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    # Zuul Filter 又是我,今天乾脆就寫一寫好了,Zuul 到底能不能攔截 post 來測試看看大牛寫的 這篇寫得很好 https://blog.csdn.net/q1009020096/article/details/86313601 ![](https://i.imgur.com/NEm1opN.png) ![](https://i.imgur.com/CnKdS5F.png) ```java @Override public Object run() { //sendRequest(); RequestContext ctx = RequestContext.getCurrentContext(); HttpServletRequest request = ctx.getRequest(); System.out.println(request.getMethod()); System.out.println( request.getRequestURL().toString()); System.out.println( request.getHeader("Authorization")); System.out.println(request.getParameter("test")); HttpServletRequestWrapper httpServletRequestWrapper = (HttpServletRequestWrapper) request; String token2 = httpServletRequestWrapper.getRequest().getParameter("test"); String token = request.getParameter("token");// 获取请求的参数 // try { // System.out.println(sendGet(token)); // } catch (IOException e) { // // TODO Auto-generated catch block // e.printStackTrace(); // } try { if (sendGet(token)) { ctx.setSendZuulResponse(true); //对请求进行路由 ctx.setResponseStatusCode(200); ctx.set("isSuccess", true); return null; } else { ctx.setSendZuulResponse(false); //不对其进行路由 ctx.setResponseStatusCode(400); ctx.setResponseBody("token is empty"); ctx.set("isSuccess", false); return null; } } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } return null; } ``` 這樣就可以來區分到底要在Zuul 邏輯和 要在 service 寫邏輯的問題了。 那麼帳號密碼的流程也很簡單 既然我們可以在 filter 攔截到 post 帳號密碼那麼就簡單一點了 ```java public class TokenFilter extends ZuulFilter { private final static CloseableHttpClient httpClient = HttpClients.createDefault(); @Override public String filterType() { return "pre"; // 可以在请求被路由之前调用 } @Override public int filterOrder() { return 0; // filter执行顺序,通过数字指定 ,优先级为0,数字越大,优先级越低 } @Override public boolean shouldFilter() { return true;// 是否执行该过滤器,此处为true,说明需要过滤 } @Override public Object run() { //sendRequest(); RequestContext ctx = RequestContext.getCurrentContext(); HttpServletRequest request = ctx.getRequest(); System.out.println(request.getMethod()); System.out.println( request.getRequestURL().toString()); System.out.println( request.getHeader("Authorization")); System.out.println(request.getParameter("test")); HttpServletRequestWrapper httpServletRequestWrapper = (HttpServletRequestWrapper) request; String username = httpServletRequestWrapper.getRequest().getParameter("username"); String password = httpServletRequestWrapper.getRequest().getParameter("password"); String token = request.getParameter("token");// 获取请求的参数 // try { // System.out.println(sendGet(token)); // } catch (IOException e) { // // TODO Auto-generated catch block // e.printStackTrace(); // } if(StringUtils.isNotBlank(username)&& StringUtils.isNotBlank(password) && request.getRequestURL().toString().indexOf("login") >0) { try { if(sendRequest(username,password)) { ctx.setSendZuulResponse(true); //对请求进行路由 ctx.setResponseStatusCode(200); ctx.setResponseBody("123"); ctx.set("isSuccess", true); return null; } else { ctx.setSendZuulResponse(false); //不对其进行路由 ctx.setResponseStatusCode(400); ctx.setResponseBody("驗證帳號密碼成失敗"); ctx.set("isSuccess", false); return null; } } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } }else { try { if (sendGet(token)) { ctx.setSendZuulResponse(true); //对请求进行路由 ctx.setResponseStatusCode(200); ctx.set("isSuccess", true); return null; } else { ctx.setSendZuulResponse(false); //不对其进行路由 ctx.setResponseStatusCode(400); ctx.setResponseBody("token is empty"); ctx.set("isSuccess", false); return null; } } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } return null; } // one instance, reuse private static boolean sendRequest(String username,String password) throws Exception{ HttpPost post = new HttpPost("http://192.168.0.146:8080/login"); // add request parameter, form