Spring boot 配置 mybatis xml和动态SQL 分页配置

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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