zuul超时重试简单使用
网关部分重要的依赖
<dependency>
<groupId>org.springframework.retry</groupId>
<artifactId>spring-retry</artifactId>
</dependency>
@EnableRetry开启重试注解
#hystrix超时设置 hystrix.command.default.execution.isolation.thread.timeoutInMillisceconds=20000 ribbon.ConnectTimeout=5000 ribbon.ReadTimeout=5000 #重试次数 ribbon.MaxAutoRetries=1 #寻找一个服务重试 ribbon.MaxAutoRetriesNextServer=1 ribbon.OkToRetryOnAllOperations=true
调用http://127.0.0.1:1005/product-service/product/testFirst/777服务
这里的网关没有自定义超时，所以使用了默认配置
这里的超时可以如图设置
@RestController
@RequestMapping("/product")
@Slf4j
public class ProductController {
@GetMapping("/getProduct/{id}")
public String selectProduct(@PathVariable String id){
log.info("【调用服务者入参】:{}",id);
return "查询到的主键返回"+id;
}
@GetMapping("/testFirst/{id}")
public String testFirst(@PathVariable Integer id){
log.info("【调用服务者入参】:{}",id);
try {
Thread.sleep(4000L);
} catch (InterruptedException e) {
e.printStackTrace();
}
StringBuilder stringBuilder=new StringBuilder();
stringBuilder.append("qwe");
stringBuilder.append("-");
stringBuilder.append(id);
return stringBuilder.toString();
}
}
zuul网关配置超时设置后，请求的数据不是很快返回回来，会稍微等会
本次的测试中需要一个注册中心，一个zuul网关配置，一个服务提供者
父类pom
<?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>org.example</groupId>
<artifactId>zuul-aprent</artifactId>
<packaging>pom</packaging>
<version>1.0-SNAPSHOT</version>
<modules>
<module>eureka-service</module>
<module>prodoct-service</module>
<module>order-service</module>
<module>zuul-service</module>
<module>zuul-one</module>
<module>zuul-two</module>
<module>zuul-three</module>
</modules>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.2.5.RELEASE</version>
</parent>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Hoxton.SR3</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>com.alibaba.cloud</groupId>
<artifactId>spring-cloud-alibaba-dependencies</artifactId>
<version>2.1.0.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<plugins>
<!--编译插件-->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<source>1.8</source>
<target>1.8</target>
<encoding>utf-8</encoding>
</configuration>
</plugin>
<!--打包插件-->
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
eureka完整项目
<?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">
<parent>
<artifactId>zuul-aprent</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.eureka</groupId>
<artifactId>eureka-service</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-server</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<finalName>eureka</finalName>
</build>
</project>
server.port=8761
spring.application.name=eureka-service
eureka.instance.hostname=localhost
eureka.client.service-url.defaultZone=http://localhost:8761/eureka
eureka.client.register-with-eureka=false
eureka.client.fetch-registry=false
logging.level.com.eureka=info
logging.level.web=info
spring.devtools.add-properties=false
package com.eureka;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;
/**
* @author yourheart
* @Description
* @create 2022-04-20 21:17
*/
@SpringBootApplication
@EnableEurekaServer
public class EurekaApplication {
public static void main(String[] args) {
SpringApplication.run(EurekaApplication.class,args);
}
}
zuul网关完整项目
<?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">
<parent>
<artifactId>zuul-aprent</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.zuul</groupId>
<artifactId>zuul-three</artifactId>
<dependencies>
<!--zuul依赖-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-zuul</artifactId>
</dependency>
<!--lombok依赖-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.16</version>
</dependency>
<!--客户端-->
<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-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.retry</groupId>
<artifactId>spring-retry</artifactId>
</dependency>
</dependencies>
</project>
server.port=1005
spring.application.name=zuul-three
#注册到eureka注册中心,如果是注册到集群就用逗号连接多个，单实例写上一个就好
eureka.client.service-url.defaultZone=http://localhost:8761/eureka
logging.level.com.zuul=debug
logging.level.web=debug
spring.devtools.add-properties=false
#hystrix超时设置
hystrix.command.default.execution.isolation.thread.timeoutInMillisceconds=20000
ribbon.ConnectTimeout=5000
ribbon.ReadTimeout=5000
#重试次数
ribbon.MaxAutoRetries=1
#寻找一个服务重试
ribbon.MaxAutoRetriesNextServer=1
ribbon.OkToRetryOnAllOperations=true
package com.zuul.failback;
import org.springframework.cloud.netflix.zuul.filters.route.FallbackProvider;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.MediaType;
