Springboot pom.xml reported an error

problem description

the environmental background of the problems and what methods you have tried

related codes

/ / Please paste the code text below (do not replace the code with pictures)

 <?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.neo</groupId>
<artifactId>spring-boot-web</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>

<name>spring-boot-web</name>
<description>Demo project for Spring Boot</description>

<parent>       //
<groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-redis</artifactId>
    <version>1.5.6.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>

<properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <java.version>1.8</java.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
     <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
    </dependency>
     <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-devtools</artifactId>
        <optional>true</optional>
    </dependency>
    <dependency>  
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-thymeleaf</artifactId>
    </dependency> 
    <dependency>
        <groupId>org.webjars.bower</groupId>
        <artifactId>jquery</artifactId>
        <version>2.0.3</version>
    </dependency> 
    <dependency>
        <groupId>org.webjars.bower</groupId>
        <artifactId>bootstrap</artifactId>
        <version>3.0.3</version>
     </dependency>
      <dependency>    //
        <groupId>org.springframework.boot</groupId>  
        <artifactId>spring-boot-starter-redis</artifactId>  
    </dependency>  
    <dependency>
        <groupId>org.springframework.session</groupId>
        <artifactId>spring-session-data-redis</artifactId>
    </dependency>
</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
            <configuration>
                <fork>true</fork>
            </configuration>
        </plugin>
    </plugins>
</build>


</project>

what result do you expect? What is the error message actually seen?

< parent > there is an error message in that line. Here is an error message.
Multiple annotations found at this line:- For artifact {org.springframework.boot:spring-boot-starter-redis:null:jar}: The version cannot be empty is followed by a long list of what

< denpendcy > also reported an error Project build error: "dependencies.dependency.version" for org.springframework.boot:spring-boot-starter-redis:jar is missing.

I marked out two places where

reported an error, and this is an example on github that is directly derived. I don"t know why it was imported and reported an error

.
Jul.26,2021

generally speaking, the parent of spring-boot should be this

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.0.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

add the version number under the spring-boot-starter-redis configuration

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1c2ded2-32f08.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1c2ded2-32f08.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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