zuul 使用
采用路由可以将请求引导向不同的服务提供方， 例如：
http://localhost:8769/api-a/hi?name=jav&token=java 请求的是 service-ribbon 服务
http://localhost:8769/api-b/hi?name=jav&token=java 请求的是 service-feign 服务
需要启动eureka-server, eureka-client , service-feign, service-ribbon, eureka-zuul 等服务
@SpringBootApplication
@EnableZuulProxy
@EnableEurekaClient
@EnableDiscoveryClient
public class ServiceZuulApplication {
public static void main(String[] args) {
SpringApplication.run( ServiceZuulApplication.class, args );
}
}
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
</dependencies>
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8761/eureka/
server:
port: 8769
spring:
application:
name: service-zuul
zuul:
routes:
api-a:
path: /api-a/**
serviceId: service-ribbon
api-b:
path: /api-b/**
serviceId: service-feign
zuul 过滤器使用
package com.example.demo;
import javax.servlet.http.HttpServletRequest;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;
import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
@Component
public class MyFilter extends ZuulFilter {
private static Logger log = LoggerFactory.getLogger(MyFilter.class);
@Override
public String filterType() {
return "pre";
}
@Override
public int filterOrder() {
return 0;
}
@Override
public boolean shouldFilter() {
return true;
}
@Override
public Object run() {
RequestContext ctx = RequestContext.getCurrentContext();
HttpServletRequest request = ctx.getRequest();
log.info(String.format("%s >>> %s", request.getMethod(), request.getRequestURL().toString()));
Object accessToken = request.getParameter("token");
if(accessToken == null) {
log.warn("token is empty");
ctx.setSendZuulResponse(false);
ctx.setResponseStatusCode(401);
try {
ctx.getResponse().getWriter().write("token is empty");
}catch (Exception e){}
return null;
}
log.info("ok");
return null;
}
}