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>