SpringCloud（第 001 篇）简单用户微服务

摘要：第篇简单用户微服务一大致介绍通过接口来简单获取数据库中的用户信息，并且数据库中的字段与实体类的字段相互映射。添加简单用户微服务启动类简单用户微服务类。

-

通过 RestAPI 接口 /simple/{id} 来简单获取 H2 数据库中的用户信息，并且数据库中的字段与实体 User 类的字段相互映射 。

    4.0.0

    springms-simple-provider-user
    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
        
    

server:
  port: 8000
spring:
  application:
    name: springms-simple-provider-user  #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
logging:
  level:
    root: INFO
    org.hibernate: INFO
    org.hibernate.type.descriptor.sql.BasicBinder: TRACE
    org.hibernate.type.descriptor.sql.BasicExtractor: TRACE
    com.springms: DEBUG

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)
);

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);

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 {

}

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;
  }
}

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。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017/9/17
 *
 */
@RestController
public class MsSimpleProviderUserController {

    @Autowired
    private UserRepository userRepository;

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

package com.springms.cloud;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * 简单用户微服务类。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017/9/17
 *
 */
@SpringBootApplication
public class MsSimpleProviderUserApplication {

    public static void main(String[] args) {
        SpringApplication.run(MsSimpleProviderUserApplication.class, args);
        System.out.println("【【【【【【 简单用户微服务 】】】】】】已启动.");
    }
}

/****************************************************************************************
 一、简单用户微服务接口测试：

 1、启动 springms-simple-provider-user 模块服务，启动1个端口；
 2、在浏览器输入地址 http://localhost:8000/simple/1 可以看到信息成功的被打印出来。；
 ****************************************************************************************/

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