPage page = new PDPage();
arrayList.add( "12345 56789 0 aaa bbbew wel kwäer kweork merkweporkm roer wer wer e er"
+ "df sdmfkl slkdfm sdkfdof sopdkfp osdkfo sädölf söldm,f sdkfpoekr re, ä"
+ " sdfk msdlkfmsdlk fsdlkfnsdlk fnlkdn flksdnfkl sdnlkfn kln df sdmfn sn END");
arrayList.add("this is an example");
arrayList.add("java pdfbox stackoverflow");
new pdfTest(document,arrayList,font);
System.out.println("pdf created!");
}
public String [] splitString(String text) {
/* pdfBox doesnt support linebreaks. Therefore, following steps are requierd to automatically put linebreaks in the pdf
* 1) split each word in string that has to be linefeded and put them into an array of string, e.g. String [] parts
* 2) create an array of stringbuffer with (textlength/(number of characters in a line)), e.g. 280/70=5 >> we need 5 linebreaks!
* 3) put the parts into the stringbuffer[i], until the limit of maximum number of characters in a line is allowed,
* 4) loop until stringbuffer.length < linebreaks
*
*/
int linebreaks=text.length()/80; //how many linebreaks do I need?
String [] newText = new String[linebreaks+1];
String tmpText = text;
String [] parts = tmpText.split(" "); //save each word into an array-element
//split each word in String into a an array of String text.
StringBuffer [] stringBuffer = new StringBuffer[linebreaks+1]; //StringBuffer is necessary because of manipulating text
int i=0; //initialize counter
int totalTextLength=0;
for(int k=0; k<linebreaks+1;k++) {
stringBuffer[k] = new StringBuffer();
while(true) {
if (i>=parts.length) break; //avoid NullPointerException
totalTextLength=totalTextLength+parts[i].length(); //count each word in String
if (totalTextLength>80) break; //put each word in a stringbuffer until string length is >80
stringBuffer[k].append(parts[i]);
stringBuffer[k].append(" ");
i++;
}
//reset counter, save linebreaked text into the array, finally convert it to a string
totalTextLength=0;
newText[k] = stringBuffer[k].toString();
}
return newText;
}
}