如何添加HTTP生命周期中间件处理程序到spring？

Question

我有一个CustomerController.java：

package com.satisfeet.http; 

import java.util.ArrayList; 
import java.util.List; 

import org.springframework.beans.factory.annotation.Autowired; 
import org.springframework.http.HttpStatus; 
import org.springframework.http.ResponseEntity; 
import org.springframework.web.bind.annotation.PathVariable; 
import org.springframework.web.bind.annotation.RestController; 
import org.springframework.web.bind.annotation.RequestBody; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 

import com.satisfeet.core.model.Address; 
import com.satisfeet.core.model.Customer; 
import com.satisfeet.core.service.CustomerService; 

@RestController 
@RequestMapping("/customers") 
public class CustomerController { 

    @Autowired 
    private CustomerService service; 

    @RequestMapping(method = RequestMethod.GET) 
    public Iterable<Customer> index() { 
     return this.service.list(); 
    } 

    @RequestMapping(method = RequestMethod.POST) 
    public Customer create(@RequestBody Customer customer) { 
     this.service.create(customer); 

     return customer; 
    } 

    @RequestMapping(method = RequestMethod.GET, value = "/{id}") 
    public Customer show(@PathVariable Integer id) { 
     return this.service.show(id); 
    } 

    @RequestMapping(method = RequestMethod.PUT, value = "/{id}") 
    public void update(@PathVariable Integer id, @RequestBody Customer customer) { 
     this.service.update(id, customer); 
    } 

    @RequestMapping(method = RequestMethod.DELETE, value = "/{id}") 
    public void destroy(@PathVariable Integer id) { 
     this.service.delete(id); 
    } 

} 

和ExceptionController.java：

package com.satisfeet.http; 

import org.springframework.http.HttpStatus; 
import org.springframework.http.ResponseEntity; 
import org.springframework.web.bind.annotation.ControllerAdvice; 
import org.springframework.web.bind.annotation.ExceptionHandler; 
import org.springframework.web.bind.annotation.ResponseStatus; 

import com.satisfeet.core.exception.NotFoundException; 

@ControllerAdvice 
public class ExceptionController { 

    @ExceptionHandler(NotFoundException.class) 
    public ResponseEntity notFoundError() { 
     return new ResponseEntity(HttpStatus.NOT_FOUND); 
    } 

} 

我现在想添加某种HTTP请求 - 响应中间件被执行在写入响应之前，写入json的HTTP状态代码：

HTTP/1.1 404 OK 
Connection: close 
Content-Type: application/json 

{"error":"not found"} 

我知道如何将HttpStatus转换为String，但我不知道我在哪里可以在全球范围内使用@ControllerAdvice。

那么如何注册一个可以访问响应对象的全局处理程序？

Answer 1

我觉得你在找什么是春天Interceptor。

请检查这个tutorial这是描述如何使用拦截器。

和检查弹簧文档Intercepting requests with a HandlerInterceptor。

最后检查这个答案here

希望有所帮助。