我有两种方法： saveSubscribedFeeds() 以及 loadSubscribedFeeds() . 在save方法中，我将一些数据保存到文件中 feedsFile 在如下参数中：

@Override
public void saveSubscribedFeeds(List<Feed> feeds, File feedsFile) {
    try {
        PrintWriter pw = new PrintWriter(new FileOutputStream(feedsFile));
        for (Feed feed : feeds) {
            pw.println(feed.getTitle());
            pw.println(feed.getDescription());
            pw.println(feed.getEntries());
            pw.println(feed.getUrl());
            pw.println(feed.getPublishedDateString());
        }
        pw.close();
     }
    catch(IOException i) {
        i.printStackTrace();
     }
}

在load方法中，我尝试加载完全相同的文件 feedsFile 作为列表返回，为此我使用了扫描仪。

@Override
public List<Feed> loadSubscribedFeeds(File feedsFile) throws FileNotFoundException {    

    Scanner s = new Scanner(feedsFile.getAbsoluteFile());
    List<Feed> listFeed = new ArrayList<>();

    while (s.hasNextLine()) {
        listFeed.add(new Feed(s.nextLine()));
    }
    s.close();

    return listFeed;
}

但是，junit测试告诉我，我的列表与读取对象不匹配：

if (!feedsTemp.get(0).getUrl().equals(TEST_FEED_URL)
            || !feedsTemp.get(0).getTitle().equals(TEST_FEED_TITLE)
            || !feedsTemp.get(0).getDescription().equals(TEST_FEED_DESC)) {
        System.err.println("The data read from save-file '" + FEEDS_FILE.getName() + "' doesn't match the test input data!");
        fail("feed sample data (" + FEEDS_FILE.getAbsolutePath() + ") doesn't match read object!");
    }

我做错什么了？下面是feed类：

import java.io.ObjectOutputStream;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
import com.rometools.rome.feed.synd.SyndEntry;
import com.rometools.rome.feed.synd.SyndFeed;

import de.uk.java.feader.utils.FeaderUtils;

public class Feed implements Serializable, Comparable<Feed> {

private static final long serialVersionUID = 1L;

private String url;
private String title;
private String description;
private String publishedDateString;
private List<Entry> entries;

public Feed() {

}

public Feed(String url) {
    super();
    this.url = url;
    this.entries = new ArrayList<Entry>();
    this.title = "";
    this.description = "";
    this.publishedDateString = "";
}

/**
 * Creates an instance of a Feed and transfers the feed
 * data form a SyndFeed object to the new instance.
 * @param url The URL string of this feed
 * @param sourceFeed The SyndFeed object holding the data for this feed instance
 */
public Feed(String url, SyndFeed sourceFeed) {
    this(url);
    setTitle(sourceFeed.getTitle());
    setDescription(sourceFeed.getDescription());

    if (sourceFeed.getPublishedDate() != null)
        setPublishedDateString(FeaderUtils.DATE_FORMAT.format(sourceFeed.getPublishedDate()));

    for (SyndEntry entryTemp : sourceFeed.getEntries()) {
        Entry entry = new Entry(entryTemp.getTitle());
        entry.setContent(entryTemp.getDescription().getValue());
        entry.setLinkUrl(entryTemp.getLink());
        entry.setParentFeedTitle(getTitle());
        if (entryTemp.getPublishedDate() != null) {
            entry.setPublishedDateString(FeaderUtils.DATE_FORMAT.format(entryTemp.getPublishedDate()));
        }
        addEntry(entry);
    }
}

public String getUrl() {
    return url;
}

public void setTitle(String title) {
    this.title = title != null ? title : "";
}

public String getTitle() {
    return title;
}

public void setDescription(String description) {
    this.description = description != null ? description : "";
}

public String getDescription() {
    return description;
}

public void setPublishedDateString(String publishedDateString) {
    this.publishedDateString = publishedDateString != null ? publishedDateString : "";
}

public String getPublishedDateString() {
    return publishedDateString;
}

/**
 * Returns a short string containing a combination of meta data for this feed
 * @return info string
 */
public String getShortFeedInfo() {
    return getTitle() + " [" +
            getEntriesCount() + " entries]: " + 
            getDescription() +
            (getPublishedDateString() != null && getPublishedDateString().length() > 0
                ? " (updated " + getPublishedDateString() + ")"
                : "");
}

public void addEntry(Entry entry) {
    if (entry != null) entries.add(entry);
}

public List<Entry> getEntries() {
    return entries;
}

public int getEntriesCount() {
    return entries.size();
}

@Override
public boolean equals(Object obj) {
    return (obj instanceof Feed)
        && ((Feed)obj).getUrl().equals(url);
}

@Override
public int hashCode() {
    return url.hashCode();
}

@Override
public String toString() {
    return getTitle();
}

@Override
public int compareTo(Feed o) {
    return getPublishedDateString().compareTo(o.getPublishedDateString());
}

}