转 Html转pdf的工具——wkhtmltopdf

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Rectangle;

import com.itextpdf.text.pdf.*;

import java.io.*;

import java.security.MessageDigest;

import java.security.SignatureException;

import java.security.cert.CertificateParsingException;

import java.security.cert.X509Certificate;

import java.util.Calendar;

import java.util.HashMap;

/**

 * Created by zhangzhenhua on 2016/11/1.

 */

public class PDFSigner {

    //tsa

    private SignerKeystore signerKeystore;

    private TSAClient tsaClient;

    private PDFSigner(){}

    /**

     *

     * @param tsa_url   tsa服务器地址

     * @param tsa_accnt tsa账户号

     * @param tsa_passw tsa密码

     * @param cert_path 证书路径

     * @param cert_passw    证书密码

     */

    public PDFSigner(String tsa_url,String tsa_accnt,String tsa_passw,String cert_path,String cert_passw)  {

        tsaClient = new TSAClientBouncyCastle(tsa_url, tsa_accnt, tsa_passw);

        try {

            signerKeystore =  new SignerKeystorePKCS12(new FileInputStream(cert_path), cert_passw);

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    /**

     * TSA时间戳签名

     * @param infilePath    未签名的文件路径

     * @param outfilePath   签名后的文件路径

     * @throws Exception

     */

    public void signPDF(String infilePath,String outfilePath) throws Exception {

        PdfReader reader = new PdfReader(infilePath);

        FileOutputStream fout = new FileOutputStream(outfilePath);

        PdfStamper stp = PdfStamper.createSignature(reader, fout, '\0');

        PdfSignatureAppearance sap = stp.getSignatureAppearance();

        sap.setCrypto(null,  this.signerKeystore.getChain(), null, PdfSignatureAppearance.SELF_SIGNED);

        sap.setVisibleSignature(new Rectangle(100, 100, 300, 200), 1, "Signature");

        PdfSignature dic = new PdfSignature(PdfName.ADOBE_PPKLITE, new PdfName("adbe.pkcs7.detached"));

        dic.setReason(sap.getReason());

        dic.setLocation(sap.getLocation());

        dic.setContact(sap.getContact());

        dic.setDate(new PdfDate(sap.getSignDate()));

        sap.setCryptoDictionary(dic);

        int contentEstimated = 15000;

        HashMap exc = new HashMap();

        exc.put(PdfName.CONTENTS, new Integer(contentEstimated * 2 + 2));

        sap.preClose(exc);

        PdfPKCS7 sgn = new PdfPKCS7(this.signerKeystore.getPrivateKey(),  this.signerKeystore.getChain(), null, "SHA1", null, false);

        InputStream data = sap.getRangeStream();

        MessageDigest messageDigest = MessageDigest.getInstance("SHA1");

        byte buf[] = new byte[8192];

        int n;

        while ((n = data.read(buf)) > 0) {

            messageDigest.update(buf, 0, n);

        }

        byte hash[] = messageDigest.digest();

        Calendar cal = Calendar.getInstance();

        byte[] ocsp = null;

        if ( this.signerKeystore.getChain().length >= 2) {

            String url = PdfPKCS7.getOCSPURL((X509Certificate) this.signerKeystore.getChain()[0]);

            if (url != null && url.length() > 0)

                ocsp = new OcspClientBouncyCastle((X509Certificate) this.signerKeystore.getChain()[0], (X509Certificate) this.signerKeystore.getChain()[1], url).getEncoded();

        }

        byte sh[] = sgn.getAuthenticatedAttributeBytes(hash, cal, ocsp);

        sgn.update(sh, 0, sh.length);

        byte[] encodedSig = sgn.getEncodedPKCS7(hash, cal, this.tsaClient, ocsp);

        if (contentEstimated + 2 < encodedSig.length)

            throw new Exception("Not enough space");

        byte[] paddedSig = new byte[contentEstimated];

        System.arraycopy(encodedSig, 0, paddedSig, 0, encodedSig.length);

        PdfDictionary dic2 = new PdfDictionary();

        dic2.put(PdfName.CONTENTS, new PdfString(paddedSig).setHexWriting(true));

        sap.close(dic2);

    }

    public static void main(String[] args) {

        //test

        String TSA_URL    = "http://tsa.safelayer.com:8093";

        String TSA_ACCNT  = "";

        String TSA_PASSW  = "";

        String IN_FILE = "E:\\项目\\paperless\\lipsum.pdf";

        String OUT_FILE = "E:\\项目\\paperless\\test_signed.pdf";

        String CERT_PATH  = "E:\\项目\\paperless\\bfnsh.pfx";

        String CERT_PASSW = "123456";

        PDFSigner signer = new PDFSigner(TSA_URL,TSA_ACCNT,TSA_PASSW,CERT_PATH,CERT_PASSW);

        try {

            signer.signPDF(IN_FILE,OUT_FILE);

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

}

import java.security.PrivateKey;

import java.security.Provider;

import java.security.cert.Certificate;

/**

 * Created by zhangzhenhua on 2016/10/28.

