java 截图程序

你把框以外的图片或图像的不透明度alpha值(0-127)设到大概50左右就暗了，而且会显出底下的内容。 框本身不透明度是0，就是完全透明。

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也就是Color(int r, int g, int b, int a) 最后一个a的值。

用JAVA怎么做截屏工具？

哎~要是你给我个分就好了!我前几天刚刚做的!你拿去吧!

/*

作者:泡沫

地址:

功能:用于截取图片,方便快捷!

mail:yuhuidog#163.com (注意:其中#为@)

*/

import java.awt.AWTException;

import java.awt.BorderLayout;

import java.awt.Button;

import java.awt.Color;

import java.awt.Cursor;

import java.awt.Dimension;

import java.awt.FileDialog;

import java.awt.Frame;

import java.awt.Graphics;

import java.awt.Image;

import java.awt.Panel;

import java.awt.Point;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import java.awt.event.MouseMotionListener;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

public class AWTpicture extends Frame implements MouseListener,MouseMotionListener,ActionListener{

private int firstX,firstY,frameWidth,frameHeight;

private int firstWith,firstHeight,firstPointx,firstPointy;

private BufferedImage bi,sbi,original;

private Robot robot;

private Rectangle rectangle;

private Rectangle rectangleCursor,rectangleCursorUp,rectangleCursorDown,rectangleCursorLeft,rectangleCursorRight;

private Rectangle rectangleCursorRU,rectangleCursorRD,rectangleCursorLU,rectangleCursorLD;

private Image bis;

private Dimension dimension;

private Button button,button2,clearButton;

private Point[] point=new Point[3];

private int width,height;

private int nPoints=5;

private Panel panel;

private boolean drawHasFinish=false,change=false;

private int changeFirstPointX,changeFirstPointY,changeWidth,changeHeight;

private boolean changeUP=false,changeDOWN=false,changeLEFT=false,changeRIGHT=false,changeRU=false,changeRD=false,changeLU=false,changeLD=false;

private boolean clearPicture=false,redraw=false;

private FileDialog fileDialog;

private AWTpicture(){

//取得屏幕大小

dimension=Toolkit.getDefaultToolkit().getScreenSize();

frameWidth=dimension.width;

frameHeight=dimension.height;

fileDialog=new FileDialog(this,"泡沫截图",FileDialog.SAVE);

rectangle=new Rectangle(frameWidth,frameHeight);

panel=new Panel();

button=new Button("退出");

button.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

button.setBackground(Color.green);

button2=new Button("截取");

button2.setBackground(Color.darkGray);

button2.addActionListener(new MyTakePicture(this));

button2.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

button.addActionListener(this);

clearButton=new Button("重绘");

clearButton.setBackground(Color.green);

clearButton.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));

clearButton.addActionListener(new MyClearPicture(this));

panel.setLayout(new BorderLayout());

panel.add(clearButton, BorderLayout.SOUTH);

panel.add(button, BorderLayout.NORTH);

panel.add(button2, BorderLayout.CENTER);

try {

robot=new Robot();

} catch (AWTException e) {

e.printStackTrace();

}

//截取全屏

bi=robot.createScreenCapture(rectangle);

original=bi;

this.setSize(frameWidth,frameHeight);

this.setUndecorated(true);

this.addMouseListener(this);

this.addMouseMotionListener(this);

this.add(panel,BorderLayout.EAST);

this.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));

this.setVisible(true);

this.repaint();

}

public static void main(String[] args){

new AWTpicture();

}

public void paint(Graphics g) {

this.drawR(g);

}

//缓存图片

public void update(Graphics g){

if(bis==null){

bis=this.createImage(frameWidth, frameHeight);

}

Graphics ga=bis.getGraphics();

Color c=ga.getColor();

ga.setColor(Color.black);

ga.fillRect(0, 0, frameWidth, frameHeight);

ga.setColor(c);

paint(ga);

g.drawImage(bis, 0, 0, frameWidth, frameHeight, null);

}

public void mouseClicked(MouseEvent e) {

}

public void mouseEntered(MouseEvent e) {

// TODO Auto-generated method stub

}

public void mouseExited(MouseEvent e) {

// TODO Auto-generated method stub

}

public void mousePressed(MouseEvent e) {

// TODO Auto-generated method stub

}

public void mouseReleased(MouseEvent e) {

if(!drawHasFinish){

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[1].x;

firstPointy=point[1].y;

