@Deprecated
	public static String readFileToString(final File file) throws IOException {
		return readFileToString(file, Charset.defaultCharset());
	}
Reads the contents of a file into a String using the default encoding for the VM.
The file is always closed.
@param file the file to read, must not be {@code null}
@return the file contents, never {@code null}
@throws IOException in case of an I/O error
@deprecated 2.5 use {@link #readFileToString(File, String)} instead (and specify
the appropriate encoding)
spring-cloud-alibaba-starters/spring-cloud-alibaba-commons/src/main/java/com/alibaba/cloud/commons/io/FileUtils.java