IText 导出PDF 中文问题解决

使用的jar包用maven导入依赖

<!--PDF--><dependency>  <groupId>com.itextpdf</groupId>  <artifactId>itextpdf</artifactId>  <version>5.4.2</version></dependency><dependency>  <groupId>com.itextpdf.tool</groupId>  <artifactId>xmlworker</artifactId>  <version>5.4.1</version></dependency><dependency>  <groupId>com.itextpdf</groupId>  <artifactId>itext-asian</artifactId>  <version>5.2.0</version></dependency><dependency>  <groupId>org.xhtmlrenderer</groupId>  <artifactId>flying-saucer-pdf</artifactId>  <version>9.0.3</version></dependency><!--PDF-->
/**     * 导出为 PDF     *     * @param     * @return     * @throws BusinessException     */    public static String specialExportPDF(String moduleName, String fileName, Map<String, String> dataMap) throws BusinessException {        Configuration configuration = new Configuration();        configuration.setDefaultEncoding("utf-8");        try {            //dataMap 要填入模本的数据文件            //设置模本装置方法和路径,FreeMarker支持多种模板装载方法。可以重servlet，classpath，数据库装载，            //这里我们的模板是放在template包下面            configuration.setDirectoryForTemplateLoading(new File(FileUtil.getWebRootPath() + "template//import//" + moduleName));            Template t = null;            try {                //.ftl为要装载的模板                t = configuration.getTemplate(fileName + ".ftl");            } catch (IOException e) {                e.printStackTrace();            }            fileName = fileName + DateUtil.datetimeToNoSplashString(DateUtil.now()) + ".html";            String outputFilePath = getOutputXlsTempFilePath(fileName);            Writer out = null;            FileOutputStream fos = null;            try {                {                    //输出文档路径及名称                    fos = new FileOutputStream(outputFilePath);                    OutputStreamWriter oWriter = new OutputStreamWriter(fos, "UTF-8");                    //这个地方对流的编码不可或缺，使用main（）单独调用时，应该可以，但是如果是web请求导出时导出后word文档就会打不开，并且包XML文件错误。主要是编码格式不正确，无法解析。                    //out = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(outFile)));                    out = new BufferedWriter(oWriter);                    t.process(dataMap, out);                    String html = readString(outputFilePath);                    //创建pdf                    ItextUtil.createPdf(html,outputFilePath);                    out.flush();                    out.close();                    fos.close();                    //删除html文件                   File file = new File(outputFilePath);                   file.delete();                }            } catch (FileNotFoundException e1) {                e1.printStackTrace();            } catch (TemplateException e1) {                e1.printStackTrace();            }            //4.返回word文件的下载地址            return getDownloadXlsTempFileUrl(fileName.replace("html","pdf"));        } catch (Exception e) {            throw new BusinessException(e.getMessage(), e);        }    }    /**     * 读取文件转换为字符串     * @param FilePath     * @return     */    private static String readString(String FilePath){        if(PubUtil.isEmpty(FilePath))return "";        int len=0;        StringBuffer str=new StringBuffer("");        File file=new File(FilePath);        try {            FileInputStream is=new FileInputStream(file);            BufferedReader in = new BufferedReader(new InputStreamReader(new FileInputStream(file), "UTF-8"));            String line=null;            while( (line=in.readLine())!=null ){                if(len != 0) {// 处理换行符的问题                    str.append("\r\n"+line);                }else{                    str.append(line);                }                len++;            }            in.close();            is.close();        } catch (IOException e) {            e.printStackTrace();        }        return str.toString();    }
/** PDF生成工具 **/
package com.etom.ebihm.utils;import com.itextpdf.text.*;//import com.itextpdf.text.html.simpleparser.HTMLWorker;import com.itextpdf.text.pdf.BaseFont;import com.itextpdf.tool.xml.ElementList;import com.itextpdf.tool.xml.XMLWorker;import com.itextpdf.tool.xml.XMLWorkerHelper;import com.itextpdf.tool.xml.css.CssFile;import com.itextpdf.tool.xml.css.StyleAttrCSSResolver;import com.itextpdf.tool.xml.html.CssAppliers;import com.itextpdf.tool.xml.html.CssAppliersImpl;import com.itextpdf.tool.xml.html.Tags;import com.itextpdf.tool.xml.parser.XMLParser;import com.itextpdf.tool.xml.pipeline.css.CSSResolver;import com.itextpdf.tool.xml.pipeline.css.CssResolverPipeline;import com.itextpdf.tool.xml.pipeline.end.ElementHandlerPipeline;import com.itextpdf.tool.xml.pipeline.html.HtmlPipeline;import com.itextpdf.tool.xml.pipeline.html.HtmlPipelineContext;import com.itextpdf.text.html.simpleparser.StyleSheet;import com.itextpdf.text.pdf.PdfWriter;//import com.lowagie.text.html.simpleparser.HTMLWorker;import org.xhtmlrenderer.pdf.ITextFontResolver;import org.xhtmlrenderer.pdf.ITextRenderer;import java.io.*;import java.util.List;//import java.util.ArrayList;/** * 生成PDF工具类 * Created by Administrator on 2017/8/21. */public class ItextUtil {
//这里的html是将html转化为字符串，非html文件路径    public static void createPdf(String html,String outPath) {        ItextUtil ih = new ItextUtil();        ih.htmlCodeComeFromFile(html,outPath.replace("html","pdf"));    }    public void htmlCodeComeFromFile(String html, String pdfPath) {        Document document = new Document();        try {            /*StyleSheet st = new StyleSheet();            st.loadTagStyle("body", "leading", "16,0");*/            PdfWriter.getInstance(document, new FileOutputStream(pdfPath));            document.open();            Paragraph context = new Paragraph( );            ElementList elementList = parseToElementList(html, null);            // 解决中文问题            BaseFont bfChinese = BaseFont.createFont("STSong-Light", "UniGB-UCS2-H", BaseFont.NOT_EMBEDDED);            Font FontChinese = new Font(bfChinese, 12, Font.NORMAL);            context.setFont(FontChinese);            for (com.itextpdf.text.Element element1 : elementList) {                context.add(element1);            }            document.add(context);            document.close();            System.out.println("文档创建成功");        }catch(Exception e) {            e.printStackTrace();        }    }    public   ElementList parseToElementList(String html, String css) throws IOException {        // CSS        CSSResolver cssResolver = new StyleAttrCSSResolver();        if (css != null) {            CssFile cssFile = XMLWorkerHelper.getCSS(new ByteArrayInputStream(css.getBytes()));            cssResolver.addCss(cssFile);        }        // HTML        MyXMLWorkerHelper.MyFontsProvider fontProvider = new MyXMLWorkerHelper.MyFontsProvider();        CssAppliers cssAppliers = new CssAppliersImpl(fontProvider);        HtmlPipelineContext htmlContext = new HtmlPipelineContext(cssAppliers);        htmlContext.setTagFactory(Tags.getHtmlTagProcessorFactory());        htmlContext.autoBookmark(false);        // Pipelines        ElementList elements = new ElementList();        ElementHandlerPipeline end = new ElementHandlerPipeline(elements, null);        HtmlPipeline htmlPipeline = new HtmlPipeline(htmlContext, end);        CssResolverPipeline cssPipeline = new CssResolverPipeline(cssResolver, htmlPipeline);        // XML Worker        XMLWorker worker = new XMLWorker(cssPipeline, true);        XMLParser p = new XMLParser(worker);        p.parse(new ByteArrayInputStream(html.getBytes()));        return elements;    }}


