具有依赖注入的Java模块化

问题描述 投票:0回答:1

假设基于OpenJDK 11 + OpenJFX 11的应用程序。代码库在单个Java模块中组织(请参阅A Guide to Java 9 Modularity以供参考)。

直到现在,我将所有基于JavaFX的项目与Google的依赖项注入框架Guice结合在一起。对于模块化项目,这似乎不起作用...

SQLiteCompassApplication.java

public class SQLiteCompassApplication extends Application {

    public static void main(String[] args) {
        launch(args);
    }

    public void start(Stage stage) throws Exception {

         Injector injector = Guice.createInjector(new MyModule());

         FXMLLoader fxmlLoader = injector.getInstance(FXMLLoader.class);

         try(InputStream fxmlStream = getClass().getResourceAsStream("/view/View.fxml")) {

            Parent root = fxmlLoader.load(fxmlStream);
            stage.setScene(new Scene(root));
            stage.setTitle("SQLite Compass");
            stage.setOnCloseRequest(event -> System.exit(0));
            stage.show();
        }
    }
}

module-info.java

module org.x1c1b.sqlitecompass {

    requires javafx.controls;
    requires javafx.fxml;
    requires com.google.guice;

    exports org.x1c1b.sqlitecompass;
}

为了简单起见,Guice配置,这意味着已声明的Guice模块(与Java模块混淆的not)没有粘贴,但仍可用于非模块化项目。

执行此代码时,我收到以下异常:

Caused by: java.lang.reflect.InaccessibleObjectException: Unable to make field com.google.inject.Injector org.x1c1b.sqlitecompass.config.provider.FXMLLoaderProvider.injector accessible: module org.x1c1b.sqlitecompass does not "opens org.x1c1b.sqlitecompass.config.provider" to module com.google.guice
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:340)
    at java.base/java.lang.reflect.AccessibleObject.checkCanSetAccessible(AccessibleObject.java:280)
    at java.base/java.lang.reflect.Field.checkCanSetAccessible(Field.java:176)
    at java.base/java.lang.reflect.Field.setAccessible(Field.java:170)
    at [email protected]/com.google.inject.internal.SingleFieldInjector.<init>(SingleFieldInjector.java:38)
    at [email protected]/com.google.inject.internal.MembersInjectorStore.getInjectors(MembersInjectorStore.java:126)
    at [email protected]/com.google.inject.internal.MembersInjectorStore.createWithListeners(MembersInjectorStore.java:93)
    at [email protected]/com.google.inject.internal.MembersInjectorStore.access$000(MembersInjectorStore.java:36)
    at [email protected]/com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:45)
    at [email protected]/com.google.inject.internal.MembersInjectorStore$1.create(MembersInjectorStore.java:41)
    at [email protected]/com.google.inject.internal.FailableCache$1.load(FailableCache.java:40)
    at [email protected]/com.google.common.cache.LocalCache$LoadingValueReference.loadFuture(LocalCache.java:3444)
    at [email protected]/com.google.common.cache.LocalCache$Segment.loadSync(LocalCache.java:2193)
    at [email protected]/com.google.common.cache.LocalCache$Segment.lockedGetOrLoad(LocalCache.java:2152)
    at [email protected]/com.google.common.cache.LocalCache$Segment.get(LocalCache.java:2042)
    ... 39 more
Exception running application org.x1c1b.sqlitecompass.SQLiteCompassApplication

我可以通过将opens org.x1c1b.sqlitecompass.config.provider;粘贴到module-info.java来解决此问题。但这会导致进一步的例外...

我应该如何配置我的模块/ module-info.java以使其通常与Google Guice一起使用?是否可以同时使用Google GuiceModularity

编辑

当我更改以下几行时似乎起作用:

  • 将声明了我的[[Guice模块的exports org.x1c1b.sqlitecompass.config添加到module-info.java] >>使用附加的VM选项--add-opens java.base/java.lang=com.google.guice执行程序
  • 但是我想这比正式的解决方案更适合here,找到解决方法...

假设基于OpenJDK 11 + OpenJFX 11的应用程序。该代码库在单个Java模块中组织(请参阅Java 9模块化指南以供参考)。到目前为止,我将所有基于JavaFX的内容组合在一起...

java javafx dependency-injection java-9 java-module
1个回答
1
投票
您必须打开您的所有软件包,Guice会通过反射来访问它们。最简单的方法是将整个模块声明为open,方法是将该单词放在modulemodule-info.java前面。
© www.soinside.com 2019 - 2024. All rights reserved.