html转pdf的java实现

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();
}}

Java代码

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;
}
}