SSH框架存储显示图片

最新推荐文章于 2021-04-05 17:36:27 发布

原创最新推荐文章于 2021-04-05 17:36:27 发布 · 1k 阅读

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1)上传图片upload_image.jsp页面

2）Struts.xml配置文件

<package name="image" extends="struts-default" namespace="/image">
        <action name="upload" class="com.zhongluo.zhaopinjiuye.action.company.UploadAction">
            <result name="preUpload">
                /upload_image.jsp
            </result>
            <result name="success">
                /show_image.jsp
            </result>
            <result name="error">
                /upload_image.jsp
            </result>
        </action>
     </package>

3）UploadAction.java代码

public class UploadAction extends BaseAction{
       int id;
       String url;
       private File some;
       private String someFileName;
       private String someContextType;
       private String imagePath;
       public String upload() throws Exception{
           if(some==null){
               return "error";
           }
           String imageName = "file_"+System.currentTimeMillis() +someFileName.substring(someFileName.lastIndexOf("."));
           imagePath = "upload/" + imageName;
           String realImagePath = ServletActionContext.getRequest().getRealPath(imagePath);
           boolean b = copy(some, new File(realImagePath));
           Image image = new Image();//数据库对应的bean，有主键id，String类型的url
           image.setImageurl(realImagePath);
           ImageService imageservice = (ImageService)getBeanFromCurrentContext("ImageService");
           setId(imageservice.save(image));
           setUrl(ServletActionContext.getRequest().getContextPath()+"/"+imagePath);
           if(!b){
               return "error";
           }
           return "success";
       }

        public static boolean copy(File src,File dest){
       InputStream bis = null;
       OutputStream bos = null;
       try{
           bis = new FileInputStream(src);
           bos = new FileOutputStream(dest);
           byte[] bts = new byte[1024];
           int len = -1;
           while((len=bis.read(bts))!=-1){
               bos.write(bts,0,len);
           }
           return true;
       }catch(Exception e){
           e.printStackTrace();
           return false;
       }finally{
           if(bis!=null){
               try{
                   bis.close();
               }catch(IOException e){
                   e.printStackTrace();
               }
           }
           if(bos!=null){
               try{
                   bos.close();
               }catch(IOException e){
                   e.printStackTrace();
               }
           }
       }
   }