我正在使用 Google Guice 作为 IOC 容器开发 Java Swing 应用程序。我直接注入(inject)组件,但这让 Guice 在 EDT 之外 创建组件。
应用程序看起来有点像这样:
private Panel1 panel1;
private Panel2 panel2;
@Inject
public class Application(Panel1 panel1, Panel2 panel2) {
this.panel1 = panel1;
this.panel2 = panel2;
}
看题here和 here ,我得出的结论是注入(inject) loader 而不是直接注入(inject)组件。
private PanelLoader1 loader1;
private PanelLoader2 loader2;
private Panel1 panel1;
private Panel2 panel2;
@Inject
public class Application(PanelLoader1 loader1, PanelLoader2 loader2) {
this.loader1 = loader1;
this.loader2 = loader2;
loader1.load();
loader2.load();
this.panel1 = loader1.get();
this.panel2 = loader2.get();
}
public class PanelLoader {
private Panel panel;
public void load() {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
panel = new Panel();
}
});
}
public Panel get() {
return panel;
}
}
这是正确的吗?这样做有什么最佳做法吗?
最佳答案
如果您想使用“加载程序”,您应该实现 com.google.inject.Provider
。查看 http://code.google.com/p/google-guice/wiki/InjectingProviders 中的示例
您不需要自己注入(inject)提供者,您可以配置模块以注入(inject)由提供者创建的对象:
public class PanelModule extends AbstractModule {
@Override
protected void configure() {
bind(Panel1.class).toProvider(Panel1Provider.class);
}
private static class Panel1Provider implements Provider<Panel1> {
private Panel1 panel1;
@Override
public Panel1 get() {
try {
EventQueue.invokeAndWait(new Runnable() {
@Override
public void run() {
panel1 = new Panel1();
}
});
} catch (InvocationTargetException e) {
throw new RuntimeException(e); // should not happen
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
}
return panel1;
}
或者,如果每个组件只需要一个实例,您可以将实例直接绑定(bind)到类型:
public class PanelModule extends AbstractModule {
Panel1 panel1;
Panel2 panel2;
@Override
protected void configure() {
try {
EventQueue.invokeAndWait(new Runnable() {
@Override
public void run() {
panel1 = new Panel1();
panel2 = new Panel2();
}
});
} catch (InvocationTargetException e) {
throw new RuntimeException(e); // should not happen
} catch (InterruptedException e) {
Thread.currentThread().interrupt();
}
bind(Panel1.class).toInstance(panel1);
bind(Panel2.class).toInstance(panel2);
}
关于java - 使用 Guice 注入(inject) Swing 组件的最佳实践?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/10613914/