添加根据哨卡ID获取哨卡小程序码的图片流的接口

esua-epdc/epdc-gateway/src/main/resources/application.yml

@@ -225,6 +225,7 @@ renren:
     - /heart/**
     - /oss/file/download
     - /ws/**
+    - /custom/epidemicSentryPost/downloadQRCode/**
   workLoginUrls:
     - /api/work/user/getToken #工作端-获取token
     - /api/work/user/login #工作端-登录

esua-epdc/epdc-module/epdc-custom/epdc-custom-server/src/main/java/com/elink/esua/epdc/modules/epidemic/controller/EpidemicSentryPostController.java

@@ -164,7 +164,7 @@ public class EpidemicSentryPostController {
     /**
      * 生成哨卡单个小程序码
      *
-     * @param [formDto]
+     * @param formDto
      * @return com.elink.esua.epdc.commons.tools.utils.Result
      * @author wangtong
      * @date 2020/2/14 17:46
@@ -177,7 +177,7 @@ public class EpidemicSentryPostController {
     /**
      * 生成哨卡多个小程序码
      *
-     * @param [formDto]
+     * @param formDto
      * @return com.elink.esua.epdc.commons.tools.utils.Result
      * @author wangtong
      * @date 2020/2/14 17:46
@@ -187,4 +187,16 @@ public class EpidemicSentryPostController {
         return this.epidemicSentryPostService.createPostsCodes(formDto);
     }
 
+    /**
+     * 下载小程序码
+     *
+     * @return com.elink.esua.epdc.commons.tools.utils.Result
+     * @author rongchao
+     * @date 2020/2/14 17:46
+     */
+    @GetMapping("downloadQRCode/{postId}")
+    public void downloadQRCode(@PathVariable("postId") String postId, HttpServletResponse response) {
+        epidemicSentryPostService.downloadQRCode(postId, response);
+    }
+
 }

esua-epdc/epdc-module/epdc-custom/epdc-custom-server/src/main/java/com/elink/esua/epdc/modules/epidemic/service/EpidemicSentryPostService.java

@@ -25,6 +25,7 @@ import com.elink.esua.epdc.dto.form.CreateCodeFormDTO;
 import com.elink.esua.epdc.modules.epidemic.entity.EpidemicSentryPostEntity;
 import org.springframework.web.multipart.MultipartFile;
 
+import javax.servlet.http.HttpServletResponse;
 import java.util.List;
 import java.util.Map;
 
@@ -163,4 +164,15 @@ public interface EpidemicSentryPostService extends BaseService<EpidemicSentryPos
      * @date 2020/2/16 17:03
      */
     EpidemicSentryPostDTO selectOneByThirdSentryPostid(String thirdSentryPostid);
+
+    /**
+     * 下载图片
+     *
+     * @param postId
+     * @param response
+     * @return com.elink.esua.epdc.dto.EpidemicSentryPostDTO
+     * @author rongchao
+     * @date 2020/2/16 17:03
+     */
+    void downloadQRCode(String postId, HttpServletResponse response);
 }

esua-epdc/epdc-module/epdc-custom/epdc-custom-server/src/main/java/com/elink/esua/epdc/modules/epidemic/service/impl/EpidemicSentryPostServiceImpl.java

@@ -47,9 +47,11 @@ import org.springframework.stereotype.Service;
 import org.springframework.transaction.annotation.Transactional;
 import org.springframework.web.multipart.MultipartFile;
 
-import java.io.ByteArrayOutputStream;
+import javax.servlet.http.HttpServletResponse;
-import java.io.File;
+import java.io.*;
-import java.io.FileInputStream;
+import java.net.MalformedURLException;
+import java.net.URL;
+import java.net.URLEncoder;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
@@ -147,6 +149,39 @@ public class EpidemicSentryPostServiceImpl extends BaseServiceImpl<EpidemicSentr
         return ConvertUtils.sourceToTarget(baseDao.selectOne(wrapper), EpidemicSentryPostDTO.class);
     }
 
+    @Override
+    public void downloadQRCode(String postId, HttpServletResponse response) {
+        EpidemicSentryPostDTO dto = selectOneByThirdSentryPostid(postId);
+        URL url;
+        try {
+            String fileUrl = dto.getMaCodeUrl();
+            url = new URL(fileUrl);
+
+            DataInputStream dataInputStream = new DataInputStream(url.openStream());
+            if (null != dataInputStream) {
+                response.setHeader("Cache-Control", "No-Cache");
+                response.setContentType("image/jpeg");
+
+                byte[] buf = new byte[1024];
+                int L;
+
+                OutputStream toClient = new BufferedOutputStream(response.getOutputStream());
+                while ((L = dataInputStream.read(buf)) != NumConstant.ONE_NEG) {
+                    toClient.write(buf, NumConstant.ZERO, L);
+                }
+                dataInputStream.close();
+                toClient.flush();
+                toClient.close();
+            }
+        } catch (MalformedURLException e) {
+            e.printStackTrace();
+        } catch (UnsupportedEncodingException e) {
+            e.printStackTrace();
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
     @Override
     public List<Map<String, String>> listSentryPostName() {
         return baseDao.selectListSentryPostName();