打印请求头

Map<String,Object> headerMap = new HashMap<>();
Enumeration headerNames = request.getHeaderNames();

while (headerNames.hasMoreElements()) {
String headerName = headerNames.nextElement();
Enumeration headers = request.getHeaders(headerName);
while (headers.hasMoreElements()) {
String headerValue = headers.nextElement();
headerMap.put(headerName, headerValue);
}

}
请求头拦截器Interceptor
implements HandlerInterceptor 重写方法
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import java.lang.reflect.Field;
import java.util.Enumeration;

@Slf4j
public class MyInterceptor implements HandlerInterceptor {

@Override
public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
MyHeader myHeader = new MyHeader();
MyHeaderEnum[] myHeaderEnums = MyHeaderEnum.values();
for (MyHeaderEnum myHeaderEnum : myHeaderEnums){
String headerValue = request.getHeader(myHeaderEnum.getVal());
setMyHeaderFiled(myHeader,myHeaderEnum,headerValue);
}
log.info("myHeader:{}",myHeader);
SecurityUtils.setMyHeader(myHeader);
return true;
}

private void setMyHeaderFiled(MyHeader myHeader, MyHeaderEnum myHeaderEnum, String headerValue) throws Exception {
String filedName = myHeaderEnum.getVal();
Class<?> clazz = MyHeader.class;
Field field = clazz.getDeclaredField(filedName);
field.setAccessible(true);
field.set(myHeader,headerValue);

}

private String getRequestHeaders(HttpServletRequest request){
Enumeration headerNames = request.getHeaderNames();
StringBuilder headers = new StringBuilder();
while (headerNames.hasMoreElements()){
String headerName = headerNames.nextElement();
String headerValue = request.getHeader(headerName);
headers.append(headerName).append(": ").append(headerValue).append(", ");
}
if (headers.length() > 0){
headers.setLength(headers.length() - 2);
}
return headers.toString();
}
@Override
public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
HandlerInterceptor.super.postHandle(request, response, handler, modelAndView);
}

@Override
public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
SecurityUtils.clearMyHeader();
}
}

在配置类中注入拦截器

WebConfig
@Configuration
public class WebConfig implements WebMvcConfigurer {

@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(clientRequestInterceptor());
}

@Bean
@Scope(value = "request", proxyMode = ScopedProxyMode.TARGET_CLASS)
public MyHeader myHeader(){
return new MyHeader();
}

@Bean
public MyInterceptor clientRequestInterceptor(){
return new MyInterceptor();
}
}

请求头的枚举类、实体类

@Getter
@AllArgsConstructor
public enum MyHeaderEnum {
USERID("userId"),
ORGID("orgId");

private final String val;
}
存进线程池

public class SecurityUtils {
private static final ThreadLocal myHeaderThreadLocal = new ThreadLocal<>();

public static MyHeader getMyHeader(){
return myHeaderThreadLocal.get();
}

public static void setMyHeader(MyHeader myHeader){
myHeaderThreadLocal.set(myHeader);
}

public static void clearMyHeader(){
myHeaderThreadLocal.remove();
}
}