}

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[2].x;

firstPointy=point[1].y;

}

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[1].x;

firstPointy=point[2].y;

}

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[2].x;

firstPointy=point[2].y;

}

changeFirstPointX=firstPointx;

changeFirstPointY=firstPointy;

if(point[1]!=null point[2]!=null ){

rectangleCursorUp=new Rectangle(firstPointx+20,firstPointy-10,width-40,20);

rectangleCursorDown=new Rectangle(firstPointx+20,firstPointy+height-10,width-40,20);

rectangleCursorLeft=new Rectangle(firstPointx-10,firstPointy+10,20,height-20);

rectangleCursorRight=new Rectangle(firstPointx+width-10,firstPointy+10,20,height-20);

rectangleCursorLU=new Rectangle(firstPointx-10,firstPointy-10,30,20);

rectangleCursorLD=new Rectangle(firstPointx-10,firstPointy+height-10,30,20);

rectangleCursorRU=new Rectangle(firstPointx+width-10,firstPointy-10,20,20);

rectangleCursorRD=new Rectangle(firstPointx+width-10,firstPointy+height-10,20,20);

drawHasFinish=true;

}

}

//确定每边能改变大小的矩形

if(drawHasFinish){

rectangleCursorUp=new Rectangle(changeFirstPointX+20,changeFirstPointY-10,changeWidth-40,20);

rectangleCursorDown=new Rectangle(changeFirstPointX+20,changeFirstPointY+changeHeight-10,changeWidth-40,20);

rectangleCursorLeft=new Rectangle(changeFirstPointX-10,changeFirstPointY+10,20,changeHeight-20);

rectangleCursorRight=new Rectangle(changeFirstPointX+changeWidth-10,changeFirstPointY+10,20,changeHeight-20);

rectangleCursorLU=new Rectangle(changeFirstPointX-2,changeFirstPointY-2,10,10);

rectangleCursorLD=new Rectangle(changeFirstPointX-2,changeFirstPointY+changeHeight-2,10,10);

rectangleCursorRU=new Rectangle(changeFirstPointX+changeWidth-2,changeFirstPointY-2,10,10);

rectangleCursorRD=new Rectangle(changeFirstPointX+changeWidth-2,changeFirstPointY+changeHeight-2,10,10);

}

}

public void mouseDragged(MouseEvent e) {

point[2]=e.getPoint();

//if(!drawHasFinish){

this.repaint();

// }

//托动鼠标移动大小

if(change){

if(changeUP){

changeHeight=changeHeight+changeFirstPointY-e.getPoint().y;

changeFirstPointY=e.getPoint().y;

}

if(changeDOWN){

changeHeight=e.getPoint().y-changeFirstPointY;

}

if(changeLEFT){

changeWidth=changeWidth+changeFirstPointX-e.getPoint().x;

changeFirstPointX=e.getPoint().x;

}

if(changeRIGHT){

changeWidth=e.getPoint().x-changeFirstPointX;

}

if(changeLU){

changeWidth=changeWidth+changeFirstPointX-e.getPoint().x;

changeHeight=changeHeight+changeFirstPointY-e.getPoint().y;

changeFirstPointX=e.getPoint().x;

changeFirstPointY=e.getPoint().y;

}

if(changeLD){

changeWidth=changeWidth+changeFirstPointX-e.getPoint().x;

changeHeight=e.getPoint().y-changeFirstPointY;

changeFirstPointX=e.getPoint().x;

}

if(changeRU){

changeWidth=e.getPoint().x-changeFirstPointX;

changeHeight=changeHeight+changeFirstPointY-e.getPoint().y;

changeFirstPointY=e.getPoint().y;

}

if(changeRD){

changeWidth=e.getPoint().x-changeFirstPointX;

changeHeight=e.getPoint().y-changeFirstPointY;

}

this.repaint();

}

}

public void mouseMoved(MouseEvent e) {

point[1]=e.getPoint();

//改变鼠标的形状

if(rectangleCursorUp!=null rectangleCursorUp.contains(point[1])){

this.setCursor(new Cursor(Cursor.N_RESIZE_CURSOR));

change=true;

changeUP=true;

