springcloud脚手架搭建(四)---zuul网关搭建

分手后的思念是犯贱 2022-06-02 09:36 228阅读 0赞

1.引入pom.xml

<?xml version="1.0" encoding="UTF-8"?>
    <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
        <modelVersion>4.0.0</modelVersion>
    
        <groupId>com.gameley</groupId>
        <artifactId>gateway-service</artifactId>
        <version>1.0.0-SNAPSHOT</version>
        <packaging>jar</packaging>
    
        <name>gateway-service</name>
        <description>Demo project for Spring Boot</description>
    
        <parent>
            <groupId>com.gameley</groupId>
            <artifactId>adplatform</artifactId>
            <version>1.0.0-SNAPSHOT</version>
        </parent>
    
    
    
        <dependencies>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-eureka</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-zuul</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-web</artifactId>
                <exclusions>
                    <exclusion>
                        <groupId>org.springframework.boot</groupId>
                        <artifactId>spring-boot-starter-tomcat</artifactId>
                    </exclusion>
                </exclusions>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-jetty</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-actuator</artifactId>
            </dependency>
            
                
                
    
            
            
                
                
            
            <dependency>
                <groupId>io.jsonwebtoken</groupId>
                <artifactId>jjwt</artifactId>
                <version>0.6.0</version>
            </dependency>
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>fastjson</artifactId>
                <version>1.2.33</version>
            </dependency>
            <dependency>
                <groupId>org.projectlombok</groupId>
                <artifactId>lombok</artifactId>
                <version>1.16.14</version>
                <scope>provided</scope>
            </dependency>
            <dependency>
                <groupId>com.gameley</groupId>
                <artifactId>gameley-common</artifactId>
                <version>1.0</version>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-starter-feign</artifactId>
            </dependency>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-aop</artifactId>
            </dependency>
    
            
                
                
                
            
    
        </dependencies>
    
        <build>
            <plugins>
                <plugin>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-maven-plugin</artifactId>
                </plugin>
            </plugins>
        </build>
    
    
    </project>

2.配置zuul：

zuul:
      routes:
        api-a:
          path: /user-api/**
          serviceId: user-service
        api-b:
              path: /gameley-auth/**
              serviceId: gameley-auth
      prefix: /api #为zuul设置一个公共的前缀

3.创建springboot启动类

package com.gameley;
    
    import org.springframework.boot.SpringApplication;
    import org.springframework.boot.autoconfigure.SpringBootApplication;
    import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
    import org.springframework.cloud.netflix.feign.EnableFeignClients;
    import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
    import org.springframework.context.annotation.Bean;
    import org.springframework.web.cors.CorsConfiguration;
    import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
    import org.springframework.web.filter.CorsFilter;
    
    @SpringBootApplication
    @EnableZuulProxy
    @EnableEurekaClient
    @EnableFeignClients
    public class GatewayServiceApplication {
    
        public static void main(String[] args) {
            SpringApplication.run(GatewayServiceApplication.class, args);
        }
    
        /** * 解决跨域问题 * @return */
        @Bean
        public CorsFilter corsFilter() {
            final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
            final CorsConfiguration config = new CorsConfiguration();
            config.setAllowCredentials(true); // 允许cookies跨域
            config.addAllowedOrigin("*");// #允许向该服务器提交请求的URI，*表示全部允许
            config.addAllowedHeader("*");// #允许访问的头信息,*表示全部
            config.setMaxAge(18000L);// 预检请求的缓存时间（秒），即在这个时间段里，对于相同的跨域请求不会再预检了
            config.addAllowedMethod("*");// 允许提交请求的方法，*表示全部允许，也可以单独设置GET、PUT等
            config.addAllowedMethod("HEAD");
            config.addAllowedMethod("GET");// 允许Get的请求方法
            config.addAllowedMethod("PUT");
            config.addAllowedMethod("POST");
            config.addAllowedMethod("DELETE");
            config.addAllowedMethod("PATCH");
            source.registerCorsConfiguration("/**", config);
            return new CorsFilter(source);
        }
    }

