java - 如何将数据从servlet发送到rest api

Question

我想将数据从我的 servlet 发送到 rest api。它是如何完成的:

protected void doPost(
      HttpServletRequest  request
    , HttpServletResponse response
) throws ServletException, IOException {

    String Id= "MyId";

    response.setContentType("application/json");
    response.getWriter().write(Id);
    getServletContext()
        .getRequestDispatcher("<PathofAPI>")
        .forward(request, response);
}

一旦发送了数据，如何在我的 rest api 中检索它

Answer 1

或者，您必须使用 getter 和 setter 为您的 Id 参数创建 POJO 类:

String createRequestUrl="YOUR_LINK WHERE_YOU GET answer FROM";
RestTemplate template=new RestTemplate();
your_POJO_object.setYour_Pojo_Object(Id);
ObjectMapper objectMapper = new ObjectMapper();
MultiValueMap<String, String> orderRequestHeaders=new 
LinkedMultiValueMap<String,String>();
orderRequestHeaders.add("Content-Type", "application/json");
orderRequestHeaders.add("Accept", "application/json");
String orderCreateRequest=objectMapper.writeValueAsString(YOUR POJO object.class);
HttpEntity<String> orderRequest=new HttpEntity<String>(orderCreateRequest, orderRequestHeaders);
String response=template.postForObject(createRequestUrl, orderRequest, String.class);