/**  重写XMLWorkerHelper类，使用自定义字体    **/
package com.etom.ebihm.utils;import com.etom.framework.constant.SystemConstants;import com.etom.framework.utils.FileUtil;import com.itextpdf.text.Font;import com.itextpdf.text.pdf.BaseFont;import com.itextpdf.tool.xml.XMLWorkerFontProvider;import java.io.File;/** * Created by Administrator on 2017/8/21. */public class MyXMLWorkerHelper {    public static class MyFontsProvider extends XMLWorkerFontProvider {        public MyFontsProvider() {            super(null, null);        }        @Override        public Font getFont(final String fontname, String encoding, float size, final int style) {            String fntname = fontname;            if (fntname == null) {                fntname = "宋体";            }            Font font = new Font();            String font_cn = getChineseFont();            BaseFont bf;            try {                bf = BaseFont.createFont(font_cn+",1", //注意这里有一个,1                        BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);                font = new Font(bf,12);                font.setFamily("SYMBOL");            }catch (Exception e){                e.printStackTrace();            }            //return super.getFont(fntname, encoding, size, style);            return font;        }    }    /**     * 获取中文字体位置     * @return     *  @author xxj 2017年4月28日     */    private static String getChineseFont(){        //宋体（对应css中的 属性 font-family: SimSun; /*宋体*/）       /* String font1 ="C:/Windows/Fonts/simsun.ttc";        //判断系统类型，加载字体文件        java.util.Properties prop = System.getProperties();        String osName = prop.getProperty("os.name").toLowerCase();        System.out.println(osName);*/        //File  file = new File(FileUtil.getRealPath(SystemConstants.PATH_PRE_WEBROOT+"://res/font/simsun.ttc"));        /*if (osName.indexOf("linux")>-1) {            font1="/usr/share/fonts/simsun.ttc";        }        if(!new File(font1).exists()){            throw new RuntimeException("字体文件不存在,影响导出pdf中文显示！"+font1);        }*/
//linux服务器中未安装字体，故在项目资源中传了字体，获取项目字体即可        File  file = new File(FileUtil.getRealPath(SystemConstants.PATH_PRE_WEBROOT+"://res/font/simsun.ttc"));        String font1 =FileUtil.getRealPath(SystemConstants.PATH_PRE_WEBROOT+"://res/font/simsun.ttc");        if(!file.exists()){            throw new RuntimeException("字体文件不存在,影响导出pdf中文显示！"+font1);        }        return font1;    }}