content: /*
   *  Copyright Beijing 58 Information Technology Co.,Ltd.
   *
   *  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.bj58.spat.gaea.client.secure;
  
  import java.io.UnsupportedEncodingException;
  
  /**
   * StringUtils
   * @author Service Platform Architecture Team (spat@58.com)
   */
  public class StringUtils {
  	/**
       * 使用ISO_8859_1字符集将此 String 编码为 byte序列
       * @param string 
       * @return
       */
      public static byte[] getBytesIso8859_1(String string) {
          return StringUtils.getBytesUnchecked(string, CharEncoding.ISO_8859_1);
      }
      /**
       * 使用UTF_16字符集将此 String 编码为 byte序列
       * @param string 
       * @return
       */
      public static byte[] getBytesUtf16(String string) {
          return StringUtils.getBytesUnchecked(string, CharEncoding.UTF_16);
      }
      /**
       * 使用UTF_8字符集将此 String 编码为 byte序列
       * @param string 
       * @return
       */
      public static byte[] getBytesUtf8(String string) {
          return StringUtils.getBytesUnchecked(string, CharEncoding.UTF_8);
      }
      /**
       * 使用指定的字符集将此 String 编码为 byte序列
       * @param string 
       * @param charsetName 编码格式
       * @return
       */
      public static byte[] getBytesUnchecked(String string, String charsetName) {
          if (string == null) {
              return null;
          }
          try {
              return string.getBytes(charsetName);
          } catch (UnsupportedEncodingException e) {
              throw StringUtils.newIllegalStateException(charsetName, e);
          }
      }
  
      private static IllegalStateException newIllegalStateException(String charsetName, UnsupportedEncodingException e) {
          return new IllegalStateException(charsetName + ": " + e);
      }
      
      /**
       * 通过使用指定的 charset 解码指定的 byte 数组，构造一个新的 String
       * @param bytes
       * @param charsetName
       * @return
       */
      public static String newString(byte[] bytes, String charsetName) {
          if (bytes == null) {
              return null;
          }
          try {
              return new String(bytes, charsetName);
          } catch (UnsupportedEncodingException e) {
              throw StringUtils.newIllegalStateException(charsetName, e);
          }
      }
      /**
       * 通过ISO-8859-1 解码指定的 byte 数组,构造一个新的 String
       * @param bytes
       * @return
       */
      public static String newStringIso8859_1(byte[] bytes) {
          return StringUtils.newString(bytes, CharEncoding.ISO_8859_1);
      }
      /**
       * 通过UTF_16 解码指定的 byte 数组,构造一个新的 String
       * @param bytes
       * @return
       */
      public static String newStringUtf16(byte[] bytes) {
          return StringUtils.newString(bytes, CharEncoding.UTF_16);
      }
      /**
       * 通过utf-8 解码指定的 byte 数组,构造一个新的 String
       * @param bytes
       * @return
       */
      public static String newStringUtf8(byte[] bytes) {
          return StringUtils.newString(bytes, CharEncoding.UTF_8);
      }
  
  }
  