import org.springframework.http.client.ClientHttpResponse;
import org.springframework.stereotype.Component;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.nio.charset.Charset;
/**
* @author yourheart
* @Description
* @create 2022-05-26 23:36
*/
@Component
public class ProductProviderFallback implements FallbackProvider {
@Override
public String getRoute() {
return "order-service";
}
@Override
public ClientHttpResponse fallbackResponse(String route, Throwable cause) {
ClientHttpResponse response = new ClientHttpResponse() {
@Override
public HttpHeaders getHeaders() {
HttpHeaders headers = new HttpHeaders();
MediaType mediaType = new MediaType("application", "json", Charset.forName("utf-8"));
headers.setContentType(mediaType);
return headers;
}
@Override
public InputStream getBody() throws IOException {
ByteArrayInputStream inputStream = new ByteArrayInputStream("订单服务不可用".getBytes());
return inputStream;
}
@Override
public HttpStatus getStatusCode() throws IOException {
return HttpStatus.INTERNAL_SERVER_ERROR;
}
@Override
public int getRawStatusCode() throws IOException {
return this.getStatusCode().value();
}
@Override
public String getStatusText() throws IOException {
return this.getStatusCode().getReasonPhrase();
}
@Override
public void close() {
}
};
return response;
}
}
package com.zuul;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.retry.annotation.EnableRetry;
/**
* @author yourheart
* @Description
* @create 2022-05-26 23:15
*/
@SpringBootApplication
//开启zuul注解
@EnableZuulProxy
//开启重试注解
@EnableRetry
public class ZuulThreeApplication {
public static void main(String[] args) {
SpringApplication.run(ZuulThreeApplication.class,args);
}
}
商品服务完整项目
<?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">
<parent>
<artifactId>zuul-aprent</artifactId>
<groupId>org.example</groupId>
<version>1.0-SNAPSHOT</version>
</parent>
<modelVersion>4.0.0</modelVersion>
<groupId>com.product</groupId>
<artifactId>prodoct-service</artifactId>
<dependencies>
<!--客户端-->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
</dependency>
<!--web依赖-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!--添加fastjson依赖-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.7</version>
</dependency>
<!--判断空的用法 -->
<dependency>
<groupId>commons-lang</groupId>
<artifactId>commons-lang</artifactId>
<version>2.6</version>
</dependency>
<!--lombok依赖-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.16</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<finalName>product</finalName>
</build>
</project>
server.port=1000 spring.application.name=product-service #注册到eureka注册中心,如果是注册到集群就用逗号连接多个，单实例写上一个就好 eureka.client.service-url.defaultZone=http://localhost:8761/eureka logging.level.com.product=debug logging.level.web=debug spring.devtools.add-properties=false
package com.product.controller.front;
import lombok.extern.slf4j.Slf4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
/**
* @author yourheart
* @Description
* @create 2022-04-20 21:30
*/
@RestController
@RequestMapping("/product")
@Slf4j
public class ProductController {
@GetMapping("/getProduct/{id}")
public String selectProduct(@PathVariable String id){
log.info("【调用服务者入参】:{}",id);
return "查询到的主键返回"+id;
}
@GetMapping("/testFirst/{id}")
public String testFirst(@PathVariable Integer id){
log.info("【调用服务者入参】:{}",id);
try {
Thread.sleep(4000L);
} catch (InterruptedException e) {
e.printStackTrace();
}
StringBuilder stringBuilder=new StringBuilder();
stringBuilder.append("qwe");
stringBuilder.append("-");
stringBuilder.append(id);
return stringBuilder.toString();
}
}
package com.product;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;
/**
* @author yourheart
* @Description
* @create 2022-04-20 21:28
*/
@SpringBootApplication
@EnableDiscoveryClient
public class ProductApplication {
public static void main(String[] args) {
SpringApplication.run(ProductApplication.class,args);
}
}
而当有第三方服务调用商品服务会出现超时问题
这个因为订单服务默认的超时不够用了
需要在订单服务中配置如下参数
server.port=1001 spring.application.name=order-service #注册到eureka注册中心,如果是注册到集群就用逗号连接多个，单实例写上一个就好 eureka.client.service-url.defaultZone=http://localhost:8761/eureka logging.level.com.order=debug logging.level.web=debug spring.devtools.add-properties=false hystrix.command.default.execution.isolation.thread.timeoutInMillisceconds=20000 ribbon.ConnectTimeout=5000 ribbon.ReadTimeout=5000 ribbon.MaxAutoRetries=1 ribbon.MaxAutoRetriesNextServer=1 ribbon.OkToRetryOnAllOperations=true
就是自定义设置后，默认的超时时间变长了
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