用springboot+zuul做一个网关
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业务：主要是做一个灰度的网关，请求头target为1时走http://localhost:9090/test/的灰度版本
其他走http://localhost:8080/test/ 的生产版本
1 创建springboot项目
2 在pom.xml加入
3 application.properties中
zuul.host.socket-timeout-millis=60000
zuul.host.connect-timeout-millis=10000
zuul.routes.test.url=http://localhost:8080/test/
zuul.routes.test.path=/test/**
zuul.routes.gray.url=http://localhost:9090/test/
4 启动类上加注解@EnableZuulProxy
5 网关实体类
@Component
public class GrayFilter extends ZuulFilter{
@Autowired
private Environment environment;
@Overfide
public boolean shouldFilter(){
//获取当前request,获得请求头中的target,如果这个方法返回false,下面的run()方法将不会执行
HttpServletRequest request = RequestContext.getCurrentContext().getRequest();
return null != request.getHeader("target");
}
@Override
public Object run(){
HttpServletRequest request = RequestContext.getCurrentContext().getRequest();
String target = request.getHeader("target");
if("target".equals(target)){
try{
RequestContext.RequestContext.getCurrentContext().setRouteHost(new URL(environment.getProperty("zuul.routes.gray.url")));
} catch (Exception e){
}
}
return null;
}
@Override
public String filterType(){
return FilterConstants.ROUTE_TYPE;
}
@Override
public int filterOrder(){
return FilterConstants.SIMPLE_HOST_ROUTING_FILTER_ORDER-1;
}
}