spring-cloud

spring-cloud

主項目的pom.xml

<?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>com.lanou</groupId>
    <artifactId>spring-cloud</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>pom</packaging>

    <name>spring-cloud</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.3.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <modules>
        <module>eureka-server</module>
        <module>euceka-client02</module>
        <module>eureka-client03</module>
        <module>order-service</module>
        <module>fegin-order</module>
    </modules>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
        <spring-cloud.version>Edgware.SR3</spring-cloud.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <!-- 管理Springcloud版本 -->
    <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>
</project>

主項目的application.yml

spring:
  application:
    name: eureka-client
server:
  port: 8090

主項目的SpringCloudApplication

package com.lanou.springcloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class SpringCloudApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringCloudApplication.class, args);
    }
}

eureka-server項目

eureka-server項目的pom.xml

<?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>com.lanou</groupId>
    <artifactId>eureka-server</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>eureka-server</name>
    <description>Demo project for Spring Boot</description>
    <parent>
        <groupId>com.lanou</groupId>
        <artifactId>spring-cloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka-server</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

</project>

eureka-server項目的application.yml

eureka:
  client:
    fetch-registry: false
    register-with-eureka: false
server:
  port: 8761

eureka-server項目的EurekaServerApplication

package com.lanou.eurekaserver;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.server.EnableEurekaServer;

@SpringBootApplication
@EnableEurekaServer
public class EurekaServerApplication {

    public static void main(String[] args) {
        SpringApplication.run(EurekaServerApplication.class, args);
    }
}

euceka-client02項目

euceka-client02項目的pom.xml

<?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>com.lanou</groupId>
    <artifactId>euceka-client02</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>euceka-client02</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>com.lanou</groupId>
        <artifactId>spring-cloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</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-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
</project>

euceka-client02項目的application.yml

spring:
  application:
    name: -
server:
  port: 8763
#默認情況下我們的服務迴向
#http://localhost:8761/eureka/
#這個服務註冊中心進行註冊，如果你設置的
#服務註冊中心不在8761端口下就需要
#設置eureka.client:.service-url.defaultZone
#http://ip:服務註冊中心的期啓動端口／eureka
#這樣就好向我們設置的服務中心進行註冊了
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka/

euceka-client02項目的EucekaClient02Application

package com.lanou;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class EucekaClient02Application {

    public static void main(String[] args) {
        SpringApplication.run(EucekaClient02Application.class, args);
    }
}

euceka-client02項目的UserController

package com.lanou.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {

    @Value("${server.port}")
    private int port;

    @RequestMapping("/findUser")
    public String findUserByName(String name){
        return "{\"name\":\""+name+"\",\"port\":\""+port+"\"}";
    }


    @RequestMapping("/hi")
    public String hello(String name){
        return "i am :" + name + "port:" + port;
    }
}

eureka-client03項目

eureka-client03項目的pom.xml

<?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>com.lanou</groupId>
    <artifactId>eureka-client03</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>eureka-client03</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>com.lanou</groupId>
        <artifactId>spring-cloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</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-eureka-client</artifactId>
        </dependency>
    </dependencies>
</project>

eureka-client03項目的application.yml

spring:
  application:
    name: user-service

server:
  port: 8764
eureka:
  client:
    service-url:
     defaultZone: http://localhost:8761/eureka/

eureka-client03項目的EurekaClient03Application

package com.lanou;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class EurekaClient03Application {

    public static void main(String[] args) {
        SpringApplication.run(EurekaClient03Application.class, args);
    }
}

eureka-client03項目的UserController

package com.lanou.controller;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class UserController {

    @Value("${server.port}")
    private int port;

    @RequestMapping("/findUser")
    public String findUserByName(String name){
        return "{\"name\":\""+name+"\",\"port\":\""+port+"\"}";
    }

    @RequestMapping("/hi")
    public String hello(String name){
        return "i am :" + name + "port:" + port;
    }
}

order-service項目

order-service項目的pom.xml

<?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>com.lanou</groupId>
    <artifactId>order-service</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>order-service</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>com.lanou</groupId>
        <artifactId>spring-cloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</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-eureka</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-ribbon</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-hystrix</artifactId>
        </dependency>
    </dependencies>

</project>

order-service項目的application.yml

spring:
  application:
    name: order-service
server:
  port: 8765
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka

order-service項目的OrderServiceApplication

package com.lanou;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.hystrix.EnableHystrix;

