Java HTML直接导出PDF

Java  HTML直接导出PDF

对于java中如何从html中直接导出pdf，有很多的开源代码，这里个人用itext转。

首先需要的包有：core-renderer-1.0.jar

core-renderer-R8pre1.jar

core-renderer.jar

iText-2.0.8.jar

jtidy-4aug2000r7-dev.jar

Tidy.jar

iTextAsian.jar

java代码的话就比较简单了。具体是先用Tidy将html转换为xhtml，将xhtml转换为其它各种格式的。虽然在转化到pdf时也是用的iText。代码如下：

//struts1.x中

else if("Html2Pdf".equalsIgnoreCase(action)){
    exportPdfFile("http://localhost:8080/jsp/test.jsp");
    return null;
}

// 导出pdf add by huangt 2012.6.1
    public File exportPdfFile(String urlStr) throws BaseException {
        // String outputFile = this.fileRoot + "/" +
        // ServiceConstants.DIR_PUBINFO_EXPORT + "/" + getFileName() + ".pdf";
        String outputFile = "d:/test3.pdf";
        OutputStream os;
        try {
            os = new FileOutputStream(outputFile);

            ITextRenderer renderer = new ITextRenderer();

            String str = getHtmlFile(urlStr);
            renderer.setDocumentFromString(str);
            ITextFontResolver fontResolver = renderer.getFontResolver();

            fontResolver.addFont("C:/WINDOWS/Fonts/SimSun.ttc",BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);// 宋体字
            fontResolver.addFont("C:/WINDOWS/Fonts/Arial.ttf",BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);// 宋体字
            renderer.layout();

            renderer.createPDF(os);

            System.out.println("转换成功！");
            os.flush();
            os.close();
            return new File(outputFile);
        } catch (FileNotFoundException e) {
            // logger.error("不存在文件！" + e.getMessage());
            throw new BaseException(e);
        } catch (DocumentException e) {
            // logger.error("生成pdf时出错了！" + e.getMessage());
            throw new BaseException(e);
        } catch (IOException e) {
            // logger.error("pdf出错了！" + e.getMessage());
            throw new BaseException(e);
        }

    }

    // 读取页面内容 add by huangt 2012.6.1
    public String getHtmlFile(String urlStr) throws BaseException {
        URL url;
        try {
            if (urlStr.indexOf("?") != -1) {
                urlStr = urlStr + "&locale="
                        + LocaleContextHolder.getLocale().toString();
            } else {
                urlStr = urlStr + "?locale="
                        + LocaleContextHolder.getLocale().toString();
            }
            url = new URL(urlStr);

            URLConnection uc = url.openConnection();
            InputStream is = uc.getInputStream();

            Tidy tidy = new Tidy();

            OutputStream os2 = new ByteArrayOutputStream();
            tidy.setXHTML(true); // 设定输出为xhtml(还可以输出为xml)
            tidy.setCharEncoding(Configuration.UTF8); // 设定编码以正常转换中文
            tidy.setTidyMark(false); // 不设置它会在输出的文件中给加条meta信息
            tidy.setXmlPi(true); // 让它加上<?xml version="1.0"?>
            tidy.setIndentContent(true); // 缩进，可以省略，只是让格式看起来漂亮一些
            tidy.parse(is, os2);

            is.close();

            // 解决乱码 --将转换后的输出流重新读取改变编码
            String temp;
            StringBuffer sb = new StringBuffer();
            BufferedReader in = new BufferedReader(new InputStreamReader(
                    new ByteArrayInputStream(
                            ((ByteArrayOutputStream) os2).toByteArray()),
                    "utf-8"));
            while ((temp = in.readLine()) != null) {
                sb.append(temp);
            }

            return sb.toString();
        } catch (IOException e) {
            // logger.error("读取客户端网页文本信息时出错了" + e.getMessage());
            throw new BaseException(e);
        }

    }

 

为了解决包的问题，加上Maven <!-- pdf导出 -->

<dependency>
    <groupId>com.lowagie</groupId>
    <artifactId>itext</artifactId>
    <version>2.1.7</version>
</dependency>
<dependency>
    <groupId>org.xhtmlrenderer.flyingsaucer</groupId>
    <artifactId>pdf-renderer</artifactId>
    <version>1.0</version>
</dependency>
<dependency>
    <groupId>jtidy</groupId>
    <artifactId>jtidy</artifactId>
    <version>4aug2000r7-dev</version>
    <type>jar</type>
    <scope>compile</scope>
</dependency>
<dependency>
    <groupId>net.sf.barcode4j</groupId>
    <artifactId>barcode4j-light</artifactId>
    <version>2.0</version>
</dependency>
<dependency>
    <groupId>avalon-framework</groupId>
    <artifactId>avalon-framework-impl</artifactId>
    <version>4.2.0</version>
</dependency>
<!-- pdf -->

 

另外附上 稍微复杂的PDFUtils.java文件，由于没时间就不做整理解释了！见下载附件！