Java 數據流轉換工具類

    import java.io.ByteArrayOutputStream;

    import java.io.InputStream;


/** 
 * 數據流轉換工具類 
 * 
 */  
public class StreamUtil {  

    /** 
     * 從輸入流中獲取數據 
     * @param inStream 輸入流 
     * @return 
     * @throws Exception 
     */  
    public static byte[] readStreamToByte(InputStream inStream) throws Exception{  
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();  
        byte[] buffer = new byte[1024];  
        int len = 0;  
        while( (len=inStream.read(buffer)) != -1 ){  
            outStream.write(buffer, 0, len);  
        }  
        inStream.close();  
        return outStream.toByteArray();  
    }  

    /** 
     * 從輸入流中獲取數據 
     * @param inStream 輸入流 
     * @return 
     * @throws Exception 
     */  
    public static String readStreamToString(InputStream inStream) throws Exception{  
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();  
        byte[] buffer = new byte[1024];  
        int len = 0;  
        while( (len=inStream.read(buffer)) != -1 ){  
            outStream.write(buffer, 0, len);  
        }  
        inStream.close();  
        return outStream.toString();  
    }  

    /** 
     * 將輸入流轉化成某字符編碼的String 
     * @param inStream 輸入流 
     * @param encoding 編碼 
     * @return 
     * @throws Exception 
     */  
    public static String readStreamToString(InputStream inStream, String encoding) throws Exception{  
        ByteArrayOutputStream outStream = new ByteArrayOutputStream();  
        byte[] buffer = new byte[1024];  
        int len = 0;  
        while( (len=inStream.read(buffer)) != -1 ){  
            outStream.write(buffer, 0, len);  
        }  
        inStream.close();  
        return new String(outStream.toByteArray(), encoding);  
    }  


}  </pre><br />