com.blade.kit.Tools Maven / Gradle / Ivy
/**
* Copyright (c) 2015, biezhi 王爵 ([email protected])
*
* Licensed 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.blade.kit;
import com.blade.mvc.http.Request;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.channels.FileChannel;
import java.util.Random;
/**
* Blade Core Class
*
* @author biezhi
* @since 1.7.1-alpha
*/
public final class Tools {
private static final Random random = new Random();
private Tools() {
}
/**
* get ip address
*
* @param request
* @return
*/
public static String getIpAddr(Request request) {
if (null == request) {
return "0.0.0.0";
}
String ip = request.header("x-forwarded-for");
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.header("Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.header("WL-Proxy-Client-IP");
}
if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
ip = request.address();
}
return ip;
}
public static void copyFileUsingFileChannels(File source, File dest) throws IOException {
FileChannel inputChannel = null;
FileChannel outputChannel = null;
try {
inputChannel = new FileInputStream(source).getChannel();
outputChannel = new FileOutputStream(dest).getChannel();
outputChannel.transferFrom(inputChannel, 0, inputChannel.size());
} finally {
assert inputChannel != null;
inputChannel.close();
assert outputChannel != null;
outputChannel.close();
}
}
public static int rand(int min, int max) {
return random.nextInt(max) % (max - min + 1) + min;
}
public static String flowAutoShow(int value) {
int kb = 1024;
int mb = 1048576;
int gb = 1073741824;
if (Math.abs(value) > gb) {
return Math.round(value / gb) + "GB";
} else if (Math.abs(value) > mb) {
return Math.round(value / mb) + "MB";
} else if (Math.abs(value) > kb) {
return Math.round(value / kb) + "KB";
}
return Math.round(value) + "";
}
public static String md5(String str) {
return EncrypKit.md5(str);
}
public static String md5(String str1, String str2) {
return EncrypKit.md5(str1 + str2);
}
public static String sha1(String str) {
return EncrypKit.encryptSHA1ToString(str);
}
public static String sha256(String str) {
return EncrypKit.encryptSHA256ToString(str);
}
public static String sha512(String str) {
return EncrypKit.encryptSHA512ToString(str);
}
public static String enAes(String data, String key) throws Exception {
Cipher cipher = Cipher.getInstance("AES");
SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
cipher.init(Cipher.ENCRYPT_MODE, secretKeySpec);
byte[] encryptedBytes = cipher.doFinal(data.getBytes());
return new BASE64Encoder().encode(encryptedBytes);
}
public static String deAes(String data, String key) throws Exception {
Cipher cipher = Cipher.getInstance("AES");
SecretKeySpec secretKeySpec = new SecretKeySpec(key.getBytes("UTF-8"), "AES");
cipher.init(Cipher.DECRYPT_MODE, secretKeySpec);
byte[] cipherTextBytes = new BASE64Decoder().decodeBuffer(data);
byte[] decValue = cipher.doFinal(cipherTextBytes);
return new String(decValue);
}
}