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Spring Cloud 创建一个服务提供者

扒皮狼 2022-08-02 阅读 45


Spring Cloud 创建一个服务提供者


概念

服务提供者:服务的被调用方(即:为其他服务提供服务的服务)

Spring Cloud 创建一个服务提供者_spring


创建服务提供者工程


Spring Cloud 创建一个服务提供者_sql_02


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">
<modelVersion>4.0.0</modelVersion>
<groupId>com.itmuch.cloud</groupId>
<artifactId>microservice-provider-user</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<!-- 引入spring boot的依赖 -->
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.4.3.RELEASE</version>
</parent>

<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<java.version>1.8</java.version>
</properties>

<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>com.h2database</groupId>
<artifactId>h2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-starter-eureka</artifactId>
</dependency>
</dependencies>

<!-- 引入spring cloud的依赖 -->
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>Camden.SR4</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>

<!-- 添加spring-boot的maven插件 -->
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>






服务提供者-ProviderUserApplication


package com.itmuch.cloud.stProviderUserApplicationudy;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.client.discovery.EnableDiscoveryClient;

@EnableDiscoveryClient
@SpringBootApplication
@EnableAutoConfiguration


User

package com.itmuch.cloud.study.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 Integer 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 Integer getAge() {
return this.age;
}

public void setAge(Integer age) {
this.age = age;
}

public BigDecimal getBalance() {
return this.balance;
}

public void setBalance(BigDecimal balance) {
this.balance = balance;
}

}





UserRepository

package com.itmuch.cloud.study.repository;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import com.itmuch.cloud.study.entity.User;

@Repository
public interface UserRepository extends JpaRepository<User, Long> {
}



UserController

package com.itmuch.cloud.study.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 com.itmuch.cloud.study.entity.User;
import com.itmuch.cloud.study.repository.UserRepository;

@RestController
public class UserController {
@Autowired
private UserRepository userRepository;

@GetMapping("/{id}")
public User findById(@PathVariable Long id) {
User findOne = this.userRepository.findOne(id);
return findOne;
}
}




application.yml

server:
port: 8000
spring:
application:
name: microservice-provider-user
jpa:
generate-ddl: false
show-sql: true
hibernate:
ddl-auto: none
datasource: # 指定数据源
platform: h2 # 指定数据源类型
schema: classpath:schema.sql # 指定h2数据库的建表脚本
data: classpath:data.sql # 指定h2数据库的数据脚本
logging: # 配置日志级别,让hibernate打印出执行的SQL
level:
root: INFO
org.hibernate: INFO
org.hibernate.type.descriptor.sql.BasicBinder: TRACE
org.hibernate.type.descriptor.sql.BasicExtractor: TRACE
eureka:
client:
serviceUrl:
defaultZone: http://localhost:8761/eureka/
instance:
prefer-ip-address: true





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));



data.sql

insert into user (id, username, name, age, balance) values (1, 'account1', '张三', 20, 100.00);
insert into user (id, username, name, age, balance) values (2, 'account2', '李四', 28, 180.00);
insert into user (id, username, name, age, balance) values (3, 'account3', '王五', 32, 280.00);



启动用户服务提供者

Spring Cloud 创建一个服务提供者_spring_03


查看注册中心

Spring Cloud 创建一个服务提供者_java_04


访问测试

Spring Cloud 创建一个服务提供者_sql_05

Spring Cloud 创建一个服务提供者_java_06









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