pdf在线预览功能_JAVA_编程开发_程序员俱乐部

class="java" name="code">public void preview() {
		
		String spath = ServletActionContext.getServletContext().getRealPath("")
				+ "\\contentfile\\";
		specificate = (Specificate) baseService.getById(Specificate.class, id);
		String fileName = specificate.getTitle();
		String fileNameWithPath = spath + "\\" + specificate.getTitle();
		log.info("文件名=" + fileName);
		// File file = new File(fileName);

		try {
			// 转码（UTF-8-->GB2312），现在环境下的编码是UTF-8，但服务器操作系统的编码是GB2312
			if (fileName != null && fileName.trim().length() > 0) {
				fileName = URLEncoder.encode(fileName, "GB2312");
				fileName = URLDecoder.decode(fileName, "ISO8859-1");
			} else {
				fileName = "moren.pdf";
				fileNameWithPath = spath + "\\" + fileName;
			}
			File file = new File(fileNameWithPath);
			FileInputStream fileinputstream = new FileInputStream(file);
			long l = file.length();
			int k = 0;
			byte abyte0[] = new byte[65000];
			getResponse().setContentType("application/pdf");
			getResponse().setContentLength((int) l);
			getResponse().setHeader("Content-Disposition",
					"inline; filename=" + fileName);
			while ((long) k < l) {
				int j;
				j = fileinputstream.read(abyte0, 0, 65000);
				k += j;
				getResponse().getOutputStream().write(abyte0, 0, j);
			}
			fileinputstream.close();
		} catch (IOException e) {
			log.error("打开失败,文件路径为：" + fileNameWithPath, e);
			e.printStackTrace();
			// return this.ajaxText("打开失败");
		}
		// return "";
	}

<input type="button" id="<s:property value='spId'/>"														class="btn btn-success" value="预览"	onclick="viewPDF(this)" />

<script type="text/javascript">
	
	function viewPDF(cur){   
       // alert($(cur).attr('id'));
      var   fileid = $(cur).attr('id');
     var strURL = "preview.action?id="+fileid;  
     var sheight = screen.height-70;  
    var swidth = screen.width-10;  
    var winoption="left=0,top=0,height="+sheight+",width="+swidth+",toolbar=yes,menubar=yes, location=yes,status=yes,scrollbars=yes,resizable=yes";  
    var tmp=window.open(strURL,'',winoption);  
}  
    
    </script>