SpringCloud-Zuul实现路由和服务过滤
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2022-07-12 18:52:47
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一、maven配置
<groupId>com.wk.sc</groupId>
<artifactId>springcloud-demo</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<java.version>1.8</java.version>
<spring-cloud.version>Greenwich.SR1</spring-cloud.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.4.RELEASE</version>
<relativePath/>
</parent>
<dependencies>
<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>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
二、application.yml配置
server:
port: 8769
spring:
application:
name: service-zuul
eureka:
client:
service-url:
defaultZone: http://localhost:8761/eureka/
# 配置路由策略
zuul:
routes:
api-a:
path: /api-a/** # 路由规则
serviceId: service-ribbon # 匹配服务
api-b:
path: /api-b/**
serviceId: service-feign
三、启动类
@EnableZuulProxy //开启路由代理
@EnableEurekaClient
@EnableDiscoveryClient
@SpringBootApplication
public class ServiceZuulApplication {
public static void main(String[] args) {
SpringApplication.run(ServiceZuulApplication.class, args);
}
}
四、路由测试
http://localhost:8769/api-a/hi?name=zhangsan
http://localhost:8769/api-b/hi?name=zhangsan
根据路由策略配置请求不同的服务
五、过滤实现
/**
* 自定义zuul过滤规则
*
*/
@Component
public class MyFilter extends ZuulFilter {
private static final Logger logger = LoggerFactory.getLogger(MyFilter.class);
/**
* 定义过滤周期类型
* 在zuul中定义了4中过滤周期类型:
* pre:路由前
* routing:路由时
* post:路由后
* error:发生错误时调用
*
* @return
*/
@Override
public String filterType() {
return "pre";
}
/**
* 过滤顺序
*
* @return
*/
@Override
public int filterOrder() {
return 0;
}
/**
* 根据条件定义是否需要过滤:
* true:需要过滤
* false:不需要
*
* @return
*/
@Override
public boolean shouldFilter() {
//需要过滤生效,此处需要返回true
return true;
}
/**
* 过滤器具体实现,可以结合业务需求进行复杂的实现
*
* @return
* @throws ZuulException
*/
@Override
public Object run() throws ZuulException {
RequestContext requestContext = RequestContext.getCurrentContext();
HttpServletRequest request = requestContext.getRequest();
logger.info("请求信息,方法[{}],URL[{}]", request.getMethod(), request.getRequestURL().toString());
//模拟token校验
String token = request.getParameter("token");
if (token == null || token.length() == 0){
//token校验失败返回401
requestContext.setSendZuulResponse(false);
requestContext.setResponseStatusCode(401);
try {
requestContext.getResponse().getWriter().write("token 为空");
} catch (IOException e) {
e.printStackTrace();
}
}else{
logger.info("校验通过");
}
return null;
}
}
六、过滤测试
分别带token和不带token请求查看效果
转载于:https://www.jianshu.com/p/561a2e48e0e9
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