com.alibaba.metrics.os.utils.FileUtils Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.alibaba.metrics.os.utils;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
public class FileUtils {
/**
* Read the content of file
* @param path the path to file
* @return the file content as string
*/
public static String readFile(String path) {
BufferedReader reader = null;
StringBuffer sb = new StringBuffer();
try {
reader = new BufferedReader(new FileReader(new File(path)));
String line;
while ((line = reader.readLine()) != null) {
sb.append(line + "\n");
}
} catch (Exception e) {
return e.getMessage();
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
// ignore
}
}
}
return sb.toString();
}
/**
* Read the content of file
* @param path the path to file
* @return the file content as string
*/
public static List readFileAsStringArray(String path) throws IOException {
BufferedReader reader = null;
List lines = new ArrayList();
try {
File p = new File(path);
if (!p.exists()) {
return lines;
}
reader = new BufferedReader(new FileReader(new File(path)));
String line;
while ((line = reader.readLine()) != null) {
lines.add(line);
}
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
// ignore
}
}
}
return lines;
}
}