Io 流向文件中写入图片

import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
@SuppressWarnings("all")
public class ReadAndWriteBinaryImageDemo {
	public static void main(String[] args){
		FileInputStream fis = null;//创建文件读入流
		DataInputStream dis = null;//创建二进制读入流
		FileOutputStream fos = null;//创建文件输出流
		DataOutputStream dos = null;//创建二进制输出流
		try {
			//创建读入流对象
			fis = new FileInputStream("D:/2.jpg");
			//将对象转化为二进制
			dis = new DataInputStream(fis);
			//创建输出流对象
			fos = new FileOutputStream("D:/test/sa.bmp");
			//将输出流对象转化为二进制
			dos = new DataOutputStream(fos);
			int temp;
			try {
				temp = fis.read();
				while(temp != -1) {
					dos.write(temp);
					temp = fis.read();
				}
				System.out.println("图片写入成功!");
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
			
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {//关闭流,释放资源
			try {
				if(fis != null)
				    fis.close();
				if(dis != null)
					dis.close();
				if(fos != null)
					fos.close();
				if(dos != null)
					dos.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}

}

 

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