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package com.yaoyuan.jiscuss.common;
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import com.yaoyuan.jiscuss.entity.custom.PostCustom;
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import lombok.Data;
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import org.springframework.beans.BeanUtils;
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import javax.persistence.Column;
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import java.util.ArrayList;
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import java.util.Date;
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import java.util.List;
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/**
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* @author yaoyuan2.chu
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* @Title:
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* @Package com.yaoyuan.jiscuss.common
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* @Description:
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* @date 2020/8/17 14:51
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*/
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@Data
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public class Node {
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public Node() {
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}
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private Integer id;
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private Integer discussionId;
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private Integer number;
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private Date time;
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private Integer userId;
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private String type;
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private String content;
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private Integer parentId;
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private Date editTime;
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private Integer editUserId;
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private String ipAddress;
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private String copyright;
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private Integer isApproved;
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private Integer createId;
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private Date createTime;
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//用户表相关
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private String avatar;
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private String username;
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private String realname;
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private String avatarReply;
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private String usernameReply;
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private String realnameReply;
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//下一条回复
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private List<Node> nextNodes = new ArrayList<Node>();
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/**
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* 将单个node添加到链表中
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*
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* @param list
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* @param node
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* @return
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*/
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public static boolean addNode(List<Node> list, Node node) {
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for (Node node1 : list) { //循环添加
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if (node1.getId().equals(node.getParentId())) { //判断留言的上一段是都是这条留言
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node1.getNextNodes().add(node); //是，添加，返回true;
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System.out.println("添加了一个");
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return true;
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} else { //否则递归继续判断
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if (node1.getNextNodes().size() != 0) {
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if (Node.addNode(node1.getNextNodes(), node)) {
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return true;
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}
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}
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}
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}
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return false;
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}
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/**
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* 将查出来的lastId不为null的回复都添加到第一层Node集合中
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*
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* @param firstList
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* @param thenList
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* @return
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*/
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public static List addAllNode(List<Node> firstList, List<PostCustom> thenList) {
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while (thenList.size() != 0) {
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int size = thenList.size();
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for (int i = 0; i < size; i++) {
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Node node = new Node();
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BeanUtils.copyProperties(thenList.get(i), node);
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if (Node.addNode(firstList, node)) {
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thenList.remove(i);
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i--;
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size--;
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}
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}
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}
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return firstList;
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}
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//打印
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public static void show(List<Node> list) {
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for (Node node : list) {
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System.out.println(node.getUserId() + " 用户回复了你：" + node.getContent());
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if (node.getNextNodes().size() != 0) {
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Node.show(node.getNextNodes());
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}
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}
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}
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}
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@@ -0,0 +1,140 @@
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package com.yaoyuan.jiscuss.common;
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import com.yaoyuan.jiscuss.entity.custom.PostCustom;
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import org.springframework.beans.BeanUtils;
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import java.io.BufferedReader;
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import java.io.Reader;
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import java.sql.Clob;
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import java.util.*;
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/**
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* @author yaoyuan2.chu
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* @Title:
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* @Package com.yaoyuan.jiscuss.common
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* @Description:
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* @date 2020/9/10 15:47
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*/
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public class PostCommonUtil {
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public static List<PostCustom> getNewPostsObjMap(List<Map<String, Object>> posts) {
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List<PostCustom> postCustomList = new ArrayList<>();
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for (Map<String, Object> mapObj : posts) {
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PostCustom postCustom = new PostCustom();
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postCustom.setId(Integer.parseInt(String.valueOf(mapObj.get("id"))));
