java采用aspose将Excel转为PDF

package com.demo;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import com.aspose.cells.License;
import com.aspose.cells.SaveFormat;
import com.aspose.cells.Workbook;

/**
 * 由于ASPOSE比较吃内存，操作大一点的文件就会堆溢出，所以请先设置好java虚拟机参数：-Xms512m -Xmx512m(参考值)<br>
 */
public class Excel2PdfUtil {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		excel2Pdf("D://report.xls", "D://report.pdf");
	}

	/**
	 * 获取license
	 * 
	 * @return
	 */
	private static boolean getLicense() {
		boolean result = false;
		try {
			InputStream license = Excel2PdfUtil.class.getClassLoader().getResourceAsStream("\\license.xml");// license路径
			License aposeLic = new License();
			aposeLic.setLicense(license);
			result = true;
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}

	public static void excel2Pdf(String excelPath, String pdfPath) {
		long old = Sys