4.配置登录拦截器

package com.gameley.filter;
    
    import com.alibaba.fastjson.JSON;
    import com.gameley.bean.Audience;
    import com.gameley.bean.JwtInfo;
    
    import com.gameley.common.constant.RestCodeConstants;
    import com.gameley.common.msg.auth.TokenErrorResponse;
    
    import com.gameley.feign.ElementService;
    import com.gameley.utils.JwtHelper;
    import com.netflix.zuul.ZuulFilter;
    import com.netflix.zuul.context.RequestContext;
    import io.jsonwebtoken.Claims;
    import lombok.extern.slf4j.Slf4j;
    import org.springframework.beans.factory.annotation.Autowired;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.boot.context.properties.EnableConfigurationProperties;
    import org.springframework.stereotype.Component;
    
    import javax.servlet.http.HttpServletRequest;
    
    @EnableConfigurationProperties(Audience.class)
    @Slf4j
    @Component
    public class loginfiler extends ZuulFilter { 
    
        @Autowired
        ElementService iUserService;
        @Override
        public String filterType() {
            return "pre";
        }
    
        @Override
        public int filterOrder() {
            return 0;
        }
        @Value("${zuul.prefix}")
        private String zuulPrefix;
        @Value("${gate.ignore.startWith}")
        private String startWith;
    
        @Autowired
        private  Audience audience;
        @Override
        public boolean shouldFilter() {
            return true;
        }
    
        @Override
        public Object run() {
            RequestContext ctx = RequestContext.getCurrentContext();
            HttpServletRequest request = ctx.getRequest();
            final String requesturi=request.getRequestURI().substring(zuulPrefix.length());
            String token=request.getHeader("token");
            String client=request.getHeader("client");
            //不进行拦截的地址
            if(isStartWith(requesturi)){
                return null;
            }
            /** * 未登录，踢出 */
            if(token==null||client==null){
                ctx.setSendZuulResponse(false);// 过滤该请求，不对其进行路由
                ctx.setResponseStatusCode(RestCodeConstants.TOKEN_ERROR_CODE);// 返回错误码
                ctx.setResponseBody("fail token");// 返回错误内容
                ctx.set("isSuccess", false);
                return null;
            }
    
            try {
                JwtInfo jwtInfo=new JwtInfo();
                jwtInfo.setToken(token);
                jwtInfo.setClientId(audience.getClientId());
                jwtInfo.setExpiresSecond(audience.getExpiresSecond());
                jwtInfo.setName(audience.getName());
                JwtHelper jwtHelper=new JwtHelper();
                jwtHelper.setJwtInfo(jwtInfo);
                Claims claims = jwtHelper.parseJWT(token, audience.getBase64Secret());
                Claims clientClaims = jwtHelper.parseJWT(client, audience.getClient64Secret());
    
    
                if(claims==null||clientClaims==null){
                    /** * 暂不使用后台自动刷新，改为前端页面定时自动拉取刷新 */
                    setFailedRequest("token过期", RestCodeConstants.TOKEN_ERROR_CODE);
                    return null;
    // String refreshToken=jwtInfo.getToken();
    // ctx.addZuulRequestHeader("token",refreshToken);
    // ctx.addZuulResponseHeader("token",refreshToken);
                }else {
    
                    ctx.addZuulRequestHeader("token",token);
                }
    
    
            } catch (Exception e) {
                setFailedRequest(JSON.toJSONString(new TokenErrorResponse(e.getMessage())), RestCodeConstants.TOKEN_ERROR_CODE);
                return null;
            }
    
    
            return null;
        }
    
    
        /** * URI是否以什么打头 * * @param requestUri * @return */
        private boolean isStartWith(String requestUri) {
            boolean flag = false;
            for (String s : startWith.split(",")) {
                if (requestUri.startsWith(s)) {
                    return true;
                }
            }
            return flag;
        }
    
        /** * 网关抛异常 * * @param body * @param code */
        private void setFailedRequest(String body, int code) {
    
            log.debug("Reporting error ({}): {}", code, body);
            RequestContext ctx = RequestContext.getCurrentContext();
            ctx.setResponseStatusCode(code);
            if (ctx.getResponseBody() == null) {
                ctx.setResponseBody(body);
                ctx.setSendZuulResponse(false);
            }
        }
    }

5.备注：这里登录使用的为jwt-token（[https://www.jianshu.com/p/576dbf44b2ae][https_www.jianshu.com_p_576dbf44b2ae]）

[https_www.jianshu.com_p_576dbf44b2ae]: https://www.jianshu.com/p/576dbf44b2ae