import feign.RequestInterceptor;
import feign.RequestTemplate;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;
import javax.servlet.http.HttpServletRequest;
/**
 * Feign配置
 * 使用FeignClient進(jìn)行服務(wù)間調(diào)用，傳遞headers信息
 */
@Configuration
public class FeignConfig implements RequestInterceptor {
    @Override
    public void apply(RequestTemplate requestTemplate) {
        ServletRequestAttributes attributes = (ServletRequestAttributes)RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        //添加token
        requestTemplate.header("Access-Token", request.getHeader("Access-Token"));
    }
}

import org.apache.commons.lang3.StringUtils;
import javax.servlet.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletRequestWrapper;
import java.io.IOException;
/**
 * 每次請(qǐng)求過(guò)濾器攔截加Token
 */
public class AddTokenFilter implements Filter {
    /**
     * superAdmin
     */
    private static final String DEFAULT_TOKEN = "你的token";
    private String profilesActive;
    public AddTokenFilter(String profilesActive) {
        super();
        this.profilesActive = profilesActive;
    }
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {
    }
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
     //判斷是開(kāi)發(fā)模式（dev）還是生產(chǎn)壞境（pro）
     //如果不是開(kāi)發(fā)壞境，不做任何操作，是開(kāi)發(fā)壞境，往本地測(cè)試的request加請(qǐng)求頭
        if (profilesActive == null || !EnumEnvType.DEV.toString().equalsIgnoreCase(profilesActive)) {
            filterChain.doFilter(servletRequest, servletResponse);
            return;
        }
        filterChain.doFilter(new CustomeizedRequest((HttpServletRequest) servletRequest), servletResponse);
    }
    @Override
    public void destroy() {
    }
//繼承HttpServletRequestWrapper ，重寫(xiě)getHeader獲取請(qǐng)求頭的值
    private class CustomeizedRequest extends HttpServletRequestWrapper {
        /**
         * Constructs a request object wrapping the given request.
         *
         * @param request
         * @throws IllegalArgumentException if the request is null
         */
        public CustomeizedRequest(HttpServletRequest request) {
            super(request);
        }
        @Override
        public String getHeader(String name) {
            if (!Constant.HTTP_HEADER_ACCESS_TOKEN.equalsIgnoreCase(name)) {
                return super.getHeader(name);
            }
            String token = super.getHeader(name);
            return StringUtils.isNotBlank(token) ? token : DEFAULT_TOKEN;
        }
    }
}

import com.alibaba.fastjson.serializer.SerializerFeature;
import com.alibaba.fastjson.support.config.FastJsonConfig;
import com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter;
import com.uhope.rl.watersource.filter.AddTokenFilter;
import com.uhope.rl.watersource.filter.ServiceFilter;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.autoconfigure.web.HttpMessageConverters;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.converter.HttpMessageConverter;
import org.springframework.web.servlet.config.annotation.ResourceHandlerRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
import java.nio.charset.Charset;
/**
 * Spring MVC 配置
 * @author chenbin on 2017/12/25
 * @version 3.0.0
 */
@Configuration
public class WebMvcConfig extends WebMvcConfigurerAdapter {
    private final Logger logger = LoggerFactory.getLogger(WebMvcConfig.class);
    /**
     * 當(dāng)前激活的配置文件
     */
    @Value("${spring.profiles.active}")
    private String env;
    /**
     * 解決路徑資源映射問(wèn)題
     *
     * @param registry
     */
    @Override
    public void addResourceHandlers(ResourceHandlerRegistry registry) {
        registry.addResourceHandler("swagger-ui.html").addResourceLocations("classpath:/META-INF/resources/");
        registry.addResourceHandler("/webjars/**").addResourceLocations("classpath:/META-INF/resources/webjars/");
        registry.addResourceHandler("/static/**").addResourceLocations("classpath:/static/");
    }
    /**
     * 使用fastJson代替Jackjson解析JSON數(shù)據(jù)
     *
     * @return
     */
    @Bean
    public HttpMessageConverters fastJsonHttpMessageConverters() {
        FastJsonHttpMessageConverter fastConverter = new FastJsonHttpMessageConverter();
        FastJsonConfig fastJsonConfig = new FastJsonConfig();
        /*
         * 轉(zhuǎn)換為JSON字符串，默認(rèn):
         * WriteNullListAsEmpty    List字段如果為null,輸出為[],而非null
         * WriteNullStringAsEmpty  字符類型字段如果為null,輸出為”“,而非null
         * WriteMapNullValue       是否輸出值為null的字段,默認(rèn)為false
         */
        fastJsonConfig.setSerializerFeatures(SerializerFeature.WriteNullListAsEmpty, SerializerFeature.WriteNullStringAsEmpty, SerializerFeature.WriteMapNullValue, SerializerFeature.WriteDateUseDateFormat);
        fastConverter.setFastJsonConfig(fastJsonConfig);
        fastConverter.setDefaultCharset(Charset.forName("UTF-8"));
        HttpMessageConverter<?> converter = fastConverter;
        return new HttpMessageConverters(converter);
    }
    /**
     * 這個(gè)Filter 解決頁(yè)面跨域訪問(wèn)問(wèn)題
     */
    @Bean
    public FilterRegistrationBean omsFilter() {
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(new ServiceFilter());
        registration.addUrlPatterns("/*");
        registration.setName("MainFilter");
        registration.setAsyncSupported(true);
        registration.setOrder(1);
        return registration;
    }
    /**
     * 這個(gè)Filter 添加token
     */
    @Bean
    public FilterRegistrationBean addTokenFilter(){
        FilterRegistrationBean registration = new FilterRegistrationBean();
        registration.setFilter(new AddTokenFilter(env));
        registration.addUrlPatterns("/*");
        registration.setName("addTokenFilter");
        registration.setAsyncSupported(true);
        registration.setOrder(2);
        return registration;
    }
}

/**
 * Feign請(qǐng)求攔截器配置.
 *
 * @author linzp
 * @version 1.0.0
 * @date 2021/4/16 21:19
 */
@Configuration
public class FeignInterceptorConfig implements RequestInterceptor {
    public FeignInterceptorConfig() {}
    @Override
    public void apply(RequestTemplate template) {
        ServletRequestAttributes attributes = (ServletRequestAttributes) RequestContextHolder.getRequestAttributes();
        HttpServletRequest request = attributes.getRequest();
        //設(shè)置token到請(qǐng)求頭
        template.header(ConstantCommon.HEADER_TOKEN_KEY, request.getHeader(ConstantCommon.HEADER_TOKEN_KEY));
    }
}