SpringBoot-打印请求的入参和出参

在Spring Boot中，你可以使用HandlerInterceptor接口来打印请求的入参和出参。具体步骤如下：

1. 创建一个实现了HandlerInterceptor接口的类。
2. 在preHandle方法中打印请求入参。
3. 使用ResponseBodyAdvice接口打印响应出参。

以下是实现的示例代码：

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
 
@Component
public class LogInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("请求入参：" + request.getParameterMap());
        return true;
    }
 
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        // 这里可以处理ModelAndView相关逻辑
    }
 
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        // 这里可以处理异常逻辑
    }
}

然后需要将拦截器注册到Spring MVC的拦截器链中：

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
@Configuration
public class WebConfig implements WebMvcConfigurer {
    @Autowired
    private LogInterceptor logInterceptor;
 
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(logInterceptor);
    }
}

对于出参的打印，你可以创建一个实现了ResponseBodyAdvice的类：

import org.springframework.core.MethodParameter;
import org.springframework.http.MediaType;
import org.springframework.http.ResponseEntity;
import org.springframework.http.server.ServerHttpRequest;
import org.springframework.http.server.ServerHttpResponse;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.servlet.mvc.method.annotation.ResponseBodyAdvice;
 
@ControllerAdvice
public class ResponseAdvice implements ResponseBodyAdvice<Object> {
    @Override
    public boolean supports(MethodParameter returnType, Class converterType) {
        return true;
    }
 
    @Override
    public Object b