springboot使用zuul

##配置pom

1<parent>
2		<groupId>org.springframework.boot</groupId>
3		<artifactId>spring-boot-starter-parent</artifactId>
4		<version>1.3.5.RELEASE</version>
5		<relativePath /> <!-- lookup parent from repository -->
6	</parent>
7<dependencyManagement>
8		<dependencies>
9			<dependency>
10				<groupId>org.springframework.cloud</groupId>
11				<artifactId>spring-cloud-dependencies</artifactId>
12				<version>Brixton.SR3</version>
13				<type>pom</type>
14				<scope>import</scope>
15			</dependency>
16		</dependencies>
17	</dependencyManagement>
18

##zuul依赖

1<dependency>
2			<groupId>org.springframework.cloud</groupId>
3			<artifactId>spring-cloud-starter-zuul</artifactId>
4		</dependency>

##启用zuul

1@SpringBootApplication
2@EnableZuulProxy
3public class DemoApplication {
4
5	public static void main(String[] args) {
6		SpringApplication.run(DemoApplication.class, args);
7	}
8}

##application.yaml

1zuul:
2  routes:
3    demo:
4      path: /demo/**
5      url: forward:/demo
6    product:
7      path: /product/**
8      stripPrefix: false
9
10product:
11  ribbon:
12    listOfServers: 192.168.99.100:8080
13
14ribbon:
15  eureka:
16    enabled: false

其中，使用listOfServers可以配置外部服务的多个负载均衡；使用forward可以forward到外部地址，也可以forward内部的相对地址。 ##配置filter

1@Component
2public class DemoFilter extends ZuulFilter {
3
4    private static final Logger LOGGER = LoggerFactory.getLogger(DemoFilter.class);
5
6    @Override
7    public String filterType() {
8        return "pre";
9    }
10
11    @Override
12    public int filterOrder() {
13        return 0;
14    }
15
16    @Override
17    public boolean shouldFilter() {
18        return true;
19    }
20
21    @Override
22    public Object run() {
23        RequestContext ctx = RequestContext.getCurrentContext();
24        HttpServletRequest request = ctx.getRequest();
25        String token = request.getHeader("token");
26        if(StringUtils.isEmpty(token)){
27            requestContext.setResponseStatusCode(HttpStatus.UNAUTHORIZED.value());
28            requestContext.setSendZuulResponse(false);
29            throw new RuntimeException("UNAUTHORIZED");
30        }
31        return null;
32    }
33}

##docs

• zuul-demo