maven 常见异常记录

异常1：

[ERROR] Failed to execute goal on project biz_zhuhai: Could not resolve dependencies for project biz_zhuhai:biz_zhuhai:jar:0.0.1-SNAPSHOT: Failed to collect dependencies for [com.maywide.ibh:lib345:pom:1.0 (compile)]: Failed to read artifact descriptor for com.maywide.ibh:lib345:pom:1.0: Could not transfer artifact com.maywide.ibh:lib345:pom:1.0 from/to releases (http://localhost:9888/nexus-2.0.3/content/repositories/releases): Connection to http://localhost:9888 refused: Connection refused: connect -> [Help 1]

解决方法：

这是配置的url有错误或者是私服没有配好，导致构件下载时出错。如果没有jar包需要在私服里下载，可以不配置私服的，也就是可以把setting.xml的profiles里的东西全部删除的。

 

异常2：

[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.

[ERROR]

[ERROR] Please refer to E:\maven\web_nanchang\target\surefire-reports for the individual test results.

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<project>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>
                        <!-- this is relative to the pom.xml directory -->
                        <directory>WebContent</directory>
                    </resource>
                </webResources>
            </configuration>
        </plugin>
    </plugins>
</build>
异常5： 编码GBK的不可映射字符
   异常：windows环境下，maven 编译时出现“编码GBK的不可映射字符”，这是因为maven编译时使用的GBK编码方式，但是代码使用的是utf-8编码。
   解决方法：在maven 添加插件，如下所示：

    <plugin>  
        <artifactId>maven-compiler-plugin</artifactId>  
        <configuration>  
            <source>1.7</source>  
            <target>1.7</target>  
            <!-- 指明编译源代码时使用的字符编码，  
            maven编译的时候默认使用的GBK编码，   
              通过encoding属性设置字符编码，  
              告诉maven这个项目使用UTF-8来编译 -->  
            <encoding>utf-8</encoding>   
        </configuration>  
    </plugin>