SpringCloud基本Rest微服務(wù)工程搭建過程
1. 父工程構(gòu)建
1.1 Maven項目搭建
環(huán)境 | 版本 |
---|---|
JDK | 1.8 |
Maven | 3.6+ |
Maven模板 | maven-archetype-size |
刪除父工程src文件 |
1.2 父工程pom文件
回顧:
① Maven中dependencyManagement和dependencies的區(qū)別
Maven使用dependencyManagement元素來提供一種管理依賴版本號的方式。通常會在一個組織或者項 目的最頂層的父POM中看到。使用pom.xml中 的dependencyManagement元素能讓所有中引用一個依賴而不用顯示的列出版本號。Maven會沿著父子層次向上找,直到找到一個擁有dependencyManagement元素的項目,然后它就會使用這個元素中指定的版本號。另外如果某個子項目需要使用另外的版本只需要聲明version即可。注意:dependencyManagement里只是聲明依賴,并不實現(xiàn)引入,因此子項目要顯示的聲明需要的依賴。
② Maven中如何跳過單元測試
在Idea的Maven側(cè)欄點擊閃電圖標(biāo),使Maven跳過test生命周期即可。
<?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.polaris</groupId> <artifactId>com.polaris.springcloud</artifactId> <version>1.0-SNAPSHOT</version> <packaging>pom</packaging> <modules> </modules> <!-- 統(tǒng)一管理jar包版本 --> <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> <mysql.version>5.1.47</mysql.version> <druid.version>1.1.16</druid.version> <mybatis.spring.boot.version>1.3.0</mybatis.spring.boot.version> </properties> <!-- 子模塊繼承之后,提供作用:鎖定版本+子modlue不用寫groupId和version --> <dependencyManagement> <dependencies> <!--spring boot 2.2.2--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-dependencies</artifactId> <version>2.2.2.RELEASE</version> <type>pom</type> <scope>import</scope> </dependency> <!--spring cloud Hoxton.SR1--> <dependency> <groupId>org.springframework.cloud</groupId> <artifactId>spring-cloud-dependencies</artifactId> <version>Hoxton.SR1</version> <type>pom</type> <scope>import</scope> </dependency> <!--spring cloud alibaba 2.1.0.RELEASE--> <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> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>${druid.version}</version> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> <version>${mybatis.spring.boot.version}</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>${junit.version}</version> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>${log4j.version}</version> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <version>${lombok.version}</version> <optional>true</optional> </dependency> </dependencies> </dependencyManagement> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> <addResources>true</addResources> </configuration> </plugin> </plugins> </build> </project>
2. 微服務(wù)提供者支付Module模塊
cloud-provider-payment8001
2.1 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"> <parent> <artifactId>com.polaris.springcloud</artifactId> <groupId>com.polaris</groupId> <version>1.0-SNAPSHOT</version> </parent> <modelVersion>4.0.0</modelVersion> <artifactId>cloud-provider-payment8001</artifactId> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.mybatis.spring.boot</groupId> <artifactId>mybatis-spring-boot-starter</artifactId> </dependency> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid-spring-boot-starter</artifactId> <version>1.1.10</version> </dependency> <!--mysql-connector-java--> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> </dependency> <!--jdbc--> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-jdbc</artifactId> </dependency> <!-- 通用配置 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> </project>
2.2 yml配置文件
server: port: 8001 spring: application: name: cloud-payment-service datasource: type: com.alibaba.druid.pool.DruidDataSource # 當(dāng)前數(shù)據(jù)源操作類型 driver-class-name: org.gjt.mm.mysql.Driver # mysql驅(qū)動包 url: jdbc:mysql://mpolaris.top:3306/cloud-test?useUnicode=true&characterEncoding=utf-8&useSSL=false username: root password: 123456 mybatis: mapperLocations: classpath:mapper/*.xml type-aliases-package: com.polaris.springcloud.entities # 所有Entity別名類所在包
2.3 主啟動類
/** * @Author polaris * @Date 2021/1/21 1:00 */ @SpringBootApplication public class PaymentMain { public static void main(String[] args) { SpringApplication.run(PaymentMain.class,args); } }
2.4 業(yè)務(wù)類(簡單演示)
建表
entities
主實體 與 Json封裝體
@Data @AllArgsConstructor @NoArgsConstructor public class Payment implements Serializable { private Long id; private String serial; }
@Data @AllArgsConstructor @NoArgsConstructor public class CommonResult<T> { private Integer code; private String message; private T data; public CommonResult(Integer code, String message){ this(code,message,null); } }
dao
接口PaymentDao與mybatis映射文件PaymentMapper
@Mapper public interface PaymentDao { int save(Payment payment); Payment getPaymentById(@Param("id") Long id); }
<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" > <mapper namespace="com.polaris.springcloud.dao.PaymentDao"> <insert id="save" parameterType="Payment" useGeneratedKeys="true" keyProperty="id"> insert into payment(serial) values(#{serial}); </insert> <resultMap id="BaseResultMap" type="com.polaris.springcloud.entities.Payment"> <id column="id" property="id" jdbcType="BIGINT"/> <id column="serial" property="serial" jdbcType="VARCHAR"/> </resultMap> <select id="getPaymentById" parameterType="Long" resultMap="BaseResultMap"> select * from payment where id=#{id}; </select> </mapper>
