直接上代碼好不好

方法名:

GenerateImage
傳參:

base64Img:上傳的base64碼

realPath:生成的圖片路徑　

imgTypes :圖片類型

String imgBase64 = request.getParameter("userImgbase64");
// 獲取當前服務器路徑
 String realPath = request.getServletContext().getRealPath("")+"\\img"; 
System.out.println(realPath );   //　　http://192.168.191.1:8080/MyWeb/img

String[] imgType = imgBase64.split(",");

// 獲取圖片類型(如果沒有類型,貌似會報錯)
String imgTypes = imgType[0].toString().substring(11, imgType[0].toString().length()-7);

String userImgbase64 = GenerateImage(imgBase64,realPath,imgTypes);

System.out.println(realPath );   //　　http://192.168.191.1:8080/MyWeb/img/1532493648717.png

//對字節數組字符串進行Base64解碼並生成圖片
     public static
 
 String GenerateImage(String base64Img,String realPath,String imgTypes ){  
         String ret_fileName = null;
         // 臨時文件路徑              
         File file_normer = new File(realPath+"/");  
         if (!file_normer.exists()) {  
             file_normer.mkdirs();  
         }  
          if (base64Img == null
 
) // 圖像數據為空    
                 return "圖像數據為空";    
          base64Img = base64Img.replaceAll("data:image/"+imgTypes+";base64,", "");    
             BASE64Decoder decoder = new BASE64Decoder();    
             try {    
                 // Base64解碼    
                 byte[] b = decoder.decodeBuffer(base64Img);    
                 for (int i = 0; i < b.length; ++i) {    
                     if (b[i] < 0) {// 調整異常數據    
                         b[i] += 256;    
                     }    
                 }    
                 // 生成jpeg圖片       
                 ret_fileName = System.currentTimeMillis()+"."+imgTypes+"";
                 File file = new File(realPath + "/" + ret_fileName );  
                 OutputStream out = new FileOutputStream(file);    
                 out.write(b);    
                 out.flush();    
                 out.close();    
             } catch (Exception e) {    
                 e.printStackTrace();    
             }    
             return ret_fileName ;   
            
        }

java上傳不同類型圖片,保存數據庫(Base64位圖轉網絡圖片)