在项目方面更改版本时，Eclipse Mars 中具有 M2E 不稳定配置的动态 Web 模块

Question

我有一个动态 web 模块项目配置为一个带有 M2E 的 Maven 项目。我只使用 Eclipse 的嵌入式 maven 对项目做任何事情，所以没有命令行清理等。

我正在使用 Tomcat 7，我遇到的第一个问题是当我运行 maven->update project... 时，M2E 会将动态 Web 模块方面更新为 3.1 所以然后我不能再部署到 Tomcat。

我无法将分面降级到 3.0。 Eclipse 只是说 "Can't do that" 之类的东西。但是我可以取消选择小平面，然后 apply，然后将其设置为 3.0。

那时，我可以将应用程序部署到 tomcat。

但是，一旦我再次运行 maven->update project... 项目（例如 Foo），项目方面就会升级到 3.1 并创建一个名为 FooEAR 的新项目，在 EAR 部署程序集中具有 war 模块。

我的配置有什么严重错误？（我没有检查项目方面 EAR）

[更新] 仍然在非 war 项目上获取奇怪的 myprojectEAR 项目。

日食火星 4.5.1

M2E 1.6.2

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>
  <parent>
    <groupId>com.foo</groupId>
    <artifactId>foo-parent</artifactId>
    <version>1.0.1-SNAPSHOT</version>
  </parent>
  <artifactId>foo</artifactId>
  <version>0.0.6-SNAPSHOT</version>
  <packaging>war</packaging>
  <properties>
    <targetRepositoryId>init later</targetRepositoryId>
    <targetRepositoryUrl>init later</targetRepositoryUrl>
  </properties>
  <build>
    <resources>
      <resource>
        <directory>${basedir}/src/main/resources</directory>
        <filtering>false</filtering>
      </resource>
      <resource>
        <directory>${basedir}/src/main/resources</directory>
        <targetPath>${basedir}/src/main/javadoc</targetPath>
        <filtering>true</filtering>
        <includes>
          <include>**/overview.html</include>
        </includes>
      </resource>
      <resource>
        <directory>${basedir}/thunder</directory>
        <targetPath>${project.build.directory}/thunder</targetPath>
        <filtering>true</filtering>
        <includes>
          <include>*</include>
        </includes>
      </resource>
    </resources>
    <plugins>
      <plugin>
        <artifactId>maven-jar-plugin</artifactId>
        <configuration>
          <archive>
            <manifest>
              <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
              <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
              <addClasspath>true</addClasspath>
              <classpathPrefix>dependency-jars/</classpathPrefix>
            </manifest>
          </archive>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-war-plugin</artifactId>
        <configuration>
          <warSourceDirectory>src/main/webapp</warSourceDirectory>
          <failOnMissingWebXml>false</failOnMissingWebXml>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-assembly-plugin</artifactId>
        <configuration>
          <descriptor>src/assembly/zip-file.xml</descriptor>
        </configuration>
        <executions>
          <execution>
            <phase>package</phase>
            <goals>
              <goal>single</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <artifactId>maven-deploy-plugin</artifactId>
        <executions>
          <execution>
            <id>ZipOntoNexus</id>
            <phase>deploy</phase>
            <goals>
              <goal>deploy-file</goal>
            </goals>
            <configuration>
              <file>${project.build.directory}/${project.build.finalName}.zip</file>
              <groupId>${project.groupId}</groupId>
              <artifactId>${project.artifactId}-zip</artifactId>
              <version>${project.version}</version>
              <repositoryId>${targetRepositoryId}</repositoryId>
              <url>${targetRepositoryUrl}</url>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <artifactId>maven-failsafe-plugin</artifactId>
        <version>2.18.1</version>
        <configuration>
          <groups>com.foo.IntegrationTest</groups>
        </configuration>
        <executions>
          <execution>
            <goals>
              <goal>integration-test</goal>
            </goals>
            <configuration>
              <includes>
                <include>**/*.class</include>
              </includes>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <artifactId>maven-checkstyle-plugin</artifactId>
        <version>2.17</version>
        <configuration>
          <configLocation>${basedir}/checkstyle/checkstyle.xml</configLocation>
          <propertiesLocation>${basedir}/checkstyle/checkstyle-maven.properties</propertiesLocation>
        </configuration>
      </plugin>
      <plugin>
        <artifactId>maven-antrun-plugin</artifactId>
        <executions>
          <execution>
            <goals>
              <goal>run</goal>
            </goals>
            <phase>prepare-package</phase>
            <configuration>
              <tasks>
                <delete failonerror="false">
                  <fileset
                    dir="${project.build.directory}/${project.build.finalName}"
                    includes="version*.txt" />
                </delete>
                <mkdir
                  dir="${project.build.directory}/${project.build.finalName}" />
                <touch
