1、環境準備

      idea 2018、mysql、jdk1.8

2、idea建立springBoot專案（網上步驟很多）

      idea建立專案時可以選擇web、mybatis、mysql，這樣idea會自動載入其jar包；

     但是還需要mybatis-plus的jar包：點這裡提供

     專案結構：

3、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.xsy.sbmp</groupId>
    <artifactId>springbmp</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

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

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.3.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>com.baomidou</groupId>
            <artifactId>mybatisplus-spring-boot-starter</artifactId>
            <version>1.0.2</version>
            <scope>system</scope>
            <systemPath>${basedir}/lib/mybatisplus-spring-boot-starter-1.0.2.jar</systemPath>
        </dependency>
        <dependency>
            <groupId>com.baomidou</groupId>
            <artifactId>mybatis-plus</artifactId>
            <version>2.1.0</version>
            <scope>system</scope>
            <systemPath>${basedir}/lib/mybatis-plus-2.1.0.jar</systemPath>
        </dependency>
        <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>
 

4、application.properties:

#server port
server.port=8080

#mysql datasource
spring.datasource.url=jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=false
spring.datasource.username=
spring.datasource.password=
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

#logger
logging.level.com.xsy.sbmp.springbmp.dao=debug

#mapper.xml location
mybatis-plus.mapper-locations=classpath*:mapper/*.xml

#entity location
mybatis-plus.type-aliases-package=com.xsy.sbmp.springbmp.entity


 

5、mybatisplus配置：

@Configuration
public class MybatisPlusConfig {

    @Bean
    public PaginationInterceptor paginationInterceptor(){
        PaginationInterceptor page = new PaginationInterceptor();

        //設定方言
        page.setDialectType("mysql");
        return page;
    }
}

6、建立實體類、dao介面、mapper.xml、service、serviceImpl、controller

實體類中欄位和資料庫欄位不一致時：@TableField("");

dao介面需要： dao介面類上需要@Repository @Mapper註解

                          還需要在springBoot啟動類上jiar加上註解:@MapperScan("dao路徑")

mapper.xml所有檔案放到 resources資料夾下，即和application.properties同目錄，否則會載入不了；

其他都和ssm時一樣