Spring Boot 2.0快速构建服务组件全步骤

public interface userservice{

  // todo ...

}

@service (value= "userservice" )

public class userserviceimpl implements userservice{

  //todo ...

}

@controller

public class democontroller{

  @autowired

  userservice userservice;

  //todo ...

}

package com.ramostear.application.service;

import com.ramostear.application.model.user;

import java.util.collection;

/**

  * created by ramostear on 2019/3/11 0011.

  */

public interface userservice {

  /**

  * create user

  * @param user

  */

  void create(user user);

  /**

  * update user info by id

  * @param id

  * @param user

  */

  void update( long id,user user);

  /**

  * delete user by id

  * @param id

  */

  void delete( long id);

  /**

  * query all user

  * @return

  */

  collection<user> findall();

}

package com.ramostear.application.service.impl;

import com.ramostear.application.model.user;

import com.ramostear.application.service.userservice;

import org.springframework.stereotype.service;

import javax.annotation.postconstruct;

import java.util.collection;

import java.util.hashmap;

import java.util.map;

/**

  * @author ramostear

  * @create-time 2019/3/11 0011-4:29

  * @modify by :

  * @since:

  */

@service (value= "userservice" )

public class userserviceimpl implements userservice {

  private static map< long ,user> userrepo = new hashmap<>();

  @postconstruct

  public void inituserrepo(){

  user admin = new user();

  admin.setid( 1 ).setname( "admin" );

  userrepo.put(admin.getid(),admin);

  user editor = new user();

  editor.setid( 2 ).setname( "editor" );

  userrepo.put(editor.getid(),editor);

  }

  @override

  public void create(user user) {

  userrepo.put(user.getid(),user);

  }

  @override

  public void update( long id, user user) {

  userrepo.remove(id);

  user.setid(id);

  userrepo.put(id,user);

  }

  @override

  public void delete( long id) {

  userrepo.remove(id);

  }

  @override

  public collection<user> findall() {

  return userrepo.values();

  }

}

package com.ramostear.application.controller;

import com.ramostear.application.model.user;

import com.ramostear.application.service.userservice;

import org.springframework.beans.factory.annotation.autowired;

import org.springframework.http.httpstatus;

import org.springframework.http.responseentity;

import org.springframework.web.bind.annotation.*;

/**

  * @author ramostear

  * @create-time 2019/3/11 0011-4:42

  * @modify by :

  * @since:

  */

@restcontroller

public class usercontroller {

  @autowired

  userservice userservice;

  @getmapping ( "/users" )

  public responseentity<object> users(){

  return new responseentity<>(userservice.findall(), httpstatus.ok);

  }

  @postmapping ( "/users" )

  public responseentity<object> create( @requestbody user user){

  userservice.create(user);

  return new responseentity<>( "user is created successfully." ,httpstatus.created);

  }

  @putmapping ( "/users/{id}" )

  public responseentity<object> update( @pathvariable (name= "id" ) long id, @requestbody user user){

  userservice.update(id,user);

  return new responseentity<>( "user is updated successfully." ,httpstatus.ok);

  }

  @deletemapping ( "/users/{id}" )

  public responseentity<object> delete( @pathvariable (name = "id" ) long id){

  userservice.delete(id);

  return new responseentity<>( "user is deleted successfully." ,httpstatus.ok);

  }

}

package com.ramostear.application.model;

import lombok.getter;

import lombok.noargsconstructor;

import lombok.setter;

/**

  * @author ramostear

  * @create-time 2019/3/6 0006-3:12

  * @modify by :

  * @since:

  */

@getter

@setter

@noargsconstructor

public class user {

  private long id;

  private string name;

  public user setid( long id){

  this .id = id;

  return this ;

  }

  public user setname(string name){

  this .name = name;

  return this ;

  }

}