获取每个插件(bunlde)的国际化文件

本文链接：https://blog.youkuaiyun.com/cuser_online/article/details/7089411

本文详细介绍了如何获取插件的国际化文件，包括在MANIFEST.MF中添加配置、在bundle根目录下放置相关文件，并提供了代码示例来演示如何获取国际化字符串和图像描述。

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获取每个插件(bunlde)的国际化文件(plugin.properties或plugin_locale名称.properties) 。

比如plugin.properties或plugin_zh_CN.properties等文件。

  注意事项：
   1.需要在MANI-INF下面的MANIFEST.MF中添加Bundle-Localization: plugin内容。

   2.同时在bundle根目录下必须有plugin.properties等文件。

public PluginResource(Plugin plugin)
    {
        base = plugin.getBundle().getEntry("/");//获取插件的根目录
        bundle = Platform.getResourceBundle(plugin.getBundle());//获取plugin.properties或plugin_local名称.properties
   }

    完整代码
   public class PluginResource
{

private Map imageCache = new HashMap();

private PluginResource backup;

private Object base;

private ResourceBundle bundle;

    public void setBackup(PluginResource backup)
    {
        this.backup = backup;
    }

    public PluginResource(Class clazz)
    {
        base = clazz;
        bundle = ResourceBundle.getBundle("plugin", Locale
                .getDefault(), clazz.getClassLoader());
    }

    public PluginResource(Plugin plugin)
    {
        base = plugin.getBundle().getEntry("/");
        bundle = Platform.getResourceBundle(plugin.getBundle());
    }

    /**
     * 从plugin*.properties文件中获得国际化字符串
     * @param key
     * @return
     */
    public String getString(String key)
    {
        String result = null;
        try
        {
            if (bundle != null)
                result = bundle.getString(key);
        } catch (MissingResourceException e)
        {
        }
        try
        {
            if (result == null && backup != null)
                result = backup.getString(key);
        } catch (MissingResourceException e1)
        {
        }
        if (result == null)
            return key;
        return result;
    }

    /**
     * 根据路径获得相应的imageDescriptor
     * @param key
     * @return
     */
    public ImageDescriptor getImageDescriptor(String key)
    {
        ImageDescriptor result = null;
        if (base instanceof URL)
        {
            try
            {
                result = ImageDescriptor.createFromURL(new URL(
                        (URL) base, key));
            } catch (MalformedURLException e)
            {
                result = ImageDescriptor.getMissingImageDescriptor();
            }
        } else if (base instanceof Class)
        {
            result = ImageDescriptor
                    .createFromFile((Class) base, key);
        }

        if ((result == null || result.getImageData() == null)
                && backup != null)
            result = backup.getImageDescriptor(key);
        if(result == null || result.getImageData() == null)
        return null;
        return result;
    }

    /**
     * 根据key从缓存中获得image；若缓存中不存在，则查找descriptor，创建image返回
     * @param key
     * @return
     */
    public Image getImage(String key)
    {
        Image image = (Image) imageCache.get(key);
        if (image != null)
            return image;
        ImageDescriptor d = getImageDescriptor(key);
        if (d == null)
            return null;
        image = d.createImage();
        imageCache.put(key, image);
        return image;
    }
}