Third service providers and service consumers

I. The concept of service providers and service consumers

Service provider: The callee of the service (that is, a service that serves other services)
Service consumer: The caller of a service (that is, a service that relies on other services) Ii. writing a service provider (auto-build framework: http://start.spring.io/) Build Service provider framework import projects into the IDE
Configuring the Maven repository to modify MAVEN's original settings file:

To configure the local warehouse path:

<localRepository>E:\JAVA\apache-maven-3.3.9\conf\</localRepository>

Configure the image of Alibaba Cloud

<mirror>
  <id>nexus-aliyun</id>
  <mirrorOf>central</mirrorOf>
  <name >nexus aliyun</name>
  <url>http://maven.aliyun.com/nexus/content/groups/public</url>
</mirror>

Code Controller:

Package Cn.com.yeexun.cloud.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 Cn.com.yeexun.cloud.dao.UserDao;
Import Cn.com.yeexun.cloud.entity.User;

@RestController public
class Usercontroller {

  @Autowired
  private Userdao Userdao;

  @GetMapping ("/simple/{id}") Public
  User FindByID (@PathVariable Long id)
  {
    return Userdao.findone (ID) ;
  }
}

Dao:

Package Cn.com.yeexun.cloud.dao;

Import org.springframework.data.jpa.repository.JpaRepository;
Import org.springframework.stereotype.Repository;
Import Cn.com.yeexun.cloud.entity.User;

@Repository public
Interface Userdao extends Jparepository<user, long> {
}

Entity:

Package cn.com.yeexun.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 id;
    } public void SetId (long id) {this.id = ID;
    } public String GetUserName () {return username;
    } public void Setusername (String username) {this.username = username;
    } public String GetName () {return name;
    } public void SetName (String name) {this.name = name;
    } public short Getage () {return age; } public void SETage (short age) {this.age = age;
    } public BigDecimal GetBalance () {return balance;
    } public void Setbalance (BigDecimal balance) {this.balance = balance;
 }
}

Apllication Startup class:

Package Cn.com.yeexun.cloud;

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

@SpringBootApplication public
class Micoroservicesimpleprovideruserapplication {public

    static void main ( String[] args) {
     springapplication.run (micoroservicesimpleprovideruserapplication.class, args);
    }
}

application.yml:

Server:
  port:7900

Spring:
  JPA:
    generate-ddl:false #启动时是否生成ddl语句
    show-sql:true
    Hibernate :
      ddl-auto:none  #启动时不做ddl语句处理
  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
    Cn.com:DEBUG

Data.sql:

INSERT into user (ID, username, name, age, Balance) VALUES (1, ' user1 ', ' Zhang Yi ', ' 100.00 ');
INSERT into user (ID, username, name, age, Balance) values (2, ' user2 ', ' Wang II ', ' 101.00 ');
INSERT into user (ID, username, name, age, Balance) VALUES (3, ' user3 ', ' Lie Triple ', 102.00);
INSERT into user (ID, username, name, age, Balance) values (4, ' user4 ', ' ma Four ', 24, 103.00);

Schema.sql:

Drop table user if exists;
CREATE TABLE User (
    ID bigint generated by default as identity, 
    username varchar (+),
    name varchar
    , Age int (3),
    balance Decimal (10,2),
    primary key (ID) 
);

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>cn.com.y Eexun.cloud</groupid> <artifactId>micoroservice-simple-provider-user</artifactId> <version& Gt;0.0.1-snapshot</version> <packaging>jar</packaging> <name>micoroservice-simple-provid Er-user</name> <description>demo Project for Spring boot</description> <parent> & Lt;groupid>org.springframework.boot</groupid> <artifactid>spring-boot-starter-parent</ Artifactid> <version>1.5.10.RELEASE</version> <relativePath/> <!--lookup parent F Rom Repository--</