dev 契约锁

P15GEN2\59518

2024-05-29 d4210c7c4b04abde20037ea8aa0f54ef8a2649aa

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package foundation.io.object;
 
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
 
import javax.servlet.http.HttpServletRequest;
 
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
 
import foundation.dao.DataReader;
import foundation.server.config.Configer;
import foundation.util.Util;
 
 
public class UploadReader {
 
    private static int MaxFileSize = 1;
    private List<FileItemAgent> fileItemList;
    
    static {
        MaxFileSize = Configer.getInt("MaxFileSize", 10);
        MaxFileSize = MaxFileSize * 1024 * 1024;
    }
    
    public UploadReader(HttpServletRequest request) throws Exception {
 
    }
 
    public UploadReader(DataReader dataReader) throws Exception {
        //1. 
        fileItemList = new ArrayList<FileItemAgent>();
        
        //2. parse
        parse(dataReader);
    }
 
    private void parse(DataReader dataReader) throws Exception {
        HttpServletRequest request = dataReader.getRequest();
        
        DiskFileItemFactory factory = new DiskFileItemFactory();
        factory.setSizeThreshold(MaxFileSize);
        
        ServletFileUpload upload = new ServletFileUpload(factory);
        upload.setFileSizeMax(MaxFileSize);
        upload.setSizeMax(MaxFileSize * 5);
 
        FileItemAgent fileForm = new FileItemAgent();
        fileItemList.add(fileForm);
        
        List<FileItem> items = upload.parseRequest(request);
        Iterator<FileItem> iterator = items.iterator();
        
        while (iterator.hasNext()) {
            FileItem item = (FileItem) iterator.next();
            
            String fieldName = item.getFieldName();
            if (Util.isEmpty(fieldName)) {
                continue;
            }
            
            //1. load parameters
            if (item.isFormField()) {
                String value = item.getString("UTF-8");
                dataReader.loadOneParameter(fieldName, value);
                continue; 
            }
            
            //2. load files   
            fileForm.setFileItem(item);
        }
    }
 
    public FileItemAgent getFistFileItem() {
        if (fileItemList.isEmpty()) {
            return null;
        }
        
        return fileItemList.get(0);
    }
    
    public List<FileItemAgent> getFileItemList() {
        return fileItemList;
    }
}