Question

我如何解决使用jooq-maven-plugin 3.7.3，Maven 3.3.9，Java 1.8.0_51和OS X 10.10.4获得的NullPointerException？

[错误]无法在项目my-app上执行目标org.jooq：jooq-codegen-maven：3.7.3：generate（default-cli）：运行jOOQ代码生成工具时出错：NullPointerException - ＆gt; [帮助1] org.apache.maven.lifecycle.LifecycleExecutionException：无法执行目标org.jooq：jooq-codegen-maven：3.7.3：在项目my-app上生成（default-cli）：运行jOOQ代码生成工具时出错在org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:212）在org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:153）在org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:145）在org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject（LifecycleModuleBuilder.java:116）在org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject（LifecycleModuleBuilder.java:80）在org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build（SingleThreadedBuilder.java:51）在org.apache.maven.lifecycle.internal.LifecycleStarter.execute（LifecycleStarter.java:128）在org.apache.maven.DefaultMaven.doExecute（DefaultMaven.java:307）在org.apache.maven.DefaultMaven.doExecute（DefaultMaven.java:193）在org.apache.maven.DefaultMaven.execute（DefaultMaven.java:106）在org.apache.maven.cli.MavenCli.execute（MavenCli.java:863）在org.apache.maven.cli.MavenCli.doMain（MavenCli.java:288）在org.apache.maven.cli.MavenCli.main（MavenCli.java:199） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:62） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）在java.lang.reflect.Method.invoke（Method.java:497）在org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced（Launcher.java:289）在org.codehaus.plexus.classworlds.launcher.Launcher.launch（Launcher.java:229）在org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode（Launcher.java:415）在org.codehaus.plexus.classworlds.launcher.Launcher.main（Launcher.java:356）引起：org.apache.maven.plugin.MojoExecutionException：运行jOOQ代码生成工具时出错在org.jooq.util.maven.Plugin.execute（Plugin.java:134）在org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo（DefaultBuildPluginManager.java:134）在org.apache.maven.lifecycle.internal.MojoExecutor.execute（MojoExecutor.java:207） ......还有20个引起：java.lang.NullPointerException 在org.jooq.util.maven.Plugin.execute（Plugin.java:118） ......还有22个

根据代码on Github，抛出NPE的线是

String dir = generator.getTarget().getDirectory();

我在下面配置的目标目录确实存在，我尝试了相对和绝对路径，并且没有使用属性来设置它。

<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>
  <groupId>com.mycompany.app</groupId>
  <artifactId>my-app</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>my-app</name>
  <url>http://maven.apache.org</url>

  <properties>
    <db>myappdb</db>
    <db.driver>com.mysql.jdbc.Driver</db.driver>
    <db.jdbc>jdbc:mysql://localhost</db.jdbc>
    <db.url>${db.jdbc}/${db}</db.url>
    <db.user>root</db.user>
    <db.pass>rootpass</db.pass>

    <jaxb-api.version>2.2.6</jaxb-api.version>
    <jooq.version>3.7.3</jooq.version>
    <jooq.dialect>org.jooq.util.mysql.MySQLDatabase</jooq.dialect>
    <jooq.gen.directory>target</jooq.gen.directory>
    <jooq.gen.package>com.mycompany.app.jooq</jooq.gen.package>
    <junit.version>3.8.1</junit.version>
    <mysql.driver.version>5.1.38</mysql.driver.version>
  </properties>

  <build>

    <pluginManagement>
      <plugins>
        <plugin>
          <groupId>org.jooq</groupId>
          <artifactId>jooq-codegen-maven</artifactId>
          <version>${jooq.version}</version>
          <executions>

            <execution>
              <id>jooq-generate</id>
              <phase>generate-sources</phase>
              <goals>
                <goal>generate</goal>
              </goals>
              <configuration>
                <jdbc>
                  <driver>${db.driver}</driver>
                  <url>${db.url}</url>
                  <user>${db.user}</user>
                  <password>${db.pass}</password>
                </jdbc>
               <generator>
                 <database>
                   <name>${jooq.dialect}</name>
                     <includes>.*</includes>
                     <excludes> UNUSED_TABLE
                        | PREFIX_.*
                        | SECRET_SCHEMA\.SECRET_TABLE # This table (qualified name) should not be generated
                        | SECRET_ROUTINE # This routine (unqualified name) ...
                     </excludes>
                     <inputSchema>${db}</inputSchema>
                     <!--outputSchema /-->
                     <!--dateAsTimestamp>true</dateAsTimestamp -->
                 </database>
                 <generate>
                    <relations>true</relations>
                    <deprecated>true</deprecated>
                    <instanceFields>true</instanceFields>
                    <generatedAnnotation>true</generatedAnnotation>
                    <records>true</records>
                    <pojos>true</pojos>
                    <immutablePojos>true</immutablePojos>
                    <interfaces>true</interfaces>
                    <daos>true</daos>
                    <jpaAnnotations>true</jpaAnnotations>
                    <validationAnnotations>true</validationAnnotations>
                    <springAnnotations>true</springAnnotations>
                    <globalObjectReferences>true</globalObjectReferences>
                    <fluentSetters>false</fluentSetters>
                 </generate>
                 <target>
                    <packageName>${jooq.gen.package}</packageName>
                    <directory>${jooq.gen.directory}</directory>
                 </target>
              </generator>
            </configuration>
          </execution>

        </executions>
        <dependencies>
          <dependency>
            <groupId>org.jooq</groupId>
            <artifactId>jooq</artifactId>
            <version>${jooq.version}</version>
          </dependency>
          <dependency>
            <groupId>org.jooq</groupId>
            <artifactId>jooq-meta</artifactId>
            <version>${jooq.version}</version>
          </dependency>
          <dependency>
            <groupId>org.jooq</groupId>
            <artifactId>jooq-codegen</artifactId>
            <version>${jooq.version}</version>
          </dependency>
          <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>${jaxb-api.version}</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </pluginManagement>
</build>

<dependencies>
  <dependency>
    <groupId>org.jooq</groupId>
    <artifactId>jooq</artifactId>
    <version>${jooq.version}</version>
  </dependency>
  <dependency>
    <groupId>org.jooq</groupId>
    <artifactId>jooq-meta</artifactId>
    <version>${jooq.version}</version>
  </dependency>
  <dependency>
    <groupId>org.jooq</groupId>
    <artifactId>jooq-codegen</artifactId>
    <version>${jooq.version}</version>
  </dependency>
  <dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>${mysql.driver.version}</version>
  </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>${junit.version}</version>
      <scope>test</scope>
    </dependency>
  </dependencies>
</project>

JOOQ Maven插件NullPointerException

0 个答案: