IDEA报错合辑

本是古典何须时尚 2023-01-22 02:52 25阅读 0赞

## 一：maven构建时报错：was cached in the local repository… ##

### 原因： ###

Maven默认会使用本地缓存的库来编译工程，对于上次下载失败的库，maven会在~/.m2/repository目录下创建xxx.lastUpdated文件，一旦这个文件存在，那么在直到下一次nexus更新之前都不会更新这个依赖库。

### 解决办法： ###

方法一：  
删除v~/.m2/repository目录下的\*.lastUpdated文件，然后再次运行mvn compile编译工程。  
方法二：  
修改~/.m2/settings.xml 或/opt/maven/conf/settings.xml文件，将其中的仓库添加 always来强制每次都更新依赖库。

## 二：\[ERROR\] Failed to execute goal org.apache.maven.plugins:maven-surefire-plugin:2.10:test (default-test) on project web\_nanchang: There are test failures. ##

### 解决方法： ###

这是因为测试代码时遇到错误，它会停止编译。只需要在pom.xml的里添加以下配置，使得测试出错不影响项目的编译。

<build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-surefire-plugin</artifactId>
                <configuration>
                    <testFailureIgnore>true</testFailureIgnore>
                </configuration>
            </plugin>
        </plugins>
    </build>

## 异常3： ##

[ERROR] Failed to execute goal org.codehaus.cargo:cargo-maven2-plugin:1.0.6:start (start-container) on project myproject: Execution start-container of goal org.codehaus.cargo:cargo-maven2-plugin:1.0.6:start failed: Error while expanding C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\cargo\installs\apache-tomcat-6.0.29.zip
    [ERROR] java.io.IOException: Negative seek offset
    [ERROR] -> [Help 1]
    [ERROR]
    [ERROR] To see the full stack trace of the errors, re-run Maven with the -e swit
    ch.
    [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 rea
    d the following articles:
    [ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginExecutio
    nException

### 解决方法： ###

自己下载“apache-tomcat-6.0.29.zip”，将下载好的文件拷贝到指定文件夹“C:\\Documents and Settings\\Administrator\\Local Settings\\Temp\\cargo\\installs”下。

## 异常4： ##

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.1.1:war (default-war) on project web_nanchang: Error assembling WAR: webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]
    
    [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:

### 解决方法： ###

maven的web项目默认的webroot是在src\\main\\webapp。如果在此目录下找不到web.xml就抛出以上的异常。解决方法在pom.xml加入以下的配置。红色字体改成你网站的根目录。

<build>
        <finalName>simple-webapp</finalName>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>2.1.1</version>
                <configuration>
                    <webResources>
                        <resource>
                            
                            <directory>WebContent</directory>
                        </resource>
                    </webResources>
                </configuration>
            </plugin>
        </plugins>
    </build>