更新时间 2018年4月30日23:27:07

1.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>com.imooc</groupId>

    <artifactId>sell</artifactId>

    <version>0.0.1-SNAPSHOT</version>

    <packaging>jar</packaging>

    <name>sell</name>

    <description>Demo project for Spring Boot</description>

    <parent>

        <groupId>org.springframework.boot</groupId>

        <artifactId>spring-boot-starter-parent</artifactId>

        <version>1.5.3.RELEASE</version>

        <relativePath/> <!-- lookup parent from repository -->

    </parent>

    <properties>

        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>

        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>

        <java.version>1.8</java.version>

    </properties>

    <dependencies>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-web</artifactId>

        </dependency>

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-starter-test</artifactId>

            <scope>test</scope>

        </dependency>

        <!-- mybatis配置 -->

        <dependency>

            <groupId>org.mybatis.spring.boot</groupId>

            <artifactId>mybatis-spring-boot-starter</artifactId>

            <version>1.3.2</version>

        </dependency>

        <!--数据库链接-->

        <dependency>

            <groupId>mysql</groupId>

            <artifactId>mysql-connector-java</artifactId>

        </dependency>

        <!--热启动-->

        <dependency>

            <groupId>org.springframework.boot</groupId>

            <artifactId>spring-boot-devtools</artifactId>

            <optional>true</optional>

        </dependency>

        <!--分页-->

        <dependency>

            <groupId>com.github.pagehelper</groupId>

            <artifactId>pagehelper-spring-boot-starter</artifactId>

            <version>1.2.5</version>

            <exclusions>

                <exclusion>

                    <groupId>org.mybatis.spring.boot</groupId>

                    <artifactId>mybatis-spring-boot-starter</artifactId>

                </exclusion>

            </exclusions>

        </dependency>

    </dependencies>

    <build>

        <plugins>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

            </plugin>

            <plugin>

                <groupId>org.springframework.boot</groupId>

                <artifactId>spring-boot-maven-plugin</artifactId>

                <!-- 热部署 -->

                <configuration>

                    <fork>true</fork>

                </configuration>

            </plugin>

        </plugins>

    </build>

</project>

2.配置 application.yml

spring:

  datasource:

    driver-class-name: com.mysql.jdbc.Driver

    username: root

    password: 123456

    url: jdbc:mysql://127.0.0.1/tpshop2.5.0?characterEncoding=utf-8&useSSL=false

  jpa:

    show-sql: true

mybatis:

  config-locations: classpath:mybatis/mybatis-config.xml

  mapper-locations: classpath:mapper/*.xml

  configuration:

    call-setters-on-nulls: true

    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

pagehelper:

    helperDialect: mysql

    reasonable: true

    supportMethodsArguments: true

    params: count=countSql

3.配置Application.java 启动

@SpringBootApplication

@MapperScan("com.smartom.dao")    //扫描dao层

public class MyApp {

    public static void main(String[] args) throws Exception{

        SpringApplication.run(MyApp.class,args);

    }

}

4. Controller层

    @GetMapping("/list")

    public PageInfo<ProductListVO> getList(

            @RequestParam(value="current",defaultValue = "1") Integer current,

            @RequestParam(value="pageSize",defaultValue = "10")Integer pageSize

    ){

        PageInfo<ProductListVO> productList =  iProductService.getProductList(current,pageSize);

        return productList;

    }

5.service层

    @Override

    public PageInfo<ProductListVO> getProductList(Integer current, Integer pageSize) {

        PageHelper.startPage(current,pageSize);

        Page<ProductListVO> ProductListVO = productsMapper.getProductList();

        Integer total = productsMapper.productsTotal();

        PageInfo<ProductListVO> pageInfo = new PageInfo(current,pageSize,total,ProductListVO);

        return pageInfo;

    }

6.dao层

public interface ProductsMapper {

    @Select("select product_name from product_info where goods_id = #{goods_id}")

    public ProductVO getProductInfo(@Param("goods_id") int goods_id);

    public Page<ProductListVO> getProductList();

    @Select("select count(*) total from tp_goods")

    Integer productsTotal();

}

7.mapper

<?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.smartom.dao.ProductsMapper">

    <select id="getProductList" resultType="com.smartom.VO.ProductListVO">

        select goods_id,goods_name,goods_sn,cat_id,price_ladder,is_recommend,is_new,is_hot,is_on_sale,store_count,sort from

        tp_goods

    </select>

</mapper>

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