运单协议问题问题修改-7 20230731

src/main/java/com/jkcredit/invoice/util/FileBase64Util.java

@@ -0,0 +1,150 @@
+package com.jkcredit.invoice.util;
+
+import cn.hutool.json.JSONObject;
+import cn.hutool.json.JSONUtil;
+import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.io.FileUtils;
+import org.apache.commons.lang3.StringUtils;
+
+import java.io.*;
+import java.net.URL;
+import java.nio.charset.StandardCharsets;
+import java.util.Base64;
+
+/**
+ * @author lihua@kuaihuoyun.com
+ * @version 2.2.0
+ * @date 2023/8/2
+ */
+@Slf4j
+public class FileBase64Util {
+
+    private static final Base64.Decoder DECODER_64 = Base64.getDecoder();
+    private static final Base64.Encoder ENCODER_64 = Base64.getEncoder();
+
+    public static String fileUrlToBase64Str(String url, String fileName){
+        if(StringUtils.isEmpty(url)){
+            return null;
+        }
+        String savePathName = System.getProperty("user.home") + File.separator + fileName;
+        File file = new File(savePathName);
+        try{
+            FileUtils.copyURLToFile(new URL(url), file);
+        }catch (IOException e){
+            log.error("JiaoKe, fileUrlToBase64Str error, message:{}", e.getMessage());
+        }
+        String base64Str = fileToBase64Str(file);
+        //file.deleteOnExit();
+        return base64Str;
+    }
+
+    public static String getFileName(String url, String num){
+        if(StringUtils.isEmpty(url)){
+            return null;
+        }
+        return num + getFileExt(url);
+    }
+
+    private static String getFileExt(String url){
+        return url.substring(url.lastIndexOf("."));
+    }
+
+
+    public static String fileToBase64Str(File file) {
+        String base64Str = null;
+        FileInputStream fin = null;
+        BufferedInputStream bin = null;
+        ByteArrayOutputStream baos = null;
+        BufferedOutputStream bout = null;
+        try {
+            fin = new FileInputStream(file);
+            bin = new BufferedInputStream(fin);
+            baos = new ByteArrayOutputStream();
+            bout = new BufferedOutputStream(baos);
+            // io
+            byte[] buffer = new byte[1024];
+            int len = bin.read(buffer);
+            while (len != -1) {
+                bout.write(buffer, 0, len);
+                len = bin.read(buffer);
+            }
+            // 刷新此输出流，强制写出所有缓冲的输出字节
+            bout.flush();
+            byte[] bytes = baos.toByteArray();
+            // Base64字符编码
+            base64Str = ENCODER_64.encodeToString(bytes).trim();
+        } catch (IOException e) {
+            log.error("JiaoKe fileToBase64Str error, message:{}", e.getMessage());
+        } finally {
+            try {
+                if(fin != null){
+                    fin.close();
+                }
+                if(bin != null){
+                    bin.close();
+                }
+                if(bout != null){
+                    bout.close();
+                }
+            } catch (IOException e) {
+                e.getMessage();
+            }
+        }
+        return base64Str;
+    }
+
+    public static void base64ContentToFile(String base64Content, String filePath) throws IOException {
+        BufferedInputStream bis = null;
+        FileOutputStream fos = null;
+        BufferedOutputStream bos = null;
+        try {
+            // 将空格替换为+
+            base64Content = base64Content.replaceAll(" ", "+");
+            // Base64解码到字符数组
+            byte[] bytes = DECODER_64.decode(base64Content);
+            ByteArrayInputStream byteInputStream = new ByteArrayInputStream(bytes);
+            bis = new BufferedInputStream(byteInputStream);
+            File file = new File(filePath);
+            File path = file.getParentFile();
+            if (!path.exists()) {
+                path.mkdirs();
+            }
+            fos = new FileOutputStream(file);
+            bos = new BufferedOutputStream(fos);
+            // io
+            byte[] buffer = new byte[1024];
+            int length = bis.read(buffer);
+            while (length != -1) {
+                bos.write(buffer, 0, length);
+                length = bis.read(buffer);
+            }
+            // 刷新此输出流，强制写出所有缓冲的输出字节
+            bos.flush();
+        } catch (IOException e) {
+            e.getMessage();
+        } finally {
+            try {
+                bis.close();
+                fos.close();
+                bos.close();
+            } catch (IOException e) {
+                e.getMessage();
+            }
+        }
+    }
+
+    public static void main(String[] args)throws Exception {
+        String url = "http://wlhyos-prod.oss-cn-hangzhou.aliyuncs.com/537d0dc6-fb87-45a5-8cc7-b0a352eb31f4.pdf";
+
+        System.out.println(fileUrlToBase64Str(url, "f4.pdf"));
+
+        String basePath = System.getProperty("user.home") + "/temp/";
+        String filePath =  basePath + "02.txt";
+        JSONObject jsonObject = JSONUtil.readJSONObject(new File(filePath), StandardCharsets.UTF_8);
+
+        String base64Str = jsonObject.getStr("base64Str");
+        base64ContentToFile(base64Str, basePath + "002.pdf");
+        System.out.println("over");
+    }
+
+}