}else if(rectangleCursorDown!=null rectangleCursorDown.contains(point[1])){

this.setCursor(new Cursor(Cursor.S_RESIZE_CURSOR));

change=true;

changeDOWN=true;

}else if(rectangleCursorLeft!=null rectangleCursorLeft.contains(point[1])){

this.setCursor(new Cursor(Cursor.W_RESIZE_CURSOR));

change=true;

changeLEFT=true;

}else if(rectangleCursorRight!=null rectangleCursorRight.contains(point[1]) ){

this.setCursor(new Cursor(Cursor.W_RESIZE_CURSOR));

change=true;

changeRIGHT=true;

}else if(rectangleCursorLU !=null rectangleCursorLU.contains(point[1])){

this.setCursor(new Cursor(Cursor.NW_RESIZE_CURSOR));

change=true;

changeLU=true;

}else if(rectangleCursorLD !=null rectangleCursorLD.contains(point[1])){

this.setCursor(new Cursor(Cursor.SW_RESIZE_CURSOR));

change=true;

changeLD=true;

}else if(rectangleCursorRU!=null rectangleCursorRU.contains(point[1])){

this.setCursor(new Cursor(Cursor.NE_RESIZE_CURSOR));

change=true;

changeRU=true;

}else if(rectangleCursorRD!=null rectangleCursorRD.contains(point[1])){

this.setCursor(new Cursor(Cursor.SE_RESIZE_CURSOR));

change=true;

changeRD=true;

}else{

this.setCursor(new Cursor(Cursor.CROSSHAIR_CURSOR));

changeUP=false;changeDOWN=false;changeRIGHT=false;changeLEFT=false;changeRU=false;

changeRD=false;changeLU=false;changeLD=false;

}

redraw=false;

}

@Override

public void actionPerformed(ActionEvent e) {

System.exit(0);

}

class MyTakePicture implements ActionListener{

AWTpicture aWTpicture;

MyTakePicture(AWTpicture aWTpicture){

this.aWTpicture=aWTpicture;

}

//保存图片

public void actionPerformed(ActionEvent e) {

fileDialog.setVisible(true);

if(changeWidth0){

sbi=bi.getSubimage(changeFirstPointX,changeFirstPointY,changeWidth,changeHeight);

File file=new File(fileDialog.getDirectory());

file.mkdir();

try {

ImageIO.write(sbi, "jpeg",new File(file,fileDialog.getFile()+".jpg") );

} catch (IOException e1) {

e1.printStackTrace();

}

}

}

}

class MyClearPicture implements ActionListener{

AWTpicture aWTpicture;

MyClearPicture(AWTpicture aWTpicture){

this.aWTpicture=aWTpicture;

}

public void actionPerformed(ActionEvent e) {

drawHasFinish=false;

change=false;

redraw=true;

rectangleCursorUp=null;

rectangleCursorDown=null;

rectangleCursorLeft=null;

rectangleCursorRight=null;

rectangleCursorRU=null;

rectangleCursorRD=null;

rectangleCursorLU=null;

rectangleCursorLD=null;

changeWidth=0;

changeHeight=0;

aWTpicture.repaint();

}

}

public void drawR(Graphics g){

g.drawImage(bi, 0,0,frameWidth,frameHeight, null);

if(point[1]!=null point[2]!=null !drawHasFinish !redraw){

int[] xPoints={point[1].x,point[2].x,point[2].x,point[1].x,point[1].x};

int[] yPoints={point[1].y,point[1].y,point[2].y,point[2].y,point[1].y};

width=(point[2].x-point[1].x)0?(point[2].x-point[1].x):(point[1].x-point[2].x);

height=(point[2].y-point[1].y)0?(point[2].y-point[1].y):(point[1].y-point[2].y);

changeWidth=width;

changeHeight=height;

Color c=g.getColor();

g.setColor(Color.red);

g.drawString(width+"*"+height, point[1].x, point[1].y-5);

//画点

/*int i;

if()*/

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[1].x;

firstPointy=point[1].y;

}

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[2].x;

firstPointy=point[1].y;

}

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[1].x;

firstPointy=point[2].y;

}

if(point[1].xpoint[2].x point[1].ypoint[2].y){

firstPointx=point[2].x;

firstPointy=point[2].y;

