Java 使用HttpServletRequest读取POST表单数据

几天来，我一直在尝试读取表单中发布的数据，内容类型为

application/x-www-Form-urlencoded

根据，通过POST请求和

application/x-www-form-urlencoded

内容类型发送到服务器的数据如下发送到服务器：

POST / HTTP/1.1
Host: foo.com
Content-Type: application/x-www-form-urlencoded
Content-Length: 13

say=Hi&to=Mom

我想用

HttpServletRequest

读取

say

和

to

的键和值

以下是我的尝试：

@POST
@Path("/webhook/{psp_code}")    
public Response notifyPSP(@Context HttpServletRequest httpServletRequest,
  @PathParam("psp_code") String pspCode) {

    String payload = getRequestBody( httpServletRequest );
    Map<String, List<String>> formData = getFormData( httpServletRequest );

    log.info( "Payload {}", payload);  
    log.info( "Form Data {}", formData );
}

private String getRequestBody(HttpServletRequest request) {
    String content;

    try
    {
        ServletInputStream inputStream = request.getInputStream();
        content = IOUtils.toString( inputStream );
    }
    catch ( IOException e )
    {
        content = null;
    }
    return content;
}

private Map<String, List<String>> getFormData(HttpServletRequest request) {
    Map<String, String[]> parameterMap = request.getParameterMap();
    Map<String, List<String>> collect = parameterMap.entrySet().stream().collect( Collectors.toMap( entry -> entry.getKey(), entry -> Arrays.asList( entry.getValue() ) ) );
    return collect;
}

---

也许我在这里遗漏了一些东西，但我如何才能读取这些值呢

您可以尝试记录parameterMap的值吗。因为我希望collect变量有问题。为了测试，我删除了collect和通过

getParameterMap

返回的原始值，结果仍然相同

Payload
Form Data {}