在struts action中如何得到pagecontext?

你既然选择struts框架就不要用smartupload组件了。代码大概是这样的：
import java.util.*;
import org.apache.struts.upload.FormFile;
  //大字段上传
  public void blobUpload(DBAccess dba,FormFile file) throws ObjectException{
    try{
      InputStream stream = file.getInputStream();
      ResultSet rs=null;      if(file.getFileSize()>0){                         //有内容
        byte[] bytes=file.getFileData();
        dba.prepareStatement(SQL_INSERT_BLOB_UPLOAD);
        if(strInsertReturnValue!=null){
          dba.setString(1,strInsertReturnValue);
          rs=dba.executeQuery();
          if(rs.next()){                                //有返回结果
            oracle.sql.BLOB blob=((oracle.jdbc.OracleResultSet)rs).getBLOB("M_FILE");
            OutputStream outStream = blob.getBinaryOutputStream();
            outStream.write(bytes);                     //写入大字段
            outStream.flush();
          }
        }else{
          throw new ObjectException("上传大字段时没有取得m_id的值!");
        }
      }
    }catch(Exception ex){
      ex.printStackTrace();
      throw new ObjectException(ex.getMessage());
    }
  }  //大字段 下载
  public void blobDownload(DBAccess dba,String m_id,HttpServletResponse response) throws ObjectException{
    try{
      dba.prepareStatement(SQL_PROCESS_BLOB_DOWNLOAD);
      dba.clearParameters();
      dba.setString(1,m_id);
      ResultSet rs=dba.executeQuery();      if(rs.next()){
        InputStream inStream=rs.getBinaryStream("M_FILE");
        String fileType=rs.getString("M_FILETYPE");
        response.setContentType(fileType);
        byte[] b=new  byte[1024];
        int  len;
        while((len=inStream.read(b))>0){
          response.getOutputStream().write(b,0,len);
        }
        response.getOutputStream().flush();
        response.getOutputStream().close();
      }
    }catch(Exception ex){
      ex.printStackTrace();
      throw new ObjectException("大字段 下载时出错");
    }
  }