}

g.fillRect(firstPointx-2,firstPointy-2 , 5,5);

g.fillRect(firstPointx+(width)/2,firstPointy-2 , 5,5);

g.fillRect(firstPointx+width-2,firstPointy-2 , 5,5);

g.fillRect(firstPointx+width-2,firstPointy+ height/2-2, 5,5);

g.fillRect(firstPointx+width-2,firstPointy+height-2, 5,5);

g.fillRect(firstPointx+(width)/2,firstPointy+height-2, 5,5);

g.fillRect(firstPointx-2,firstPointy+height-2, 5,5);

g.fillRect(firstPointx-2,firstPointy+ height/2-2, 5,5);

//画矩形

//g.drawString("fafda", point[1].x-100, point[1].y-5);

g.drawPolyline(xPoints, yPoints, nPoints);

}

if(change){

g.setColor(Color.red);

g.drawString(changeWidth+"*"+changeHeight, changeFirstPointX, changeFirstPointY-5);

g.fillRect(changeFirstPointX-2,changeFirstPointY-2 , 5,5);

g.fillRect(changeFirstPointX+(changeWidth)/2,changeFirstPointY-2 , 5,5);

g.fillRect(changeFirstPointX+changeWidth-2,changeFirstPointY-2 , 5,5);

g.fillRect(changeFirstPointX+changeWidth-2,changeFirstPointY+ changeHeight/2-2, 5,5);

g.fillRect(changeFirstPointX+changeWidth-2,changeFirstPointY+changeHeight-2, 5,5);

g.fillRect(changeFirstPointX+(changeWidth)/2,changeFirstPointY+changeHeight-2, 5,5);

g.fillRect(changeFirstPointX-2,changeFirstPointY+changeHeight-2, 5,5);

g.fillRect(changeFirstPointX-2,changeFirstPointY+ changeHeight/2-2, 5,5);

g.drawRect(changeFirstPointX, changeFirstPointY, changeWidth, changeHeight);

}

}

}

java截取图片

呵呵,很明确的告诉你：可以！

代码半小时后出来！！！

……

终于出来了（呵呵，好像超过了半小时哈）且看代码：

import java.awt.Color;

import java.awt.Graphics;

import java.awt.image.BufferedImage;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

import javax.swing.JApplet;

public class Test extends JApplet{

String addrs="F:\\images\\mm.bmp";//改成自己的图片路径

BufferedImage mm,child;

CutImage ci;

public Test(){

try {

mm=ImageIO.read(new File(addrs));

} catch (IOException e) {

System.out.println("图片读取失败！");

e.printStackTrace();

}

ci=new CutImage(mm);

child=ci.getChildImage(50, 0, 150, 220);

}

public void init(){

}

public void paint(Graphics g){

g.setColor(Color.red);

g.drawString("原图：",0,10);

g.drawImage(mm, 20,10,this);

g.drawString("ci.getChildImage(50, 0, 150, 220)截取后的图片",mm.getWidth()+30,10);

g.drawImage(child, mm.getWidth()+50,20,this);

}

}

import java.awt.Image;

import java.awt.image.BufferedImage;

public class CutImage {

private BufferedImage img;

private BufferedImage child;

public CutImage(){

}

public CutImage(BufferedImage im){

img=im;

}

public CutImage(Image im){

img=(BufferedImage)im;

}

public void setImg(BufferedImage img) {

this.img = img;

}

public BufferedImage getChildImage(int x,int y,int width,int height) {

int cw=width;

int ch=height;

int pw=img.getWidth();

int ph=img.getHeight();

if(pwx+width){

System.out.println("给出的参数超出原图片的范围！程序会自动减小宽度或高度");

cw=pw-x;

}

if(phy+height){

System.out.println("给出的参数超出原图片的范围！程序会自动减小宽度或高度");

ch=ph-y;

}

child=new BufferedImage(cw,ch,BufferedImage.TYPE_INT_ARGB );

for(int i=0;ich;i++){

for(int j=0;jcw;j++){

child.setRGB(j, i, img.getRGB(x+j, y+i));

}

}

return child;

