java/w10/Article.java

package com.example.datacollect.model;

import java.util.ArrayList;
import java.util.List;
import java.util.Objects;

public class Article {
    private String title;
    private String url;
    private String content;
    private String author;
    private String publicDate;

    public Article() {
        this.title = "";
        this.url = "";
        this.content = "";
        this.author = "";
        this.publicDate = "";
    }

    public Article(String title, String url, String content) {
        this.title = sanitize(title);
        this.url = sanitize(url);
        this.content = sanitize(content);
        this.author = "";
        this.publicDate = "";
    }

    public Article(String title, String url, String content, String author, String publicDate) {
        this.title = sanitize(title);
        this.url = sanitize(url);
        this.content = sanitize(content);
        this.author = sanitize(author);
        this.publicDate = sanitize(publicDate);
    }

    private String sanitize(String value) {
        return value == null ? "" : value.trim();
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = sanitize(title);
    }

    public String getUrl() {
        return url;
    }

    public void setUrl(String url) {
        this.url = sanitize(url);
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = sanitize(content);
    }

    public String getAuthor() {
        return author;
    }

    public void setAuthor(String author) {
        this.author = sanitize(author);
    }

    public String getPublicDate() {
        return publicDate;
    }

    public void setPublicDate(String publicDate) {
        this.publicDate = sanitize(publicDate);
    }

    public boolean hasTitle() {
        return title != null && !title.isEmpty();
    }

    public boolean hasUrl() {
        return url != null && !url.isEmpty();
    }

    public boolean hasContent() {
        return content != null && !content.isEmpty();
    }

    public boolean hasAuthor() {
        return author != null && !author.isEmpty();
    }

    public boolean hasPublicDate() {
        return publicDate != null && !publicDate.isEmpty();
    }

    public boolean isValid() {
        return hasTitle() && hasUrl();
    }

    public static List<Article> createList(int count) {
        List<Article> articles = new ArrayList<>();
        for (int i = 0; i < count; i++) {
            articles.add(new Article());
        }
        return articles;
    }

    public static Article of(String title, String url) {
        return new Article(title, url, "");
    }

    public static Article of(String title, String url, String content) {
        return new Article(title, url, content);
    }

    public static Article of(String title, String url, String content, String author, String publicDate) {
        return new Article(title, url, content, author, publicDate);
    }

    @Override
    public boolean equals(Object o) {
        if (this == o) return true;
        if (o == null || getClass() != o.getClass()) return false;
        Article article = (Article) o;
        return Objects.equals(title, article.title) &&
                Objects.equals(url, article.url);
    }

    @Override
    public int hashCode() {
        return Objects.hash(title, url);
    }

    @Override
    public String toString() {
        return "Article{" +
                "title='" + title + '\'' +
                ", url='" + url + '\'' +
                ", author='" + author + '\'' +
                ", publicDate='" + publicDate + '\'' +
                ", contentLength=" + (content != null ? content.length() : 0) +
                '}';
    }

    public String toSummary() {
        StringBuilder sb = new StringBuilder();
        sb.append("标题: ").append(title).append("\n");
        sb.append("URL: ").append(url).append("\n");
        if (hasAuthor()) {
            sb.append("作者: ").append(author).append("\n");
        }
        if (hasPublicDate()) {
            sb.append("日期: ").append(publicDate).append("\n");
        }
        return sb.toString();
    }
}