欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

获取HttpServletRequest请求Body中的内容

程序员文章站 2024-02-04 19:48:40
...
  // 字符串读取
    // 方法一
    public static String ReadAsChars(HttpServletRequest request)
    {
 
        BufferedReader br = null;
        StringBuilder sb = new StringBuilder("");
        try
        {
            br = request.getReader();
            String str;
            while ((str = br.readLine()) != null)
            {
                sb.append(str);
            }
            br.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            if (null != br)
            {
                try
                {
                    br.close();
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
        }
        return sb.toString();
    }
 
    // 方法二
    public static void ReadAsChars2(HttpServletRequest request)
    {
        InputStream is = null;
        try
        {
            is = request.getInputStream();
            StringBuilder sb = new StringBuilder();
            byte[] b = new byte[4096];
            for (int n; (n = is.read(b)) != -1;)
            {
                sb.append(new String(b, 0, n));
            }
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            if (null != is)
            {
                try
                {
                    is.close();
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
        }
 
    }
 
    // 二进制读取
    public static byte[] readAsBytes(HttpServletRequest request)
    {
 
        int len = request.getContentLength();
        byte[] buffer = new byte[len];
        ServletInputStream in = null;
 
        try
        {
            in = request.getInputStream();
            in.read(buffer, 0, len);
            in.close();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
        finally
        {
            if (null != in)
            {
                try
                {
                    in.close();
                }
                catch (IOException e)
                {
                    e.printStackTrace();
                }
            }
        }
        return buffer;
    }
 

注意:HttpServletRequest 请求中的 body 内容读取一次,重复读取会报 java.io.IOException: Stream closed 异常。