最近在做签章的项目，需要将FTL模板文件转换成PDF文件。整体思路是：首先将FTL文件转换成HTML文件，然后再将HTML文件转成PDf文件。下面是代码部分。

import java.io.BufferedWriter;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.io.StringWriter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.xhtmlrenderer.pdf.ITextFontResolver;
import org.xhtmlrenderer.pdf.ITextRenderer;
import com.credithc.base.microservice.scs.test.Contract;
import com.itextpdf.text.pdf.BaseFont;
import freemarker.template.Configuration;
import freemarker.template.Template;

/**
 * @Description:
 * @author : hujingbo
 * @date : 2017-11-3
 */
public class PdfUtils {

	/**
	 * @Title: 		 FTL2PDF
	 * @Description: 将FTL文件转换成PDF的工具类 
	 * @param  		 
	 * @return 		 void  
	 * @throws
	 */
	public static void FTL2PDF(String srcPath, String destPath , Map<String,Object> map) {

		try {
			// 将生成的内容写入html文件中		
			Configuration conf = new Configuration(Configuration.VERSION_2_3_23);
			conf.setDirectoryForTemplateLoading(new File(srcPath));
			conf.setEncoding(Locale.getDefault(), "UTF-8");
			conf.setDateFormat("yyyy-MM-dd HH:mm:ss");
			Template template = conf.getTemplate("123.ftl");
			StringWriter stringWriter = new StringWriter();
			BufferedWriter writer = new BufferedWriter(stringWriter);
			template.process(map, writer);
			String htmlStr = stringWriter.toString();
			System.out.println("转换html成功！");

			// 将生成的内容写入html转换成pdf
			DocumentBuilder builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
			Document doc = builder.parse(new ByteArrayInputStream(htmlStr.getBytes("UTF-8")));
			ITextRenderer renderer = new ITextRenderer();
			// 解决中文支持问题
			ITextFontResolver fontResolver = renderer.getFontResolver();

			// 设置pdf中文字体为宋体
			if (isOsWindow()) {
				fontResolver.addFont("C:/Windows/Fonts/SimSun.ttf",BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
			} else {
				fontResolver.addFont("/usr/share/fonts/ttc/SimSun.ttf",BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED);
			}
			renderer.setDocument(doc, null);
			renderer.layout();
			OutputStream out = new FileOutputStream(new File(destPath));
			renderer.createPDF(out);

			System.out.println("转换pdf成功！");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	/**
	 * @Title: 		 isOsWindow
	 * @Description: 获取系统类型 
	 * @param  		 
	 * @return 		 boolean  
	 * @throws
	 */
	private static boolean isOsWindow() {
		String osName = System.getProperties().getProperty("os.name");
		if(osName.toLowerCase().indexOf("win")!=-1){
			return true;
		}
		return false;
	}
	
	public static void main(String[] args) {
		
		String srcPath = "D:/test/bbb/";
		String destPath = "D:/test/bbb/456.pdf";
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("number", "1565615178");
		map.put("years", "2017");
		map.put("month", "11");
		map.put("day", "05");
		FTL2PDF(srcPath, destPath, map);
	
	}
}

链接: https://pan.baidu.com/s/1dEURl1v 密码: sa55