Request

 

Request获取请求数据：

请求行

   @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String method = req.getMethod();
        System.out.println(method);

        String ContextPath = req.getContextPath();
        System.out.println(ContextPath);

        StringBuffer url = req.getRequestURL();
        System.out.println(url);

        String uri = req.getRequestURI();
        System.out.println(uri);

        String QuertString = req.getQueryString();
        System.out.println(QuertString);
    }

输出结果

 

请求头：

// 获取请求头：user-agent：浏览器版本
        String header = req.getHeader("user-agent");

 

请求体

  @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        //获取post 请求体：请求参数
        //1.获取字符输入流
        BufferedReader br = req.getReader();
        //2.获取数据
        String line = br.readLine();
        System.out.println(line);

    }