java – 无法在Eclipse IDE中更改Maven版本

在 Eclipse内部没有mvn包但在终端中成功之后,我意识到Eclipse运行Maven 3.3.3而终端运行3.3.9.我试图通过所有明显的帐户成功,通过访问Eclipse来重新配置eclipse – >偏好 – > Maven – >安装并指向我的3.3.9文件夹.我重新启动Eclipse并再次尝试但没有可用.此外,尝试构建时不会确认对pom.xml文件的更改.我插入了不适当的斜杠和其他字符,我只能生成此错误：

装配WAR时出错：需要web.xml属性(如果在更新模式下执行,则为预先存在的WEB-INF / web.xml)

我根据this推荐修改了我的pom文件,但正如我所说,maven没有认识到对pom的更改,我无法运行mvn –version来生成3.3.9.我在下面附上了我的pom.xml

<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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.javawebtutor</groupId>
<artifactId>LoginWebApp</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>LoginWebApp Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>2.5</version>
    </dependency>
    <dependency>
        <groupId>mysql</groupId>
        <artifactId>mysql-connector-java</artifactId>
        <version>5.1.30</version>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>4.10</version>
    </dependency>
</dependencies>
<build>
    <finalName>LoginWebApp</finalName>
    <plugins>
    <plugin>            
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-war-plugin</artifactId>
      <configuration>
        <webXml>srcmainwebappWEB-INFweb.xml</webXml>        
      </configuration>
    </plugin>
    </plugins>
</build>

Apache Maven 3.3.9 (bb52d8502b132ec0a5a3f4c09453c07478323dc5; 2015-11 10T11:41:47-05:00)
Maven home: C:Program FilesJavaapache-maven-3.3.9
Java version: 1.7.0_80,vendor: Oracle Corporation
Java home: C:Program FilesJavajdk1.7.0_80jre
Default locale: en_US,platform encoding: UTF-8
OS name: "windows 8.1",version: "6.3",arch: "amd64",family: "windows"