java中输出图片的代码
final ImageView iv=(ImageView)findViewById(R.id.iv);
Button bt=(Button)findViewById(R.id.bt);
bt.setOnClickListener(new View.OnClickListener(){
@Override
public void onClick(View p1)
{
// TODO: Implement this method
if(iv.getDrawable()!=null)
iv.setImageResource(R.id.photo);
else iv.setImageResource(0);
}
});
JAVA如何直接在console控制台上用IO流输出图片？急求！
解决方法：int len = fis.read(); read 方法加入参数bys，这样才能把fis的内容注入bys里面。
顺便说下，FileInputStream不能正确输出中文，因为这个是按字节输出的，每个中文站2个字节，会出现乱码。
请问下java中导出图片怎么做?
package com.xolt;
import java.io.FileOutputStream;
import java.io.File;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.awt.image.BufferedImage;
import javax.imageio.*;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFPatriarch;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;;
public class TestPOI {
public static void main(String[] args) {
FileOutputStream fileOut = null;
BufferedImage bufferImg =null;
BufferedImage bufferImg1 = null;
try{
//先把读进来的图片放到一个ByteArrayOutputStream中，以便产生ByteArray
ByteArrayOutputStream byteArrayOut = new ByteArrayOutputStream();
ByteArrayOutputStream byteArrayOut1 = new ByteArrayOutputStream();
bufferImg = ImageIO.read(new File(“C:/Documents and Settings/dingqi/Desktop/clip_image002.jpg”));
bufferImg1 = ImageIO.read(new File(“C:/Documents and Settings/dingqi/Desktop/clip_image002.jpg”));
ImageIO.write(bufferImg,”jpg”,byteArrayOut);
ImageIO.write(bufferImg1,”jpg”,byteArrayOut1);
//创建一个工作薄
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet1 = wb.createSheet(“poi picT”);
//HSSFRow row = sheet1.createRow(2);
HSSFPatriarch patriarch = sheet1.createDrawingPatriarch();
HSSFClientAnchor anchor = new HSSFClientAnchor(0,0,512,255,(short) 1,1,(short)10,20);
HSSFClientAnchor anchor1 = new HSSFClientAnchor(0,0,512,255,(short) 2,30,(short)10,60);
anchor1.setAnchorType(2);
//插入图片
patriarch.createPicture(anchor , wb.addPicture(byteArrayOut.toByteArray(),HSSFWorkbook.PICTURE_TYPE_JPEG));
patriarch.createPicture(anchor1 , wb.addPicture(byteArrayOut1.toByteArray(),HSSFWorkbook.PICTURE_TYPE_JPEG));
fileOut = new FileOutputStream(“c:/workbook.xls”);
//写入excel文件
wb.write(fileOut);
fileOut.close();
}catch(IOException io){
io.printStackTrace();
System.out.println(“io erorr : “+ io.getMessage());
} finally
{
if (fileOut != null)
{
try {
fileOut.close();
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
}
poi中图片到到excel的方法 你需要准备poi包 试试看看
java输入输出流处理图片怎么提取相片
这个简单 你可以先读 读完之后在写出来么
public class BinaryOperation {
public static void main(String args[]){
FileInputStream fis = null;
FileOutputStream fos = null;
try {
fis = new FileInputStream(“d:/图片/chenhl.jpg”);
byte[] b = new byte[128];
fos = new FileOutputStream(“d:/图片/chenhl 复件.jpg”);
while(fis.read(b)!=-1){
fos.write(b);
}
} catch (Exception e) {
e.printStackTrace();
}finally{
try{
if(fis!=null) fis.close();
if(fos!=null) fos.close();
}catch(Exception e){
e.printStackTrace();
}
}
}
}
如何实现java.awt.image.BufferedImage的逐点过滤，保存成内存图片输出？
try {
BufferedImage top = ImageIO.read(new File(“img/顶色.png”));
BufferedImage bot = ImageIO.read(new File(“img/底色.png”));
BufferedImage result = new BufferedImage(top.getWidth(),top.getHeight(),BufferedImage.TYPE_INT_ARGB);
for(int height = 0; heightbot.getHeight(); height++){
for(int width = 0; widthbot.getWidth(); width++){
result.setRGB(width, height, top.getRGB(width, height)|bot.getRGB(width, height));
}
}
ImageIO.write(result, “png”, new File(“img/result.png”));//write()函数将result对象中的内容保存到result.png图片中
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
目录结构
示例文件
java怎么在控制台输出一张jpg的图片
输出图片的base64编码
//imgFile是图片的路径
public static void getImageStr(String imgFile) {
InputStream inputStream = null;
byte[] data = null;
try {
inputStream = new FileInputStream(imgFile);
data = new byte[inputStream.available()];
inputStream.read(data);
inputStream.close();
} catch (IOException e) {
e.printStackTrace();
} // 加密
BASE64Encoder encoder = new BASE64Encoder();
System.out.println(encoder.encode(data));
}
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