http://blog.csdn.net/zgs_shmily/article/details/49562031

程式碼依賴於其他工具包，下載請移步：http://download.csdn.net/detail/zhaoguoshuai91/9231957

廢話不多說，直接上程式碼

1. publicclass ImageInfoUtil {  
2.     privatestatic Logger log = Logger.getLogger(ImageInfoUtil.class);  
3.     /** 
4.      * 獲取單張圖片的全量Info資訊 
5.      * @param imagePath  圖片的物理路徑
    
6.      */
7.     publicstatic  Map<String,String>  getImageInfo(String imagePath){  
8.         Map<String,String> imageInfo=new HashMap<String,String>();  
9.         try {  
10.             File jpegFile = new File(imagePath);  
11.             if(jpegFile.isFile()){//圖片必須是一個檔案
12.                 Metadata metadata = JpegMetadataReader.readMetadata(jpegFile);    
13.                  for(Directory exif:metadata.getDirectories()){  
14.                      Iterator tags= exif.getTags().iterator();  
15.                      while (tags.hasNext()) {    
16.                          Tag tag = (Tag)tags.next();   
17.                          log.debug("tag:<br/>");  
18.                          log.debug(tag);  
19.                          String key=tag.getTagName().trim().replace(" ","");  
20.                          String val=tag.getDescription().trim().replace(" ","");  
21.                          imageInfo.put(key, val);  
22.                      }    
23.                  }  
24.             }  
25.         } catch (Exception e) {  
26.             e.printStackTrace();  
27.         }  
28.         return imageInfo;  
29.     }  
30.     /** 
31.      * 獲取單張圖片指定Info型別的資訊 
32.      * @param imagePath 圖片的物理路徑 
33.      * @param direct    Info型別[eg:InfoSubIFDDirectory or PhotoshopDirectory] 
34.      */
35.     publicstatic  Map<String,String>  getImageInfo(String imagePath,Class<? extends Directory> direct){  
36.         Map<String,String> imageInfo=new HashMap<String,String>();  
37.         try {  
38.             File jpegFile = new File(imagePath);    
39.             if(jpegFile.isFile()){  
40.                 Metadata metadata = JpegMetadataReader.readMetadata(jpegFile);    
41.                 Directory exif=metadata.getFirstDirectoryOfType(direct);  
42.                 if(exif!=null){  
43.                     Iterator tags= exif.getTags().iterator();  
44.                     while (tags.hasNext()) {    
45.                         Tag tag = (Tag)tags.next();   
46.                         log.debug("tag:<br/>");  
47.                         log.debug(tag);  
48.                         String key=tag.getTagName().trim().replace(" ","");  
49.                         String val=tag.getDescription().trim().replace(" ","");  
50.                         imageInfo.put(key, val);  
51.                     }    
52.                 }  
53.             }  
54.         } catch (Exception e) {  
55.             e.printStackTrace();  
56.         }  
57.         return imageInfo;  
58.     }  
59.     /** 
60.      * 校驗圖片解析度 
61.      * @param imagePath    圖片的物理路徑 
62.      * @param imageHeight  圖片的高 
63.      * @param imageWidth   圖片的寬 
64.      */
65.     publicstaticboolean checkImageResolution(String imagePath,String imageHeight,String imageWidth){  
66.         Map<String,String> imageInfo=getImageInfo(imagePath);  
67.         String currentImageHeight=imageInfo.get("ImageHeight").replace("pixels","");  
68.         String currentImageWidth=imageInfo.get("ImageWidth").replace("pixels","");  
69.         log.debug("tag:currentImageWidth:"+currentImageWidth+","+"currentImageHeight:"+currentImageHeight);  
70.         if(imageHeight.equals(currentImageHeight)&&imageWidth.equals(currentImageWidth)){  
71.             returntrue;  
72.         }  
73.         returnfalse;  
74.     }  
75. }