maven不再讲述,过多的理论知识不解释,拿起键盘就是干,这里只是开始,后续会将Spring Cloud一套的东西都加进来,当然不是一篇文章,一篇文章一个内容,代码都是接着的。
创建一个父工程:
pom.xml:
<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.ypp.springcloud</groupId>
<artifactId>yppcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<junit.version>4.12</junit.version>
<log4j.version>1.2.17</log4j.version>
<lombok.version>1.16.18</lombok.version>
</properties>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.5.9.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.0.4</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.31</version>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>1.2.3</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<finalName>microservicecloud</finalName>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<configuration>
<delimiters>
<delimit>$</delimit>
</delimiters>
</configuration>
</plugin>
</plugins>
</build>
</project>
注意spring boot和spring cloud版本,不熟悉的建议不要使用2.0以上的版本。版本有部分更改变动
主要是定义POM文件,将后续各个子模块公用的jar包等统一提出来,类似一个抽象父类
构建api子工程:
右键父项目,选择maven module,不是maven project,maven module项目才是存在子父级关系,project不存在关系
创建完成,父工程自动生成了配置
api模块的pom.xml:
<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>
<parent>
<groupId>com.ypp.springcloud</groupId>
<artifactId>yppcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>yppcloud-api</artifactId><!-- 当前Module我自己叫什么名字 -->
<dependencies><!-- 当前Module需要用到的jar包,按自己需求添加,如果父类已经包含了,可以不用写版本号 -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId> <!-- 懒人必备 setter、getter、Constructor等-->
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-feign</artifactId>
</dependency>
</dependencies>
</project>
如果要使用lombok的注解,请在eclipse/ide配置lombok插件
创建一个entity dept
package com.ypp.springcloud.entites;
import java.io.Serializable;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;
@AllArgsConstructor//全参构造方法
@NoArgsConstructor//无参构造方法
@Accessors(chain=true)//链式编程写法
@Data//getter、setter方法
public class Dept implements Serializable{ //必须序列化
/**
*
*/
private static final long serialVersionUID = -1571650930758553704L;
private Long id;//主键
private String deptName;//部门名称
private String dbSource;//数据库,微服务可以一个服务对应一个数据库,同一个信息存储到不同的数据库
public static void main(String[] args) {
Dept dept = new Dept();
dept.setDbSource("ss").setDeptName("aa").setId(1L);//链式编程写法
}
}
新建微服务的提供者:
同样创建一个子模块项目
此服务占用的端口是8001
pom.xml引入相关依赖:
<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>
<parent>
<groupId>com.ypp.springcloud</groupId>
<artifactId>yppcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>yppcloud-provider-dept-8001</artifactId>
<dependencies>
<!-- 引入自己定义的api通用包,可以使用Dept部门Entity -->
<dependency>
<groupId>com.ypp.springcloud</groupId>
<artifactId>yppcloud-api</artifactId>
<version>${project.version}</version>
</dependency>
<!-- actuator监控信息完善 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<!-- 将微服务provider侧注册进eureka -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-config</artifactId>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
</dependency>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-jetty</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<!-- 修改后立即生效,热部署 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
</dependencies>
</project>
spring boot内部嵌入了tomcat、jetty等应用服务器,这里我使用的是jetty
新建application.yml:
server:
port: 8001
spring:
application:
name: yppcloud-dept #很重要,很重要,很重要,这是微服务向外部暴露的微服务的名字
datasource:
type: com.alibaba.druid.pool.DruidDataSource
driverClassName: com.mysql.jdbc.Driver
driver-class-name: com.mysql.jdbc.Driver
platform: mysql
