jspsmartupload上传文件中文乱码

最新推荐文章于 2020-12-24 20:14:26 发布

zhaidizhu

最新推荐文章于 2020-12-24 20:14:26 发布

阅读量188

点赞数

本文介绍了解决使用JSpsmartupload上传文件时出现的中文乱码问题的方法。通过对SmartUpload类中的两个方法进行修改，实现了正确解析中文文件名及表单数据。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

采用jspsmartupload上传文件时，如果文件名含有中文，在服务器端取得文件名是会出现乱码。如果表单项中填写了中文，一样会有乱码问题。看了下jspsmartupload的源码，改了两个地方，现在可以没有乱码问题了。
第一个地方，修改类SmartUpload中的upload()方法


  public void upload()
        throws SmartUploadException, IOException, ServletException
    {
        int totalRead = 0;
        int readBytes = 0;
        long totalFileSize = 0L;
        boolean found = false;
        String dataHeader = new String();
        String fieldName = new String();
        String fileName = new String();
        String fileExt = new String();
        String filePathName = new String();
        String contentType = new String();
        String contentDisp = new String();
        String typeMIME = new String();
        String subTypeMIME = new String();
        boolean isFile = false;
        m_totalBytes = m_request.getContentLength();
        m_binArray = new byte[m_totalBytes];
        for(; totalRead < m_totalBytes; totalRead += readBytes)
            try
            {
                m_request.getInputStream();
                readBytes = m_request.getInputStream().read(m_binArray, totalRead, m_totalBytes - totalRead);
            }
            catch(Exception e)
            {
                throw new SmartUploadException("Unable to upload.");
            }

        for(; !found && m_currentIndex < m_totalBytes; m_currentIndex++)
            if(m_binArray[m_currentIndex] == 13)
                found = true;
            else
                m_boundary = m_boundary + (char)m_binArray[m_currentIndex];

        if(m_currentIndex == 1)
            return;
        m_currentIndex++;
        do
        {
            if(m_currentIndex >= m_totalBytes)
                break;
            dataHeader = getDataHeader();
            m_currentIndex = m_currentIndex + 2;
            isFile = dataHeader.indexOf("filename") > 0;
            fieldName = getDataFieldValue(dataHeader, "name");
            if(isFile)
            {
                filePathName = getDataFieldValue(dataHeader, "filename");
                fileName = getFileName(filePathName);
                fileExt = getFileExt(fileName);
                contentType = getContentType(dataHeader);
                contentDisp = getContentDisp(dataHeader);
                typeMIME = getTypeMIME(contentType);
                subTypeMIME = getSubTypeMIME(contentType);
            }
            getDataSection();
            if(isFile && fileName.length() > 0)
            {
                if(m_deniedFilesList.contains(fileExt))
                    throw new SecurityException("The extension of the file is denied to be uploaded (1015).");
                if(!m_allowedFilesList.isEmpty() && !m_allowedFilesList.contains(fileExt))
                    throw new SecurityException("The extension of the file is not allowed to be uploaded (1010).");
                if(m_maxFileSize > (long)0 && (long)((m_endData - m_startData) + 1) > m_maxFileSize)
                    throw new SecurityException(String.valueOf((new StringBuffer("Size exceeded for this file : ")).append(fileName).append(" (1105).")));
                totalFileSize += (m_endData - m_startData) + 1;
                if(m_totalMaxFileSize > (long)0 && totalFileSize > m_totalMaxFileSize)
                    throw new SecurityException("Total File Size exceeded (1110).");
            }
            if(isFile)
            {
                com.jspsmart.upload.File newFile = new com.jspsmart.upload.File();
                newFile.setParent(this);
                newFile.setFieldName(fieldName);
                newFile.setFileName(fileName);
                newFile.setFileExt(fileExt);
                newFile.setFilePathName(filePathName);
                newFile.setIsMissing(filePathName.length() == 0);
                newFile.setContentType(contentType);
                newFile.setContentDisp(contentDisp);
                newFile.setTypeMIME(typeMIME);
                newFile.setSubTypeMIME(subTypeMIME);
                if(contentType.indexOf("application/x-macbinary") > 0)
                    m_startData = m_startData + 128;
                newFile.setSize((m_endData - m_startData) + 1);
                newFile.setStartData(m_startData);
                newFile.setEndData(m_endData);
                m_files.addFile(newFile);
            } else
            {    
                /**
                 * 原来的代码
                 * String value = new String(m_binArray, m_startData, (m_endData - m_startData) + 1);
                 */
            	/**
            	 * 2009-9-17 修改 ，解决取得request的参数的中文编码问题
            	 */
                String value = new String(m_binArray, m_startData, (m_endData - m_startData) + 1, "utf-8");


            	m_formRequest.putParameter(fieldName, value);
            }
            if((char)m_binArray[m_currentIndex + 1] == '-')
                break;
            m_currentIndex = m_currentIndex + 2;
        } while(true);
    }

第二个地方，修改类SmartUpload中的getDataHeader()方法


 private String getDataHeader()
    {
        int start = m_currentIndex;
        int end = 0;
        int len = 0;
        boolean found = false;
        while(!found) 
            if(m_binArray[m_currentIndex] == 13 && m_binArray[m_currentIndex + 2] == 13)
            {
                found = true;
                end = m_currentIndex - 1;
                m_currentIndex = m_currentIndex + 2;
            } else
            {
                m_currentIndex++;
            }


        //原始代码
        //String dataHeader = new String(m_binArray, start, (end - start) + 1);
        /**
         * 2008-9-17 解决文件名的中文乱码问题
         */
        String dataHeader = null;
		try {
			dataHeader = new String(m_binArray, start, (end - start) + 1,"utf-8");
		} catch (UnsupportedEncodingException e) {
			e.printStackTrace();
		}
        return dataHeader;        
    }