@SpringBootApplication
@EnableEurekaClient
@EnableHystrix
public class OrderServiceApplication {

    public static void main(String[] args) {
        SpringApplication.run(OrderServiceApplication.class, args);
    }
}

order-service項目的RibbonConfig

package com.lanou.util;

import org.springframework.cloud.client.loadbalancer.LoadBalanced;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;

@Configuration
public class RibbonConfig {

    @Bean
    @LoadBalanced
    public RestTemplate getRestTemplate(){
        return new RestTemplate();
    }
}

order-service項目的OrderController

package com.lanou.controller;

import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

@RestController
public class OrderController {
    @Autowired
    private RestTemplate restTemplate;

    @RequestMapping("/ribbon")
    @HystrixCommand(fallbackMethod = "userError")
    public String ribbon(String name){
        System.out.println("sadsds+"  + restTemplate);
        String result = restTemplate.getForObject("http://user-service/hi?name=" + name,String.class);
        return "result:" + result;
    }

    public  String userError(String name){
        return "user service is error,name:" + name;
    }

}

zuul項目

zuul項目的pom.xml

<?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>com.lanou</groupId>
    <artifactId>zuul</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>zuul</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>com.lanou</groupId>
        <artifactId>spring-cloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</relativePath>
    </parent>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-netflix-zuul</artifactId>
        </dependency>

    </dependencies>

    <repositories>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

zuul項目的ZuulApplicationTests

package com.lanou;

import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

@RunWith(SpringRunner.class)
@SpringBootTest
public class ZuulApplicationTests {

    @Test
    public void contextLoads() {
    }

}

zuul項目的application.yml

server:
  port: 8767
spring:
  application:
    name: zuul
zuul:
  routes:
    userapi:
      path: /user/**
      serviceId: user-service
    orderapi:
      path: /order/**
      serviceId: order-service
eureka:
  client:
    service-url:
      defaultZone: http://localhost:8761/eureka/

zuul項目的ZuulApplication

package com.lanou;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;

@SpringBootApplication
@EnableZuulProxy
public class ZuulApplication {

    public static void main(String[] args) {
        SpringApplication.run(ZuulApplication.class, args);
    }
}

zuul項目的BeforeError

package com.lanou.util;

import org.springframework.cloud.netflix.zuul.filters.route.ZuulFallbackProvider;
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;

// @Component
public class BeforeError implements ZuulFallbackProvider {
    @Override
    public String getRoute() {
        // 設置是對哪個服務進行熔斷
        return "user-service";
    }

    @Override
    public ClientHttpResponse fallbackResponse() {
        return new ClientHttpResponse() {
            @Override
            public HttpStatus getStatusCode() throws IOException {
                return HttpStatus.OK;
            }

            @Override
            public int getRawStatusCode() throws IOException {
                return 200;
            }

            @Override
            public String getStatusText() throws IOException {
                return "ok";
            }

            @Override
            public void close() {
            }

            @Override
            public InputStream getBody() throws IOException {
                return new ByteArrayInputStream(
                        "user_service error".getBytes()
                );
            }

            @Override
            public HttpHeaders getHeaders() {
                HttpHeaders headers = new HttpHeaders();
                headers.setContentType(MediaType.APPLICATION_JSON);
                return headers;
            }
        };
    }
}

zuul項目的NowError

package com.lanou.util;

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;

@Component
public class NowError implements FallbackProvider {

    @Override
    public ClientHttpResponse fallbackResponse(Throwable cause) {
        System.out.println(cause);
        return fallbackResponse();
    }

    @Override
    public String getRoute() {
        // 設置是對哪個服務進行熔斷
       // return "user-service";
        return "*";
    }

    @Override
    public ClientHttpResponse fallbackResponse() {
        return new ClientHttpResponse() {
            @Override
            public HttpStatus getStatusCode() throws IOException {
                return HttpStatus.OK;
            }

            @Override
            public int getRawStatusCode() throws IOException {
                return 200;
            }

            @Override
            public String getStatusText() throws IOException {
                return "ok";
            }

            @Override
            public void close() {
            }

            @Override
            public InputStream getBody() throws IOException {
                return new ByteArrayInputStream(
                        "now user_service error".getBytes()
                );
            }

            @Override
            public HttpHeaders getHeaders() {
                HttpHeaders headers = new HttpHeaders();
                headers.setContentType(MediaType.APPLICATION_JSON);
                return headers;
            }
        };
    }
}

zuul項目的TestFilter

package com.lanou.util;

import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;

