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用java实现html转pdf

    博客分类：
  • JAVA
HTMLJavaOSWindowsXML 
阅读更多 
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;

import org.xhtmlrenderer.pdf.ITextFontResolver;
import org.xhtmlrenderer.pdf.ITextRenderer;

import com.lowagie.text.pdf.BaseFont;

public class TestFlyingSauser
{

    public static void main( String[] args ) throws Exception
    {
//        demo_1();
        demo_2();
    }

    // 不支持中文
    public static void demo_1() throws Exception
    {
        String inputFile = "D:/Test/flying.html";
        String url = new File( inputFile ).toURI().toURL().toString();
        String outputFile = "D:/Test/flying.pdf";
        OutputStream os = new FileOutputStream( outputFile );
        ITextRenderer renderer = new ITextRenderer();
        renderer.setDocument( url );
        renderer.layout();
        renderer.createPDF( os );
        os.close();
    }

    // 支持中文
    public static void demo_2() throws Exception {  
        String outputFile = "G:/demo_3.pdf";  
        OutputStream os = new FileOutputStream(outputFile);  
        ITextRenderer renderer = new ITextRenderer();  
        ITextFontResolver fontResolver = renderer.getFontResolver();  
        fontResolver.addFont("C:/Windows/fonts/simsun.ttc", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);  
        StringBuffer html = new StringBuffer();  
        // DOCTYPE 必需写否则类似于 这样的字符解析会出现错误  
        html.append("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">");  
        html.append("<html xmlns=\"http://www.w3.org/1999/xhtml\">").
             append("<head>")  
            .append("<meta http-equiv=\"Content-Type\" content=\"text/html; charset=UTF-8\" />")
            .append("<style type=\"text/css\" mce_bogus=\"1\">body {font-family: SimSun;}</style>") 
            .append("</head>")  
            .append("<body>");  
        html.append("<div>支持中文！</div>");  
        html.append("</body></html>");  
        renderer.setDocumentFromString(html.toString());  
        // 解决图片的相对路径问题  
        // renderer.getSharedContext().setBaseURL("file:/F:/teste/html/");  
        renderer.layout();  
        renderer.createPDF(os);  
        os.close();  
    }}




import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMSource;
import javax.xml.transform.stream.StreamResult;

import org.w3c.dom.Document;
import org.xhtmlrenderer.pdf.ITextFontResolver;
import org.xhtmlrenderer.pdf.ITextRenderer;

public class HTML2PDF {

/**
  * 调用方式 htmlToPDF(response.getOutputStream(), htmlstr, "C:/WINDOWS/Fonts/simfang.ttf", "FangSong_GB2312", "GB2312", "http://xxxx/dtd/xhtml1-transitional.dtd");
  * 
  * 相关图片必须使用绝对路径才能显示 如果要下载生成的文件，在此方法上方加上：
  * response.setHeader("Content-disposition",
  * "attachment;filename=英文文件名.pdf");
  * 
  * @param 参数
  * @param OutputStream out 输出流
  * @param String htmlcode html代码。
  * 
  * @param String fontName 字体名称 如：FangSong_GB2312
  * @param String fontpath windows 字体路径 如:C:/WINDOWS/Fonts/simfang.ttf
  * @param String encoding 编码 如:GB2312。
  * @param String htmlDTDURL  如：http://xxxx/xhtml1-transitional.dtd
  * version 2009.03.05
  */
public void htmlToPDF(OutputStream out, String htmlcode, String fontpath,
  String
  fontName, String encoding, String htmlDTDURL) throws Exception {
  DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
  ByteArrayOutputStream bos = new ByteArrayOutputStream();
  Transformer transformer = TransformerFactory.newInstance()
    .newTransformer();
  ITextRenderer renderer = new ITextRenderer();
  ITextFontResolver resolver = renderer.getFontResolver();
  InputStream intream = null;
  Document doc = null;
  Document doc2 = null;
  try {
  htmlcode = this.filterHeader(htmlcode,

  encoding, fontName, htmlDTDURL);
  
  intream = new ByteArrayInputStream(htmlcode.getBytes(encoding));
  doc = (Document) builder.parse(intream);
  transformer.setOutputProperty("encoding", encoding);
  new DOMSource(doc);
  transformer.transform(new DOMSource(doc), new StreamResult(bos));
  intream = new ByteArrayInputStream(bos.toString().getBytes());
  doc2 = (Document) builder.parse(intream);
  
  resolver.addFont(fontpath, BaseFont.IDENTITY_H,
    BaseFont.NOT_EMBEDDED);
  
  renderer.setDocument(doc2, null);
  renderer.layout();
  
  renderer.createPDF(out, true);
  
  out.flush();
  out.close();
  } catch (Exception ex) {
  
  throw new Exception(ex.getMessage());
  }
}
/**
  *文件头 
*/
private String filterHeader(String htmlcode, String encoding,String fontName,String htmlDTDURL) {
  htmlcode="<table style=\"font-family:FangSong_GB2312\" width=\"100%\" height=\"100%\" border=\"0\"><tr><td>"+htmlcode+"</td></tr></table>";
  htmlcode="<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\"  \""+htmlDTDURL+"\" >\n"+htmlcode;
  htmlcode = "<?xml version=\"1.0\" encoding=\"" + encoding + "\" ?>\n"
    + htmlcode;
  return htmlcode;
}
}
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| [转]用java流方式判断文件类型
评论
1 楼 xtso520ok 2011-05-10  
很给力
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