java代码实现生成PDF

String phantomjs_path =CfgTool.getWebRootPath() + “phantomjs/”;
String report_path = reportService.getReportPath(task_id);
File phantomjs = new File(phantomjs_path + “phantomjs”);
if (!phantomjs.exists()) {
throw new FileNotExistException().addScene(“FILE”, phantomjs.getPath());
}
StringBuilder cmd = new StringBuilder();
cmd.append(phantomjs_path).append(“phantomjs “)
.append(phantomjs_path).append(“html2pdf.js “)
.append(url).append(” “)
.append(report_path).append(task_id).append(“.pdf”);
if (!Assert.isEmpty(input.getPaper_size())) {
cmd.append(” “).append(input.getPaper_size());
}
logger.debug(“开始导出PDF文件！”);
logger.debug(“CMD:” + cmd);

    //更新任务状态到生成中    indiTaskDaoService.updateTaskStatus(INTASK_STATUS.GENERATE, task_id);    DBSource.get().getSession().commitAndResume();    long start = System.currentTimeMillis();    Runtime rt = Runtime.getRuntime();    Process p = null;    try {        if (!phantomjs.canExecute()) {            p = rt.exec("chmod +x " + phantomjs.getPath());            p.waitFor();        }        logger.debug("CMD_TOSTRING:" + cmd.toString());        p = rt.exec(cmd.toString());        p.waitFor();    } catch (IOException e) {        logger.error(e.toString());        e.printStackTrace();    } catch (InterruptedException e) {        e.printStackTrace();    }    long end = System.currentTimeMillis();    logger.debug("完成导出PDF文件!");    logger.debug("运行耗时：" + (end - start) + "毫秒");