开发工具:STS
代码下载链接:GitHub管理项目
前言:
Springcloud 算是当前比较火的技术,一套微服务架构的技术。
我个人对微服务的理解为:
服务可以代表service,微服务就是小的service,或者说逻辑上不可再分的功能单元。
比如一个电商管理平台,包括:用户管理、商品管理、订单管理、店铺管理、库存管理。。。。。。
我们可以把这些模块抽取成单独的进程单元,方便我们进行对某一功能的集群。
比如,我们的商品管理的业务压力较大,我们就可以集群多个商品管理单元。
微服务架构在我的个人理解下,就是整体分布式、局部集群式架构。把资源更加合理的分配,
也更加适合系统的弹性伸缩。
下面我们来搭建一个简单的微服务框架。
一、建立父工程
1.项目结构
2.添加依赖,控制版本一致
<?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.xm</groupId>
<artifactId>SpringCloudDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>pom</packaging>
<name>SpringCloudDemo</name>
<description>This is a Web about springcloud</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<!-- Jdk版本控制 -->
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<java.version>1.8</java.version>
</properties>
<dependencyManagement>
<dependencies>
<!-- spring-cloud版本控制 -->
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Dalston.SR1</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- spring-boot版本控制 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-dependencies</artifactId>
<version>1.5.14.RELEASE</version>
<type>pom</type>
<scope>import</scope>
</dependency>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<version>1.5.14.RELEASE</version>
</dependency> -->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.0</version>
<scope>provided</scope>
</dependency>
<!-- 添加代码生成器的依赖 -->
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
<version>2.0</version>
</dependency>
<!-- 添加MP依赖-->
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
<version>2.3</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.1.9</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.46</version>
<scope>runtime</scope>
</dependency>
<!-- 修改后立即生效,热部署 -->
<!-- <dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
<version>1.5.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<version>1.5.14.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<version>1.5.14.RELEASE</version>
<scope>test</scope>
</dependency>-->
</dependencies>
</dependencyManagement>
<modules>
<module>Api</module>
<module>User</module>
<module>UI</module>
</modules>
</project>
3.dependencyManagement与dependencies的区别
dependencyManagement:只控制版本,子类需要添加指定依赖,但不需要指定版本
dependencies:子类将直接继承,无需再pom文件中配置
二、建立Api子工程
1.项目结构:
2.添加依赖
<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.xm</groupId>
<artifactId>SpringCloudDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>Api</artifactId>
<dependencies>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>
</dependencies>
</project>
3.添加公共实体
package com.xm.springcloud.pojo;
import com.baomidou.mybatisplus.enums.IdType;
import java.util.Date;
import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.annotations.TableField;
import com.baomidou.mybatisplus.annotations.TableId;
import com.baomidou.mybatisplus.enums.IdType;
import com.baomidou.mybatisplus.activerecord.Model;
import java.io.Serializable;
import com.baomidou.mybatisplus.annotations.Version;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;
/**
* <p>
*
* </p>
*
* @author xm
* @since 2018-07-23
*/
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
public class User extends Model<User> {
private static final long serialVersionUID = 1L;
/**
* 主键id
*/
@TableId(value = "id", type = IdType.AUTO)
private Integer id;
/**
* 账号
*/
@TableField("userName")
private String userName;
/**
* 密码
*/
private String password;
/**
* 昵称
*/
@TableField("nickName")
private String nickName;
/**
* 性别:0:男,1:女
*/
private Boolean sex;
/**
* 生日
*/
private Date birth;
@Override
protected Serializable pkVal() {
return this.id;
}
}
4.说明:
Api里面放的是模块通用的类,其他模块需要引用其依赖使用。
三、建立服务模块
1.项目结构
2.添加依赖
<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.xm</groupId>
<artifactId>SpringCloudDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>User</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<!-- <dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
</dependency> -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
</dependency>
<dependency>
<groupId>com.baomidou</groupId>
<artifactId>mybatis-plus-boot-starter</artifactId>
</dependency>
<dependency>
<groupId>org.apache.velocity</groupId>
<artifactId>velocity-engine-core</artifactId>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!-- <dependency>
<groupId>org.springframework</groupId>
<artifactId>springloaded</artifactId>
</dependency> -->
<dependency>
<groupId>com.xm</groupId>
<artifactId>Api</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
<resources>
<resource>
<directory>src/main/java</directory>
<filtering>false</filtering>
<includes>
<include>**/mapper/*.xml</include>
</includes>
</resource>
</resources>
</build>
</project>
3.配置文件
server:
port: 8001
#配置日志级别
logging:
level:
com:
xm:
springcloud:
dao: trace
spring:
application:
name: user
datasource:
type: com.alibaba.druid.pool.DruidDataSource # 当前数据源操作类型
driver-class-name: com.mysql.jdbc.Driver # mysql驱动包
url: jdbc:mysql://10.1.51.31:3306/timehotel?useSSL=true # 数据库名称
username: root
password: cube1501
dbcp2:
min-idle: 5 # 数据库连接池的最小维持连接数
initial-size: 5 # 初始化连接数
max-total: 5 # 最大连接数
max-wait-millis: 200 # 等待连接获取的最大超时时间
mybatis-plus:
mapper-locations: classpath:/com/springcloud/dao/mapper/*Mapper.xml
type-aliases-package: com.xm.springcloud.pojo
configuration:
map-underscore-to-camel-case: true
cache-enabled: false
4.代码结构
5.说明:
因为mybatisplus和热部署有冲突,在这里就取消了热部署
四、建立UI模块
1.项目结构
2.添加依赖
<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.xm</groupId>
<artifactId>SpringCloudDemo</artifactId>
<version>0.0.1-SNAPSHOT</version>
</parent>
<artifactId>UI</artifactId>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.xm</groupId>
<artifactId>Api</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
</dependencies>
</project>
3.配置文件
server:
port: 80
4.配置注入RestTemplate
package com.xm.springcloud.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.client.RestTemplate;
@Configuration
public class MyConfig {
@Bean
public RestTemplate getRestTemplate() {
return new RestTemplate();
}
}
5.转发请求服务
package com.xm.springcloud.controller;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;
import com.xm.springcloud.pojo.User;
@RestController
public class UserController {
private static final String url = "http://127.0.0.1:8001";
@Autowired
private RestTemplate restTemplate;
@GetMapping("/user/{id}")
public User getById(@PathVariable("id")Long id) {
return restTemplate.getForObject(url+"/user/"+id, User.class);
}
}
6.说明
80端口在浏览器中会自动缺省
五、运行结果
1.测试User模块
2.测试UI模块
2018-07-24