java how to call getreader twice

1public class CustomHttpServletRequestWrapper extends HttpServletRequestWrapper {
2
3private static final Logger logger = Logger.getLogger(CustomHttpServletRequestWrapper.class);
4private final String body;
5
6public CustomHttpServletRequestWrapper(HttpServletRequest request) {
7    super(request);
8
9    StringBuilder stringBuilder = new StringBuilder();  
10    BufferedReader bufferedReader = null;  
11
12    try {  
13        InputStream inputStream = request.getInputStream(); 
14
15        if (inputStream != null) {  
16            bufferedReader = new BufferedReader(new InputStreamReader(inputStream));  
17
18            char[] charBuffer = new char[128];  
19            int bytesRead = -1;  
20
21            while ((bytesRead = bufferedReader.read(charBuffer)) > 0) {  
22                stringBuilder.append(charBuffer, 0, bytesRead);  
23            }  
24        } else {  
25            stringBuilder.append("");  
26        }  
27    } catch (IOException ex) {  
28        logger.error("Error reading the request body...");  
29    } finally {  
30        if (bufferedReader != null) {  
31            try {  
32                bufferedReader.close();  
33            } catch (IOException ex) {  
34                logger.error("Error closing bufferedReader...");  
35            }  
36        }  
37    }  
38
39    body = stringBuilder.toString();  
40}
41
42@Override  
43public ServletInputStream getInputStream () throws IOException {          
44    final ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(body.getBytes());
45
46    ServletInputStream inputStream = new ServletInputStream() {  
47        public int read () throws IOException {  
48            return byteArrayInputStream.read();  
49        }  
50    };
51
52    return inputStream;  
53} 
54}