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java图片输出

发布时间: 2021-03-23 14:18:51

㈠ java如何输出jpeg图片

不可能直接输出。。你要专门用一个servlet把这个装图片的byte[] out.print（）然后再去<img>标签里引用这个地址

㈡ JAVA图片输出

等着拿分.......
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

/**
* @author alanwei
*
*/
public class Test {

public static BufferedImage createImage(int width, int height, String s) {
Font font = new Font("Serif", Font.BOLD, 10);
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = (Graphics2D)bi.getGraphics();
g2.setBackground(Color.WHITE);
g2.clearRect(0, 0, width, height);
g2.setPaint(Color.RED);

FontRenderContext context = g2.getFontRenderContext();
Rectangle2D bounds = font.getStringBounds(s, context);
double x = (width - bounds.getWidth()) / 2;
double y = (height - bounds.getHeight()) / 2;
double ascent = -bounds.getY();
double baseY = y + ascent;

g2.drawString(s, (int)x, (int)baseY);

return bi;
}

/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
BufferedImage image = createImage(100, 20, "123456789");

File file = new File("image.jpg");
if (!file.exists()) {
file.createNewFile();
}

if (image != null) {
ImageIO.write(image, "jpg", file);
}
}
}

㈢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

㈣ JAVA 输出图片代码

假如只在当前页面显示的话直接用 img src
在HTML（或者jsp)的body 里添加
<img src="test/1.jpg" />，
以上述例子说明，你现在所编辑的页面是index.jsp,那么test（文件夹）是跟此页面在同一目录中的，1.jpg是需要显示的图片，位置在test文件夹下。
总的意思是：文件夹与页面并列，图片在文件夹下。

㈤ java图片输出

等着拿分.......
import java.awt.Color;
import java.awt.Font;
import java.awt.Graphics2D;
import java.awt.event.ComponentAdapter;
import java.awt.event.ComponentEvent;
import java.awt.font.FontRenderContext;
import java.awt.geom.Rectangle2D;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

import javax.imageio.ImageIO;

/**
* @author alanwei
*
*/
public class Test {

public static BufferedImage createImage(int width, int height, String s) {
Font font = new Font("Serif", Font.BOLD, 10);
BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = (Graphics2D)bi.getGraphics();
g2.setBackground(Color.WHITE);
g2.clearRect(0, 0, width, height);
g2.setPaint(Color.RED);

g2.drawString(s, 0, 5 + height / 2);

return bi;
}

/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException {
BufferedImage image = createImage(100, 20, "123456789");

File file = new File("image.jpg");
if (!file.exists()) {
file.createNewFile();
}

if (image != null) {
ImageIO.write(image, "jpg", file);
}
}
}

㈥ 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();
}
}
}
}

㈦ java中输出图片的代码

final ImageView iv=(ImageView)findViewById(R.id.iv);
回 Button bt=(Button)findViewById(R.id.bt);
bt.setOnClickListener(new View.OnClickListener(){

@答Override
public void onClick(View p1)
{
// TODO: Implement this method
if(iv.getDrawable()!=null)
iv.setImageResource(R.id.photo);
else iv.setImageResource(0);
}
});

㈧ java怎么在控制台输出一张jpg的图片

输出图片的base64编码

//imgFile是图片的路版径
publicstaticvoidgetImageStr(StringimgFile){
InputStreaminputStream=null;
byte[]data=null;
try{
inputStream=newFileInputStream(imgFile);
data=newbyte[inputStream.available()];
inputStream.read(data);
inputStream.close();
}catch(IOExceptione){
e.printStackTrace();
}//加密权
BASE64Encoderencoder=newBASE64Encoder();
System.out.println(encoder.encode(data));
}

㈨ java输出图形

import java.util.Scanner;//导入输入功能
//Scanner

public class PrintMyNameAndShape//类名
{
public static void main(String[]args
{
Scanner s=new Scanner;//使用输入函数
System.out.println("-------------------------------");

System.out.println("姓名:xxx");
System.out.println("小组:第n小组");

System.out.println("-------------------------------");
System.out.println("尊敬的用户，请输入你需要的行数，谢谢");

int n=s.nextInt();
for(int i=1;i<=n;i++)
{
System.out.print("*");
}
for(int i=1;i<=n;i--)
{
System.out.print("*");
}

}

}

㈩ java输出图形

public static void main(String[] args) {
版int n=10; //可以通过调整n值，调整输出菱形的大小。n=行数权+1
for(int i=1;i<n;i++){
for(int j=1;j<=(i<n/2?n/2-i:i-n/2);j++){
System.out.print(" ");
}
for(int j=1;j<(i<n/2?2*i:2*(n-i));j++){
System.out.print("*");
}
for(int j=1;j<=(i<n/2?n/2-i:i-n/2);j++){
System.out.print(" ");
}
System.out.println();
}
}

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java图片输出

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