前端使用window.open即可
var url="file/preview.do?path="+response.path+"&fileName="+response.name;
top.window.open(url,response.name,"_blank");接口代碼如下文章來源：http://www.zghlxwxcb.cn/news/detail-562355.html
@RequestMapping(value = "/file/preview.do")
public @ResponseBody String preview(HttpServletRequest request, HttpServletResponse resp, String path, String fileName) throws IllegalStateException, IOException
{
InputStream inputStream = xxxx;//把需要預(yù)覽的文件轉(zhuǎn)成文件流
OutputStream outputStream = resp.getOutputStream();
String fileSuffix = fileName.substring(fileName.lastIndexOf(".") + 1).toLowerCase();
//把doc文檔轉(zhuǎn)pdf
if (fileSuffix.matches("doc|docx"))
{
// spire.doc.free
Document document = new Document();
document.loadFromStream(inputStream);
document.saveToStream(outputStream, FileFormat.PDF);
}
//把excel轉(zhuǎn)pdf
else if (fileSuffix.matches("xls|xlsx"))
{
//spire.xls.free
Workbook workbook = new Workbook();
workbook.loadFromStream(inputStream);
workbook.saveToStream(outputStream, FileFormat.PDF);
}
else
{
if (!fileSuffix.matches("jpg|jpeg|png|gif|bmp|tiff|ai|cdr|eps|pdf"))
{
resp.setContentType("application/octet-stream;charset=UTF-8");
resp.addHeader("Content-Disposition", "attachment;filename=" + fileName);
}
byte[] b = new byte[1024];
int length;
while ((length = inputStream.read(b)) > 0)
{
outputStream.write(b, 0, length);
}
}
outputStream.flush();
outputStream.close();
inputStream.close();
return null;
}如果需要把doc文檔或者excel轉(zhuǎn)為pdf，然后再進行預(yù)覽的話需要引入spire.doc.free或者spire.xls.free的jar文章來源地址http://www.zghlxwxcb.cn/news/detail-562355.html
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