From 907f69197d7b0b90ddbebae126e0545fa05ae991 Mon Sep 17 00:00:00 2001
From: James <1146556298@qq.com>
Date: Tue, 27 Mar 2018 19:56:56 +0800
Subject: [PATCH] =?UTF-8?q?=E4=BF=AE=E5=A4=8D=20tag=20=E9=87=8D=E5=A4=8D?=
 =?UTF-8?q?=E7=9A=84=E9=97=AE=E9=A2=98?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 .../me/zbl/fullstack/mapper/TagMapper.java    |  6 ++++
 .../service/impl/AdminBlogServiceImpl.java    | 31 +++++++++++--------
 2 files changed, 24 insertions(+), 13 deletions(-)

diff --git a/src/main/java/me/zbl/fullstack/mapper/TagMapper.java b/src/main/java/me/zbl/fullstack/mapper/TagMapper.java
index 006540d..b36bd44 100644
--- a/src/main/java/me/zbl/fullstack/mapper/TagMapper.java
+++ b/src/main/java/me/zbl/fullstack/mapper/TagMapper.java
@@ -47,4 +47,10 @@ public interface TagMapper extends IMyMapper<Tag> {
                   "GROUP BY tag_article.tag_id"
           })
   List<TagView> selectAllTagView();
+
+  @Select({
+                  "SELECT id,",
+                  "`name` FROM tag WHERE `name` = #{tagName}"
+          })
+  Tag selectTagByName(String tagName);
 }
\ No newline at end of file
diff --git a/src/main/java/me/zbl/fullstack/service/impl/AdminBlogServiceImpl.java b/src/main/java/me/zbl/fullstack/service/impl/AdminBlogServiceImpl.java
index a7651d1..bb6a39e 100644
--- a/src/main/java/me/zbl/fullstack/service/impl/AdminBlogServiceImpl.java
+++ b/src/main/java/me/zbl/fullstack/service/impl/AdminBlogServiceImpl.java
@@ -44,19 +44,24 @@ public void blogAdd(BlogAddForm form) {
     Integer articleId = article.getId();
     // 处理 tags
     String[] tags = form.getRawTags().split(",");
-    List<Integer> tagIds = new ArrayList<>();
-    for (int i = 0; i < tags.length; i++) {
-      Tag tag = new Tag();
-      tag.setName(tags[i]);
-      mTagMapper.insertSelective(tag);
-      Integer tagId = tag.getId();
-      tagIds.add(tagId);
-    }
-    for (Integer tagId : tagIds) {
-      TagArticle tagArticle = new TagArticle();
-      tagArticle.setTagId(tagId);
-      tagArticle.setArticleId(articleId);
-      mTagArticleMapper.insertSelective(tagArticle);
+    for (String item : tags) {
+      Tag expected = mTagMapper.selectTagByName(item);
+      if (null != expected) {
+        Integer id = expected.getId();
+        TagArticle tagArticle = new TagArticle();
+        tagArticle.setTagId(id);
+        tagArticle.setArticleId(articleId);
+        mTagArticleMapper.insertSelective(tagArticle);
+      } else {
+        Tag tag = new Tag();
+        tag.setName(item);
+        mTagMapper.insertSelective(tag);
+        Integer tagId = tag.getId();
+        TagArticle tagArticle = new TagArticle();
+        tagArticle.setTagId(tagId);
+        tagArticle.setArticleId(articleId);
+        mTagArticleMapper.insertSelective(tagArticle);
+      }
     }
   }