用SpringCloud Alibaba搭建属于自己的微服务(七)~基础搭建~springboot整合druid和mybatisPlus

一.pom文件

1.ccm-server.pom

<dependencyManagement>
        <dependencies>
            
            <dependency>
                <groupId>mysqlgroupId>
                <artifactId>mysql-connector-javaartifactId>
                <version>8.0.15version>
            dependency>
            <dependency>
                <groupId>com.alibabagroupId>
                <artifactId>druid-spring-boot-starterartifactId>
                <version>1.1.23version>
            dependency>
            
            <dependency>
                <groupId>com.baomidougroupId>
                <artifactId>mybatis-plus-boot-starterartifactId>
                <version>3.2.0version>
            dependency>
        dependencies>
    dependencyManagement>

dependencyManagement标签的作用是声明版本,但是不实际引入依赖,在子工程中我们引入的依赖就无需声明版本了,起到统一版本管理的作用.

2.assembly-mysql.pom

<dependencies>
   <dependency>
        <groupId>mysqlgroupId>
        <artifactId>mysql-connector-javaartifactId>
    dependency>
    <dependency>
        <groupId>com.baomidougroupId>
        <artifactId>mybatis-plus-boot-starterartifactId>
    dependency>
    <dependency>
        <groupId>com.alibabagroupId>
        <artifactId>druid-spring-boot-starterartifactId>
    dependency>
dependencies>

3.server-user.pom

<dependencies>
    <dependency>
        <groupId>com.ccmgroupId>
        <artifactId>assembly-mysqlartifactId>
        <version>1.0.0version>
    dependency>
dependencies>

二.配置文件

server:
  port: 1000  #服务端口
spring:
  application:
    name: server-user #服务名称
  datasource:
    username: root
    password: Test2016@
    url: jdbc:mysql://ip:3306/user?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=GMT%2B8&autoReconnect=true
    type: com.alibaba.druid.pool.DruidDataSource
mybatis-plus:
  typeAliasesPackage: com.ccm.server.user.dao.mysql.domain  #数据库实体类包
  mapper-locations: classpath:mappering/*.xml #xml文件扫描

三.配置代码

package com.ccm.server.user;

import com.baomidou.mybatisplus.extension.plugins.PaginationInterceptor;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.Import;

/**
 * @Description server-user服务启动类
 * @Author zhouzhiwu
 * @CreateTime 2020/07/04 0:50
 */
@MapperScan(basePackages = "com.ccm.server.user.dao.mysql.mapper")
@SpringBootApplication //声明为一个启动类
@Import(value = PaginationInterceptor.class)
public class ServerUserApplication {
    public static void main(String[] args) {
        SpringApplication.run(ServerUserApplication.class,args);
    }
}

@MapperScab注解声明要扫描的mapper对象所在包
@Import注解的功能是往spring的ioc容器中注入bean,显然我们注入了一个分页拦截器.

四.代码测试

1.controller

// An highlighted block
package com.ccm.server.user.controller;

import com.ccm.server.user.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 *  @Description 测试控制层
 *  @Author zhouzhiwu
 *  @CreateTime 2020/07/06 14:37
 */
@RestController
@RequestMapping(value = "test")
public class TestController {

    @Autowired
    private TestService testService;

    /**
     * @Description springboot整合mybatis-plus和druid测试
     * @Author zhouzhiwu
     * @CreateTime 2020/7/6 14:38
     * @Params []
     * @Return void
     */
    @GetMapping(value = "test01")
    public Object test01() {
        return testService.test01();
    }

    /**
     * @Description springboot整合mybatis-plus分页插件测试
     * @Author zhouzhiwu
     * @CreateTime 2020/7/7 14:55
     * @Params []
     * @Return java.lang.Object
     */
    @GetMapping(value = "test02")
    public Object test02() {
        return testService.test02();
    }
}

2.service

package com.ccm.server.user.service.impl;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ccm.server.user.dao.mysql.domain.TestTable;
import com.ccm.server.user.dao.mysql.mapper.TestTableMapper;
import com.ccm.server.user.service.TestService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

/**
 *  @Description 测试业务层实现
 *  @Author zhouzhiwu
 *  @CreateTime 2020/07/06 14:43
 */
@Service
public class TestServiceImpl implements TestService {

    @Autowired
    private TestTableMapper testTableMapper;

    @Override
    public List<TestTable> test01() {
        return testTableMapper.list();
    }

    @Override
    public Page<TestTable> test02() {
        Page<TestTable> page = new Page<>(1, 10);
        List<TestTable> records = testTableMapper.page(page);
        page.setRecords(records);
        return page;
    }
}

3.dao

package com.ccm.server.user.dao.mysql.mapper;

import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.ccm.server.user.dao.mysql.domain.TestTable;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

/**
 *  @Description testtable业务层
 *  @Author zhouzhiwu
 *  @CreateTime 2020/07/06 14:40
 */
@Mapper
public interface TestTableMapper {
    List<TestTable> list();

    List<TestTable> page(Page<TestTable> page);
}

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.ccm.server.user.dao.mysql.mapper.TestTableMapper" >
    <select id="list" resultType="com.ccm.server.user.dao.mysql.domain.TestTable">
        select * from test_table
    </select>
    <select id="page" resultType="com.ccm.server.user.dao.mysql.domain.TestTable">
        select * from test_table
    </select>
</mapper>

4.domain

package com.ccm.server.user.dao.mysql.domain;

import lombok.Data;

/**
 *  @Description test_table表实体类
 *  @Author zhouzhiwu
 *  @CreateTime 2020/07/06 14:42
 */
@Data
public class TestTable {
    private Long id;
    private String name;
}

五.测试

源码地址:https://gitee.com/chouchimoo/ccm-mall.git(本章节分支:zj-7)