java - Eclipse 首选项页面

Question

我在 Eclipse 中创建了一个首选项页面，该首选项页面有两个字段

1. 服务器网址
2. 商店位置

如果用户打开此首选项对话框，更改 url 的值并应用它，产品将重新启动，重新启动后，当我检查 url 字段中的值时，它会按预期更改。当我更改 url 和目录的值时，仅更新其中之一，具体取决于稍后更改哪一项。这是我的 init 方法，它初始化首选项

public class DataStorePreferencePage extends FieldEditorPreferencePage implements IWorkbenchPreferencePage {

public static final String SERVER_URL = "prefs_server_url";
public static final String WORKSPACE_DIR = "prefs_workspace_dir";
public static final String KEEP_LOCKS = "prefs_keep_locks";
//public static final String RELEASE = "prefs_release";
public DataStorePreferencePage() {
    super(GRID);
}


@Override
public void init(IWorkbench workbench) {
    setPreferenceStore(Activator.getDefault().getPreferenceStore());
    getPreferenceStore().addPropertyChangeListener(new IPropertyChangeListener() {
        @Override
        public void propertyChange(PropertyChangeEvent event) {
            String property = event.getProperty();
            System.setProperty("datastoreserver_url", property);
            if (property.equals(DataStorePreferencePage.WORKSPACE_DIR) ||
                    property.equals(DataStorePreferencePage.SERVER_URL)) {

                if(MessageDialog.openConfirm(PlatformUI.getWorkbench().getActiveWorkbenchWindow().getShell(), "Information", "New settings will be applied after a restart.\nRestart now?"))
                    PlatformUI.getWorkbench().restart();

            }
        }
    });                     
}

@Override
protected void createFieldEditors() {
    StringFieldEditor urlEditor = new StringFieldEditor(SERVER_URL, "DataStore Server URL", getFieldEditorParent());
    StringFieldEditor workspaceDirEditor = new DirectoryFieldEditor(WORKSPACE_DIR, "Workspace directory:", getFieldEditorParent());
    BooleanFieldEditor keepLocksEditor = new BooleanFieldEditor(KEEP_LOCKS, "Keep locks (default setting):", getFieldEditorParent());
    //BooleanFieldEditor releaseEditor = new BooleanFieldEditor(RELEASE, "Release (default setting):", getFieldEditorParent());

    addField(workspaceDirEditor);
    addField(urlEditor);
    addField(keepLocksEditor);
    //addField(releaseEditor);
}

@Override
public boolean performOk() {

    return super.performOk();

}


}

问题:

新值存储在哪里？ Eclipse 从哪里获取任何 .ini 文件中的更改值？

如何同时更改这两个属性？

谢谢

Answer 1

等到调用 performOk 或 performApply 后再检查是否重新启动。

首选项值存储在首选项存储中。您可以通过以下方式获取它们:

IPreferenceStore store = getPreferenceStore();

String dir = store.getString(WORKSPACE_DIR);

String url = store.getString(SERVER_URL);