摘要：添加簡(jiǎn)單用戶微服務(wù)啟動(dòng)類簡(jiǎn)單用戶微服務(wù)類支持熱部署。
SpringCloud（第 038 篇）idea環(huán)境熱部署微服務(wù)開發(fā)
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一、大致介紹
1、我們?cè)陂_發(fā)過程中，會(huì)經(jīng)常需要啟動(dòng)、停止微服務(wù)，而且有時(shí)候會(huì)比較頻繁，需要不停的操作啟停動(dòng)作；
2、而我們本章節(jié)主要講解下如何在開發(fā)環(huán)境中進(jìn)行熱部署，這樣的話可以在一定程度上專心敲代碼，兩耳不聞窗外事，一心只想敲代碼；
二、實(shí)現(xiàn)步驟
2.1 添加 maven 引用包
4.0.0
springms-simple-provider-user-devtools
1.0-SNAPSHOT
jar
com.springms.cloud
springms-spring-cloud
1.0-SNAPSHOT
org.springframework.boot
spring-boot-starter-data-jpa
org.springframework.boot
spring-boot-starter-web
com.h2database
h2
runtime
org.springframework.boot
spring-boot-starter-data-solr
org.springframework.boot
spring-boot-devtools
true
org.springframework.boot
spring-boot-maven-plugin
true
2.2 添加應(yīng)用配置文件（springms-simple-provider-user-devtoolssrcmainresourcesapplication.yml）
server:
port: 8305
spring:
application:
name: springms-simple-provider-user-devtools #全部小寫
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 數(shù)據(jù)庫(kù)腳本（springms-simple-provider-user-devtoolssrcmainresourcesschema.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 數(shù)據(jù)庫(kù)一些初始化數(shù)據(jù)（springms-simple-provider-user-devtoolssrcmainresourcesdata.sql）
INSERT into user (id, username, name, age, balance) values (1, "user1", "張三", 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", "趙六", 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", "張遠(yuǎn)", 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", "關(guān)羽", 30, 100.00);
2.5 添加訪問底層數(shù)據(jù)模型的DAO接口（springms-simple-provider-user-devtoolssrcmainjavacomspringmscloudrepositoryUserRepository.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 {
}
2.6 添加實(shí)體用戶類User（springms-simple-provider-user-devtoolssrcmainjavacomspringmscloudentityUser.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 添加用戶Web訪問層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;
/**
* 用戶微服務(wù)Controller（支持 idea 熱部署）。
*
* @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 添加簡(jiǎn)單用戶微服務(wù)啟動(dòng)類（springms-simple-provider-user-devtoolssrcmainjavacomspringmscloudMsSimpleProviderUserApplication.java）
package com.springms.cloud;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
/**
* 簡(jiǎn)單用戶微服務(wù)類（支持 idea 熱部署）。
*
* @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("【【【【【【 簡(jiǎn)單用戶微服務(wù)（熱部署） 】】】】】】已啟動(dòng).");
}
}
三、測(cè)試
/****************************************************************************************
一、簡(jiǎn)單用戶微服務(wù)接口測(cè)試：
1、添加 spring-boot-devtools 熱部署依賴；
2、pom.xml 添加 true 屬性；
3、設(shè)置 idea 屬性：“File” -> “Settings” -> “Build,Execution,Deplyment” -> “Compiler”，選中打勾 “Build project automatically” ；
4、設(shè)置 idea 屬性：組合鍵：“Shift+Ctrl+Alt+/” ，選擇 “Registry” ，選中打勾 “compiler.automake.allow.when.app.running” ；
5、設(shè)置緩存配置 spring.thymeleaf.cache=false；
6、設(shè)置 chrome 屬性：F12或者“Ctrl+Shift+I”，打開開發(fā)者工具，“Network” 選項(xiàng)卡下 選中打勾 “Disable Cache(while DevTools is open)” ；
7、啟動(dòng) springms-simple-provider-user-devtools 模塊服務(wù)，啟動(dòng)1個(gè)端口；
8、在瀏覽器輸入地址 http://localhost:8305/simple 可以看到信息成功的被打印出來；
9、改動(dòng) Controller 某個(gè)方法的返回值，或者新增方法，然后會(huì)看到控制臺(tái)自動(dòng)重啟該應(yīng)用，進(jìn)行熱部署；
10、再在瀏覽器請(qǐng)求剛剛改動(dòng)的鏈接，發(fā)現(xiàn)鏈接返回的內(nèi)容確實(shí)動(dòng)態(tài)改變過來了，這就是熱部署；
****************************************************************************************/
四、下載地址
https://gitee.com/ylimhhmily/SpringCloudTutorial.git
SpringCloudTutorial交流QQ群: 235322432
SpringCloudTutorial交流微信群: 微信溝通群二維碼圖片鏈接
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