自定义词典支持热更新：#563

src/main/java/com/hankcs/hanlp/dictionary/CustomDictionary.java

@@ -41,14 +41,11 @@ public class CustomDictionary
      */
     public static BinTrie<CoreDictionary.Attribute> trie;
     public static DoubleArrayTrie<CoreDictionary.Attribute> dat = new DoubleArrayTrie<CoreDictionary.Attribute>();
-    /**
-     * 第一个是主词典，其他是副词典
-     */
-    public final static String path[] = HanLP.Config.CustomDictionaryPath;
 
     // 自动加载词典
     static
     {
+        String path[] = HanLP.Config.CustomDictionaryPath;
         long start = System.currentTimeMillis();
         if (!loadMainDictionary(path[0]))
         {
@@ -69,6 +66,7 @@ private static boolean loadMainDictionary(String mainPath)
         LinkedHashSet<Nature> customNatureCollector = new LinkedHashSet<Nature>();
         try
         {
+            String path[] = HanLP.Config.CustomDictionaryPath;
             for (String p : path)
             {
                 Nature defaultNature = Nature.n;
@@ -525,4 +523,17 @@ public static void parseText(String text, AhoCorasickDoubleArrayTrie.IHit<CoreDi
             processor.hit(searcher.begin, searcher.begin + searcher.length, searcher.value);
         }
     }
+
+    /**
+     * 热更新（重新加载）<br>
+     * 集群环境（或其他IOAdapter）需要自行删除缓存文件（路径 = HanLP.Config.CustomDictionaryPath[0] + Predefine.BIN_EXT）
+     * @return 是否加载成功
+     */
+    public static boolean reload()
+    {
+        String path[] = HanLP.Config.CustomDictionaryPath;
+        if (path == null || path.length == 0) return false;
+        new File(path[0] + Predefine.BIN_EXT).delete(); // 删掉缓存
+        return loadMainDictionary(path[0]);
+    }
 }

src/test/java/com/hankcs/hanlp/dictionary/CustomDictionaryTest.java

@@ -0,0 +1,12 @@
+package com.hankcs.hanlp.dictionary;
+
+import junit.framework.TestCase;
+
+public class CustomDictionaryTest extends TestCase
+{
+    public void testReload() throws Exception
+    {
+        assertEquals(true, CustomDictionary.reload());
+        assertEquals(true, CustomDictionary.contains("中华白海豚"));
+    }
+}