                  file="${project.build.directory}/${project.build.finalName}/version-${project.version}.txt" />
              </tasks>
            </configuration>
          </execution>
          <execution>
            <id>debug deploy</id>
            <goals>
              <goal>run</goal>
            </goals>
            <phase>verify</phase>
            <configuration>
              <tasks if="project.version  SNAPSHOT">
                <property name="targetRepositoryUrl" 
                    value="${project.distributionManagement.snapshotRepository.url}" />
                <echo message="url=${targetRepositoryUrl}" />
              </tasks>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.codehaus.mojo</groupId>
        <artifactId>build-helper-maven-plugin</artifactId>
        <version>1.7</version>
        <!-- add-test-source goal executed at generate-test-sources phase. -->
        <!-- http://www.petrikainulainen.net/programming/maven/integration-testing-with-maven/ -->
        <executions>
          <execution>
            <id>add-integration-test-sources</id>
            <phase>generate-test-sources</phase>
            <goals>
              <goal>add-test-source</goal>
            </goals>
            <configuration>
              <sources>
                <source>src/integration-test/java</source>
              </sources>
            </configuration>
          </execution>
        </executions>
      </plugin>
      <plugin>
        <groupId>org.pitest</groupId>
        <artifactId>pitest-maven</artifactId>
        <version>1.1.5</version>
        <configuration>
          <targetClasses>
            <param>com.foo.*</param>
          </targetClasses>
          <targetTests>
            <param>com.foo.*</param>
          </targetTests>
          <excludedGroups>
            <excludedGroup>com.foo.PitSkip</excludedGroup>
          </excludedGroups>
        </configuration>
      </plugin>
      <plugin>
        <groupId>com.fortify.ps.maven.plugin</groupId>
        <artifactId>maven-sca-plugin</artifactId>
        <version>3.50</version>
      </plugin>
    </plugins>
    <pluginManagement>
      <plugins>
        <!--This plugin's configuration is used to store Eclipse m2e settings 
          only. It has no influence on the Maven build itself. -->
        <plugin>
          <groupId>org.eclipse.m2e</groupId>
          <artifactId>lifecycle-mapping</artifactId>
          <version>1.0.0</version>
          <configuration>
            <lifecycleMappingMetadata>
              <pluginExecutions>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.codehaus.mojo</groupId>
                    <artifactId>build-helper-maven-plugin</artifactId>
                    <versionRange>[1.7,)</versionRange>
                    <goals>
                      <goal>add-test-source</goal>
                    </goals>
                  </pluginExecutionFilter>
                  <action>
                    <ignore></ignore>
                  </action>
                </pluginExecution>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.jacoco</groupId>
                    <artifactId>jacoco-maven-plugin</artifactId>
                    <versionRange>[0.5,)
                    </versionRange>
                    <goals>
                      <goal>prepare-agent</goal>
                    </goals>
                  </pluginExecutionFilter>
                  <action>
                    <!-- see http://wiki.eclipse.org/M2E_plugin_execution_not_covered -->
                    <ignore></ignore>
                  </action>
                </pluginExecution>
                <pluginExecution>
                  <pluginExecutionFilter>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-antrun-plugin</artifactId>
                    <versionRange>[1.3,)</versionRange>
                    <goals>
                      <goal>run</goal>
                    </goals>
                  </pluginExecutionFilter>
                  <action>
                    <execute>
                      <runOnIncremental>true</runOnIncremental>
                    </execute>
                  </action>
                </pluginExecution>
              </pluginExecutions>
            </lifecycleMappingMetadata>
          </configuration>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

Answer 1

禁用 "Dynamic web project" 方面。
在 web.xml 中将 servlet 版本设置为 3.0：
```
<web-app version="3.0" ...
```

在 pom.xml 中将 servlet 版本设置为 3.0.x（不要忘记 "provided" 范围）：

<dependency>
  <groupId>javax.servlet</groupId>
  <artifactId>javax.servlet-api</artifactId>
  <version>3.0.1</version>
  <scope>provided</scope>
</dependency>

重新启用 "Dynamic web project" 方面 3.0。
按 Alt+F5。

在项目方面更改版本时，Eclipse Mars 中具有 M2E 不稳定配置的动态 Web 模块

Dynamic web module in Eclipse Mars with M2E unstable config when changing versions in project facets

xml

eclipse

maven

tomcat

m2e