Java 重定向时向 Zuul 添加标头
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/50040703/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Adding Headers to Zuul when re-directing
提问by Bocky
I am trying to use Zuulto redirect calls to a downstream system somewhere else.
In the re-direct, I need to add in a Header with necessary data for the apireceiving the redirection to process. I can't seem to get the downstream system to detect this data. Attached is my code.
I am using Zuulfrom Edgware.SR3, Spring Boot 1.5.12
我正在尝试Zuul将调用重定向到其他地方的下游系统。在api重定向中，我需要添加一个包含必要数据的 Header，以便接收要处理的重定向。我似乎无法让下游系统检测到这些数据。附上我的代码。我正在使用Zuul从Edgware.SR3, Spring Boot 1.5.12
Zuul Filter
祖尔过滤器
@Component
public class RouteFilter extends ZuulFilter{
@Override
public Object run() {
//Testing to add header
context.getRequest().getParameterMap().put("api", new String[]{"api"});
context.getResponse().setHeader("api", api);
context.addZuulResponseHeader("api", "api");
context.addZuulRequestHeader("api", "api");
context.setSendZuulResponse(false);
context.put(FORWARD_TO_KEY, redirect_urls.get(key));
context.setResponseStatusCode(HttpStatus.SC_TEMPORARY_REDIRECT);
context.getResponse().sendRedirect(redirect_urls.get(key));
return null;
}
}
Redirected Service Code
重定向服务代码
@RequestMapping(value = "/forward")
public ResponseEntity<String> forwardToMe(@RequestHeader(required = true, name = "api")String api){
return new ResponseEntity<String>("Hi",HttpStatus.OK);
}
Error Received in Postman
在邮递员中收到错误
{ "timestamp": 1524737817729, "status": 400, "error": "Bad Request", "exception": "org.springframework.web.bind.ServletRequestBindingException", "message": "Missing request header 'api' for method parameter of type String", "path": "/forward" }
{“时间戳”：1524737817729，“状态”：400，“错误”：“错误请求”，“异常”：“org.springframework.web.bind.ServletRequestBindingException”，“消息”：“缺少请求标头'api' String 类型的方法参数", "path": "/forward" }
回答by redoff
I guess you use a Route Filter, maybe you can try with a Pre Filter.
我猜您使用的是Route Filter，也许您可以尝试使用Pre Filter。
Adding a custom header can be done with something like this : context.addZuulRequestHeader("Authorization", "Basic " + credentials);.
添加自定义标题可以像这样进行：context.addZuulRequestHeader("Authorization", "Basic " + credentials);。
For the redirection part, you can check this thread
对于重定向部分，您可以查看此线程
回答by Thomas Tse
I update my comment here just in case if anyone is still facing this problem. I found this problem recently and resolved by adding the following configuration in my application.yml
我在这里更新我的评论，以防万一有人仍然面临这个问题。我最近发现了这个问题并通过在我的 application.yml 中添加以下配置来解决
application.yml
...
zuul:
sensitive-headers:
- Cookie,Set-Cookie
...
application.yml
...
zuul:
sensitive-headers:
- Cookie,Set-Cookie
...
Reference Link below:
https://cloud.spring.io/spring-cloud-static/Dalston.SR5/multi/multi__router_and_filter_zuul.html
参考链接如下：https:
//cloud.spring.io/spring-cloud-static/Dalston.SR5/multi/multi__router_and_filter_zuul.html
回答by Didier R. G.
A little late my response but works fine
As referred in the official documentation Cookies and Sensitive Headers
The sensitiveHeaders are a blacklist, and the default is not empty. Consequently, to make Zuul send all headers (except the ignored ones), you must explicitly set it to the empty list. Doing so is necessary if you want to pass cookie or authorization headers to your back end. The following example shows how to use sensitiveHeaders:
有点晚了我的反应，但能正常工作
作为官方文件中被称为饼干和敏感头
的sensitiveHeaders是一个黑名单，默认不为空。因此，to make Zuul send all headers (except the ignored ones), you must explicitly set it to the empty list。如果您想将 cookie 或授权标头传递到您的后端，那么这样做是必要的。以下示例显示了如何使用sensitiveHeaders：
zuul:
routes:
entry:
path: /users/**
strip-prefix: false
service-id: users-service
sensitive-headers:
- Cookie,Set-Cookie
This implemented examplecan also help you
这个实现的例子也可以帮助你