url: jdbc:mysql://localhost:3306/ypp-springcloud?useUnicode=true&characterEncoding=UTF-8&allowMultiQueries=true&useSSL=false
username: root
password: admin
initialSize: 5
minIdle: 5
maxActive: 20
maxWait: 60000
timeBetweenEvictionRunsMillis: 60000
minEvictableIdleTimeMillis: 300000
validationQuery: SELECT1FROMDUAL
testWhileIdle: true
testOnBorrow: false
testOnReturn: false
filters: stat,wall
logSlowSql: true
mybatis:
config-location: classpath:mybatis/mybatis.cfg.xml
typeAliasesPackage: com.ypp.springcloud.entites
mapper-locations: classpath:mybatis/mapper/**/*Mapper.xml
eureka:
client: #客户端注册进eureka服务列表内
service-url:
#defaultZone: http://localhost:7001/eureka
defaultZone: http://eureka7001.com:7001/eureka/,http://eureka7002.com:7002/eureka/,http://eureka7003.com:7003/eureka/
instance:
instance-id: microservicecloud-dept8001
prefer-ip-address: true #访问路径可以显示IP地址
#logging.config:
# classpath: dev/log4j2_dev.xml
mapper代码和service代码等这种代码不贴
mybatis.cfg.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<setting name="cacheEnabled" value="true" /><!-- 二级缓存开启 -->
</settings>
</configuration>
编写启动类Application,注意位置。顶包下
package com.ypp.springcloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
启动,postman测试:
成功
创建微服务的消费者端:
同样创建一个子模块项目:yppcloud-consumer-dept-80 占用80端口,访问一般直接访问网站不带端口的
application.yml:
很简单,配置一个端口就行了
pom.xml:
<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>
<parent>
<groupId>com.ypp.springcloud</groupId>
<artifactId>yppcloud</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>yppcloud-consumer-dept-80</artifactId>
<description>部门微服务消费者</description>
<dependencies>
<!-- 引入自己定义的api通用包,可以使用Dept部门Entity -->
<dependency>
<groupId>com.ypp.springcloud</groupId>
<artifactId>yppcloud-api</artifactId>
<version>${project.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- 修改后立即生效,热部署 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency>
</dependencies>
</project>
配置一个restTemplate远程调用8001的客户端
RestTemplate:提供了多种便捷访问远程Http服务的方法,是一种简单便捷的访问restful服务模板类,是Spring提供的用于访问Rest服务的客户端模板工具集,使用restTemplate访问restful接口非常的简单。(url, requestMap, ResponseBean.class)这三个参数分别代表REST请求地址、请求参数、HTTP响应转换被转换成的对象类型。
ConfigRest:
package com.ypp.springcloud.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class ConfigRest {
@Bean(name = "restTemplate")
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
创建一个消费端的入口:DeptControllerConsumer
package com.ypp.springcloud.consumer;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import com.ypp.springcloud.entites.Dept;
@RestController
public class DeptControllerConsumer {
private static final String REST_URL_PREFIX = "http://localhost:8001";
@Autowired
private RestTemplate restTemplate;
@RequestMapping(value = "/consumer/dept/add")
public boolean add(Dept dept) {
return restTemplate.postForObject(REST_URL_PREFIX + "/dept/add", dept, Boolean.class);
}
@RequestMapping(value = "/consumer/dept/get/{id}")
public Dept get(@PathVariable("id") Long id) {
return restTemplate.getForObject(REST_URL_PREFIX + "/dept/get/" + id, Dept.class);
}
@SuppressWarnings("unchecked")
@RequestMapping(value = "/consumer/dept/list")
public List<Dept> list() {
return restTemplate.getForObject(REST_URL_PREFIX + "/dept/list", List.class);
}
}
项目结构:
postman测试:
以上差不多就是大概的内容,其实这里主要是在复习spring boot,springcloud的很多东西还没用到。
目前的项目结构:
后面接着这个来进行,下一遍:Eureka服务注册与发现,和Zookeeper类似的东西
源码地址:https://pan.baidu.com/s/155FPzaFX7pXafqINNbRe-A 提取码:mp5a
在Spring Cloud系列学习完之后,给整套demo源码地址,包含的内容有:Eureka服务注册与发现、Ribbon负载均衡、Feign负载均衡、Hystrix断路器、zuul路由网关、Config分布式配置