这个错误也发生在霓虹灯上，因为缺少m2e连接器。 解决方案: 悬停错误并选择-发现新的m2e连接器。

它将安装新的连接器，仅此而已。

哪里可以找到WTP:

鼠标在pom.xml中的<插件>上，然后“发现新的m2e连接器”。

我安装了他们所有的默认检查和它的工作。

在Eclipse Luna 4.4.0中，您可以在首选项中选择忽略此错误

窗口>首选项> Maven >错误/警告>插件执行没有被生命周期配置覆盖。选择忽略/警告/错误。

此外，在此错误的快速修复(Ctrl + 1)中，它提供了一个选项 在Eclipse首选项中将目标标记为忽略(实验性)

这是一种更干净的方式，因为它不会修改pom.xml。

您将需要执行Maven > Update项目来修复任何其他项目中的相同错误。

在STS(Spring-tool-suite)中，您可以在首选项中选择忽略此错误

窗口>首选项> Maven >错误/警告>生命周期配置未覆盖插件执行。选择忽略/警告/错误。 然后。右键单击项目，单击Maven并更新项目，然后错误就会消失。

见https://www.eclipse.org/m2e/documentation/m2e-execution-not-covered.html。

To solve some long-standing issues, m2e 1.0 requires explicit instructions what to do with all Maven plugins bound to "interesting" phases of project build lifecycle. We call these instructions "project build lifecycle mapping" or simply "lifecycle mapping" because they define how m2e maps information from project pom.xml file to Eclipse workspace project configuration and behaviour during Eclipse workspace build. Project build lifecycle mapping configuration can be specified in project pom.xml, contributed by Eclipse plugins and there is also default configuration for some commonly used Maven plugins shipped with m2e. We call these "lifecycle mapping metadata sources". m2e will create error marker like below for all plugin executions that do not have lifecycle mapping in any of the mapping metadata sources. Plugin execution not covered by lifecycle configuration: org.apache.maven.plugins:maven-antrun-plugin:1.3:run (execution: generate-sources-input, phase: generate-sources) m2e matches plugin executions to actions using combination of plugin groupId, artifactId, version range and goal. There are three basic actions that m2e can be instructed to do with a plugin execution -- ignore, execute and delegate to a project configurator.

转到workspace/rtc-ws/.metadata/.plugins/org.eclipse.m2e.core/lifecycle-mapping-metadata.xml，然后创建lifecycle-mapping-metadata.xml文件，并按如下方式粘贴并重新加载配置

如果你正在使用Eclipse 4.2，在映射方面有问题，并且不想把乱七八糟的东西放到pom.xml中，创建一个新的文件Lifecycle -mapping-metadata.xml，在Windows中配置它-> Preferences -> Lifecycle mapping(不要忘记在每次更改这个文件后按Reload workspace Lifecycle mappings metadata !)下面是基于eclipse/plugins/org.eclipse.m2e.lifecyclemapping. defaults_3 .2.0.20120903-1050.jar/ lifeccycle -mapping-metadata.xml的示例

<?xml version="1.0" encoding="UTF-8"?>
<lifecycleMappingMetadata>
    <pluginExecutions>
        <pluginExecution>
            <pluginExecutionFilter>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>buildnumber-maven-plugin</artifactId>
                <goals>
                    <goal>create-timestamp</goal>
                </goals>
                <versionRange>[0.0,)</versionRange>
            </pluginExecutionFilter>
            <action>
                <ignore />
            </action>
        </pluginExecution>

        <pluginExecution>
            <pluginExecutionFilter>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <goals>
                    <goal>list</goal>
                </goals>
                <versionRange>[0.0,)</versionRange>
            </pluginExecutionFilter>
            <action>
                <ignore />
            </action>
        </pluginExecution>

        <pluginExecution>
            <pluginExecutionFilter>
                <groupId>org.zeroturnaround</groupId>
                <artifactId>jrebel-maven-plugin</artifactId>
                <goals>
                    <goal>generate</goal>
                </goals>
                <versionRange>[0.0,)</versionRange>
            </pluginExecutionFilter>
            <action>
                <ignore />
            </action>
        </pluginExecution>

        <pluginExecution>
            <pluginExecutionFilter>
                <groupId>org.codehaus.mojo</groupId>
                <artifactId>gwt-maven-plugin</artifactId>
                <goals>
                    <goal>compile</goal>
                </goals>
                <versionRange>[0.0,)</versionRange>
            </pluginExecutionFilter>
            <action>
                <ignore />
            </action>
        </pluginExecution>

        <pluginExecution>
            <pluginExecutionFilter>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-dependency-plugin</artifactId>
                <goals>
                    <goal>copy-dependencies</goal>
                    <goal>unpack</goal>
                </goals>
                <versionRange>[0.0,)</versionRange>
            </pluginExecutionFilter>
            <action>
                <ignore />
            </action>
        </pluginExecution>

        <pluginExecution>
            <pluginExecutionFilter>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-antrun-plugin</artifactId>
                <versionRange>[1.7,)</versionRange>
                <goals>
                    <goal>run</goal>
                </goals>
            </pluginExecutionFilter>
            <action>
                <ignore />
            </action>
        </pluginExecution>


        <pluginExecution>
            <pluginExecutionFilter>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-checkstyle-plugin</artifactId>
                <versionRange>[2.8,)</versionRange>
                <goals>
                    <goal>check</goal>
                </goals>
            </pluginExecutionFilter>
            <action>
                <ignore />
            </action>
        </pluginExecution>

    </pluginExecutions>
</lifecycleMappingMetadata>

这个错误也发生在霓虹灯上，因为缺少m2e连接器。 解决方案: 悬停错误并选择-发现新的m2e连接器。

它将安装新的连接器，仅此而已。