SpringCloud(第 038 篇)idea环境热部署微服务开发
2017-10-19 12:51
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SpringCloud(第 038 篇)idea环境热部署微服务开发
-一、大致介绍
1、我们在开发过程中,会经常需要启动、停止微服务,而且有时候会比较频繁,需要不停的操作启停动作; 2、而我们本章节主要讲解下如何在开发环境中进行热部署,这样的话可以在一定程度上专心敲代码,两耳不闻窗外事,一心只想敲代码;
二、实现步骤
2.1 添加 maven 引用包
<?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> <artifactId>springms-simple-provider-user-devtools</artifactId> <version>1.0-SNAPSHOT</version> <packaging>jar</packaging> <parent> <groupId>com.springms.cloud</groupId> <artifactId>springms-spring-cloud</artifactId> <version>1.0-SNAPSHOT</version> </parent> <dependencies> <!-- 访问数据库模块 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <!-- web模块 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- h2数据库模块 --> <dependency> <groupId>com.h2database</groupId> <artifactId>h2</artifactId> <scope>runtime</scope> </dependency> <!-- 支持Apache Solr搜索平台,包括spring-data-solr --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-solr</artifactId> </dependency> <!-- 热部署模块 --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <optional>true</optional> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <fork>true</fork> </configuration> </plugin> </plugins> </build> </project>
2.2 添加应用配置文件(springms-simple-provider-user-devtools\src\main\resources\application.yml)
server: port: 8305 spring: application: name: springms-simple-provider-user-devtools #全部小写 jpa: generate-ddl: false show-sql: true hibernate: ddl-auto: none datasource: platform: h2 schema: classpath:schema.sql data: classpath:data.sql thymeleaf: cache: false logging: level: root: INFO org.hibernate: INFO org.hibernate.type.descriptor.sql.BasicBinder: TRACE org.hibernate.type.descriptor.sql.BasicExtractor: TRACE com.springms: DEBUG
2.3 添加 H2 数据库脚本(springms-simple-provider-user-devtools\src\main\resources\schema.sql)
drop table user if exists; CREATE TABLE USER( id BIGINT GENERATED by default as identity, username VARCHAR(40), name VARCHAR(20), age int(3), balance DECIMAL(10, 2), PRIMARY KEY(id) );
2.4 插入 H2 数据库一些初始化数据(springms-simple-provider-user-devtools\src\main\resources\data.sql)
INSERT into user (id, username, name, age, balance) values (1, 'user1', '张三', 20, 100.00); INSERT into user (id, username, name, age, balance) values (2, 'user2', '李四', 22, 100.00); INSERT into user (id, username, name, age, balance) values (3, 'user3', '王五', 24, 100.00); INSERT into user (id, username, name, age, balance) values (4, 'user4', '赵六', 26, 100.00); INSERT into user (id, username, name, age, balance) values (5, 'user5', '李逵', 27, 100.00); INSERT into user (id, username, name, age, balance) values (6, 'user6', '张远', 10, 100.00); INSERT into user (id, username, name, age, balance) values (7, 'user7', '迪拜', 60, 100.00); INSERT into user (id, username, name, age, balance) values (8, 'user8', '哈士奇', 40, 100.00); INSERT into user (id, username, name, age, balance) values (9, 'user9', '关羽', 30, 100.00);
2.5 添加访问底层数据模型的DAO接口(springms-simple-provider-user-devtools\src\main\java\com\springms\cloud\repository\UserRepository.java)
package com.springms.cloud.repository; import com.springms.cloud.entity.User; import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.stereotype.Repository; @Repository public interface UserRepository extends JpaRepository<User, Long> { }
2.6 添加实体用户类User(springms-simple-provider-user-devtools\src\main\java\com\springms\cloud\entity\User.java)
package com.springms.cloud.entity; import java.math.BigDecimal; import javax.persistence.Column; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.GenerationType; import javax.persistence.Id; @Entity public class User { @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; @Column private String username; @Column private String name; @Column private Short age; @Column private BigDecimal balance; public Long getId() { return this.id; } public void setId(Long id) { this.id = id; } public String getUsername() { return this.username; } public void setUsername(String username) { this.username = username; } public String getName() { return this.name; } public void setName(String name) { this.name = name; } public Short getAge() { return this.age; } public void setAge(Short age) { this.age = age; } public BigDecimal getBalance() { return this.balance; } public void setBalance(BigDecimal balance) { this.balance = balance; } }
2.7 添加用户Web访问层Controller(springms-simple-provider-user-devtools/src/main/java/com/springms/cloud/controller/SimpleProviderUserDevtoolsController.java)
package com.springms.cloud.controller; import com.springms.cloud.entity.User; import com.springms.cloud.repository.UserRepository; 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; /** * 用户微服务Controller(支持 idea 热部署)。 * * @author hmilyylimh * * @version 0.0.1 * * @date 17/10/18 * */ @RestController public class SimpleProviderUserDevtoolsController { @Autowired private UserRepository userRepository; @GetMapping("/simple/{id}") public User findById(@PathVariable Long id) { return this.userRepository.findOne(id); } @GetMapping("simple") public String simple() { return "simple-2017-09"; } @GetMapping("simple2") public String simple2() { return "simple2-2017"; } }
2.8 添加简单用户微服务启动类(springms-simple-provider-user-devtools\src\main\java\com\springms\cloud\MsSimpleProviderUserApplication.java)
package com.springms.cloud; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * 简单用户微服务类(支持 idea 热部署)。 * * @author hmilyylimh * * @version 0.0.1 * * @date 17/10/18 * */ @SpringBootApplication public class MsSimpleProviderUserDevtoolsApplication { public static void main(String[] args) { SpringApplication.run(MsSimpleProviderUserDevtoolsApplication.class, args); System.out.println("【【【【【【 简单用户微服务(热部署) 】】】】】】已启动."); } }
三、测试
/**************************************************************************************** 一、简单用户微服务接口测试: 1、添加 spring-boot-devtools 热部署依赖; 2、pom.xml 添加 <fork>true</fork> 属性; 3、设置 idea 属性:“File” -> “Settings” -> “Build,Execution,Deplyment” -> “Compiler”,选中打勾 “Build project automatically” ; 4、设置 idea 属性:组合键:“Shift+Ctrl+Alt+/” ,选择 “Registry” ,选中打勾 “compiler.automake.allow.when.app.running” ; 5、设置缓存配置 spring.thymeleaf.cache=false; 6、设置 chrome 属性:F12或者“Ctrl+Shift+I”,打开开发者工具,“Network” 选项卡下 选中打勾 “Disable Cache(while DevTools is open)” ; 7、启动 springms-simple-provider-user-devtools 模块服务,启动1个端口; 8、在浏览器输入地址 http://localhost:8305/simple 可以看到信息成功的被打印出来; 9、改动 Controller 某个方法的返回值,或者新增方法,然后会看到控制台自动重启该应用,进行热部署; 10、再在浏览器请求刚刚改动的链接,发现链接返回的内容确实动态改变过来了,这就是热部署; ****************************************************************************************/
四、下载地址
https://gitee.com/ylimhhmily/SpringCloudTutorial.gitSpringCloudTutorial交流QQ群: 235322432
SpringCloudTutorial交流微信群: 微信沟通群二维码图片链接
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