I want to use Spring cloud function so I started it with as http end point. It works great but how do I use it with path variable. Say I want to make an end point like this: http://localhost:8080/myFunction/{id}?

我想使用Spring的云函数，所以我从http端点开始。它工作得很好，但如何将其与PATH变量一起使用。假设我想要这样做一个终点：http://localhost:8080/myFunction/{id}？

How to accomplish it via Spring cloud function

如何通过Spring云函数来实现

I am not sure where did you get org.springframework.cloud.function.web.FunctionRequest. It does not exist.
Also, why do you need MyFunctionController? I am struggling to understand what you are trying to accomplish. MyFunction is all you need to access http://localhost:8080/myFunction/123

我不知道你是从哪里弄到org.springframework.cloud.function.web.FunctionRequest.的它并不存在。另外，您为什么需要MyFunctionController？我正在努力理解你想要实现的目标。我的功能是您访问http://localhost:8080/myFunction/123所需的全部功能

1. Assuming you are using Spring with Maven and a pom.xml specified you can include the dependency for Spring Cloud Function and Spring Web:

   
   

   <dependencies>
       <dependency>
           <groupId>org.springframework.cloud</groupId>
           <artifactId>spring-cloud-function-web</artifactId>
       </dependency>
   </dependencies>
   

   
   

2. Then try creating or altering your bean. This would create a simple Function that takes a String input (the path variable id) and returns a String response:

   
   

   import java.util.function.Function;
   import org.springframework.stereotype.Component;
   
   @Component
   public class MyFunction implements Function<String, String> {
       @Override
       public String apply(String id) {
           // Your function logic here
           return "Received ID: " + id;
       }
   }
   

   
   

3. Next try creating or altering your controller to expose this function as an HTTP endpoint with a path variable. You can use the @RestController and @RequestMapping annotations for this. Below we injected the FunctionRequest for your MyFunction bean and create a GET mapping that accepts a path variable {id}. When a request is made to http://localhost:8080/myFunction/{id}, the handleRequest method is called, and it invokes your function with the provided id:

   
   

   import org.springframework.beans.factory.annotation.Autowired;
   import org.springframework.cloud.function.web.FunctionRequest;
   import org.springframework.web.bind.annotation.*;
   
   @RestController
   @RequestMapping("/myFunction")
   public class MyFunctionController {
       @Autowired
       private FunctionRequest<MyFunction> functionRequest;
   
       @GetMapping("/{id}")
       public String handleRequest(@PathVariable String id) {
           return functionRequest.apply(id);
       }
   }
   

   
   

4. Finally try running your Spring Boot application, and you can access your function using the endpoint, http://localhost:8080/myFunction/123.

Hope this helps!

希望这个能帮上忙！