使用idea 開發 springboot 企業項目技巧分享

一、快速開發基礎配置

1. maven自動下載依賴

2. 自動導入包

3. 實時自動編譯

4. 取消大小寫敏感

5. 下載maven源碼

二、SpringBoot集成Myabtis

2.1. pom 依賴

      <dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>2.1.2</version>
        </dependency>

2.2. yml配置

mybatis:
  configuration:
    map-underscore-to-camel-case: true
    # 控制檯日誌配置
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  mapper-locations: classpath:mappers/*.xml

2.3. 啓動類+掃描mapper包註解

package com.gblfy;

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

@SpringBootApplication
@MapperScan(basePackages = "com.gblfy.mapper")
public class DemoApplication {

    public static void main(String[] args) {
        SpringApplication.run(DemoApplication.class, args);
    }
}

三、集成Mybatis Generator

3.1. 插件集成

官網鏈接：https://mybatis.org/generator/running/runningWithMaven.html

<build>
        <plugins>
            <!--maven插件-->
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <!--代碼生成插件-->
            <plugin>
                <groupId>org.mybatis.generator</groupId>
                <artifactId>mybatis-generator-maven-plugin</artifactId>
                <version>1.3.7</version>
                <!--代碼生成重新覆蓋-->
                <configuration>
                    <overwrite>true</overwrite>
                </configuration>
            </plugin>
        </plugins>
    </build>

3.2. 新建generatorConfig.xml文件

在resources目錄下面
內容如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
        PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
        "http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">

<generatorConfiguration>
<!--    windows下路徑, D:/downloads/xxx.jar-->
    <classPathEntry location="C:/Users/Administrator/Desktop/demo/tools/mysql-connector-java-5.1.6.jar" />

    <context id="DB2Tables" targetRuntime="MyBatis3">

<!--        不再追加xml內容-->
        <plugin type="org.mybatis.generator.plugins.UnmergeableXmlMappersPlugin" />

        <commentGenerator>
            <property name="suppressAllComments" value="true"/>
        </commentGenerator>

        <jdbcConnection driverClass="com.mysql.jdbc.Driver"
                        connectionURL="jdbc:mysql://127.0.0.1:3306/mall?characterEncoding=utf-8"
                        userId="root"
                        password="root">
        </jdbcConnection>

        <javaTypeResolver >
            <property name="forceBigDecimals" value="false" />
        </javaTypeResolver>

        <javaModelGenerator targetPackage="com.gblfy.mall.pojo" targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
<!--            <property name="trimStrings" value="true" />-->
        </javaModelGenerator>

        <sqlMapGenerator targetPackage="mappers"  targetProject="src/main/resources">
            <property name="enableSubPackages" value="true" />
        </sqlMapGenerator>

        <javaClientGenerator type="XMLMAPPER" targetPackage="com.gblfy.mall.dao"  targetProject="src/main/java">
            <property name="enableSubPackages" value="true" />
        </javaClientGenerator>

        <table tableName="mall_shipping" domainObjectName="Shipping" enableCountByExample="false" enableDeleteByExample="false" enableSelectByExample="false" enableUpdateByExample="false"/>

    </context>
</generatorConfiguration>

注：Mybatis Generator 配置詳解

3.3. 下載mysql驅動

mysql-connector-java-5.1.6.jar

3.4. 配置mysql驅動jar路徑

在generatorConfig.xml文件中配置

3.5. 創建數據庫+初始化表結構

數據庫名：mall
編碼：utf-8

3.6. 運行插件生成代碼

或者載命令行執行以下命令：

mvn mybatis-generator:generate