}

}

呵呵，希望楼主能够满意哦，如果你愿意的话，稍微改一下代码就可以把截取的图片child报春到你的电脑上了。下面程序的运行效果吧！

java 怎么实现网页截图

事实上，如果您想以Java实现网页截图，也就是“输入一段网址，几秒钟过后就能截取一张网页缩略图”的效果。那么，您至少有3种方式可以选择。

1、最直接的方式——使用Robot

方法详解：该方法利用Robat提供的强大桌面操作能力，硬性调用浏览器打开指定网页，并将网页信息保存到本地。

优势：简单易用，不需要任何第三方插件。

缺点：不能同时处理大量数据，技术含量过低，属于应急型技巧。

实现方法：使用如下代码即可。

[java] view plaincopy

public static void main(String[] args) throws MalformedURLException,  

IOException, URISyntaxException, AWTException {  

//此方法仅适用于JdK1.6及以上版本  

Desktop.getDesktop().browse(  

new URL("").toURI());  

Robot robot = new Robot();  

robot.delay(10000);  

Dimension d = new Dimension(Toolkit.getDefaultToolkit().getScreenSize());  

int width = (int) d.getWidth();  

int height = (int) d.getHeight();  

//最大化浏览器  

robot.keyRelease(KeyEvent.VK_F11);  

robot.delay(2000);  

Image image = robot.createScreenCapture(new Rectangle(0, 0, width,  

height));  

BufferedImage bi = new BufferedImage(width, height,  

BufferedImage.TYPE_INT_RGB);  

Graphics g = bi.createGraphics();  

g.drawImage(image, 0, 0, width, height, null);  

//保存图片  

ImageIO.write(bi, "jpg", new File("google.jpg"));  

}

2、最常规的方式——利用JNI，调用第三方C/C++组件

方法详解：目前来讲，Java领域对于网页截图组件的开发明显不足（商机？），当您需要完成此种操作时，算得上碰到了Java的软肋。但是，众所周知Java也拥有强大的JNI能力，可以轻易将C/C++开发的同类组件引为己用。不懂可以扣五七八零二四一四四

优势：实现简单，只需要封装对应的DLL文件，就可以让Java实现同类功能。

劣势：同其他JNI实现一样，在跨平台时存在隐患，而且您的程序将不再属于纯Java应用。

实现方法：可参见此用例，具体封装何种C/C++组件请自行选择。

PS：示例来源于ACA HTML to Image Converter项目（ ），这是一个收费的HTML转Image第三方组件，但封装方式在Java中大同小异。

引用JNI封装：

[java] view plaincopy

import sun.awt.*;  

import java.awt.*;  

import javax.swing.*;  

import java.awt.event.*;  

import java.awt.*;  

import java.awt.peer.*;  

public class Snap  

{  

static  

{  

System.loadLibrary("Snap");  

}  

public static void main( String[] argv )  

{  

Snap t_xSnap = new Snap();  

t_xSnap.Start("", "snapshot-google.png");  

}  

public native void Start(String pi_strURL, String pi_strImageName);  

}  

CPP部分的实现：

[java] view plaincopy

#include windows.h  

#include atlbase.h  

#include "snap.h"  

#pragma comment(lib,"atl.lib")  

#import "./../../acawebthumb.dll" no_namespace  

JNIEXPORT void JNICALL Java_Snap_Start(JNIEnv *pEnv, jobject, jstring pi_strUrl, jstring pi_strFileName)  

{  

CoInitialize(0);  

_bstr_t t_strUrl = pEnv-GetStringUTFChars(pi_strUrl, 0);  

_bstr_t t_strFileName = pEnv-GetStringUTFChars(pi_strFileName, 0);      

IThumbMakerPtr HTML_Converter = NULL;  

HRESULT hr = HTML_Converter.CreateInstance(L"ACAWebThumb.ThumbMaker");      

if (SUCCEEDED(hr))  

{   

HTML_Converter-SetURL(t_strUrl);  

if ( 0 == HTML_Converter-StartSnap() )  

HTML_Converter-SaveImage(t_strFileName);  

}  

if (HTML_Converter)  

HTML_Converter.Release();  

CoUninitialize();           

}

以该组件图像化yahoo界面的效果图：

3、最扎实的方法——自行解析HTML标记，并将其图像化

方法详解：众所周知，HTML之所以在浏览器中以具体的网页格式出现，并非服务器端传了一整个应用到客户端，而是源自于浏览器对于客户端自行解析的结果。因此，只要我们将对应的解析一一实现，那么将网页图形化，就将不是什么难事。

