如何在spring boot mvc中执行请求之前修改Http headers [英] How to modify Http headers before executing request in spring boot mvc

问题描述

我有多个休息端点.userId(http 标头)在所有端点中都是通用的.我想应用一个逻辑，假设如果未提供则设置其默认值，或者如果在请求进入方法之前在请求中提供则修剪它(例如:心跳).我们如何在 spring boot rest mvc 中实现这一点.

I have multiple rest endpoints. userId (http header) is common in all endpoints. I want to apply a logic, let say set its default value if not provided or trim it if is provided in request before request enters the method (for eg: heartbeat). How can we achieve this in spring boot rest mvc.

@RestController
public class MyResource {



        @RequestMapping(value = "/heartbeat", method= RequestMethod.GET)
        public String heartbeat (@RequestHeader (value="userId", required=false) String userId) 
        {
           ...
        }
    }

推荐答案

你能试试这个吗?

@Configuration
@Slf4j
public class HttpHeaderModificationConfig implements Filter {

  private static final String HEADER_DEMO_NAME = "name";

  @Override
  public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
      throws IOException, ServletException {
    final HttpServletRequest req = (HttpServletRequest) request;
    // modify HTTP Request Header
    final HttpServletRequestWrapper reqWrapper = new HttpServletRequestWrapper(req) {

      @Override
      public String getHeader(String name) {
        if (HEADER_DEMO_NAME.equals(name)) {
          return "Changed";
        }
        return super.getHeader(name);
      }
    };
    log.info("After Changed with Name {}", reqWrapper.getHeader(HEADER_DEMO_NAME));
    chain.doFilter(reqWrapper, response);
  }

}

这篇关于如何在spring boot mvc中执行请求之前修改Http headers的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！