137 lines
4.2 KiB
Java
137 lines
4.2 KiB
Java
/*
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* This file is part of the Wildfire Chat package.
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* (c) Heavyrain2012 <[email protected]>
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*
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* For the full copyright and license information, please view the LICENSE
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* file that was distributed with this source code.
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*/
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package win.liyufan.im;
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import org.slf4j.Logger;
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import java.net.*;
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import java.util.Enumeration;
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public class Utility {
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public static InetAddress getLocalAddress(){
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try {
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Enumeration<NetworkInterface> b = NetworkInterface.getNetworkInterfaces();
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while( b.hasMoreElements()){
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for ( InterfaceAddress f : b.nextElement().getInterfaceAddresses())
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if ( f.getAddress().isSiteLocalAddress())
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return f.getAddress();
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}
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} catch (SocketException e) {
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e.printStackTrace();
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}
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return null;
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}
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public static void printExecption(Logger LOG, Exception e) {
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String message = "";
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for(StackTraceElement stackTraceElement : e.getStackTrace()) {
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message = message + System.lineSeparator() + stackTraceElement.toString();
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}
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LOG.error("Exception: {}", e.getMessage());
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LOG.error(message);
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}
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public static String getMacAddress() throws UnknownHostException,
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SocketException {
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InetAddress ipAddress = InetAddress.getLocalHost();
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NetworkInterface networkInterface = NetworkInterface
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.getByInetAddress(ipAddress);
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byte[] macAddressBytes = networkInterface.getHardwareAddress();
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StringBuilder macAddressBuilder = new StringBuilder();
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for (int macAddressByteIndex = 0; macAddressByteIndex < macAddressBytes.length; macAddressByteIndex++) {
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String macAddressHexByte = String.format("%02X",
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macAddressBytes[macAddressByteIndex]);
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macAddressBuilder.append(macAddressHexByte);
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if (macAddressByteIndex != macAddressBytes.length - 1)
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{
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macAddressBuilder.append(":");
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}
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}
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return macAddressBuilder.toString();
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}
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/**
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* 格式化
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*
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* @param jsonStr
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* @return
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* @author lizhgb
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* @Date 2015-10-14 下午1:17:35
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* @Modified 2017-04-28 下午8:55:35
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*/
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public static String formatJson(String jsonStr) {
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if (null == jsonStr || "".equals(jsonStr))
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return "";
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StringBuilder sb = new StringBuilder();
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char last = '\0';
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char current = '\0';
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int indent = 0;
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boolean isInQuotationMarks = false;
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for (int i = 0; i < jsonStr.length(); i++) {
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last = current;
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current = jsonStr.charAt(i);
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switch (current) {
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case '"':
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if (last != '\\'){
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isInQuotationMarks = !isInQuotationMarks;
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}
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sb.append(current);
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break;
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case '{':
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case '[':
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sb.append(current);
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if (!isInQuotationMarks) {
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sb.append('\n');
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indent++;
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addIndentBlank(sb, indent);
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}
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break;
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case '}':
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case ']':
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if (!isInQuotationMarks) {
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sb.append('\n');
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indent--;
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addIndentBlank(sb, indent);
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}
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sb.append(current);
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break;
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case ',':
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sb.append(current);
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if (last != '\\' && !isInQuotationMarks) {
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sb.append('\n');
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addIndentBlank(sb, indent);
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}
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break;
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default:
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sb.append(current);
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}
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}
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return sb.toString();
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}
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/**
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* 添加space
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*
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* @param sb
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* @param indent
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* @author lizhgb
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* @Date 2015-10-14 上午10:38:04
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*/
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private static void addIndentBlank(StringBuilder sb, int indent) {
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for (int i = 0; i < indent; i++) {
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sb.append('\t');
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}
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}
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}
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