SpringMVC读取本地图片(byte[]流方式)显示到前端页面

清疚 2021-06-10 20:41 731阅读 0赞

控制层：

package ywzn.by.scity.ctrl;
    
    import java.io.FileInputStream;
    import java.io.IOException;
    import java.io.OutputStream;
    
    import javax.annotation.Resource;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    import org.apache.log4j.Logger;
    import org.springframework.stereotype.Controller;
    import org.springframework.ui.Model;
    import org.springframework.web.bind.annotation.RequestMapping;
    import org.springframework.web.bind.annotation.ResponseBody;
    
    /**
     * 
     * @author YuanWang
     * 
     */
    @Controller
    @RequestMapping("/intelEx")
    public class YpIntelExCtrl {
    	
    	private Logger log = Logger.getLogger(this.getClass());
    
    	@RequestMapping(value = "/seekExperts")
    	@ResponseBody
    	public String createFolw(HttpServletRequest request,
    			HttpServletResponse response, Model model) {
    		// response.setContentType("image/*");
    		FileInputStream fis = null;
    		OutputStream os = null;
    		try {
    			fis = new FileInputStream("/home/hadoop/2015.jpg");
    			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();
    		}
    		try {
    			fis.close();
    			os.close();
    		} catch (IOException e) {
    			e.printStackTrace();
    		}
    		return "ok";
    	}
    }

JSP代码：  
<img src=“controller的请求路径” />

<!DOCTYPE html>
    <html>
    <head>
    <meta charset="UTF-8">
    <title>Insert title here</title>
    </head>
    <body>
    <img alt="image" src="../intelEx/seekExperts.do">
    </body>
    </html>

输入http://10.0.10.23:8080/scitydatacenter/test/getImage.html就可以看到下面的图片

![20150323142700513][]

[20150323142700513]: /images/20210522/5d3e7fc97cda4d079daf78f39a529668.png