parameters List<NameValuePair> urlParameters = new ArrayList<>(); urlParameters.add(new BasicNameValuePair("username", username)); urlParameters.add(new BasicNameValuePair("password", password)); //urlParameters.add(new BasicNameValuePair("custom", "secret")); post.setEntity(new UrlEncodedFormEntity(urlParameters)); try (CloseableHttpClient httpClient = HttpClients.createDefault(); CloseableHttpResponse response = httpClient.execute(post)) { String result = EntityUtils.toString(response.getEntity()); System.out.println(); httpClient.close(); response.close(); return readjson(result); } } private static boolean sendGet(String token) throws ClientProtocolException, IOException { HttpGet request = new HttpGet("http://192.168.0.146:8080/user"); // add request headers request.addHeader("Authorization",token); // request.addHeader(HttpHeaders.USER_AGENT, "Googlebot"); try (CloseableHttpResponse response = httpClient.execute(request)) { // Get HttpResponse Status //System.out.println(response.getStatusLine().toString()); HttpEntity entity = response.getEntity(); Header headers = entity.getContentType(); // System.out.println(headers); if (entity != null) { // return it as a String String result = EntityUtils.toString(entity); System.out.println(result); //readjson(result); response.close(); return readjson(result); //readjson(result); } } return false; } public static boolean readjson (String tmp) { //原数据 String data=tmp; //创建一个ObjectMapper对象 ObjectMapper objectMapper=new ObjectMapper(); //读取json数据,返回一个JsonNode对象指向根节点 try { JsonNode jsonNode=objectMapper.readTree(data); //利用JsonNode的path方法获取子节点,path方法的返回值也是JsonNode //JsonNode subNode=jsonNode.path("details");//得到details节点 //JsonNode对象的asInt(),asText()等方法用于获取值 System.out.println(jsonNode.path("status").asText());//返回字符串,韩超 System.out.println(jsonNode.path("msg").asText());//返回整形数据,18 System.out.println(jsonNode.path("data").asText());//返回长整型数据,1507030123 if(jsonNode.path("status").asText().equals("200")==true) return true; // //对于数组,可以使用size方法获取数组长度,get(index)获取索取为index的值 // for(int i=0;i<jsonNode.path("hobbies").size();i++) // System.out.println(jsonNode.path("hobbies").get(i).asText());//输出hobbies对应的数组 // // //获取details.birthday // SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd-HH-mm"); // sdf.setTimeZone(TimeZone.getTimeZone("GMT+8")); // System.out.println(sdf.format(new Date(subNode.path("birthday").asLong()*1000))); // // for(int i=0;i<subNode.path("extar").size();i++) // System.out.println(subNode.path("extar").get(i).asText());//输出details.extar对应的数组 } catch (JsonProcessingException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } return false; } } ``` 不負責任埋坑 比較關鍵的點就是 ```java if(StringUtils.isNotBlank(username)&& StringUtils.isNotBlank(password) && request.getRequestURL().toString().indexOf("login") >0) ``` 你路由規則 我還沒看 Zuul 應該是攔截不到除非你真的有這個服務,要不然就要寫成註冊中心了,那就會變成微服務版 這裡主要就是看我們的路由規則 ![](https://i.imgur.com/ZCpdIIz.png) 我們幾乎是攔下所有的eureka-provider 裡面的路徑,因為我們每一個服務要進行註冊, 怎麼換掉呢? 更改 驗證中心 post 那個路徑這個應該也沒什麼用 因為我們主要請求是先經過 Zuul,目前想不到 先用路徑判斷吧哈哈 實戰應該不能這樣用。 # 運行 登入成功 ![](https://i.imgur.com/UFlpt2i.png) ![](https://i.imgur.com/ZtlK1j3.png) 當然你也可以直接返回token Bearer eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE1Nzc1NTAxMTIsInVzZXJuYW1lIjoiamFjayJ9.WMYt2CPXuXtpem9Tb6VLG6l6IPd-Osfb73d3i-GaMAc 登入失敗 ![](https://i.imgur.com/HIFKwXl.png) 攜帶token 請求 ![](https://i.imgur.com/nKb8GfF.png) ![](https://i.imgur.com/eVlysWe.png) 攜帶錯誤token 請求 ![](https://i.imgur.com/sZBmOms.png) ![](https://i.imgur.com/5DcQ4jN.png) 最後又再亂測試 我們的認證中心是獨立服務要測試也只能這樣測試了 ![](https://i.imgur.com/WzVCmmH.png) ![](https://i.imgur.com/PnESMGz.png) 我買的ai 開發版記憶體只有 4g xd,這也考慮到很多因素像數據機傳輸速度也有關係,我相信這種業界應該不是用這種方法應該是走 rpc 或者 驗證邏輯不使用框架也說不定 ,不過考慮分布式的話,這又關連到 分布式鎖的問題了。

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