带有datanucleus和JDO的GAE - 无法在本地测试 - 获取javax.jdo.JDOUserException：持久化类在数据库中没有表

Question

我正在重构几年前开发的GAE应用程序（并且工作正常）以使用Maven和Java 8。 该应用程序使用JDO＆amp; DataNucleus将。 该应用程序正在构建时没有错误，我可以浏览到主页，但在尝试访问数据库时遇到以下错误（在第一阶段进行用户密码验证...）：

  

javax.jdo.JDOUserException：持久类＆＃34;类com.yang.model.User 似乎没有得到增强。您可能需要重新运行增强器并检查输出中的错误。＆＃34; 在数据库中没有表，但操作需要它。请检查此类的MetaData规范。

我想我已经阅读了任何可能相关的论坛问题，包括this one但没有成功解决此问题。

我是否应该应用特殊配置来初始化数据库\在本地引用它或者我的代码或环境是错误的？ （我没有尝试部署它，因为我有真正的用户使用该应用程序，我不想让它冒险......）。

我在配置文件和版本中做了很多更改，但没有触及访问数据库的java类。

这是我的pom.xml：

<?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>
  <packaging>war</packaging>
  <version>1.0-SNAPSHOT</version>

  <groupId>com.yang.astrology</groupId>
  <artifactId>yang-wisdom</artifactId>

  <properties>
    <appengine.maven.plugin.version>1.9.63</appengine.maven.plugin.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <maven.compiler.showDeprecation>true</maven.compiler.showDeprecation>
    <spring.version>5.0.5.RELEASE</spring.version>
    <appengine.version>1.9.59</appengine.version>
    <datanucleus.version>3.1.0-release</datanucleus.version>
  </properties>

  <prerequisites>
    <maven>3.5.3</maven>
  </prerequisites>

  <dependencies>
    <!-- Compile/runtime dependencies -->
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>javax.servlet-api</artifactId>
      <version>3.1.0</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>javax.servlet.jsp</groupId>
      <artifactId>javax.servlet.jsp-api</artifactId>
      <version>2.3.1</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>com.google.appengine</groupId>
      <artifactId>appengine-api-1.0-sdk</artifactId>
      <version>${appengine.version}</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
        <groupId>com.google.appengine</groupId>
        <artifactId>appengine-endpoints</artifactId>
        <version>${appengine.version}</version>
    </dependency>

    <dependency>
       <groupId>com.google.appengine.orm</groupId>
       <artifactId>datanucleus-appengine</artifactId>
       <version>2.1.2</version>
    </dependency>
    <dependency>
        <groupId>org.datanucleus</groupId>
        <artifactId>datanucleus-core</artifactId>
        <version>${datanucleus.version}</version>
    </dependency>
    <dependency>
        <groupId>org.datanucleus</groupId>
        <artifactId>datanucleus-api-jdo</artifactId>
        <version>${datanucleus.version}</version>
    </dependency>
    <dependency>
        <groupId>com.google.appengine</groupId>
        <artifactId>appengine-endpoints-deps</artifactId>
        <version>1.9.21</version>
    </dependency>   

    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.16.18</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.springframework/spring-web -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
        <version>${spring.version}</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring.version}</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/com.google.code.gson/gson -->
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.8.2</version>
    </dependency>


    <!-- Test Dependencies -->
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>test</scope>
    </dependency>


    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.4</version>
    </dependency>
    <dependency>
        <groupId>dom4j</groupId>
        <artifactId>dom4j</artifactId>
        <version>1.6.1</version>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring.version}</version>
        <scope>test</scope>
    </dependency>
     <dependency>
        <groupId>javax.inject</groupId>
        <artifactId>javax.inject</artifactId>
        <version>1</version>
    </dependency>
    <dependency>
        <groupId>javax.persistence</groupId>
        <artifactId>persistence-api</artifactId>
        <version>1.0</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/javax.jdo/ -->
    <dependency>
        <groupId>javax.jdo</groupId>
        <artifactId>jdo-api</artifactId>
        <version>3.1</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/com.google.gwt/gwt-servlet -->
    <dependency>
        <groupId>com.google.gwt</groupId>
        <artifactId>gwt-servlet</artifactId>
        <version>2.8.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.httpcomponents/httpclient -->
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.5.4</version>
    </dependency>

    <dependency>
        <groupId>com.torunski.crawler</groupId>
        <artifactId>crawler</artifactId>
        <version>0.6.0</version>
    </dependency>

    <!-- https://mvnrepository.com/artifact/org.jsoup/jsoup -->
    <dependency>
        <groupId>org.jsoup</groupId>
        <artifactId>jsoup</artifactId>
        <version>1.11.2</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/net.sf.jtidy/jtidy -->
    <dependency>
        <groupId>net.sf.jtidy</groupId>
        <artifactId>jtidy</artifactId>
        <version>r938</version>
    </dependency>

