序列化对象:
package com.chen.seriaizable; import java.io.Serializable; import java.util.List; @SuppressWarnings("serial") public class Student implements Serializable { private String name; private String id; private int age; private List<Student> students; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getId() { return id; } public void setId(String id) { this.id = id; } public int getAge() { return age; } public void setAge(int age) { this.age = age; } public List<Student> getStudents() { return students; } public void setStudents(List<Student> students) { this.students = students; } @Override public String toString() { StringBuffer stringBuffer = new StringBuffer(); stringBuffer.append("id:" + this.id).append("\n"); stringBuffer.append("name:" + this.name).append("\n"); stringBuffer.append("age:" + this.age).append("\n"); return stringBuffer.toString(); } }
package com.chen.seriaizable; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.ObjectInputStream; import java.io.ObjectOutputStream; import java.util.ArrayList; import java.util.List; public class SaveStudent { private Student student; // 序列化文件保存位置 private String path = "C:/student.Serializable"; public void writeStudent() { List<Student> students = new ArrayList<Student>(); student = new Student(); Student student1 = new Student(); student1.setAge(1); student1.setId("1"); student1.setName("张1"); students.add(student1); Student student2 = new Student(); student2.setAge(2); student2.setId("2"); student2.setName("张2"); students.add(student2); Student student3 = new Student(); student3.setAge(3); student3.setId("3"); student3.setName("张3"); students.add(student3); Student student4 = new Student(); student4.setAge(4); student4.setId("4"); student4.setName("张4"); Student student41 = new Student(); student41.setAge(41); student41.setId("41"); student41.setName("张41"); List<Student> students4 = new ArrayList<Student>(); students4.add(student41); student4.setStudents(students4); students.add(student4); student.setAge(500); student.setId("100"); student.setName("张A000"); student.setStudents(students); try { ObjectOutputStream objectOutputStream = new ObjectOutputStream(new FileOutputStream(path)); objectOutputStream.writeObject(student); objectOutputStream.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } System.out.println("写完"); } public void readStudent() { try { ObjectInputStream objectInputStream = new ObjectInputStream(new FileInputStream(path)); student = (Student) objectInputStream.readObject(); System.out.println(student.getAge()); objectInputStream.close(); } catch (Exception e) { e.printStackTrace(); } System.out.println("读完"); } @Override public String toString() { readStudent(); StringBuffer stringBuffer = new StringBuffer(100); studentToString(stringBuffer, student); return stringBuffer.toString(); } public void studentToString(StringBuffer stringBuffer, Student studentObj) { if (student != null) { stringBuffer.append("id:" + studentObj.toString()).append("\n"); if (studentObj.getStudents() != null) { stringBuffer.append("\n[\n"); for (Student bean : studentObj.getStudents()) { studentToString(stringBuffer, bean); } stringBuffer.append("\n]\n"); } } } }
测试类:
package com.chen.seriaizable; public class Test { /** * @param args */ public static void main(String[] args) { SaveStudent saveStudent = new SaveStudent(); // 1 先执行写入文件 // saveStudent.writeStudent(); // 2 再读取 System.out.println(saveStudent); System.out.println("读完"); } }
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