泛微附件相关代码段

以下代展示了如何通过weaver.file.ImageFileManager读取泛附件文件信息和文件流.
如保通过DocViewPermission查询用户是否有相关权限
如何用ws…Respons,ResponseBuilder 返回文件流.

import java.io.IOException;
import java.io.InputStream;
import java.net.URLEncoder;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.ServletException;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.ResponseBuilder;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.api.doc.detail.service.permission;

import weaver.conn.RecordSet;
import weaver.file.ImageFileManager;
import weaver.general.BaseBean;

import weaver.hrm.User;

public class DownloadFileWithTokenService extends BaseBean{
	Log logger = LogFactory.getLog(DownloadFileWithTokenService.class);
	
	/**
	 * 
	 * @param imagefileid
	 * @param user
	 * @return
	 * @throws ServletException
	 * @throws IOException
	 */
	public Response doload(int imagefileid, User user) throws ServletException, IOException {
		Response response=null;
        RecordSet rs = new RecordSet();
        rs.executeQuery("select docid from DocImageFile where imagefileid=?", new Object[]{imagefileid});
        int docId = 0;
        if (rs.next()) {
            docId = rs.getInt("docid");
        }
        /***
         * 简单权限判断 这个是需在OA系统中设置 内容引擎-目录设置-文档目录-权限管理-默认共享。
         */
        DocViewPermission permission = new DocViewPermission();
        Map<String,Boolean> permissionItems = new HashMap<String, Boolean>(); ;
        if (docId > 0) {
            permissionItems = permission.getShareLevel(docId, user, false);
        } else {
        	permissionItems.put(permission.READ, true);
        	permissionItems.put(permission.DOWNLOAD, false);
        }        
        boolean var9 = (Boolean)permissionItems.get(permission.READ);
        if (var9) {
            ImageFileManager var10 = new ImageFileManager();
            var10.resetParameter();
            var10.getImageFileInfoById(imagefileid);
            InputStream var11 = var10.getInputStream();
            String var12 = var10.getImageFileName();
            ResponseBuilder responseBuilder = null;
            try {
            	responseBuilder =Response.ok(var11);
            	responseBuilder.header("Content-Disposition", "attachment;filename=" + URLEncoder.encode(var12, "UTF-8").replaceAll("\\+", "%20"));
            	responseBuilder.header("Content-Length", "" + var10.getFilesize());
            	responseBuilder.header("Cache-Control", "no-cache");
            	response =  responseBuilder.build();
            } catch (Exception var19) {
            	if(var11!=null) {
            		var11.close();
            	}
            	logger.error(var19);
            }
        }else {
        	logger.error(user.getLastname()+"没有"+imagefileid+"文件的权限");
        	response = Response.status(Response.Status.NOT_FOUND).entity(user.getLastname()+"没有"+imagefileid+"文件的权限").build();
        }
        
        return response;
    }
}