모델관리수정, chunk샘플페이지수정

src/main/java/com/kamco/cd/kamcoback/common/utils/FIleChecker.java

@@ -5,6 +5,8 @@ import static java.lang.String.CASE_INSENSITIVE_ORDER;
 import io.swagger.v3.oas.annotations.media.Schema;
 import java.io.BufferedReader;
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
 import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStream;
@@ -31,6 +33,8 @@ import org.geotools.coverage.grid.GridCoverage2D;
 import org.geotools.gce.geotiff.GeoTiffReader;
 import org.springframework.util.FileSystemUtils;
 import org.springframework.web.multipart.MultipartFile;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipInputStream;
 
 public class FIleChecker {
 
@@ -517,6 +521,65 @@ public class FIleChecker {
     return true;
   }
 
+
+  public static void unzip(String fileName, String destDirectory ) throws IOException {
+    File destDir = new File(destDirectory);
+    if (!destDir.exists()) {
+      destDir.mkdirs(); // 대상 폴더가 없으면 생성
+    }
+
+    String zipFilePath = destDirectory+"/"+fileName;
+
+    try (ZipInputStream zis = new ZipInputStream(new FileInputStream(zipFilePath))) {
+      ZipEntry zipEntry = zis.getNextEntry();
+
+      while (zipEntry != null) {
+        File newFile = newFile(destDir, zipEntry);
+
+        if (zipEntry.isDirectory()) {
+          if (!newFile.isDirectory() && !newFile.mkdirs()) {
+            throw new IOException("디렉토리 생성 실패: " + newFile);
+          }
+
+        } else {
+
+          // 상위 디렉토리가 없는 경우 생성
+          File parent = newFile.getParentFile();
+          if (!parent.exists() && !parent.mkdirs()) {
+            throw new IOException("상위 디렉토리 생성 실패: " + parent);
+          }
+
+          // 실제 파일 쓰기
+          try (FileOutputStream fos = new FileOutputStream(newFile)) {
+            byte[] buffer = new byte[1024];
+            int len;
+            while ((len = zis.read(buffer)) > 0) {
+              fos.write(buffer, 0, len);
+            }
+          }
+        }
+        zipEntry = zis.getNextEntry();
+      }
+      zis.closeEntry();
+    }
+  }
+
+
+  public static File newFile(File destinationDir, ZipEntry zipEntry) throws IOException {
+    File destFile = new File(destinationDir, zipEntry.getName());
+
+    String destDirPath = destinationDir.getCanonicalPath();
+    String destFilePath = destFile.getCanonicalPath();
+
+    if (!destFilePath.startsWith(destDirPath + File.separator)) {
+      throw new IOException("엔트리가 대상 디렉토리를 벗어남: " + zipEntry.getName());
+    }
+
+    return destFile;
+  }
+
+
+
   public static boolean checkExtensions(String fileName, String ext) {
     if (fileName == null) return false;