如何解决 Maven EnforcedBytecodeVersion 失败？

Question

当尝试运行 Maven 强制执行器由于某些类符合 1.9 而失败时，因为整个项目被限制为 dto 1.8。以下是日志的堆栈跟踪。该特定依赖项由另一个不能排除的 jar 提取，因为它具有编译时依赖项。

[INFO] Checking unresolved references to org.codehaus.mojo.signature:java18:1.0
[INFO] Restricted to JDK 1.8 yet javax.json.bind:javax.json.bind-api:jar:1.0:compile contains module-info.class targeted to JDK 1.9
[WARNING] Rule 14: org.apache.maven.plugins.enforcer.EnforceBytecodeVersion failed with message:
Found Banned Dependency: javax.json.bind:javax.json.bind-api:jar:1.0

Answer 1

通过在子 pom 中将目标字节码覆盖为 1.9 能够解决 enforcer 问题，如下所示。

<plugin>
    <artifactId>maven-enforcer-plugin</artifactId>
    <executions>
      <execution>
        <goals>
          <goal>enforce</goal>
        </goals>
        <configuration>
          <rules>
            <enforceBytecodeVersion>
              <maxJdkVersion>1.9</maxJdkVersion>
            </enforceBytecodeVersion>
          </rules>
          <fail>true</fail>
        </configuration>
      </execution>
    </executions>
  </plugin>

Answer 2

这似乎是你误解了 enforceBytecodeversion 的意图...如果他们使用字节码作为声明的更新版本，它将检查所有依赖项，这意味着高于 JDK 8 只是提升 maxJdkVersion没有解决问题。该问题与您使用的依赖项有关....

The dependency: javax.json.bin:javax.json.bind-api 
contains a `module-info.class` file which is related to JDK 9 ...

如果您确定该依赖项中的所有代码都没有使用 JDK 9 个特定的东西，您必须将 module-info.class 排除在检查执行规则之外...

更新：这可以通过使用 following:

来实现

<project>
  [...]
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-enforcer-plugin</artifactId>
        <version>3.0.0-M1</version>
        <executions>
          <execution>
            <id>enforce-bytecode-version</id>
            <goals>
              <goal>enforce</goal>
            </goals>
            <configuration>
              <rules>
                <enforceBytecodeVersion>
                  <maxJdkVersion>1.8</maxJdkVersion>
                  <ignoreClasses>
                    <ignoreClass>module-info</ignoreClass>
                  </ignoreClasses>
                </enforceBytecodeVersion>
              </rules>
            </configuration>
          </execution>
        </executions>
        <dependencies>
          <dependency>
            <groupId>org.codehaus.mojo</groupId>
            <artifactId>extra-enforcer-rules</artifactId>
            <version>1.0-beta-9</version>
          </dependency>
        </dependencies>
      </plugin>
    </plugins>
  </build>
  [...]
</project>

如何解决 Maven EnforcedBytecodeVersion 失败？

How to resolve maven EnforcedBytecodeVersion failure?

java

maven-3

maven

maven-enforcer-plugin