fix SearchExplainerService

@@ -620,7 +620,7 @@ public class SearchExplainerService {
 		FieldDesc fieldDesc = new FieldDesc();
 		fieldDesc.field = field;
 		fieldDesc.type = (String) fieldPropMap.get("type");
-		fieldDesc.index = (String) fieldPropMap.get("index");
+		fieldDesc.index = (Boolean)fieldPropMap.get("index");
 		fieldDesc.analyzer = (String) fieldPropMap.get("analyzer");
 		fieldDesc.search_analyzer = (String) fieldPropMap.get("search_analyzer");
 		if (fieldDesc.search_analyzer == null && fieldDesc.analyzer != null) {
@@ -738,7 +738,7 @@ public class SearchExplainerService {
 
 		String type;
 
-		String index;
+		Boolean index;
 
 		String analyzer;
 
@@ -751,8 +751,16 @@ public class SearchExplainerService {
 		}
 
 		public boolean noNeedAnalyzer() {
-			// 声明不分词的类型 或者 其他非string类型
-			return "not_analyzed".equals(index) || (type != null && !"string".equals(type));
+			if(index==null){
+				return false;
+			}
+			if(index==Boolean.TRUE){
+				return false;
+			}
+			if("text".equals(type)){
+				return false;
+			}
+			return true;
 		}
 
 		@Override