IO流的文件写入与读取

package Login;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;

public class ObjectOutTest {
/* 将对象写入文件方法 */
public void write(Object o, String path) {
try {
/* 创建存取文件 */
FileOutputStream fileStream = new FileOutputStream(path);
/* 将存取文件写入对象 */
ObjectOutputStream os = new ObjectOutputStream(fileStream);
/* 写入对象 */
os.writeObject(o);
System.out.println("写入数据成功");
/* 关闭ObjectOutputStream */
os.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/* 将对象从文件中读出来 */
public void read(String path) {
try {
/* 连接到要读取的文件 */
FileInputStream fileStream = new FileInputStream(path);
/* 怎样读取连接到的文件 */
ObjectInputStream os = new ObjectInputStream(fileStream);
/* 读取对象 */
Dog dog = (Dog) os.readObject();
System.out.println("输出结果：" + dog.getName() + " is a "
+ dog.getSex() + ",高:" + dog.getHeight() + ",长:"
+ dog.getLength());
/* 关闭对象 */
os.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} catch (ClassNotFoundException e) {
e.printStackTrace();
}
}
/* 往文件写入字符串 */
public void wirteString(String path, String context) {
try {
/* 创建写入对象 */
FileWriter fileWriter = new FileWriter(path);
/* 创建缓冲区 */
BufferedWriter writer = new BufferedWriter(fileWriter);
/* 写入字符串 */
writer.write(context);
/* 关掉对象 */
writer.close();
System.out.println("写入字符串成功！");
} catch (IOException e) {
e.printStackTrace();
}
}
/* 读取文件中的字符串 */
public void readString(String path) {
try {
/* 创建读取对象 */
FileReader fileReader = new FileReader(path);
/* 创建缓存区 */
BufferedReader reader = new BufferedReader(fileReader);
/* 读取文件 */
String line = null;
while ((line = reader.readLine()) != null) {
System.out.println("读取成功：" + line);
}
/* 关闭对象 */
reader.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
/* 出函数入口 */
public static void main(String args[]) {
// Dog为外部类必须序列化才能实现它的对象的读取
Dog d = new Dog();
d.setHeight(12);
d.setLength(23);
d.setName("bobi");
d.setSex('b');
ObjectOutTest qqt = new ObjectOutTest();
qqt.wirteString("F:/IO/cc.sex", "chengchao 123456789");
qqt.readString("F:/IO/cc.sex");

}
}