springboot新建專案，pom檔案報錯，依賴包的版本丟失：

[INFO] Scanning for projects...
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-web:jar is missing. @ line 18, column 21
[ERROR] 'dependencies.dependency.version'
 
 for org.springframework.boot:spring-boot-starter-tomcat:jar is missing. @ line 30, column 15
[ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-redis:jar is missing. @ line 40, column 15
[ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-jdbc:jar is
 
 missing. @ line 55, column 15
[ERROR] 'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-data-jpa:jar is missing. @ line 60, column 15
[ERROR] 'dependencies.dependency.version' for mysql:mysql-connector-java:jar is missing. @ line 71, column 15
 @ 
[ERROR] The build could not
 
 read 1 project -> [Help 1]
[ERROR]   
[ERROR]   The project com.taikang:midAutumu:0.0.1-SNAPSHOT (G:\workspace-s\TaiKangWorkspace\midAutumu\pom.xml) has 6 errors
[ERROR]     'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-web:jar is missing. @ line 18, column 21
[ERROR]     'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-tomcat:jar is missing. @ line 30, column 15
[ERROR]     'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-redis:jar is missing. @ line 40, column 15
[ERROR]     'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-jdbc:jar is missing. @ line 55, column 15
[ERROR]     'dependencies.dependency.version' for org.springframework.boot:spring-boot-starter-data-jpa:jar is missing. @ line 60, column 15
[ERROR]     'dependencies.dependency.version' for mysql:mysql-connector-java:jar is missing. @ line 71, column 15
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException

pom檔案如下：

<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.hello</groupId>
  <artifactId>midAutumu</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>pom</packaging>
  <modules>
    <module>midAutumu-base</module>
    <module>midAutumu-controller</module>
    <module>midAutumu-service</module>
    <module>midAutumu-dao</module>
  </modules>
    <properties>
        <tomcat.version>7.0.64</tomcat.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
        <!-- 在這裡將scope屬性設定為provided，這樣在最終形成的WAR中不會包含這個JAR包，
        因為Tomcat或Jetty等伺服器在執行時將會提供相關的API類 -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
            <version>1.0.11</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>3.3.0</version>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.2.3</version>
        </dependency>
        <!-- Spring Boot JDBC -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jdbc</artifactId>
        </dependency>
        <!-- Spring Boot JPA -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <!--通用Mapper外掛 -->
        <dependency>
            <groupId>tk.mybatis</groupId>
            <artifactId>mapper</artifactId>
            <version>3.3.4</version>
        </dependency>
        <!-- mysql連線 -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!-- StringUtils用到 -->
        <!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-lang3</artifactId>
            <version>3.3.2</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>1.2.28</version>
        </dependency>

        <!-- base64編碼 -->
        <!-- https://mvnrepository.com/artifact/commons-codec/commons-codec -->
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
            <version>1.10</version>
        </dependency>
    </dependencies>

    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.5.1</version>
                    <configuration>
                        <source>1.7</source>
                        <target>1.7</target>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>
                <!-- 編譯時不走test方法 -->
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-surefire-plugin</artifactId>
                    <configuration>
                        <skip>true</skip>
                    </configuration>
                </plugin>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-resources-plugin</artifactId>
                    <configuration>
                        <encoding>UTF-8</encoding>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>

        <resources>
            <resource>
                <directory>src/main/resources</directory>
                <filtering>true</filtering>
            </resource>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>true</filtering>
            </resource>
        </resources>
    </build>
</project>

原因：是因為少寫了一個父類的引用：

 <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.4.1.RELEASE</version>
</parent>

加上就好了