mirror of https://github.com/apache/cloudstack.git
84 lines
2.6 KiB
Java
84 lines
2.6 KiB
Java
// Licensed to the Apache Software Foundation (ASF) under one
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// or more contributor license agreements. See the NOTICE file
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// distributed with this work for additional information
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// regarding copyright ownership. The ASF licenses this file
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// to you under the Apache License, Version 2.0 (the
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// "License"); you may not use this file except in compliance
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// the License. You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing,
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// software distributed under the License is distributed on an
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// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
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// KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations
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// under the License.
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package com.cloud.utils;
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import java.io.BufferedInputStream;
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import java.io.BufferedWriter;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileOutputStream;
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import java.io.FileWriter;
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import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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public class FileUtil {
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public static String readFileAsString(String filePath) {
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File file = new File(filePath);
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if(!file.exists())
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return null;
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try {
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byte[] buffer = new byte[(int)file.length()];
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BufferedInputStream f = null;
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try {
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f = new BufferedInputStream(new FileInputStream(filePath));
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f.read(buffer);
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} finally {
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if (f != null) {
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try {
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f.close();
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} catch (IOException ignored) {
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}
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}
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}
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return new String(buffer);
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} catch(IOException e) {
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return null;
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}
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}
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public static void writeToFile(String content, String filePath) throws IOException {
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BufferedWriter out = null;
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try {
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out = new BufferedWriter(new FileWriter(filePath));
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out.write(content);
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} finally {
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if(out != null)
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out.close();
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}
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}
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public static void copyfile(File f1, File f2) throws IOException {
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InputStream in = new FileInputStream(f1);
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OutputStream out = new FileOutputStream(f2);
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try {
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byte[] buf = new byte[1024];
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int len;
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while ((len = in.read(buf)) > 0) {
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out.write(buf, 0, len);
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}
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} finally {
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in.close();
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out.close();
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}
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}
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}
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