BolbString2Pdf

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以下は、Blob2Stringで取得したテキストファイルをＰＤＦ化にする処理です。

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import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class Convert2Pdf {
    public static void main(String[] args) {
        final File sqlPdfFile = new File(args[0]);

        if (!sqlPdfFile.isFile()) {
            System.out.printf("ファイルがありません：%s%n", args[0]);
            System.exit(-1);
        }

        if (sqlPdfFile.length() > 0 ) {
            convert2Pdf_fmfcm(sqlPdfFile);
        }
        else {
            System.out.printf("0 Bytesファイル：%s%n", args[0]);
            System.exit(-1);
        }
    }

    static String getFileBaseName(String fileName) {
        String baseName = "";

        int i = fileName.lastIndexOf('.');
        if (i > 0) {
            baseName = fileName.substring(0, i);
        }

        return baseName;
    }

    static String getFileExtName(String fileName) {
        String extension = "";

        int i = fileName.lastIndexOf('.');
        if (i > 0) {
            extension = fileName.substring(i + 1);
        }

        return extension;
    }

    static final String __header__pdf__ = "25504446";
    static final String __header_fmfcm_ = "46434D00";

    static String getFileHeader(File sqlTextFile) {
        String ret = "";

        BufferedReader br = null;
        try {
            br = new BufferedReader(new FileReader(sqlTextFile));
            String line = br.readLine();

            if (line != null) {
                if (line.substring(0, __header__pdf__.length()).equals(__header__pdf__)) 
                    ret = "pdf";
                else if (line.substring(0, __header_fmfcm_.length()).equals(__header_fmfcm_))
                    ret = "fmfcm";
            }

        } catch (FileNotFoundException e) {
        } catch (IOException e) {
        } finally {
            if (br != null) {
                try {
                    br.close();
                } catch (IOException e) {
                }
            }
        }

        return ret;
    }

    static void convert2Pdf_fmfcm(File sqlTextFile) {
        BufferedReader br = null;
        BufferedOutputStream wr = null;

        String path = sqlTextFile.getParent();
        String name = sqlTextFile.getName();

        if (path == null) path = ".";

        String fileExtName = getFileHeader(sqlTextFile);
        String newFileName = String.format("%s/%s.%s", path, getFileBaseName(name), fileExtName);

        try {
            File pdfFile = new File(newFileName);
            System.out.printf("Convert to: %s%n", pdfFile.getCanonicalFile().getAbsolutePath());

            wr = new BufferedOutputStream(new FileOutputStream(pdfFile));

            br = new BufferedReader(new FileReader(sqlTextFile));
            String line = "";
            while ((line = br.readLine()) != null) {
                byte[] bs = str2hex(line);
//              System.out.println(int2hex(bs));
                wr.write(bs);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (wr != null) {
                    wr.close();
                }
            } catch (IOException e) {
            }
        }
    }

    static byte[] str2hex(String strInt) {
        String safeStr = strInt;

        if (strInt.length() % 2 == 1) {
            StringBuffer w = new StringBuffer();

            w.append(strInt.substring(0, strInt.length()-1));

            w.append("0");
            w.append(strInt.substring(strInt.length()-1));

            safeStr = w.toString();
        }

        List<Byte> w = new ArrayList<Byte>();

        int i = 0;
        do {
            String s = safeStr.substring(i, i + 2);

            Integer n = 0;
            try {
                n = Integer.parseInt(s, 16);
            } catch(NumberFormatException e) {}

            byte b = (byte) (0x000000ff & (n));

            w.add( b );

            i += 2;
        } while(i <  strInt.length());

        Byte[] oa = w.toArray(new Byte[w.size()]);
        byte[] bs = new byte[oa.length];

        for(int k = 0; k < oa.length; k ++){
            bs[k] = oa[k];
        }

        return bs;
    }

    static String int2hex(int i) {
        String s = Integer.toHexString(i & 0xff);
        return (s.length() == 1) ? ("0" + s) : s;
    }

    static String int2hex(byte[] data) {
        StringBuffer buf = new StringBuffer();
        int c = 0;
        for (byte b : data) {
            buf.append(int2hex(b));
            c++;
            buf.append((c == 8) ? " -" : " ");
            buf.append((c >=16) ? "\n" : " ");
            c = (c >= 16) ? 0 : c;
        }
        return buf.toString();
    }

}