IO Foundation 4- 目录结构检查器 FolderStructureChecker-优快云博客

本文介绍了一个用于验证特定目录结构正确性的Java类。该类确保目录仅包含预定的子目录（css、js、image），并按预期格式组织文件。如果发现不符合规定的情况，将抛出异常。

需求：

这又是一个非常有趣的需求，我们需要一个目录有以下固定的结构:

-css

--1.css

--abc.css

-js

-js1.js

-js2.js

-image

-image1.jpg

-image2.gif

也就是说：

子目录必须是css,js,image，如果有其他的子目录，则说明这个目录结构不合法

实现：

/**
* This class is used for checking whether the folder has the correct folder
* structure
*
* @author cwang58
* @created date: Aug 3, 2012
*/
public class FolderStructureChecker implements IFolderStructureChecker {
private final Logger logger = LoggerFactory
.getLogger(FolderStructureChecker.class);
private static ConfigureUtility configureUtility;
private String javascriptFolderName;
private String cssFolderName;
private String imageFolderName;
public FolderStructureChecker() throws Exception {
try {
configureUtility = ConfigureUtility.getInstance();
setJavascriptFolderName(configureUtility
.getProperty(JAVASCRIPT_FOLDER));
setCssFolderName(configureUtility.getProperty(CSS_FOLDER));
setImageFolderName(configureUtility.getProperty(IMAGE_FOLDER));
} catch (Exception ex) {
if (logger.isErrorEnabled()) {
logger.error("fail when parsing the zip bundle configureation file");
}
throw new ConfigureSystemException(
"failed when parsing the properties file ", ex);
}
}
/**
* this file can be used for checking the zip file structure ,if it matches
* the same structure as following
*
* --js --js1.js --js2.js --css --css1.css --css2.css --image --a.jpg
* --b.png --c.git index.htm
*
*
* then ok
*
* if the file name doens't match the one listed here,or if the root has
* extra folder name ,it throws Exception
*
*
* @param source
* the path of the folder that we need to check the folder
* structure
*/
public void checkFolderStructure(String source) throws Exception {
// TODO Auto-generated method stub
File rootFolder = new File(source);
if (!rootFolder.isDirectory()) {
if (logger.isErrorEnabled()) {
logger.error("The root should be a directory not a file");
}
throw new ParameterInvalidException("The folder root:" + source
+ " should be a directory not a file");
}
// get all the directory sub-folder of the root folder
File[] files = rootFolder.listFiles();
// this list is only used for storing all the subFolders inside the root
// folder
List<File> subFoldersInRootFolder = new ArrayList<File>();
for (File file : files) {
if (file.isDirectory())
subFoldersInRootFolder.add(file);
}
// first ,check the number of sub-folders whether it is 3( has
// "css","js","image" 3 folders totally)
// if the number is not 3, then the check returns false
if (subFoldersInRootFolder.size() != 3) {
if (logger.isErrorEnabled()) {
logger.error("The number of the sub folders of root foler doesn't match");
}
throw new InvalidFolderStructureException(
"In folder struture check,the number of the sub folders of root foler doesn't match");
}
// traverse all the subFolders
for (File subFolder : subFoldersInRootFolder) {
// get the folder name of the sub-folder
String subFolderName = subFolder.getName();
if (logger.isDebugEnabled()) {
logger.debug("checking the subFolder named:" + subFolderName);
}
// execute the comparation ,if the subFolderName doesn't match any
// one of {"image","js","css"}
// then ,the check will return false
if ((!subFolderName.trim().equals(getJavascriptFolderName()))
&& (!subFolderName.trim().equals(getCssFolderName()))
&& (!subFolderName.trim().equals(getImageFolderName()))) {
if (logger.isErrorEnabled()) {
logger.error("the folder name: " + subFolderName
+ " is not what we expected");
}
throw new InvalidFolderStructureException("the folder name: "
+ subFolderName + " is not what we expected");
}
}
}
//setter,getter这里略去
}