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postCustom.setParentId(mapObj.get("parent_id") != null ? Integer.parseInt(String.valueOf(mapObj.get("parent_id"))) : null);
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if (null != mapObj.get("create_time")) {
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postCustom.setCreateTime((Date) mapObj.get("create_time"));
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}
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String content = "";
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if (mapObj.get("content") != null) {
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if (mapObj.get("content") instanceof Clob) {
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Clob clob = (Clob) mapObj.get("content");
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content = PostCommonUtil.clobToString(clob);
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} else if (mapObj.get("content") instanceof String) {
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content = String.valueOf(mapObj.get("content"));
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}
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}
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postCustom.setContent(content);
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String avatar = "";
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if (mapObj.get("create_avatar") != null) {
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if (mapObj.get("create_avatar") instanceof Clob) {
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Clob clob = (Clob) mapObj.get("create_avatar");
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avatar = PostCommonUtil.clobToString(clob);
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} else if (mapObj.get("create_avatar") instanceof String) {
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avatar = String.valueOf(mapObj.get("create_avatar"));
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}
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}
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postCustom.setAvatar(avatar);
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postCustom.setUsername(mapObj.get("create_username") != null ? String.valueOf(mapObj.get("create_username")) : null);
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postCustom.setRealname(mapObj.get("create_realname") != null ? String.valueOf(mapObj.get("create_realname")) : null);
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String avatarReply = "";
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if (mapObj.get("user_avatar") != null) {
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if (mapObj.get("user_avatar") instanceof Clob) {
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Clob clob = (Clob) mapObj.get("user_avatar");
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avatarReply = PostCommonUtil.clobToString(clob);
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} else if (mapObj.get("user_avatar") instanceof String) {
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avatarReply = String.valueOf(mapObj.get("user_avatar"));
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}
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}
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postCustom.setAvatarReply(avatarReply);
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postCustom.setUsernameReply(mapObj.get("user_username") != null ? String.valueOf(mapObj.get("user_username")) : null);
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postCustom.setRealnameReply(mapObj.get("user_realname") != null ? String.valueOf(mapObj.get("user_realname")) : null);
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postCustomList.add(postCustom);
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}
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return postCustomList;
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}
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public static List<PostCustom> getNewPostsObjCustom(List<PostCustom> postCustomList) {
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List<PostCustom> mainList = new ArrayList<>();
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Map<String, Object> postMap = new LinkedHashMap<>();
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for (PostCustom mapObj : postCustomList) {
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if (null == mapObj.getParentId()) {
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mainList.add(mapObj);
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} else {
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List<PostCustom> tempList = new ArrayList<>();
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if (postMap.containsKey(String.valueOf(mapObj.getParentId()))) {
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tempList = (List<PostCustom>) postMap.get(String.valueOf(mapObj.getParentId()));
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tempList.add(mapObj);
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postMap.put(String.valueOf(mapObj.getParentId()), tempList);
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} else {
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tempList.add(mapObj);
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postMap.put(String.valueOf(mapObj.getParentId()), tempList);
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}
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}
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}
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List<PostCustom> mainListResult = new ArrayList<>();
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for (PostCustom mapObj : mainList) {
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if (postMap.containsKey(String.valueOf(mapObj.getId()))) {
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PostCustom newObj = new PostCustom();
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BeanUtils.copyProperties(mapObj, newObj);
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newObj.setChild((List<PostCustom>) postMap.get(String.valueOf(mapObj.getId())));
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mainListResult.add(newObj);
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} else {
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mainListResult.add(mapObj);
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}
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}
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return mainListResult;
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}
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// Clob类型转换成String类型
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public static String clobToString(final Clob clob) {
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if (clob == null) {
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return null;
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}
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Reader is = null;
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try {
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is = clob.getCharacterStream();
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} catch (Exception e) {
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e.printStackTrace();
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}
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BufferedReader br = new BufferedReader(is);
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String str = null;
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try {
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str = br.readLine(); // 读取第一行
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} catch (Exception e) {
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e.printStackTrace();
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}
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StringBuffer sb = new StringBuffer();
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while (str != null) { // 如果没有到达流的末尾，则继续读取下一行
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sb.append(str);
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try {
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str = br.readLine();
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} catch (Exception e) {
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e.printStackTrace();
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}
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}
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String returnString = sb.toString();
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return returnString;
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}
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}
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