Spring Boot：计算页面视图-执行器

Question

我要求计算每个endpoint上的视图。其思想是为所有endpoint创建一个公共的请求计数映射，该映射应该基于动态输入的endpoint返回视图计数。

假设有人想检查http://localhost:8080/user/101上的视图计数。

null

我一直在讨论如何将动态请求发送到http://localhost:8080/actulator/metrics/http.server.requests？tag=uri:/user/101，并返回它的响应并获得计数值

@RequestMapping(path="/admin/count",method=RequestMethod.POST)
public JSONObject count(@RequestParam(name="url") final String url)//@PathVariable(name="url") final String url
{   
    String finalURL = "http://localhost:8080/actuator/metrics/http.server.requests?tag=uri:" + url + "";
    return sendRequestToURL(finalURL);  
}

@RequestMapping(path="/{finalURL}",method=RequestMethod.GET)
public JSONObject sendRequestToURL(@PathVariable("finalURL") String url)
{
    //How to return the response Here
}

这是直接激发URL时得到的结果

获取：http：//localhost:8080/acturet/metrics/http.server.requests？tag=uri:/user/101

  {
    "name": "http.server.requests",
    "description": null,
    "baseUnit": "seconds",
    "measurements": [
        {
            "statistic": "COUNT",
            "value": 1
        },
        {
            "statistic": "TOTAL_TIME",
            "value": 0.3229436
        },
        {
            "statistic": "MAX",
            "value": 0.3229436
        }
    ],
    "availableTags": [
        {
            "tag": "exception",
            "values": [
                "None"
            ]
        },
        {
            "tag": "method",
            "values": [
                "GET"
            ]
        },
        {
            "tag": "outcome",
            "values": [
                "SUCCESS"
            ]
        },
        {
            "tag": "status",
            "values": [
                "200"
            ]
        }
    ]
}

环境：

    `spring boot 2.1.2.RELEASE`
    <java.version>1.8</java.version>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-actuator</artifactId>
    </dependency>

Answer 1

因此您希望用/admin/count封装acture/metrics

Java中有多种调用Rest API的方法和库

我会加上一个最简单的

public JSONObject sendRequestToURL(@PathVariable("finalURL") String urlToRead)
{
      StringBuilder result = new StringBuilder();
      URL url = new URL(urlToRead);
      HttpURLConnection conn = (HttpURLConnection) url.openConnection();
      conn.setRequestMethod("GET");
      BufferedReader rd = new BufferedReader(new InputStreamReader(conn.getInputStream()));
      String line;
      while ((line = rd.readLine()) != null) {
         result.append(line);
      }
      rd.close();
      return new JSONObject(result.toString());  // org.json
}

String strJson = result.toString().replace("\\\"","'");
JSONObject jo = new JSONObject(strJson.substring(1,json.length()-1));
return jo;

编辑2：

我猜你的Spring保安已经到位了。

并且当您在内部调用API时,Spring将其视为需要身份验证的外部调用。

@Override
protected void configure(HttpSecurity http) throws Exception {
    http.csrf().disable().authorizeRequests()
     .antMatchers("/actuator*").permitAll()

     ...
}

<security:http  auto-config="true"  use-expressions="true"   >
    <security:intercept-url pattern="/actuator*" access="permitAll"/>

    ...
</security:http>

希望Spring security会忽略这个URL，您也不会得到登录表单。