使用Spring的@RequestBody,然后读取HttpServletRequest.getInputStream

所以,基本上你需要计算请求体的散列。优雅的方法是在 InputStream .

@RequestBody 需要创造 HttpMessageConverter 手动):

@RequestMapping(...)
public void handle(HttpServletRequest request) throws IOException {
    final HashingInputStreamDecorator d = 
        new HashingInputStreamDecorator(request.getInputStream(), secretKey);
    HttpServletRequest wrapper = new HttpServletRequestWrapper(request) {
        @Override
        public ServletInputStream getInputStream() throws IOException {
            return d;
        }
    };

    HttpMessageConverter conv = ...;
    Foo requestBody = (Foo) conv.read(Foo.class, new ServletServerHttpRequest(wrapper));
    String hash = d.getHash();

    ...
}

read 方法 HashingInputStreamDecorator .

你也可以使用 如果您创建 Filter 去申请装修师。在这种情况下,decorator可以将计算出的哈希作为请求属性传递给handler方法。但是,您需要仔细映射此筛选器,以便仅将其应用于特定处理程序方法的请求。

  <bean id="urlMapping" class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping">
    <property name="interceptors">
      <list>
        <bean class="org.foo.MyAuthInterceptor"/>
      </list>
    </property>
  </bean>

这些拦截器可以访问HttpServletRequest,但如果从流中读取,则参数映射器可能无法读取它。

public class AuthInterceptor extends HandlerInterceptorAdapter {

  public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
    ...
  }

  public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView mav) {
    ...
  }
}