读写操作是用println以及readline代替的

package zh.codegym.task.task20.task2001; import java.io.*; import java.util.ArrayList; import java.util.Arrays; import java.util.List; /* 读取并写入文件Human */ public class Solution { public static void main(String[] args) { // 基于硬盘上文件的路径，更新传递给 createTempFile 方法的字符串。 try { File yourFile = File.createTempFile("你的文件名", null); OutputStream outputStream = new FileOutputStream(yourFile); InputStream inputStream = new FileInputStream(yourFile); Human smith = new Human("史密斯", new Asset("住宅", 999_999.99), new Asset("汽车", 2999.99)); smith.save(outputStream); outputStream.flush(); Human somePerson = new Human(); somePerson.load(inputStream); inputStream.close(); // 检查史密斯是否等于 somePerson } catch (IOException e) { // e.printStackTrace(); System.out.println("糟糕，我的生活出现问题了"); } catch (Exception e) { // e.printStackTrace(); System.out.println("糟糕，save/load 方法出现问题"); } } public static class Human { public String name; public List<Asset> assets = new ArrayList<>(); public Human() { } public Human(String name, Asset... assets) { this.name = name; if (assets != null) { this.assets.addAll(Arrays.asList(assets)); } } @Override public boolean equals(Object o) { if (this == o) return true; if (o == null || getClass() != o.getClass()) return false; Human human = (Human) o; if (name != null ? !name.equals(human.name) : human.name != null) return false; return assets != null ? assets.equals(human.assets) : human.assets == null; } @Override public int hashCode() { int result = name != null ? name.hashCode() :0; result = 31 * result + (assets != null ? assets.hashCode() : 0); return result; } public void save(OutputStream outputStream) throws Exception { // 实现此方法 PrintWriter printWriter = new PrintWriter(outputStream); printWriter.println(this.name); if (this.assets.size() > 0) { for (Asset current : this.assets){ printWriter.println(current.getName()); printWriter.println(current.getPrice()); } } printWriter.close(); } public void load(InputStream inputStream) throws Exception { // 实现此方法 BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream)); this.name = reader.readLine(); String assetName; String assetPrice; while (((assetName = reader.readLine()) != null) && ((assetPrice = reader.readLine()) != null)){ this.assets.add(new Asset(assetName, Double.parseDouble(assetPrice))); } reader.close(); } } }