ansteel-biz/src/main/java/com/iailab/module/ansteel/config/FeignTokenInterceptor.java

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package com.iailab.module.ansteel.config;

import com.iailab.module.ansteel.util.token.IailabClient;
import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpHeaders;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

@Configuration
public class FeignTokenInterceptor implements RequestInterceptor {

    @Autowired
    private IailabClient iailabClient;

    @Override
    public void apply(RequestTemplate requestTemplate) {
        // 从当前请求上下文中获取Token
        String token = getTokenFromCurrentRequest();

        if (token == null) {
            // 如果没有获取到Token，从system-server中获取token
            token = iailabClient.getToken();
            if (token!= null) {
                requestTemplate.header(HttpHeaders.AUTHORIZATION, token);
            }
            Long tenantId = iailabClient.getTenantId();
            if (tenantId != null) {
                requestTemplate.header("tenant-id", String.valueOf(tenantId));
            }
        }
    }

    private String getTokenFromCurrentRequest() {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        if (attributes!= null) {
            return attributes.getRequest().getHeader(HttpHeaders.AUTHORIZATION);
        }
        return null;
    }
}