锁定流程完成

yangys

2025-08-17 0ef4cc755bddd87799b8bfdd65c8123df6e149d0

 blade-service/blade-mdm/src/main/java/org/springblade/mdm/utils/FileContentUtil.java

@@ -1,12 +1,22 @@
package org.springblade.mdm.utils;

import org.apache.tika.Tika;
import org.apache.tika.config.TikaConfig;
import org.apache.tika.detect.CompositeDetector;
import org.apache.tika.detect.DefaultDetector;
import org.apache.tika.detect.Detector;
import org.apache.tika.detect.TextDetector;
import org.apache.tika.mime.MimeType;
import org.apache.tika.mime.MimeTypeException;
import org.apache.tika.mime.MimeTypes;
import org.mozilla.universalchardet.UniversalDetector;
import org.springblade.core.tool.utils.Charsets;

import java.io.*;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.util.ArrayList;
import java.util.List;

@@ -18,7 +28,9 @@
    * @return
    */
   public static boolean isTextFile(InputStream inputStream) {
      Tika tika = new Tika();
      MimeTypes mimeTypes = MimeTypes.getDefaultMimeTypes();
      Tika tika = new Tika(mimeTypes);

      try {
         String mimeType = tika.detect(inputStream);
         //String mimeType = tika.detect(file);
@@ -112,8 +124,13 @@
    * @throws IOException
    */
   public static String readLineAt(InputStream inputStream,int lineIndex) throws IOException {
      byte[] bytes = inputStream.readAllBytes();
      ByteArrayInputStream byteStream = new ByteArrayInputStream(bytes);
      Charset charset = Charsets.charset(detectFromInputStream(byteStream));
      byteStream.reset();//重置，使继续可用

      String lineText = "";
      try (BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream))) {
      try (BufferedReader reader = new BufferedReader(new InputStreamReader(byteStream,charset))) {
         // 跳过第一行
         int current = 0;
         while(current<=lineIndex && lineText!=null) {
@@ -138,4 +155,40 @@

      return new String(bytes, charset);
   }

   /**
    * 替换文件中的某一行
    * @param ins 输入流
    * @param repalceWith 替换后的文本
    * @param lineIndex 行索引 0 based
    */
    public static InputStream replaceAtLine(InputStream ins, int lineIndex,String repalceWith) throws IOException {
      byte[] bytes = ins.readAllBytes();
      ByteArrayInputStream byteStream = new ByteArrayInputStream(bytes);
      Charset charset = Charsets.charset(detectFromInputStream(byteStream));
      byteStream.reset();

      Path tempFile = Files.createTempFile("temppro"+System.currentTimeMillis(), ".tmp");

      try (InputStreamReader isr = new InputStreamReader(byteStream, charset);
          BufferedReader reader = new BufferedReader(isr);
          BufferedWriter writer = Files.newBufferedWriter(tempFile,charset)) {//

         int currentLine = 0;
         String line;

         while ((line = reader.readLine()) != null) {
            // 如果是目标行，写入新内容
            if (currentLine == lineIndex) {
               writer.write(repalceWith);
            } else {
               writer.write(line);
            }
            writer.newLine();
            currentLine++;
         }

      }
      return new ByteArrayInputStream(Files.newInputStream(tempFile).readAllBytes());
    }
}