我是JPA 2 maven项目,我想处理源以获得静态元模型。我做了什么,我JBoss' static meta model processor并将其设置为在generate-sources
阶段运行。现在,显然我有一些引用元模型的类,编译本身也很好。但maven-processor-plugin
本身会产生错误,抱怨它无法从元模型中找到符号,如下所示:
[INFO] --- maven-processor-plugin:2.2.4:process (process) @ ng-grid-java ---
[ERROR] diagnostic: c:\...\service\position\PositionSpecifications.java:13: cannot find symbol
symbol : class Position_
这是合乎逻辑的,因为它实际上生成了这些类,但是不正确,因为它会给正确的项目带来错误。或者我可能错了?我错过了什么吗?
更新:我已经能够通过使用配置参数outputDiagnostics
来禁止错误输出,但我不确定这是正确的方法。
答案 0 :(得分:1)
解决方案可以使用build-helper-maven-plugin
将生成的类添加到项目类路径中,如下所示:
<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>
<parent>
<artifactId>artifactId</artifactId>
<groupId>groupId</groupId>
<version>1.0.0-SNAPSHOT</version>
</parent>
<artifactId>jpa-metamodel-generation</artifactId>
<dependencies>
<!-- Hibernate JPA metamodel generator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-jpamodelgen</artifactId>
<version>1.2.0.Final</version>
<scope>provided</scope>
<exclusions>
<exclusion>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<configuration>
<compilerArgument>-proc:none</compilerArgument>
</configuration>
</plugin>
<!-- Plugin to generate JPA metamodel -->
<plugin>
<groupId>org.bsc.maven</groupId>
<artifactId>maven-processor-plugin</artifactId>
<version>2.0.5</version>
<executions>
<execution>
<id>process</id>
<goals>
<goal>process</goal>
</goals>
<phase>process-sources</phase>
<configuration>
<outputDirectory>${project.build.directory}/metamodel</outputDirectory>
<processors>
<processor>org.hibernate.jpamodelgen.JPAMetaModelEntityProcessor</processor>
</processors>
</configuration>
</execution>
</executions>
</plugin>
<!-- Build helper plugin to add generated sources to classpath -->
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>${project.build.directory}/metamodel</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>
答案 1 :(得分:1)
我设置了插件的阶段 -s,如:
build-helper-maven-plugin --> <phase>process-sources</phase>
和
maven-processor-plugin --> <phase>compile</phase>