@Component
public class TestFilter extends ZuulFilter {
    @Override
    public String filterType() {
        return "pre";
    }

    @Override
    public int filterOrder() {
        return 10;
    }

    @Override
    public boolean shouldFilter() {
        return true;
    }

    @Override
    public Object run() {
        System.out.println("++++++++++test+++++++");

        return null;
    }
}

zuul項目的TokenFilter

package com.lanou.util;

import com.netflix.zuul.ZuulFilter;
import com.netflix.zuul.context.RequestContext;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.io.IOException;
@Component
public class TokenFilter extends ZuulFilter{
    // filterType返回過濾器的類型
    // pre 之前
    // post 之後
    // routing 運行時
    //error  錯誤
    @Override
    public String filterType() {
        return "pre";
    }
    // filterOrder返回值越小越先執行
    @Override
    public int filterOrder() {
        return 1;
    }
    // shouldFilter返回true時filter就好啓用
    // 返回false時filter就不會運行
    // 一般不會固定寫死，而是通過我們的代碼邏輯來對我們的請求
    // 來決定返回true還是false
    @Override
    public boolean shouldFilter() {
        RequestContext requestContext =
                RequestContext.getCurrentContext();
        HttpServletRequest request = requestContext.getRequest();
        String uri = request.getRequestURI();
        System.out.println(request.getRequestURI());
        if("/user/hi".equals(uri)){
            return false;
        }
        return true;
    }

    @Override
    public Object run() {
        System.out.println("++++++++++pre+++++++");
        RequestContext requestContext =
                RequestContext.getCurrentContext();
        HttpServletRequest request = requestContext.getRequest();
        String token = request.getParameter("token");
        if(token == null){
            requestContext.setSendZuulResponse(false);
            requestContext.setResponseStatusCode(401);
            try{
                requestContext.getResponse().getWriter().print("token is null");
            }catch (IOException e){

            }
            return null;
        }
        System.out.println("token:" + token);
        return null;
    }
}

fegin-order項目

fegin-order項目的pom.xml

?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>com.lanou</groupId>
    <artifactId>fegin-order</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>fegin-order</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>com.lanou</groupId>
        <artifactId>spring-cloud</artifactId>
        <version>0.0.1-SNAPSHOT</version>
        <relativePath>../pom.xml</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-eureka-client</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-openfeign</artifactId>
        </dependency>
    </dependencies>

    <repositories>
        <repository>
            <id>spring-snapshots</id>
            <name>Spring Snapshots</name>
            <url>https://repo.spring.io/snapshot</url>
            <snapshots>
                <enabled>true</enabled>
            </snapshots>
        </repository>
        <repository>
            <id>spring-milestones</id>
            <name>Spring Milestones</name>
            <url>https://repo.spring.io/milestone</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </repository>
    </repositories>

</project>

fegin-order項目的application.yml

spring:
  application:
    name: order-service

server:
  port: 8766
eureka:
  client:
    service-url:
     defaultZone: http://localhost:8761/eureka/
feign:
  hystrix:
    enabled: true

fegin-order項目的FeginOrderApplication

package com.lanou;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.eureka.EnableEurekaClient;
import org.springframework.cloud.netflix.feign.EnableFeignClients;

@SpringBootApplication
@EnableEurekaClient
@EnableFeignClients
// 1.引入起步依賴
// 2.@EnableFeignClients
// 3.要訪問哪個服務給的哪個服務創建對應的Service接口 然後給接口增加
// @ForeignClient（value="服務名"）
// 來知道調用對應的service是訪問哪個服務
// 4.通過給方法設置對應的@Requestmapping（"／findUser"）
// 來知道要訪問的是對應服務的哪個請求
// 5.如果要傳遞參數給參數使用
// @RequestParam(value = "服務請求參數的形參名")
// 這樣就可以接收到了
public class FeginOrderApplication {


    public static void main(String[] args) {
        SpringApplication.run(FeginOrderApplication.class, args);
    }
}

fegin-order項目的OrderController

package com.lanou.controller;

import com.lanou.service.OrderService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

@RestController
public class OrderController {

    @Autowired
    private OrderService orderService;

    @RequestMapping("/createOrder")
    public String createOrder(String name){

        orderService.createOrder(name);
        return "createSuccess";

    }
}