新增文件

2020-09-10 17:07:21 +08:00
parent f70c890b4d
commit d0154d9447
4 changed files with 165 additions and 0 deletions
@@ -0,0 +1,93 @@
+package com.yaoyuan.jiscuss.common;
+
+import com.yaoyuan.jiscuss.entity.custom.PostCustom;
+import org.springframework.beans.BeanUtils;
+
+import java.io.BufferedReader;
+import java.io.Reader;
+import java.sql.Clob;
+import java.util.ArrayList;
+import java.util.LinkedHashMap;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * @author yaoyuan2.chu
+ * @Title:
+ * @Package com.yaoyuan.jiscuss.common
+ * @Description:
+ * @date 2020/9/10 15:47
+ */
+public class PostCommonUtil {
+
+
+    public static List<PostCustom> getNewPostsObjCustom(List<PostCustom> postCustomList) {
+        List<PostCustom> mainList = new ArrayList<>();
+        Map<String, Object> postMap = new LinkedHashMap<>();
+        for(PostCustom mapObj : postCustomList){
+            if(null == mapObj.getParentId() ){
+                mainList.add(mapObj);
+            }else{
+                List<PostCustom> tempList = new ArrayList<>();
+                if(postMap.containsKey(String.valueOf(mapObj.getParentId()))){
+                    tempList = (List<PostCustom>) postMap.get(String.valueOf(mapObj.getParentId()));
+                    tempList.add(mapObj);
+                    postMap.put(String.valueOf(mapObj.getParentId()),tempList);
+                }else{
+                    tempList.add(mapObj);
+                    postMap.put(String.valueOf(mapObj.getParentId()),tempList);
+                }
+            }
+        }
+        List<PostCustom> mainListResult = new ArrayList<>();
+        for(PostCustom mapObj : mainList){
+            if(postMap.containsKey(String.valueOf(mapObj.getId()))){
+                PostCustom newObj = new PostCustom();
+                BeanUtils.copyProperties(mapObj , newObj);
+                newObj.setChild((List<PostCustom>) postMap.get(String.valueOf(mapObj.getId())));
+                mainListResult.add(newObj);
+            }else{
+                mainListResult.add(mapObj);
+            }
+        }
+
+        return mainListResult;
+    }
+
+    // Clob类型转换成String类型
+    public static String clobToString(final Clob clob) {
+
+        if (clob == null) {
+            return null;
+        }
+
+        Reader is = null;
+        try {
+            is = clob.getCharacterStream();
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+        BufferedReader br = new BufferedReader(is);
+
+        String str = null;
+        try {
+            str = br.readLine();    // 读取第一行
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+
+        StringBuffer sb = new StringBuffer();
+        while (str != null) {    // 如果没有到达流的末尾，则继续读取下一行
+            sb.append(str);
+            try {
+                str = br.readLine();
+            } catch (Exception e) {
+                e.printStackTrace();
+            }
+        }
+
+        String returnString = sb.toString();
+
+        return returnString;
+    }
+}