不多说直接贴代码(talk is cheap show me the code)

public static String readData(HttpServletRequest request) {
    BufferedReader br = null;
    try {
        StringBuilder result = new StringBuilder();
        br = request.getReader();
        for (String line; (line = br.readLine()) != null; ) {
            if (result.length() > 0) {
                result.append("\n");
            }
            result.append(line);
        }
        return result.toString();
    } catch (IOException e) {
        throw new RuntimeException(e);
    } finally {
        if (br != null) {
            try {
                br.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

log打印出的流大小