Java I/O流-ObjectInputStream、ObjectOutputStream
2013-09-02 18:56
246 查看
一、整体代码
ObjectStreamDemo.java
UserVo.java
二、解释
ObjectStreamDemo.java
import java.io.File; 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.Date; import java.util.List; public class ObjectStreamDemo { /** * 文件转化为Object * @param fileName * @return byte[] */ public static Object file2Object(String fileName) { FileInputStream fis = null; ObjectInputStream ois = null; try { fis = new FileInputStream(fileName); ois = new ObjectInputStream(fis); Object object = ois.readObject(); return object; } catch (Exception e) { e.printStackTrace(); } finally { if (fis != null) { try { fis.close(); } catch (IOException e1) { e1.printStackTrace(); } } if (ois != null) { try { ois.close(); } catch (IOException e2) { e2.printStackTrace(); } } } return null; } /** * 把Object输出到文件 * @param obj * @param outputFile */ public static void object2File(Object obj, String outputFile) { ObjectOutputStream oos = null; FileOutputStream fos = null; try { fos = new FileOutputStream(new File(outputFile)); oos = new ObjectOutputStream(fos); oos.writeObject(obj); } catch (Exception e) { e.printStackTrace(); } finally { if (oos != null) { try { oos.close(); } catch (IOException e1) { e1.printStackTrace(); } } if (fos != null) { try { fos.close(); } catch (IOException e2) { e2.printStackTrace(); } } } } /** * @param args */ public static void main(String[] args) { String fileName = "1.txt"; UserVo vo = new UserVo("michael", "大大", 18, new Date()); ObjectStreamDemo.object2File(vo, fileName); System.out.println("success write bean:UserVo to file."); UserVo tmpvo = (UserVo) ObjectStreamDemo.file2Object(fileName); System.out.println("read bean:UserVo from file get info : " + tmpvo); } }
UserVo.java
import java.io.Serializable; import java.util.Date; public class UserVo implements Serializable { /** * serialVersionUID */ private static final long serialVersionUID = -6846034858002233878L; private String userId; private String userName; private int age; private Date born; public UserVo() { } public UserVo(String userId, String userName, int age, Date born) { this.userId = userId; this.userName = userName; this.age = age; this.born = born; } /** * @return the userId */ public String getUserId() { return userId; } /** * @return the userName */ public String getUserName() { return userName; } /** * @return the age */ public int getAge() { return age; } /** * @return the born */ public Date getBorn() { return born; } /** * @param pUserId the userId to set */ public void setUserId(String pUserId) { userId = pUserId; } /** * @param pUserName the userName to set */ public void setUserName(String pUserName) { userName = pUserName; } /** * @param pAge the age to set */ public void setAge(int pAge) { age = pAge; } /** * @param pBorn the born to set */ public void setBorn(Date pBorn) { born = pBorn; } @Override public String toString() { return "userId=[ " + userId + " ] userName=[ " + userName + " ] age=[ " + age + " ] born=[ " + born + "] ."; } }
二、解释
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