ems/boco/src/main/java/org/onap/vfc/nfvo/emsdriver/commons/utils/StringUtil.java

   1 /**
   2  * Copyright 2017 BOCO Corporation.  CMCC Technologies Co., Ltd
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16 package org.onap.vfc.nfvo.emsdriver.commons.utils;
  17
  18 import java.io.File;
  19 import java.io.PrintWriter;
  20 import java.io.StringWriter;
  21
  22 public class StringUtil {
  23
  24         public static String getStackTrace(Throwable t){
  25
  26                 StringWriter sw = null;
  27                 PrintWriter pw = null;
  28                 try {
  29                         sw = new StringWriter();
  30                         pw = new PrintWriter(sw);
  31                         t.printStackTrace(pw);
  32                         pw.flush();
  33                         sw.flush();
  34                         return sw.getBuffer().toString();
  35                 } catch (Exception e) {
  36
  37                 }finally{
  38                         try {
  39                                 if(pw != null) pw.close();
  40                                 if(sw != null) sw.close();
  41                         } catch (Exception e2) {
  42
  43                         }
  44                 }
  45                 return null;
  46         }
  47
  48         public static String addSlash(String dirName) {
  49                 if (dirName.endsWith(File.separator))
  50                         return dirName;
  51                 return dirName + File.separator;
  52         }
  53
  54         public static  boolean isBank(String str){
  55
  56                 if(str == null || str.trim().length() == 0){
  57
  58                         return true;
  59                 }
  60                 return false;
  61         }
  62 }