优势：纯Java实现，一劳永逸，一旦开发完成则永远通用，而且有一定的商用价值。

劣势：开发费时，且需要针对不同语法做精确分析，才能保证输出的基本正确。尤其在涉及到JavaScript解析时，难度将尤其增大。

实现方法：目前尚无具体案例可供参考。但是，由于Java有jdic之类的浏览器项目存在（），而Java图形界面又属绘制生成。从理论上说，我们可以将所有具备Graphics的组件图形化保存。

而如果自行解析，那么您需要建立HTML解析器（或使用第三方的，万幸Java在这方面的组件很多），了解Java2D机制，了解何时该使用drawString绘制文字，何时又该使用drawImage插入图片等等。

谢谢采纳！

Java如何实现截图功能

下面给你介绍将全屏幕截图保存到指定目录下的代码，希望能对你有帮助：

核心代码为：snapShot方法中的相关逻辑

package Jietu;

import java.awt.Dimension;

import java.awt.Rectangle;

import java.awt.Robot;

import java.awt.Toolkit;

import java.awt.image.BufferedImage;

import java.io.File;

import javax.imageio.ImageIO;

public class CameraTest {

private String filePreStr; // 默认前缀（选择存储路径例如： D：\\）

private String defName = "cameraImg"; // 默认截图名称

static int serialNum = 0; //截图名称后面的数字累加

private String imageFormat; // 图像文件的格式

private String defaultImageFormat = "png"; //截图后缀

Dimension d = Toolkit.getDefaultToolkit().getScreenSize(); //获取全屏幕的宽高尺寸等数据

public CameraTest() {

filePreStr = defName;

imageFormat = defaultImageFormat;

}

public CameraTest(String s, String format) {

filePreStr = s;

imageFormat = format;

}

public void snapShot() {

try {

// *** 核心代码 *** 拷贝屏幕到一个BufferedImage对象screenshot

BufferedImage screenshot = (new Robot()).createScreenCapture(new Rectangle(0, 0, (int) d.getWidth(), (int) d.getHeight()));

serialNum++;

// 根据文件前缀变量和文件格式变量，自动生成文件名

String name = filePreStr + String.valueOf(serialNum) + "." + imageFormat;

File f = new File(name);

System.out.print("Save File " + name);

// 将screenshot对象写入图像文件

ImageIO.write(screenshot, imageFormat, f);

System.out.print("..Finished!\n");

} catch (Exception ex) {

System.out.println(ex);

}

}

// 运行之后，即可将全屏幕截图保存到指定的目录下面br // 配合前端页面上面的选择尺寸等逻辑，传到后台，即可实现自由选择截图区域和大小的截图br

public static void main(String[] args) {

CameraTest cam = new CameraTest("d:\\Hello", "png");//

cam.snapShot();

}

}

如何用java代码获取 这个网页上的图片

你也没说是要把图片下载下来还是什么的

这里我实现的是将图片下载到电脑

import java.io.File;

import java.io.FileNotFoundException;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.net.HttpURLConnection;

import java.net.MalformedURLException;

import java.net.URL;

public class DownLoad {

public static void main(String[] args) {

File dstFile = new File("E:/test/test/test.jpg");

try {

URL url = new URL("");

HttpURLConnection conn = (HttpURLConnection) url.openConnection();

InputStream is = conn.getInputStream();

saveFile(is, dstFile);

} catch (MalformedURLException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}

}

public static void saveFile(InputStream is,File dstFile){

FileOutputStream fos = null;

File parentFile = dstFile.getParentFile();

if(!parentFile.exists()){

parentFile.mkdirs();

}

try {

fos = new FileOutputStream(dstFile);

byte[] buff = new byte[1024 * 4];

int len;

while((len = is.read(buff)) != -1){

fos.write(buff, 0, len);

}

} catch (FileNotFoundException e) {

e.printStackTrace();

} catch (IOException e) {

e.printStackTrace();

}finally{

try{

if(is != null){

is.close();

}

if(fos != null){

fos.close();

}

}catch(IOException e){

e.printStackTrace();

}

}

}

}

文章标题：图形截图java代码下载 图形截图java代码下载安装
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