解决网络图片不展示的问题

jshERP-boot/src/main/java/com/jsh/erp/utils/FileUtils.java

@@ -2,6 +2,8 @@ package com.jsh.erp.utils;
 
 import org.springframework.util.StringUtils;
 import java.io.*;
+import java.net.HttpURLConnection;
+import java.net.URL;
 import java.util.*;
 
 /**
@@ -352,4 +354,25 @@ public class FileUtils {
 		return fileName;
 	}
 
+	//将Url转换为File
+	public static File UrltoFile(String url) throws Exception {
+		HttpURLConnection httpUrl = (HttpURLConnection) new URL(url).openConnection();
+		httpUrl.connect();
+		InputStream ins=httpUrl.getInputStream();
+		File file = new File(System.getProperty("java.io.tmpdir") + File.separator + "xie");//System.getProperty("java.io.tmpdir")缓存
+		if (file.exists()) {
+			file.delete();//如果缓存中存在该文件就删除
+		}
+		OutputStream os = new FileOutputStream(file);
+		int bytesRead;
+		int len = 8192;
+		byte[] buffer = new byte[len];
+		while ((bytesRead = ins.read(buffer, 0, len)) != -1) {
+			os.write(buffer, 0, bytesRead);
+		}
+		os.close();
+		ins.close();
+		return file;
+
+	}
 }