java - 针对 Java EE 6 API 进行测试

Question

我为 JAX-RS 编写了一个补充，并将 Java EE 6 API 作为 Maven 依赖项包含在内。

<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-api</artifactId>
    <version>6.0</version>
    <scope>provided</scope>
</dependency>

然后我有一个小测试用例:

  @Test
  public void testIsWriteable() {
    class SpecialViewable extends Viewable {
      public SpecialViewable() {
        super("test");
      }
    }
    FreeMarkerViewProcessor processor = new FreeMarkerViewProcessor(null);
    assertTrue(processor.isWriteable(SpecialViewable.class, null, null,
            MediaType.WILDCARD_TYPE));
  }

但我得到一个错误:

java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/ws/rs/core/MediaType
    ...

如果我将 Jersey 作为 JAX-RS 实现而不是 Java EE API，一切都很好。

感谢 BalusC 的提示，我知道我猜到了什么:Java EE 6 只是一个没有方法体的 API: From the java.net blog

You can compile you code with this jar, but of course you cannnot run your application with it since it contains only the Java EE 5 APIs and does not contain any method bodies. If you try to run, you would get this exception:

Exception in thread "main" java.lang.ClassFormatError: Absent Code attribute in method that is not native or abstract in class file javax/mail/Session

In order to execute a Java EE 5 application, you'll still need a Java EE 5 container, like for example the GlassFish application server.

我尝试使用 test 范围添加 Jersy，但没有成功。

<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-api</artifactId>
    <version>6.0</version>
    <scope>provided</scope>
</dependency>
<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-server</artifactId>
    <version>${jersey-version}</version>
    <scope>test</scope>
</dependency>

如何测试仅依赖于官方 Java EE API 的软件？

解决方案

provider (Jersey) 需要放在 pom.xml 中的 API (javeee-api) 之前。

<dependency>
    <groupId>com.sun.jersey</groupId>
    <artifactId>jersey-server</artifactId>
    <version>${jersey-version}</version>
    <scope>test</scope>
</dependency>
<dependency>
    <groupId>javax</groupId>
    <artifactId>javaee-api</artifactId>
    <version>6.0</version>
    <scope>provided</scope>
</dependency>

Answer 1

不确定这是否能解决您的问题，但 GlassFish Embedded 提供了 Java EE 6 实现。将此添加到您的 pom.xml:

<project>
  ...
  <repositories>
    <repository>
      <id>glassfish-extras-repository</id>
      <url>http://download.java.net/maven/glassfish/org/glassfish/extras</url>
    </repository>
  </repositories>
  ...
  <dependencies>
    <dependency>
      <groupId>org.glassfish.extras</groupId>
      <artifactId>glassfish-embedded-all</artifactId>
      <version>3.0.1</version>
      <scope>test</scope>
    </dependency>
    <dependency>
      <groupId>javax</groupId>
      <artifactId>javaee-api</artifactId>
      <version>6.0</version>
      <scope>provided</scope>
    </dependency>
    ...
  </dependencies>
  ...
</project>

在 javaee-api 之前 声明 glassfish-embedded-all 工件很重要。