本地代码提交

src/main/java/com/yaoyuan/jiscuss/common/Node.java

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+package com.yaoyuan.jiscuss.common;
+
+import com.yaoyuan.jiscuss.entity.custom.PostCustom;
+import lombok.Data;
+import org.springframework.beans.BeanUtils;
+
+import javax.persistence.Column;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+
+/**
+ * @author yaoyuan2.chu
+ * @Title:
+ * @Package com.yaoyuan.jiscuss.common
+ * @Description:
+ * @date 2020/8/17 14:51
+ */
+@Data
+public class Node {
+
+    public Node() {
+
+    }
+
+    private Integer id;
+
+    private Integer discussionId;
+
+    private Integer number;
+
+    private Date time;
+
+    private Integer userId;
+
+    private String type;
+
+    private String content;
+
+    private Integer parentId;
+
+    private Date editTime;
+
+    private Integer editUserId;
+
+    private String ipAddress;
+
+    private String copyright;
+
+    private Integer isApproved;
+
+    private Integer createId;
+
+    private Date createTime;
+
+    //用户表相关
+    private String avatar;
+
+    private String username;
+
+    private String realname;
+
+    private String avatarReply;
+
+    private String usernameReply;
+
+    private String realnameReply;
+
+    //下一条回复
+    private List<Node> nextNodes = new ArrayList<Node>();
+
+
+    /**
+     * 将单个node添加到链表中
+     *
+     * @param list
+     * @param node
+     * @return
+     */
+    public static boolean addNode(List<Node> list, Node node) {
+        for (Node node1 : list) {   //循环添加
+            if (node1.getId().equals(node.getParentId())) {   //判断留言的上一段是都是这条留言
+                node1.getNextNodes().add(node);   //是，添加，返回true;
+                System.out.println("添加了一个");
+                return true;
+            } else {     //否则递归继续判断
+                if (node1.getNextNodes().size() != 0) {
+                    if (Node.addNode(node1.getNextNodes(), node)) {
+                        return true;
+                    }
+                }
+            }
+        }
+        return false;
+    }
+
+    /**
+     * 将查出来的lastId不为null的回复都添加到第一层Node集合中
+     *
+     * @param firstList
+     * @param thenList
+     * @return
+     */
+    public static List addAllNode(List<Node> firstList, List<PostCustom> thenList) {
+        while (thenList.size() != 0) {
+            int size = thenList.size();
+            for (int i = 0; i < size; i++) {
+                Node node = new Node();
+                BeanUtils.copyProperties(thenList.get(i), node);
+                if (Node.addNode(firstList, node)) {
+                    thenList.remove(i);
+                    i--;
+                    size--;
+                }
+            }
+        }
+        return firstList;
+    }
+
+    //打印
+    public static void show(List<Node> list) {
+        for (Node node : list) {
+            System.out.println(node.getUserId() + " 用户回复了你：" + node.getContent());
+            if (node.getNextNodes().size() != 0) {
+                Node.show(node.getNextNodes());
+            }
+        }
+    }
+
+
+}