利用jspsmart上传文件

1.upFile.jsp在页面提交form代码参照一下内容
<script language="javascript">
function SaveItem(type){
      var str = document.all.ON_SEQ.value;
      var dd=str.indexOf(".")
      var type = document.all.ON_SEQ.value.substring(dd+1, str.length);
      if(type == "xls"){
         document.forms('clientForm').action="upFileSave.jsp?type=" + type;
         document.forms('clientForm').submit();
          return;
      } else{
          return alert("请选择上传excel文件！");
      }
    }
</script>

<form name="clientForm" method="POST" action="upFileSave.jsp" id="clientForm" enctype="multipart/form-data">
  <input type="file" name="file">
  <a href="javascript:SaveItem(0)>上传 </a>
</form>

2.upFileSave.jsp,直接读取文件流，不在服务器保留上传文件

   try {
     //实例化上载bean
    com.jspsmart.upload.SmartUpload mySmartUpload = new   com.jspsmart.upload.SmartUpload();
    //初始化
     mySmartUpload.initialize(pageContext);
    //设置上载的最大值
     mySmartUpload.setMaxFileSize(5 * 1024 * 1024);
    //设置上传文件类型
    //mySmartUpload.setAllowedFilesList("xls");
    //上载文件
     mySmartUpload.upload();

    String ordernoid = StringAssistant.getStringClear(mySmartUpload.getRequest().getParameter("type"));

    com.jspsmart.upload.File lo_File = mySmartUpload.getFiles().getFile(0);

    byte[] fileContent = new byte[(int) lo_File.getSize()];
    for (int k = 0; k < (int) lo_File.getSize(); k++) {
      fileContent[k] = lo_File.getBinaryData(k);
    }
    InputStream fs = null;
    if (!lo_File.isMissing()) {
      fs = new ByteArrayInputStream(fileContent);

      //数据库相关操作.... 
      //手动提交
        conn.setAutoCommit(false);
        sql = "insert into contsub_upload_file(id,FILE_NAME,FILE_CONTENT) values (?,?,?,)";
        pre = null;
        pre = conn.prepareStatement(sql);
        long id =SequenceMaker.getSequence("id", "contsub_upload_file_seq");
        pre.setLong(1, id);
        pre.setString(2,lo_File.getFileName());
        pre.setBlob(3, oracle.sql.BLOB.empty_lob());
        pre.executeUpdate();
        pre = null;
        rs = null;
        pre  =  conn.prepareStatement("SELECT FILE_CONTENT FROM contsub_upload_file WHERE id = " + id + " for update");
        rs   =   pre.executeQuery();
        if (rs.next())
        {
          oracle.sql.BLOB   fc   =   (oracle.sql.BLOB) rs.getBlob("FILE_CONTENT");
          java.io.OutputStream   binOut   =   fc.getBinaryOutputStream();
          java.io.BufferedOutputStream   out1   =   new   java.io.BufferedOutputStream(binOut);
          java.io.BufferedInputStream   in   =   new java.io.BufferedInputStream(fs);
          int   c;
          while   ((c   =   in.read())   !=   -1)
          {
            out1.write(c);
          }
          in.close();
          out1.close();
        }
        rs.close();
        pre.close();
    }

   } catch (Exception er) {
    System.out.println(er);
}