完成模块加载操作

Suomm · Mar 17, 2021 · 17f5afb · 17f5afb
1 parent c69123a
commit 17f5afb
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Showing 2 changed files with 17 additions and 2 deletions.
diff --git a/tran4f-graphics/src/main/java/com/github/tran4f/loader/ModuleLoader.java b/tran4f-graphics/src/main/java/com/github/tran4f/loader/ModuleLoader.java
@@ -37,6 +37,15 @@ public final class ModuleLoader {
     private ModuleLoader() {
     }
 
+    /**
+     * <p>被加载进入 JVM 的模块。可用以下代码，通过反射加载对象。
+     * <pre>
+     *     Class&lt;?&gt; aClass = moduleLayer.findLoader("module name").loadClass("class name");
+     * </pre>
+     * <p><b>特别注意：调用该变量之前必须调用 {@link #load(Collection, Collection)} 方法！</b>
+     */
+    public static ModuleLayer moduleLayer;
+
     /**
      * 根据模块名称，加载模块。
      *
@@ -46,12 +55,14 @@ private ModuleLoader() {
      * @exception FindException 模块加载失败
      */
     public static Map<String, Property> load(Collection<String> basePath, Collection<String> names) {
+        // 将文件夹中的模块添加到运行环境中
         ModuleFinder finder = ModuleFinder.of(basePath.stream().map(Path::of).toArray(Path[]::new));
         ModuleLayer parent = ModuleLayer.boot();
         Configuration cf = parent.configuration().resolve(finder, ModuleFinder.of(), names);
         ClassLoader scl = ClassLoader.getSystemClassLoader();
-        ModuleLayer layer = parent.defineModulesWithOneLoader(cf, scl);
-        return layer.modules()
+        moduleLayer = parent.defineModulesWithOneLoader(cf, scl);
+        // 加载模块的注解信息存入集合中
+        return moduleLayer.modules()
                 .stream()
                 .collect(Collectors.toMap(Module::getName, e -> e.getAnnotation(Property.class)));
     }

diff --git a/tran4f-graphics/src/main/java/com/github/tran4f/loader/YamlLoader.java b/tran4f-graphics/src/main/java/com/github/tran4f/loader/YamlLoader.java
@@ -42,11 +42,15 @@ public class YamlLoader {
     public Settings settings() {
         try (BufferedReader br = new BufferedReader(
                 new FileReader("conf/settings.yml"))) {
+            // 根据 settings.yml 文件创建实体类
             Settings settings = new Yaml().loadAs(br, Settings.class);
+            // 配置文件里没有任何内容
             if (settings == null)
                 settings = new Settings();
+            // 初始化默认设置
             return settings.init();
         } catch (IOException e) {
+            // 文件不存在直接返回默认设置
             return new Settings().init();
         }
     }