  </dependencies>


  <build>
    <!-- for hot reload of the web application-->
    <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
    <pluginManagement>
        <plugins>
              <plugin>
                <groupId>org.datanucleus</groupId>
                <artifactId>maven-datanucleus-plugin</artifactId>
                <version>3.2.0-m1</version>
                <configuration>
                    <api>JDO</api>
                    <props>${basedir}/datanucleus.properties</props>
                    <verbose>true</verbose>
                    <enhancerName>ASM</enhancerName>
                </configuration>
                <executions>
                    <execution>
                        <phase>process-classes</phase>
                        <goals>
                            <goal>enhance</goal>
                        </goals>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>org.datanucleus</groupId>
                        <artifactId>datanucleus-core</artifactId>
                        <version>3.1.3</version>
                    </dependency>
                </dependencies>
            </plugin>
            <!-- plugin>
                <groupId>org.datanucleus</groupId>
                <artifactId>maven-datanucleus-plugin</artifactId>
                <version>3.1.0-release</version>
                <configuration>
                    <api>JDO</api>
                    <props>${basedir}/datanucleus.properties</props>        
                </configuration>
                <executions>
                    <execution>
                        <phase>process-classes</phase>
                        <goals>
                            <goal>enhance</goal>
                        </goals>
                    </execution>
                </executions>
                <dependencies>
                    <dependency>
                        <groupId>org.datanucleus</groupId>
                        <artifactId>datanucleus-core</artifactId>
                        <version>${datanucleus.version}</version>
                    </dependency>
                </dependencies>
            </plugin-->
          <plugin>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>versions-maven-plugin</artifactId>
            <version>2.5</version>
            <executions>
              <execution>
                <phase>compile</phase>
                <goals>
                  <goal>display-dependency-updates</goal>
                  <goal>display-plugin-updates</goal>
                </goals>
              </execution>
            </executions>
          </plugin>
          <plugin>
            <groupId>com.google.cloud.tools</groupId>
            <artifactId>appengine-maven-plugin</artifactId>
            <version>${appengine.maven.plugin.version}</version>
          </plugin>
          <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-war-plugin</artifactId>
            <version>2.1.1</version>
        </plugin>
        </plugins>
    </pluginManagement>

  </build>
</project>

这是jdoconfig.xml文件（位于src \ main \ webapp \ WEB-INF \ classes \ META-INF中）：

<?xml version="1.0" encoding="utf-8"?>
<jdoconfig xmlns="http://java.sun.com/xml/ns/jdo/jdoconfig"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:noNamespaceSchemaLocation="http://java.sun.com/xml/ns/jdo/jdoconfig">

    <persistence-manager-factory name="transactions-optional">
        <property name="javax.jdo.PersistenceManagerFactoryClass"
            value="org.datanucleus.api.jdo.JDOPersistenceManagerFactory"/>
        <property name="javax.jdo.option.ConnectionURL" value="appengine"/>
        <property name="javax.jdo.option.NontransactionalRead" value="true"/>
        <property name="javax.jdo.option.NontransactionalWrite" value="true"/>
        <property name="javax.jdo.option.RetainValues" value="true"/>
        <property name="datanucleus.appengine.autoCreateDatastoreTxns" value="true"/>
        <property name="datanucleus.appengine.singletonPMFForName" value="true"/>
    </persistence-manager-factory>
</jdoconfig>

我的Eclipse项目的.project文件确实包含com.google.appengine.eclipse.core.enhancerbuilder（在论坛中阅读后指定它）：

<buildCommand>
        <name>com.google.appengine.eclipse.core.enhancerbuilder</name>
        <arguments>
        </arguments>
</buildCommand>

我已经下载了最新的谷歌应用引擎sdk（1.9.63）。

这是我访问数据库的方式：

public final class PMF {
    private static final PersistenceManagerFactory pmfInstance = JDOHelper.getPersistenceManagerFactory("transactions-optional");

    private PMF() {
    }

    public static PersistenceManagerFactory get() {
        return pmfInstance;
    }
}

在DAO中：

protected PersistenceManager getManager() {
    if (persistenceManager == null || persistenceManager.isClosed()) {
        persistenceManager = PMF.get().getPersistenceManager();
    }

    return persistenceManager;
}

public User findByUsername(String username) {
    Query q = getManager().newQuery(User.class);
    q.setFilter("username == usernameParam");
    q.declareParameters("String usernameParam");

    List<User> results = (List<User>) q.execute(username);
    if (results.isEmpty()) {
        return null;
    }

    return results.get(0);
}

我将非常感谢您的帮助。