java - 我希望我的文件路径适用于使用 Java 的 linux 和 Windows 环境

Question

我正在编写一个 java 代码来创建工作空间目录以 checkin 单个或多个文件。从 jsp 页面接收文件名下面是用于创建目录和文件路径的代码片段。

try {
        File uploadedFile = null;
        String tmpDir = context.createWorkspace();
        String filePath = tmpDir + java.io.File.separator;
        //System.out.println("filePath"+ filePath);
        //String filePath1 = tmpDir + java.util.regex.Pattern.quote(File.separator);
        //System.out.println("filePath1 "+ filePath1);
        DiskFileItemFactory factory = new DiskFileItemFactory();
        factory.setRepository(new File(tmpDir));
        ServletFileUpload upload = new ServletFileUpload(factory);
        List<FileItem> items = upload.parseRequest(request);
        HashMap hmRequest = new HashMap();
        String sFileName = DomainConstants.EMPTY_STRING;
        String sParamKey = DomainConstants.EMPTY_STRING;
        String sParamValue = DomainConstants.EMPTY_STRING;
        StringBuffer fileNameList = new StringBuffer();
        StringBuffer nameList = new StringBuffer();
        StringBuffer uploadfileNameList = new StringBuffer();
        StringBuffer uploadnameList = new StringBuffer();
        StringBuffer coverletterfileNameList = new StringBuffer();
        StringBuffer coverletternameList = new StringBuffer();

        if (null != items && items.size() > 0) 
        {
            Iterator<FileItem> iter = items.iterator();

            while (iter.hasNext()) 
            {
                FileItem item = iter.next();
                if (item.isFormField()) 
                {
                    sParamKey = item.getFieldName();
                    sParamValue = item.getString();
                    hmRequest.put(sParamKey, sParamValue);
                }
            }

            Iterator<FileItem> iter1 = items.iterator();
            while (iter1.hasNext()) 
            {
                FileItem item1 = iter1.next();
                if (!item1.isFormField()) 
                {
                    //String sFileName1=null;
                    sFileName = item1.getName();
                    String fieldname = item1.getFieldName();
                    if (UIUtil.isNotNullAndNotEmpty(sFileName) && fieldname.equals("coverLetterFile")) 
                    {
                        sFileName = sFileName.substring(sFileName.lastIndexOf("\\") + 1);
                        sFileName = 
                        System.out.println("sFileName"+ sFileName);
                        //sFileName1 = sFileName.substring(sFileName.lastIndexOf(java.util.regex.Pattern.quote(File.separator)) + 1);
                        //System.out.println("sFileName1111"+ sFileName1);
                        uploadedFile = new File(tmpDir + File.separator + sFileName);
                        item1.write(uploadedFile);
                        coverletterfileNameList.append(tmpDir + File.separator + sFileName);
                        coverletterfileNameList.append(",");
                        coverletternameList.append(sFileName);
                        coverletternameList.append(",");
                    }

当我在 Windows 上工作时，下行是否会在 linux 环境中造成问题。任何人都可以为此提出解决方案吗？

sFileName = sFileName.substring(sFileName.lastIndexOf("\") + 1);

Answer 1

使用 File.separator，它为您的系统环境填充正确的分隔符，而不是硬编码的字符串。