 */

public interface SignerKeystore {

    public PrivateKey getPrivateKey() ;

    public Certificate[] getChain() ;

    public Provider getProvider();

}

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/**

 * Created by hmt on 2016/10/28.

 */

import java.io.InputStream;

import java.security.KeyStore;

import java.security.PrivateKey;

import java.security.Provider;

import java.security.Security;

import java.security.cert.Certificate;

/**

 * SignerKeystore implementation using PKCS#12 file (.pfx etc)

 */

public class SignerKeystorePKCS12 implements SignerKeystore {

    private static Provider prov = null;

    private KeyStore ks;

    private String alias;

    private String pwd;

    private PrivateKey key;

    private Certificate[] chain;

    public SignerKeystorePKCS12(InputStream inp, String passw) throws Exception {

        // This should be done once only for the provider...

        if (prov == null) {

            prov = new org.bouncycastle.jce.provider.BouncyCastleProvider();

            Security.addProvider(prov);

        }

        this.ks = KeyStore.getInstance("pkcs12", prov);

        this.pwd = passw;

        this.ks.load(inp, pwd.toCharArray());

        this.alias = (String)ks.aliases().nextElement();

        this.key   = (PrivateKey)ks.getKey(alias, pwd.toCharArray());

        this.chain = ks.getCertificateChain(alias);

    }

    public PrivateKey getPrivateKey() {

        return key;

    }

    public Certificate[] getChain() {

        return chain;

    }

    public Provider getProvider() {

        return ks.getProvider();

    }

}

import com.itextpdf.text.BadElementException;

import com.itextpdf.text.DocumentException;

import com.itextpdf.text.Image;

import com.itextpdf.text.Rectangle;

import com.itextpdf.text.pdf.PdfContentByte;

import com.itextpdf.text.pdf.PdfReader;

import com.itextpdf.text.pdf.PdfStamper;

import javax.imageio.ImageIO;

import java.awt.image.BufferedImage;

import java.io.*;

/**

 * 盖骑缝章

 * Created by zhangzhenhua on 2016/11/2.

 */

public class PDFStamperCheckMark {

    /**

     * 切割图片

     * @param imgPath  原始图片路径

     * @param n 切割份数

     * @return  itextPdf的Image[]

     * @throws IOException

     * @throws BadElementException

     */

    public static Image[] subImages(String imgPath,int n) throws IOException, BadElementException {

        Image[] nImage = new Image[n];

        ByteArrayOutputStream out = new ByteArrayOutputStream();

        BufferedImage img = ImageIO.read(new File(imgPath));

        int h = img.getHeight();

        int w = img.getWidth();

        int sw = w/n;

        for(int i=0;i<n;i++){

            BufferedImage subImg;

            if(i==n-1){//最后剩余部分

                 subImg = img.getSubimage(i * sw, 0, w-i*sw, h);

            }else {//前n-1块均匀切

                 subImg = img.getSubimage(i * sw, 0, sw, h);

            }

            ImageIO.write(subImg,imgPath.substring(imgPath.lastIndexOf('.')+1),out);

            nImage[i] = Image.getInstance(out.toByteArray());

            out.flush();

            out.reset();

        }

        return nImage;

    }

    /**

     *  盖骑缝章

     *

     * @param infilePath    原PDF路径

     * @param outFilePath    输出PDF路径

     * @param picPath    章图片路径

     * @throws IOException

     * @throws DocumentException

     */

    public static void stamperCheckMarkPDF(String infilePath,String outFilePath,String picPath) throws IOException, DocumentException {

        PdfReader reader = new PdfReader(infilePath);//选择需要印章的pdf

        PdfStamper stamp = new PdfStamper(reader, new FileOutputStream(outFilePath));//加完印章后的pdf

        Rectangle pageSize = reader.getPageSize(1);//获得第一页

        float height = pageSize.getHeight();

        float width  = pageSize.getWidth();

        int nums = reader.getNumberOfPages();

        Image[] nImage =  subImages(picPath,nums);//生成骑缝章切割图片

        for(int n=1;n<=nums;n++){

            PdfContentByte over = stamp.getOverContent(n);//设置在第几页打印印章

            Image img = nImage[n-1];//选择图片

//            img.setAlignment(1);

//            img.scaleAbsolute(200,200);//控制图片大小

            img.setAbsolutePosition(width-img.getWidth(),height/2-img.getHeight()/2);//控制图片位置

            over.addImage(img);

        }

        stamp.close();

    }

    public static void main(String[] args) throws IOException, DocumentException {

        String infilePath = "E:\\项目\\paperless\\page.pdf";

        String outfilePaht = "E:\\项目\\paperless\\page_pic.pdf";

        String picPath = "E:\\项目\\paperless\\公章.png";

        stamperCheckMarkPDF(infilePath,outfilePaht,picPath);

    }

}