Java模板动态生成word文件的方法步骤

public static void exportDoc() {

        String picturePath = "D:/image.png" ;

        Map<String, Object> dataMap = new HashMap<String, Object>();

        dataMap.put( "brand" , "海尔" );

        dataMap.put( "store_name" , "海尔天津" );

        dataMap.put( "user_name" , "小明" );

        //经过编码后的图片路径

        String image = getWatermarkImage(picturePath);

        dataMap.put( "image" , image);

        //Configuration用于读取ftl文件

        Configuration configuration = new Configuration( new Version( "2.3.0" ));

        configuration.setDefaultEncoding( "utf-8" );

        Writer out = null ;

        try {

            //输出文档路径及名称

            File outFile = new File( "D:/导出优惠证明.doc" );

            out = new BufferedWriter( new OutputStreamWriter( new

            FileOutputStream( new File( "outFile" )), "utf-8" ), 10240 );

        } catch (UnsupportedEncodingException e) {

            e.printStackTrace();

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        }

        // 加载文档模板

        Template template = null ;

        try {

            //指定路径，例如C:/a.ftl 注意：此处指定ftl文件所在目录的路径，而不是ftl文件的路径

            configuration.setDirectoryForTemplateLoading( new File( "C:/" ));

            //以utf-8的编码格式读取文件

            template = configuration.getTemplate( "导出优惠证明.ftl" , "utf-8" );

        } catch (IOException e) {

            e.printStackTrace();

            throw new RuntimeException( "文件模板加载失败！" , e);

        }

        // 填充数据

        try {

            template.process(dataMap, out);

        } catch (TemplateException e) {

            e.printStackTrace();

            throw new RuntimeException( "模板数据填充异常！" , e);

        } catch (IOException e) {

            e.printStackTrace();

            throw new RuntimeException( "模板数据填充异常！" , e);

        } finally {

            if ( null != out) {

                try {

                    out.close();

                } catch (IOException e) {

                    e.printStackTrace();

                    throw new RuntimeException( "文件输出流关闭异常！" , e);

                }

            }

        }

    }

/***

  * 处理图片

  * @param watermarkPath 图片路径  D:/image.png

  * @return

  */

private String getWatermarkImage(String watermarkPath) {

     InputStream in = null ;

     byte [] data = null ;

     try {

         in = new FileInputStream(watermarkPath);

         data = new byte [in.available()];

         in.read(data);

         in.close();

     } catch (Exception e) {

         e.printStackTrace();

     }

     BASE64Encoder encoder = new BASE64Encoder();

     return encoder.encode(data);

}