微服务模块
① 建moudle ② 改pom ③ 写YML ④ 主启动 ⑤ 业务类
1、cloud-provider-payment8001微服务提供者支付Module模块
新建moudle：cloud-provider-payment8001
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.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><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>
application.yml
spring:
application:
name: cloud-payment-service
datasource:
type: com.alibaba.druid.pool.DruidDataSource #当前数据源操作类型
driver-class-name: com.mysql.cj.jdbc.Driver #mysql驱动包，用的是8.0
url: jdbc:mysql://localhost:3306/mybatis_3305?characterEncoding=utf8&useSSL=false&serverTimezone=UTC&rewriteBatchedStatements=true
username: root
password: 123456
mybatis:
mapper-locations: classpath:mapper/*.xml
type-aliases-package: com.holden.springcloud.entities #所有的Entity别名所在包
PaymentMain8001
@SpringBootApplication
public class PaymentMain8001 {
public static void main(String[] args) {
SpringApplication.run(PaymentMain8001.class,args);
}
}
2、业务类
建表sql
CREATE TABLE payment (
id BIGINT(20) NOT NULL AUTO_INCREMENT COMMENT ID,
'serial' VARCHAR(200) DEFAULT,
PRIMARY KEY(id)
) ENGINE=INNODB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8
Payment.java
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Payment implements Serializable {
private Long id;
private String serial;
}
CommonResult.java
@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);
}
}
PaymentDao.java
@Mapper
public interface PaymentDao {
public int create(Payment payment);
public Payment getPaymentById(@Param("id") Long id);
}
PaymentMapper.xml
<?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.holden.springcloud.dao.PaymentDao">
<insert id="create" parameterType="Payment" useGeneratedKeys="true" keyProperty="id">
insert into payment(serial) values(#{serial});
</insert>
<resultMap id="BaseResultMap" type="com.holden.springcloud.entities.Payment">
<id column="id" property="id" jdbcType="BIGINT"/>
<result column="serial" property="serial" jdbcType="VARCHAR"/>
</resultMap>
<select id="getPaymentById" parameterType="long" resultMap="BaseResultMap">
select * from payment where id = #{id};
</select>
</mapper>
PaymentServiceImpl.java
@Service
public class PaymentServiceImpl implements PaymentService {
@Resource
private PaymentDao paymentDao;
@Override
public int create(Payment payment) {
return paymentDao.create(payment);
}
@Override
public Payment getPaymentById(Long id) {
return paymentDao.getPaymentById(id);
}
}
PaymentController.java
@RestController
@Slf4j
public class PaymentController {
@Resource
private PaymentService paymentService;
@PostMapping(value = "/payment/create")
public CommonResult creat(Payment payment) {
int result = paymentService.create(payment);
log.info("*****插入结果：" + result);
if (result > 0) {
return new CommonResult(200, "插入数据库成功", result);
} else {
return new CommonResult(404, "插入数据库失败", null);
}
}
@GetMapping(value = "/payment/get/{id}")
public CommonResult getPaymentById(@PathVariable("id") Long id) {
Payment payment = paymentService.getPaymentById(id);
log.info("*****插入结果：" + payment);
if (payment != null) {
return new CommonResult(200, "查询成功", payment);
} else {
return new CommonResult(404, "没有对应记录，查询ID"+id, null);
}
}
}
测试
运行：
通过修改idea的workpace.xml的方式来快速打开Run DashBoard窗口
开启Run DashBoard
部分同学可能由于idea版本不同，需要关闭重启
3、热部署
在paymeng8001中pom.xml添加
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
在父工程中添加插件（前面配置父工程pom已添加）
ctrl + alt + shift + /
若未实时生效，配合ctrl + F9
4、cloud-consumer-order80微服务消费者订单Module模块
新建moudle cloud-consumer-order80
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>
主启动类
@SpringBootApplication
public class OrderMain80 {
public static void main(String[] args) {
SpringApplication.run(OrderMain80.class,args);
}
}
Payment.java和CommonResult.java与cloud-provider-payment8001的一致
Resttemplate**
- 提供了多种便捷访问远程Http服务的方法
是一种简单边界的访问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接口非常的简单粗暴无脑。
- (url,requestMap,ResponseBean.class)这三个参数分别代表REST请求地址、请求参数、HTTP响应转换器被换成的对象类型
ApplicationContextConfig.java
@Configuration
public class ApplicationContextConfig {
@Bean
public RestTemplate getRestTemplate(){
return new RestTemplate();
}
}
OrderController.java
@Slf4j
@RestController
public class OrderController {
public static final String PAYMENT_URL = "http://localhost:8001";
@Resource
private RestTemplate restTemplate;
@GetMapping("/consumer/payment/create")
public CommonResult<Payment> create(Payment payment){
return restTemplate.postForObject(PAYMENT_URL+"/payment/create",payment,CommonResult.class);
}
@GetMapping("/consumer/payment/get/{id}")
public CommonResult<Payment> getPayment(@PathVariable("id") Long id){
return restTemplate.getForObject(PAYMENT_URL+"/payment/get/"+id,CommonResult.class);
}
}
如果出现端口被占用，参考下面博客
PaymentController$create不要忘记加@RequestBody
老师说的Run Dashboard，在2019.3版本实则是Services
选择里面的springboot即可
5、工程重构
新建moudle cloud-api-commons
pom.xml
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.1.0</version>
</dependency>
</dependencies>
抽取公共部分实体类
mvn：clean、mvn：install
80、8001添加依赖
<!-- 引入自己定义的api通用包，可以使用Payment支付Entity -->
<dependency>
<groupId>com.holden.springcloud</groupId>
<artifactId>cloud-api-commons</artifactId>
<version>${project.version}</version>
</dependency>
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