java用HttpServletRequest取得http请求体

java用HttpServletRequest取得http请求体

import java.io.IOException;

import javax.servlet.http.HttpServletRequest;

public class HttpUtil {
	
    public static byte[] getRequestPostBytes(HttpServletRequest request)  
            throws IOException {  
        int contentLength = request.getContentLength();  
        if(contentLength < 0){  
            return null;  
        }  
        byte buffer[] = new byte[contentLength];  
        for (int i = 0; i < contentLength;) {   
            int readlen = request.getInputStream().read(buffer, i,  
                    contentLength - i);  
            if (readlen == -1) {  
                break;  
            }  
            i += readlen;  
        }  
        return buffer;  
    }  
  
    public static String getRequestPostStr(HttpServletRequest request)  
            throws IOException {  
        byte buffer[] = getRequestPostBytes(request);  
        String charEncoding = request.getCharacterEncoding();  
        if (charEncoding == null) {  
            charEncoding = "UTF-8";  
        }  
        return new String(buffer, charEncoding);  
    }  
}

 

谢谢