摘要：添加用戶接口類實(shí)現(xiàn)類簡單用戶鏈接數(shù)據(jù)庫微服務(wù)通過注解標(biāo)注該類為持久化操作對象。添加一個(gè)使用接收請求添加微服務(wù)啟動(dòng)類鏈接數(shù)據(jù)庫簡單的集成框架采用訪問數(shù)據(jù)庫。

-

1、前面章節(jié)講解的是在方法上面添加sql語句操作，雖然說僅僅只是一種簡單的操作，在測試期間可以多試試；
2、但是對于復(fù)雜的操作，那種簡單也僅僅只是簡單的自己用用而已，復(fù)雜的還是得采用xml配置；
3、因此本章節(jié)就試試采用Mybatis框架通過mapperxml進(jìn)行對數(shù)據(jù)的操作；

    4.0.0

    springms-provider-user-mysql-mybatis-mapper
    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
        

        
        
            mysql
            mysql-connector-java
        

        
        
            org.mybatis.spring.boot
            mybatis-spring-boot-starter
            1.3.1
        

        
        
            
            
        
    

server:
  port: 8330
spring:
  application:
    name: springms-provider-user-mysql-mybatis-mapper  #全部小寫


#####################################################################################################
# mysql 屬性配置
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql://ip:3306/hmilyylimh
    username: username
    password: password
#  jpa:
#    hibernate:
#      #ddl-auto: create #ddl-auto:設(shè)為create表示每次都重新建表
#      ddl-auto: update #ddl-auto:設(shè)為update表示每次都不會(huì)重新建表
#    show-sql: true
#####################################################################################################

#####################################################################################################
# mybatis mapper xml 配置
mybatis:
  # mybatis.type-aliases-package：指定domain類的基包，即指定其在*Mapper.xml文件中可以使用簡名來代替全類名（看后邊的UserMapper.xml介紹）
  type-aliases-package:
  mapper-locations: classpath:mybatis/mapper/*.xml
  config-location: classpath:mybatis/mybatis-config.xml
#####################################################################################################

#####################################################################################################
# 打印日志
logging:
  level:
    root: INFO
    org.hibernate: INFO
    org.hibernate.type.descriptor.sql.BasicBinder: TRACE
    org.hibernate.type.descriptor.sql.BasicExtractor: TRACE
    com.springms: DEBUG
#####################################################################################################

    
        
        
        
        
        
    


    
    
        
    

    
        select * from user
        where id = #{id,jdbcType=BIGINT}
    

    
        select * from user
    

package com.springms.cloud.entity;

public class User {

  private Long id;

  private String username;

  private String name;

  private Integer age;

  private String 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 String getBalance() {
    return this.balance;
  }

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

package com.springms.cloud.mapper;

import com.springms.cloud.entity.User;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

/**
 * 用戶 mybatis 接口文件。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017-10-19
 *
 */
public interface IUserMapper {

    User findUserById(Long id);

    List findAllUsers();

    int insertUser(User user);
}

package com.springms.cloud.dao;

import com.springms.cloud.entity.User;

import java.util.List;

/**
 * 簡單用戶鏈接Mysql數(shù)據(jù)庫微服務(wù)（通過@Repository注解標(biāo)注該類為持久化操作對象）。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017-10-19
 *
 */
public interface IUserDao {

    User findUserById(Long id);

    List findAllUsers();

    int insertUser(User user);
}

package com.springms.cloud.dao.impl;

import com.springms.cloud.dao.IUserDao;
import com.springms.cloud.entity.User;
import com.springms.cloud.mapper.IUserMapper;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

import java.util.List;

/**
 * 簡單用戶鏈接Mysql數(shù)據(jù)庫微服務(wù)（通過@Repository注解標(biāo)注該類為持久化操作對象）。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017-10-19
 *
 */
@Repository
public class UserDaoImpl implements IUserDao {

    @Autowired
    private IUserMapper iUserMapper;

    @Override
    public User findUserById(Long id) {
        return iUserMapper.findUserById(id);
    }

    @Override
    public List findAllUsers() {
        return iUserMapper.findAllUsers();
    }

    @Override
    public int insertUser(User user) {
        return iUserMapper.insertUser(user);
    }
}

package com.springms.cloud.service;

import com.springms.cloud.entity.User;

import java.util.List;

