CODEWITHSUNDEEP
javaspringitextpdf-generationasianfonts
Daniel B
Daniel B

Reputation: 137

iText - chinese character aren't shown

I have the following problem have a database with utf8 encoding and chinese characters. i get that data into a string and then pass it to the cells of the library, all fine except that when i use chinese characters they aren't shown, I tried this:

public String testEncoding(String str) {
    String result = "";
    for(char ch : str.toCharArray())
        result +=  "\\u" + Integer.toHexString(ch | 0x10000).substring(1);        
    return result;
}

and also use notosans and arial uni fonts, that converts the strings to unicode and when i print it shows me the unicode in the pdf \u6b98\u528d, not the chinese characters but when i paste that into a string

String text = "\u6b98\u528d";

and pass it to the cell of the pharagraph it shows fine! Here's the code i use for that: 

final String PATH_FONT_ARIALUNI = "src/main/resources/fonts/NotoSansCJKsc-Regular.otf";        

     // FOR Chinese
     BaseFont baseFont = null;
    try {
        baseFont = BaseFont.createFont(PATH_FONT_ARIALUNI, BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
    } catch (DocumentException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
     Font font = new Font(baseFont, 6.8f);

     Font fontNormal = new Font(FontFamily.HELVETICA, 10, Font.NORMAL, BaseColor.RED);



     char[] aa = title.toCharArray();
     boolean isLastChineseChar = false;


     for (int j = 0; j < title.length(); j++) {

         if((Character.UnicodeBlock.of(aa[j]) == Character.UnicodeBlock.CJK_UNIFIED_IDEOGRAPHS)){


             isLastChineseChar = true;
             /*System.out.println("Is CHINESE: " + aa[j]);*/
         } 
     }

     Phrase phrase = null;

     if(isLastChineseChar){

         phrase = new Phrase(title, font);
//also passing testEncoding(title) but as i say it shows unicode in the printed pdf

         PdfPCell cell = new PdfPCell(phrase);
         cell.setVerticalAlignment(Element.ALIGN_CENTER);

         if (align == 2) {
             cell.setHorizontalAlignment(Element.ALIGN_CENTER);
         }
         return cell;

     } else {
         phrase = new Phrase(title, fontNormal);

         PdfPCell cell = new PdfPCell(phrase);
         cell.setVerticalAlignment(Element.ALIGN_CENTER);
         if (align == 2) {
             cell.setHorizontalAlignment(Element.ALIGN_CENTER);
         }
         return cell;

     }

Any ideas? what i'm doing wrong? I see lots of examples here but there are reading text files and passing the unicode strings directly not like my sample.

Upvotes: 0

Views: 1435

Answers (1)

Daniel B
Daniel B

Reputation: 137

My code already works fine, in you have any problem in your production servers that characters aren't showing the solution is the following:

in you class add this 

 @Value("classpath:fonts/NotoSansCJKsc-Regular.otf")
private Resource res;

and the you import like this:

        baseFont = BaseFont.createFont(res.getURI().getPath(), BaseFont.IDENTITY_H, BaseFont.EMBEDDED);

and all will be working fine!

Resource is an Spring Framework class that do this job for you

Upvotes: 2

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