StreamTools工具类---将二进制输入流转为字符流--返回字符串

   
   
   
   

    
    
    
    
 
     package com.itheima.mobilesafe.utils; 
    
    
    
    
    
 
      
    
    
    
    
    
 
     import java.io.ByteArrayOutputStream; 
    
    
    
    
    
 
     import java.io.IOException; 
    
    
    
    
    
 
     import java.io.InputStream; 
    
    
    
    
    
 
      
    
    
    
    
    
 
     public class StreamTools { 
    
    
    
    
    
 
      /** 
    
    
    
    
    
 
      * @param is 输入流 
    
    
    
    
    
 
      * @return String 返回的字符串 
    
    
    
    
    
 
      * @throws IOException  
    
    
    
    
    
 
      */ 
    
    
    
    
    
 
      public static String readFromStream(InputStream is) throws IOException{ 
    
    
    
    
    
 
      ByteArrayOutputStream baos = new ByteArrayOutputStream(); 
    
    
    
    
    
 
      byte[] buffer = new byte[1024]; 
    
    
    
    
    
 
      int len = 0; 
    
    
    
    
    
 
      while((len = is.read(buffer))!=-1){ 
    
    
    
    
    
 
      baos.write(buffer, 0, len); 
    
    
    
    
    
 
      } 
    
    
    
    
    
 
      is.close(); 
    
    
    
    
    
 
      String result = baos.toString(); 
    
    
    
    
    
 
      baos.close(); 
    
    
    
    
    
 
      return result; 
    
    
    
    
    
 
      } 
    
    
    
    
    
 
     }