/**
 * 簡單用戶鏈接Mysql數(shù)據(jù)庫微服務(wù)（通過@Service注解標(biāo)注該類為持久化操作對象）。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017-10-19
 *
 */
public interface IUserService {

    User findUserById(Long id);

    List findAllUsers();

    int insertUser(User user);
}

package com.springms.cloud.service.impl;

import com.springms.cloud.dao.IUserDao;
import com.springms.cloud.entity.User;
import com.springms.cloud.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 * 簡單用戶鏈接Mysql數(shù)據(jù)庫微服務(wù)（通過@Service注解標(biāo)注該類為持久化操作對象）。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017-10-19
 *
 */
@Service
public class UserServiceImpl implements IUserService {

    @Autowired
    IUserDao iUserDao;

    @Override
    public User findUserById(Long id) {
        return iUserDao.findUserById(id);
    }

    @Override
    public List findAllUsers() {
        return iUserDao.findAllUsers();
    }

    @Override
    public int insertUser(User user) {
        return iUserDao.insertUser(user);
    }
}

package com.springms.cloud.controller;

import com.springms.cloud.entity.User;
import com.springms.cloud.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * 用戶微服務(wù)Controller。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017-10-19
 *
 */
@RestController
public class ProviderUserMysqlMybatisMapperController {

    @Autowired
    private IUserService iUserService;

    @GetMapping("/simple/{id}")
    public User findUserById(@PathVariable Long id) {
        return this.iUserService.findUserById(id);
    }

    @GetMapping("/simple/list")
    public List findUserList() {
        return this.iUserService.findAllUsers();
    }

    /**
     * 添加一個(gè)student,使用postMapping接收post請求
     *
     * http://localhost:8330/simple/addUser?username=user11&age=11&balance=11
     *
     * @return
     */
    @PostMapping("/simple/addUser")
    public User addUser(@RequestParam(value = "username", required=false) String username, @RequestParam(value = "age", required=false) Integer age, @RequestParam(value = "balance", required=false) String balance){
        User user=new User();

        user.setUsername(username);
        user.setName(username);
        user.setAge(age);
        user.setBalance(balance);

        int result = iUserService.insertUser(user);
        if(result > 0){
            return user;
        }

        user.setId(0L);
        user.setName(null);
        user.setUsername(null);
        user.setBalance(null);
        return user;
    }
}

package com.springms.cloud;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * 鏈接Mysql數(shù)據(jù)庫簡單的集成Mybatis框架采用MapperXml訪問數(shù)據(jù)庫。
 *
 * @author hmilyylimh
 *
 * @version 0.0.1
 *
 * @date 2017-10-19
 *
 */
@SpringBootApplication
@MapperScan("com.springms.cloud.mapper.**")
public class MsProviderUserMysqlMybatisMapperApplication {

    public static void main(String[] args) {
        SpringApplication.run(MsProviderUserMysqlMybatisMapperApplication.class, args);
        System.out.println("【【【【【【 鏈接MysqlMybatisMapperXml數(shù)據(jù)庫微服務(wù) 】】】】】】已啟動(dòng).");
    }
}

/****************************************************************************************
 注意：Mybatis 需要加上 entity 等注解才可以使用，不然啟動(dòng)都會(huì)報(bào)錯(cuò)；
 @MapperScan("com.springms.cloud.mapper.**") 或者在每個(gè) Mapper 接口文件上添加 @Mapper 也可以；

 一、簡單用戶鏈接Mysql數(shù)據(jù)庫微服務(wù)（通過 mybatis 鏈接 mysql 并用 MapperXml 編寫數(shù)據(jù)訪問）：

 1、啟動(dòng) springms-provider-user-mysql-mybatis-mapper 模塊服務(wù)，啟動(dòng)1個(gè)端口；
 2、在瀏覽器輸入地址 http://localhost:8330/simple/10 可以看到用戶ID=10的信息成功的被打印出來；

 3、使用 IDEA 自帶工具 Test Restful WebService 發(fā)送 HTTP POST 請求,并添加 username、age、balance三個(gè)參數(shù)，然后執(zhí)行請求，并去 mysql 數(shù)據(jù)庫查看數(shù)據(jù)是否存在，正常情況下 mysql 數(shù)據(jù)庫剛剛插入的數(shù)據(jù)成功了:
 4、使用 REST Client 執(zhí)行 "/simple/list" 接口，也正常將 mysql 數(shù)據(jù)庫中所有的用戶信息打印出來了；
 ****************************************************************************************/

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