Maven運行項目與依賴關係

我發現問題在哪裏run main class但沒有找到問題在哪裏詢問如何運行主類當項目有幾個依賴關係。Maven運行項目與依賴關係

我有如下的pom.xml爲我的項目：

<?xml version="1.0" encoding="UTF-8"?> 
<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/xsd/maven-4.0.0.xsd"> 
    <modelVersion>4.0.0</modelVersion> 

    <groupId>org.onbrains</groupId> 
    <artifactId>ExportQueryResult</artifactId> 
    <version>1.0-SNAPSHOT</version> 

    <dependencies> 

     <dependency> 
      <groupId>com.oracle</groupId> 
      <artifactId>ojdbc6</artifactId> 
      <version>11.2.0.1.0</version> 
      <scope>system</scope> 
      <systemPath>${basedir}/lib/ojdbc6.jar</systemPath> 
     </dependency> 

     <dependency> 
      <groupId>org.apache.poi</groupId> 
      <artifactId>poi</artifactId> 
      <version>3.9</version> 
     </dependency> 

     <dependency> 
      <groupId>javax.enterprise</groupId> 
      <artifactId>cdi-api</artifactId> 
      <version>1.2</version> 
     </dependency> 

    </dependencies> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.codehaus.mojo</groupId> 
       <artifactId>exec-maven-plugin</artifactId> 
       <configuration> 
        <mainClass>Runner</mainClass> 
       </configuration> 
      </plugin> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>3.3</version> 
       <configuration> 
        <source>1.7</source> 
        <target>1.7</target> 
       </configuration> 
      </plugin> 
     </plugins> 
    </build> 

</project>

但是當我嘗試從Maven的運行主類：

mvn exec:java

我得到如下異常：

[INFO] Scanning for projects... 
[WARNING] 
[WARNING] Some problems were encountered while building the effective model for org.onbrains:ExportQueryResult:jar:1.0-SNAPSHOT 
[WARNING] 'dependencies.dependency.systemPath' for com.oracle:ojdbc6:jar should not point at files within the project directory, ${basedir}/lib/ojdbc6.jar will be unresolvable by dependent projects @ line 18, column 25 
[WARNING] 'build.plugins.plugin.version' for org.codehaus.mojo:exec-maven-plugin is missing. @ line 42, column 21 
[WARNING] 
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build. 
[WARNING] 
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects. 
[WARNING] 
[INFO]                   
[INFO] ------------------------------------------------------------------------ 
[INFO] Building ExportQueryResult 1.0-SNAPSHOT 
[INFO] ------------------------------------------------------------------------ 
[INFO] 
[INFO] --- exec-maven-plugin:1.4.0:java (default-cli) @ ExportQueryResult --- 
oracle.jdbc.OracleDriver 
[WARNING] 
java.lang.reflect.InvocationTargetException 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) 
    at java.lang.reflect.Method.invoke(Method.java:606) 
    at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:293) 
    at java.lang.Thread.run(Thread.java:745) 
Caused by: java.lang.NullPointerException 
    at query.QueryUtils.executeQuery(QueryUtils.java:41) 
    at Runner.main(Runner.java:41) 
    ... 6 more 
[INFO] ------------------------------------------------------------------------ 
[INFO] BUILD FAILURE 
[INFO] ------------------------------------------------------------------------ 
[INFO] Total time: 1.008 s 
[INFO] Finished at: 2015-12-03T15:15:08+03:00 
[INFO] Final Memory: 10M/304M 
[INFO] ------------------------------------------------------------------------ 
[ERROR] Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.4.0:java (default-cli) on project ExportQueryResult: An exception occured while executing the Java class. null: InvocationTargetException: NullPointerException -> [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: 
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

來源

2015-12-03 HAYMbl4

這可能幫助，http://stackoverflow.com/questions/4123044/maven-3-warnings-about-build-plugins-plugin-version –

我認爲你的本地maven倉庫中缺少oracle jdbc jar。直接從mvn倉庫下載jar，因爲它會將oracle jar添加到本地maven倉庫。

下面是Oracle JDBC的依賴片斷

<dependency> 
    <groupId>ojdbc</groupId> 
    <artifactId>ojdbc</artifactId> 
    <version>14</version> 
</dependency>

根據需要更改由你的版本。

如果您已經有一個現有的jar添加到本地maven倉庫。

無論如何，你必須從你的依賴刪除<systemPath>標記。

來源

2015-12-03 13:50:29 harshavmb

嘗試添加類路徑：

<arguments> 
      <argument>-Dmyproperty=myvalue</argument> 
      <argument>-classpath</argument> 
      <classpath/> 
      <argument>Runner</argument> 
      ... 
</arguments>

來源

2015-12-03 13:54:43

Maven運行項目與依賴關係

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