update QRCode

src/main/java/com/lovenav/service/serviceImpl/QRCServiceImpl.java

@@ -24,9 +24,9 @@ public class QRCServiceImpl implements QRCService{
     public String QR(CollectIconList collect) throws Exception {
         String logoPath ="src/main/resources/static/logo/NAV.png";
         String destPath = "src/main/resources/static/qr";
-        String savePath = "src/main/resources/static/icon";
+
 //        将icon下载到本地并存储本地路径
-        String icon_url = QRCodeUtil.downloadPicture(collect.getIcon_url(),savePath);
+        String icon_url = QRCodeUtil.downloadPicture(collect.getIcon_url());
         collect.setIcon_url(icon_url);
 //        通过传入collect的url_id查找相同网址图片列表
 //        List<CollectIconList> collectIconList = collectIconListDao.selectByUrlid(collect.getUrl_id());

src/main/java/com/lovenav/utils/QRCodeUtil.java

@@ -18,11 +18,8 @@ import java.awt.image.BufferedImage;
 import java.io.*;
 import java.net.HttpURLConnection;
 import java.net.URL;
-import java.util.HashMap;
+import java.text.SimpleDateFormat;
-import java.util.Hashtable;
+import java.util.*;
-import java.util.Map;
-import java.util.Random;
-import java.util.Base64;
 
 @Component
 @Service
@@ -386,44 +383,52 @@ public class QRCodeUtil {
 
     /**
      * 根据图片url下载图片到本地
-     * @param imageUrl
-     * @param savePath
-     * @throws IOException
      */
-    public static String downloadPicture(String imageUrl, String savePath) throws IOException {
+
-        URL url = new URL(imageUrl);
+    public static String downloadPicture(String pictureurl) throws Exception {
+        //因为是测试，图片url可以随便搞一个，我从百度随便复制了个图片url
+        String pictureUrl = pictureurl;
+        //建立图片连接
+        URL url = new URL(pictureUrl);
         HttpURLConnection connection = (HttpURLConnection)url.openConnection();
+        //设置请求方式
         connection.setRequestMethod("GET");
-        connection.connect();
+        //设置超时时间
+        connection.setConnectTimeout(10*1000);
 
-        int responseCode = connection.getResponseCode();
+        //输入流
-        if (responseCode == HttpURLConnection.HTTP_OK) {
+        InputStream stream = connection.getInputStream();
-            BufferedInputStream in = new BufferedInputStream(connection.getInputStream());
+        int len = 0;
-            FileOutputStream out = new FileOutputStream(new File(savePath));
+        byte[] test = new byte[1024];
 
-            byte[] buffer = new byte[1024];
-            int bytesRead;
-            while ((bytesRead = in.read(buffer)) != -1) {
-                out.write(buffer, 0, bytesRead);
-            }
-//            能够返回本地地址前提
-            URL url2 = new URL(imageUrl);
-            BufferedImage image = ImageIO.read(url2);
-            String file = new Random().nextInt(99999999)+".jpg";
-            ImageIO.write(image, FORMAT_NAME, new File(savePath+"/"+file));
 
-//            下载完成，关闭输入输出流
+        //获取项目路径
-            in.close();
+        File directory = new File("src/main/resources/static/icon");
-            out.close();
+        String paths = directory.getCanonicalPath();
-            connection.disconnect();
+        //如果没有文件夹则创建
-            System.out.println("图片下载成功，保存路径：" + savePath);
+        File file = new File("src/main/resources/static/icon");
-//            返回本地地址
+        if (!file.exists()){
-            return savePath+"/"+file;
+            file.mkdirs();
         }
-        else {
+
-            System.out.println("无法下载图片，响应码：" + responseCode);
+        //设置图片名称，这个随意
-            return JSON.toJSONString("responseCode");
+        String date = new Random().nextInt(99999999)+".jpg";
+        String fileName = date ;
+
+        //输出流，图片输出的目的文件
+        String serverPath = "src/main/resources/static/icon";
+        BufferedOutputStream fos = new BufferedOutputStream(new FileOutputStream(serverPath +"/" + fileName));
+
+        //以流的方式上传
+        while ((len =stream.read(test)) !=-1){
+            fos.write(test,0,len);
         }
+
+
+        //记得关闭流，不然消耗资源
+        stream.close();
+        fos.close();
+        return (serverPath +"/" + fileName);
     }
 
     public static void main(String[] args) throws Exception {

src/main/resources/application.yml

@@ -1,4 +1,6 @@
 spring:
+  mvc:
+    static-path-pattern: /static/**
   datasource:
     url: jdbc:mysql://localhost:3306/love-nav
     username: root