<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> </head> <body class="b1 b2"> <p class="p1"> <span class="s1">个人信息授权书本人（姓名：${realName}</span> </p> </body> </html>
比如有如上所以一个html文件，需要转成同样格式的pdf文件，同时替换 realName成真实姓名。java项目resources根目录下有个templates文件夹，test.html在templates目录下。
Configuration起到缓存Template作用，不用每次生成Template时都需要重新生成，
import freemarker.template.Configuration
import freemarker.template.Template
import org.apache.commons.io.FileUtils
import org.apache.commons.io.IOUtils
public class CrdQueryProvider{
private static Configuration cfg
static{
//从jar templates目录加载html freemarker模版
cfg = new Configuration()
cfg.setClassForTemplateLoading(CrdQueryProvider.class, "/templates")
cfg.setDefaultEncoding("UTF-8");
}
public static void htmlToPdf(){
Map instContractModel = new HashMap(){{put("realName": "张三")}}
//加载模版 cfg缓存
Template template = cfg.getTemplate("test.html")
//模版格式化后的输出
String output = loadFtlHtml( template, instContractModel)
FileOutputStream outputStream = new FileOutputStream("/data/test.pdf", false)
savePdf(outputStream, output)
}
public static void savePdf(OutputStream out, String html) {
Document document = new Document(PageSize.A4, 50, 50, 60, 0);//marginBottom : 60
try {
PdfWriter writer = PdfWriter.getInstance(document, out);
Charset charset = Charset.forName("UTF-8");
document.open();
XMLWorkerHelper.getInstance().parseXHtml(writer, document, new ByteArrayInputStream(html.getBytes("UTF-8")),charset, new PdfFont());
} catch (Exception e) {
logger.warn(String.format("savaPDF failure ex: %s",e.getMessage()), e);
throw new RuntimeException(e);
} finally {
document.close();
}
}
public static String loadFtlHtml( Template template, InstContractModel model){
if(template == null || model ==null) {
logger.warn("loadFtlHtml异常,参数不对");
}
StringWriter stringWriter = null;
try {
stringWriter = new StringWriter();
template.process(model, stringWriter);
return stringWriter.toString();
} catch (Exception e) {
logger.error("process异常",e);
} finally {
if (null != stringWriter) {
try {
stringWriter.close();
} catch (IOException e) {
logger.error("close异常",e);
}
}
}
return null;
}
}
StringWriter存放输出字符串。