service
接口與實現(xiàn)類
@Service public class PaymentServiceImpl implements PaymentService { @Resource private PaymentDao paymentDao; @Override public int save(Payment payment) { return paymentDao.save(payment); } @Override public Payment getPaymentById(Long id) { return paymentDao.getPaymentById(id); } }
controller
@RestController @Slf4j @RequestMapping("/payment") public class PaymentController { @Resource private PaymentService paymentService; @PostMapping("/save") public CommonResult save(Payment payment) { int result = paymentService.save(payment); log.info("===> result: " + result); if(result > 0) { return new CommonResult(200,"保存到數(shù)據(jù)庫成功",result); } return new CommonResult(400,"保存到數(shù)據(jù)庫失敗",null); } @GetMapping("/get/{id}") public CommonResult<Payment> save(@PathVariable("id") Long id) { Payment paymentById = paymentService.getPaymentById(id); log.info("===> payment: " + paymentById); if(paymentById != null) { return new CommonResult(200,"查詢成功",paymentById); } return new CommonResult(400,"查詢失敗",null); } }
3. 開啟Devtools熱部署
3.1 聚合父類總工程pom.xml添加配置
<build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> <addResources>true</addResources> </configuration> </plugin> </plugins> </build>
3.2 當(dāng)前工程添加devtools依賴
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency>
3.3 Idea開啟自動編譯選項
3.4 開啟熱注冊
快捷鍵 ctrl + shift + alt + /,打開Registry
勾選
重啟Idea,即可測試代碼時不用手動重啟
注意:該功能只能在開發(fā)階段使用,上線前一定要關(guān)閉
4. 微服務(wù)消費者訂單Module模塊
cloud-consumer-order80
4.1 pom.xml
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies>
4.2 yml配置文件
server:
port: 80
4.3 主啟動類
4.4 RestTemplate引入
是什么
RestTemplate提供了多種便捷 訪問遠(yuǎn)程Http服務(wù) 的方法,是一種簡單便捷的訪問restful服務(wù)模板類,是Spring提供的用于訪問Rest服務(wù)的 客戶端模板工具類
如何使用
使用restTemplate訪問restful接口非常的簡單粗暴。
url
REST請求地址requestMap
請求參數(shù)ResponseBean.classs
HTTP響應(yīng)轉(zhuǎn)換被轉(zhuǎn)換成的對象類型
config配置類
@Configuration public class ApplicationContextConfig { @Bean public RestTemplate getRestTemplate() { return new RestTemplate(); } }
4.5 業(yè)務(wù)類
entities
與提供者支付模塊一致
controller
@RestController @Slf4j @RequestMapping("/consumer") public class OrderController { @Resource private RestTemplate restTemplate; private static final String PAYMENT_URL = "http://localhost:8001"; @GetMapping("/payment/save") public CommonResult<Payment> save(Payment payment) { return restTemplate.postForObject(PAYMENT_URL + "/payment/save", payment,CommonResult.class); } @GetMapping("/payment/get/{id}") public CommonResult<Payment> get(@PathVariable("id") Long id) { return restTemplate.getForObject(PAYMENT_URL + "/payment/get/" + id, CommonResult.class); } }
4.6 啟動兩個模塊測試
啟動兩個模塊沒有出現(xiàn)Run Dashbord的問題
在工程目錄下找.idea文件夾下的workspace.xml添加如下代碼即可
<component name="RunDashboard"> <option name="configurationTypes"> <set> <option value="SpringBootApplicationConfigurationType" /> </set> </option> <option name="ruleStates"> <list> <RuleState> <option name="name" value="ConfigurationTypeDashboardGroupingRule" /> </RuleState> <RuleState> <option name="name" value="StatusDashboardGroupingRule" /> </RuleState> </list> </option> </component>
插入成功但是沒有內(nèi)容的問題
解決:支付模塊這里一定要加@RequestBody注解
@PostMapping("/save") public CommonResult save(@RequestBody Payment payment) { int result = paymentService.save(payment); log.info("===> result: " + result); if(result > 0) { return new CommonResult(200,"保存到數(shù)據(jù)庫成功",result); } return new CommonResult(400,"保存到數(shù)據(jù)庫失敗",null); }
5. 工程重構(gòu) - 公共工程模塊
5.1 發(fā)現(xiàn)問題 - 系統(tǒng)中有重復(fù)代碼 entities
5.2 新建公共工程 cloud-api-common
重復(fù)代碼,公共接口,第三方接口,工具類等都可以放在這里
pom.xml
Hutool是一個小而全的Java工具類庫,是項目中“util”包友好的替代
<dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <!-- hutool工具類 --> <dependency> <groupId>cn.hutool</groupId> <artifactId>hutool-all</artifactId> <version>5.1.0</version> </dependency> </dependencies>
5.3 抽取多個模塊的共同代碼
將cloud-api-common安裝到maven倉庫
修改訂單80和支付8001代碼
- 刪除各自原先的enntities
- 各自添加pom內(nèi)容
<!-- 公共模塊 --> <dependency> <groupId>com.polaris</groupId> <artifactId>cloud-api-common</artifactId> <version>${project.version}</version> </dependency>
到此這篇關(guān)于SpringCloud基本Rest微服務(wù)工程搭建的文章就介紹到這了,更多相關(guān)SpringCloud微服務(wù)工程搭建內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持腳本之家!
- 解析SpringCloud簡介與微服務(wù)架構(gòu)
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- springcloud微服務(wù)基于redis集群的單點登錄實現(xiàn)解析
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- SpringCloud微服務(wù)架構(gòu)升級匯總
- SpringCloud之微服務(wù)容錯的實現(xiàn)
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- SpringCloud實現(xiàn)Redis在各個微服務(wù)的Session共享問題
- 詳解SpringCloud微服務(wù)架構(gòu)之Hystrix斷路器
- 淺談SpringCloud實現(xiàn)簡單的微服務(wù)架構(gòu)
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