java实现屏幕截屏功能

第一步：创建截屏工具类

 1 import java.awt.AWTException;
 2 import java.awt.Dimension;
 3 import java.awt.Rectangle;
 4 import java.awt.Robot;
 5 import java.awt.Toolkit;
 6 import java.awt.image.BufferedImage;
 7 import java.io.File;
 8 import java.io.IOException;
 9 import javax.imageio.ImageIO;
10 
11 /**
12  * 截屏工具类
13  * @author coil
14  *
15  */
16 public class CutPicUtil {
17 
18     /**
19      * 屏幕截图
20      * @param imageName 存储图片名称
21      * @param path 图片路径
22      * @param imgType 图片类型
23      * @throws AWTException
24      * @throws IOException
25      */
26     public static void cutPic(String imageName,String path,String imgType) throws AWTException, IOException{
27         Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();    
28         Rectangle screenRectangle = new Rectangle(screenSize);    
29         Robot robot = new Robot();    
30         BufferedImage image = robot.createScreenCapture(screenRectangle);    
31         ImageIO.write(image,imgType, new File(path+imageName+"."+imgType)); 
32     }
33     
34 }

CutPicUtil

第二步：在服务层调用截图工具类

 1 @Override
 2     public Map<String, Object> ScreenshotImg(String imageName, String basePath,String path,
 3             String imgType) {
 4         Map<String, Object> map = new HashMap<String, Object>();
 5         boolean flag = true;
 6         String name = DateUtil.getNowDate(6)+RandomUtil.getRandomString(8);
 7         try {
 8             CutPicUtil.cutPic(name, basePath+path,imgType);
 9         } catch (AWTException e) {
10             // TODO Auto-generated catch block
11             e.printStackTrace();
12             flag = false;
13         } catch (IOException e) {
14             // TODO Auto-generated catch block
15             e.printStackTrace();
16             flag = false;
17         }
18         if(flag){
19             map.put("state","0");//截屏成功
20             map.put("path",path+name+"."+imgType);
21         }else{
22             map.put("state","1");//截屏失败
23         }
24         return map;
25     }

ScreenshotImg

第三步：在控制层提供接口

 1 /**
 2      * 屏幕截图
 3      * @return
 4      */
 5     @RequestMapping(value="cutPic" ,method=RequestMethod.POST)
 6     @ResponseBody
 7     public Map<String, Object> cutPic(HttpServletRequest request){
 8         String imageName = DateUtil.getNowDate(6)+RandomUtil.getRandomString(6);
 9         String basePath = request.getRealPath("/");
10         String path = "/static/img/Screenshotimg/";
11         return iManageService.ScreenshotImg(imageName,basePath,path, "jpg");
12     }

cutPic

第四步：前台页面调用接口（这里使用原生js调用）

 1 <img id="jietu" width="300px" height="180px"></br>
 2     <button id="jt">截屏</button>
 3     <script type="text/javascript">
 4         $("#jt").click(function(){
 5             $.ajax({
 6                 url:"router/cutPic",
 7                 type:"post",
 8                 data:{},
 9                 success:function(data){
10                     if(data.state=="0"){
11                         alert("截屏成功");
12                         $("#jietu").attr("src","/wxactive"+data.path);
13                     }else{
14                         alert("截图失败");
15                     }
16                     window.clearInterval(timer);
17                     console.log(data);
18                 },
19                 error:function(e){
20                     alert("错误！！");
21                     window.clearInterval(timer);
22                 }
23             });        
24         });
25     </script>

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