生成二维码类

src/main/java/com/zzjee/wm/controller/WmOmNoticeHController.java

@@ -5,6 +5,8 @@ import com.zzjee.wm.entity.*;
 import com.zzjee.wm.page.*;
 import com.zzjee.wm.service.WmOmNoticeHServiceI;
 
+import java.io.*;
+import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.Calendar;
 import java.util.Date;
@@ -69,9 +71,6 @@ import org.springframework.web.multipart.MultipartFile;
 import org.springframework.web.multipart.MultipartHttpServletRequest;
 
 import java.awt.image.BufferedImage;
-import java.io.ByteArrayOutputStream;
-import java.io.IOException;
-import java.io.OutputStream;
 import java.util.Map;
 
 import org.springframework.http.ResponseEntity;
@@ -2006,6 +2005,74 @@ public class WmOmNoticeHController extends BaseController {
 		req.setAttribute("controller_name", "wmOmNoticeHController");
 		return new ModelAndView("common/upload/pub_excel_upload2");
 	}
+
+
+	/**
+	 * 获取图片流/获取文件用于下载
+	 * @param response
+	 * @param request
+	 * @throws Exception
+	 * http://localhost:8080/zzjee/wmOmNoticeHController/showOrDownqrcodeByurl.do?&qrvalue=1111223333  调用
+	 */
+	@RequestMapping(value="showOrDownqrcodeByurl",method = RequestMethod.GET)
+	public void getQrImgByurl(HttpServletResponse response, HttpServletRequest request) throws Exception{
+		request.setCharacterEncoding("UTF-8");
+		String flag=request.getParameter("down");//是否下载否则展示图片
+
+		String qrvalue = request.getParameter("qrvalue");
+		String dbpath = qrvalue+".jpg";
+		String localPath=ResourceUtil.getConfigByName("webUploadpath");
+
+		try{
+			String imgurl = localPath+File.separator+dbpath;
+			QRcodeUtil.encode(qrvalue,imgurl);
+		}catch (Exception e){
+
+		}
+		if("1".equals(flag)){
+			response.setContentType("application/x-msdownload;charset=utf-8");
+			String fileName=dbpath.substring(dbpath.lastIndexOf(File.separator)+1);
+
+			String userAgent = request.getHeader("user-agent").toLowerCase();
+			if (userAgent.contains("msie") || userAgent.contains("like gecko") ) {
+				fileName = URLEncoder.encode(fileName, "UTF-8");
+			}else {
+				fileName = new String(fileName.getBytes("UTF-8"), "iso-8859-1");
+			}
+			response.setHeader("Content-disposition", "attachment; filename="+ fileName);
+
+		}else{
+			response.setContentType("image/jpeg;charset=utf-8");
+		}
+
+		InputStream inputStream = null;
+		OutputStream outputStream=null;
+		try {
+			String imgurl = localPath+File.separator+dbpath;
+			inputStream = new BufferedInputStream(new FileInputStream(imgurl));
+			outputStream = response.getOutputStream();
+			byte[] buf = new byte[1024];
+			int len;
+			while ((len = inputStream.read(buf)) > 0) {
+				outputStream.write(buf, 0, len);
+			}
+			response.flushBuffer();
+		} catch (Exception e) {
+
+		}finally{
+			if(inputStream!=null){
+				inputStream.close();
+			}
+			if(outputStream!=null){
+				outputStream.close();
+			}
+		}
+	}
+
+
+
+
+
 	@RequestMapping(method = RequestMethod.GET)
 	@ResponseBody
 	public List<WmOmNoticeHEntity> list() {