Merge branch 'dev' into test

@@ -102,7 +102,6 @@ func (m *Article) SetSummary(sectionList []*ArticleSection) {
 	//设置内容概要
 
 	// 截取内容 50个字
-	runeNumber := 0  //字数
 	stringIndex := 0 //字符串长度
 	content := ""
 	for i := range sectionList {
@@ -112,12 +111,9 @@ func (m *Article) SetSummary(sectionList []*ArticleSection) {
 			break
 		}
 	}
-	for i := range content {
-		if runeNumber > 50 {
-			break
-		}
-		runeNumber += 1
-		stringIndex = i
+	stringIndex = len(content)
+	if len(content) > 50 {
+		stringIndex = 50
 	}
 	m.Summary = content[0:stringIndex]
 }