视频（其他）下载+tomcat 配置编码+图片上传限制大小

视频下载：
前台 jsp 

function downVideo(value,row,index){

 return '<a href="<%=basePath%>admin/video/video!fileDown.ds?uname='+row.uname+'&filepath='+value+'">下载</a>';

}

后台java ：

action：

 public void fileDown() {

   FileUtil.download(filepath, getRequest().getParameter("uname")+filepath.substring(filepath.lastIndexOf("."),filepath.length()), getResponse());

  }

FileUtil：

public static void download(String filepath, String filename, HttpServletResponse response) {

        response.setContentType("application/x-download;charset=utf-8");

        OutputStream outp = null;

        FileInputStream in = null;

        try {

            response.addHeader("Content-Disposition", "attachment;filename="+new String(filename.getBytes("gbk"),"ISO-8859-1"));

         

            in = new FileInputStream(ServletActionContext.getServletContext().getRealPath("/")+filepath);

            outp = response.getOutputStream();

        } catch (UnsupportedEncodingException e1) {

            e1.printStackTrace();

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        }

        byte[] b = new byte[1024];

        int i = 0;

        try {

            while ((i = in.read(b, 0, 1024)) != -1) {

                outp.write(b, 0, i);

                outp.flush();

            }

         

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

            if (in != null) {

                try {

                    in.close();

                } catch (IOException e) {

                    e.printStackTrace();

                }

                in = null;

            }

            if (outp != null) {

                outp = null;

            }

        }

    }

tomcat 配置编码为utf-8

在tomcat servlet.xml里面 第69行加上 URIEncoding="UTF-8"

    <Connector port="8080" protocol="HTTP/1.1"   URIEncoding="UTF-8"

               connectionTimeout="20000"

               redirectPort="8443" />

图片上传限制大小

<form id="financialForm" action="<%=basePath%>riskcontrol/website/review_borrow!financialUplaod.ds"  method="post"  enctype="multipart/form-data" onsubmit="return checkusertype()" >

         <input type="hidden" name="usreId" value="<%=_usreId%>" />

         <input type="hidden" name="borrowId" value="<%=_borrowId%>" />

         <input type="file" name="image" multiple="multiple" id="financialImages"/>

         <input type="submit" value="开始上传"/>

    </form>

<script type="text/javascript">



 function checkusertype(){

   var usertype="${login_session_key.userType}";

   if(!(usertype==2||usertype==11)){

    alert("只有财务风控或者 总部客服可以上传复审材料");

    return false;

   }else{

    return submitFile();

   }

 }

 function submitFile(){

   var fileArr = document.getElementById("financialImages").files;

    if(fileArr.length==0){

     alert('请选择上传的图片!');

     return false;

    }

   for( var i=0;i<fileArr.length;i++){

   var imageName=fileArr[i].name;

      var extStart=imageName.lastIndexOf(".");

      var ext=imageName.substring(extStart,imageName.length).toUpperCase();

      if(ext!=".PNG"&&ext!=".JPEG"&&ext!=".JPG"&&ext!=".BMP"){      

             alert("图片限于PNG,JPEG,JPG,BHMP格式");        

             return false;

                }

       var filesize = fileArr[i].size/1024;

       if(parseInt(filesize)>300){

        alert('图片不能大于300KB');

        return false;

       }

     //  $('#financialForm').submit();

   }

  }

</script>