- private final static String SYS_TEMP_FILE = System
- .getProperty("java.io.tmpdir") + "\\9884698793643198z.properties";
- private static Map<String, String> fileNames = null;
- /**
- * get a file path from a system temp file.
- *
- * @param keyOfFileName
- * @return
- */
- public static final String getAFilePathFromSysTempFile(String keyOfFileName) {
- if (null == fileNames) {
- fileNames = new HashMap<String, String>();
- loadFilePathsFromSysTempFile();
- }
- String path = fileNames.get(keyOfFileName);
- return null == path ? "" : path;
- }
- private static final boolean loadFilePathsFromSysTempFile() {
- try {
- if (!new File(SYS_TEMP_FILE).exists()) {
- new File(SYS_TEMP_FILE).createNewFile();
- return true;
- }
- Properties props = new Properties();
- InputStream in = new BufferedInputStream(new FileInputStream(
- SYS_TEMP_FILE));
- props.load(in);
- Enumeration<?> en = props.propertyNames();
- while (en.hasMoreElements()) {
- String key = (String) en.nextElement();
- String prop = props.getProperty(key);
- fileNames.put(key, prop);
- }
- return true;
- } catch (Exception e) {
- e.printStackTrace();
- return false;
- }
- }
- /**
- * save a file path to a system temp file.
- *
- * @param parameterName
- * @param parameterValue
- * @return
- */
- public static final int saveAFilePathToSysTempFile(String parameterName,
- String parameterValue) {
- Properties prop = new Properties();
- try {
- InputStream fis = new FileInputStream(SYS_TEMP_FILE);
- prop.load(fis);
- OutputStream fos = new FileOutputStream(SYS_TEMP_FILE);
- prop.setProperty(parameterName, parameterValue);
- prop.store(fos, "Update '" + parameterName + "' value");
- fileNames.put(parameterName, parameterValue);
- return fileNames.size();
- } catch (IOException e) {
- e.printStackTrace();
- return -1;
- }
- }
来源: http://www.phpxs.com/code/1002595/