Spring-study（目錄結構+pom.xml的父工程配置）

看完以下內容接着看：https://blog.csdn.net/lgz0921/article/details/104574002

接下來的spring用到的數據庫是Mybatis的數據庫，畢竟要整合呀！

目錄結構：

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>

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

    <groupId>org.example</groupId>
    <artifactId>spring-study</artifactId>
    <packaging>pom</packaging>
    <version>1.0-SNAPSHOT</version>
    <modules>
        <module>spring-01-ioc1</module>
        <module>spring-02-hellospring</module>
        <module>spring-03-ioc2</module>
        <module>spring-04-di</module>
        <module>spring-05-Autowired</module>
        <module>spring-06-anno</module>
        <module>spring-07-appconfig</module>
        <module>spring-08-proxy</module>
        <module>spring-09-aop</module>
        <module>spring-10-mybatis</module>
        <module>spring-11-transaction</module>
    </modules>

    <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>


    <!--在build中配置resources，來防止我們資源導出失敗的問題-->
    <build>
        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.properties</include>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>
</project>

node.md只簡單寫了一點知識點，不需要看。

## 常用依賴
```xml
   <dependencies>
        <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>5.2.3.RELEASE</version>
        </dependency>
        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
        </dependency>
    </dependencies>
```
## 註解說明
- @Autowired:自動裝配通過類型、名字
    如果Autowired不能唯一自動裝配，則需要通過@Qualifier(value="xxx)
- @Nullable:字段標記了這個註解，說明這個字段可以爲null
- @Resource：自動裝配通過名字、類型
- @Component：組件，放在類上，說明這個類被Spring管理了，就是bean！