javaweb页面上展示动态图片

Posted 2020-08-09

html

<img alt="点击设定" name="CONSTRUCTIONPLANHIS_IMAGE_curr_img_0" src="view/showImage/${image}">

 

JAVA

import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;

import javax.servlet.http.HttpServletResponse;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;

import com.ajz.util.FileUtil;

@Controller
@RequestMapping(value = "/view")
public class ImageViewController {

    @RequestMapping("showImage/{pic_name:.+}")
    public void showImage(HttpServletResponse response, @PathVariable String pic_name) {// pic_addr:图片路径(d:\\upload\a.jpg)
        response.setContentType("image/*");
        FileInputStream fis = null;
        OutputStream os = null;
        try {
            fis = new FileInputStream(FileUtil.getRealPath() + pic_name);
            os = response.getOutputStream();
            int count = 0;
            byte[] buffer = new byte[1024 * 8];
            while ((count = fis.read(buffer)) != -1) {
                os.write(buffer, 0, count);
                os.flush();
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                fis.close();
                os.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}