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;
   
   
   
   

    
    	}
   
   
   
   

    
    }