* 修复临时目录被清理可能提示`NoSuchFileException`的异常

easyexcel-core/src/main/java/com/alibaba/excel/util/EasyExcelTempFileCreationStrategy.java

@@ -0,0 +1,136 @@
+/* ====================================================================
+   Licensed to the Apache Software Foundation (ASF) under one or more
+   contributor license agreements.  See the NOTICE file distributed with
+   this work for additional information regarding copyright ownership.
+   The ASF licenses this file to You under the Apache License, Version 2.0
+   (the "License"); you may not use this file except in compliance with
+   the License.  You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
+==================================================================== */
+
+package com.alibaba.excel.util;
+
+import java.io.File;
+import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
+import java.nio.file.attribute.FileAttribute;
+import java.util.concurrent.locks.Lock;
+import java.util.concurrent.locks.ReentrantLock;
+
+import org.apache.poi.util.DefaultTempFileCreationStrategy;
+import org.apache.poi.util.TempFileCreationStrategy;
+
+import static org.apache.poi.util.TempFile.JAVA_IO_TMPDIR;
+
+/**
+ * In the scenario where `poifiles` are cleaned up, the {@link DefaultTempFileCreationStrategy} will throw a
+ * java.nio.file.NoSuchFileException. Therefore, it is necessary to verify the existence of the temporary file every
+ * time it is created.
+ *
+ * @author Jiaju Zhuang
+ */
+public class EasyExcelTempFileCreationStrategy implements TempFileCreationStrategy {
+    /**
+     * Name of POI files directory in temporary directory.
+     */
+    public static final String POIFILES = "poifiles";
+
+    /**
+     * To use files.deleteOnExit after clean JVM exit, set the <code>-Dpoi.delete.tmp.files.on.exit</code> JVM property
+     */
+    public static final String DELETE_FILES_ON_EXIT = "poi.delete.tmp.files.on.exit";
+
+    /**
+     * The directory where the temporary files will be created (<code>null</code> to use the default directory).
+     */
+    private volatile File dir;
+
+    /**
+     * The lock to make dir initialized only once.
+     */
+    private final Lock dirLock = new ReentrantLock();
+
+    /**
+     * Creates the strategy so that it creates the temporary files in the default directory.
+     *
+     * @see File#createTempFile(String, String)
+     */
+    public EasyExcelTempFileCreationStrategy() {
+        this(null);
+    }
+
+    /**
+     * Creates the strategy allowing to set the
+     *
+     * @param dir The directory where the temporary files will be created (<code>null</code> to use the default
+     *            directory).
+     * @see Files#createTempFile(Path, String, String, FileAttribute[])
+     */
+    public EasyExcelTempFileCreationStrategy(File dir) {
+        this.dir = dir;
+    }
+
+    private void createPOIFilesDirectory() throws IOException {
+        // Create our temp dir only once by double-checked locking
+        // The directory is not deleted, even if it was created by this TempFileCreationStrategy
+        if (dir == null || !dir.exists()) {
+            dirLock.lock();
+            try {
+                if (dir == null || !dir.exists()) {
+                    String tmpDir = System.getProperty(JAVA_IO_TMPDIR);
+                    if (tmpDir == null) {
+                        throw new IOException("System's temporary directory not defined - set the -D" + JAVA_IO_TMPDIR
+                            + " jvm property!");
+                    }
+                    Path dirPath = Paths.get(tmpDir, POIFILES);
+                    dir = Files.createDirectories(dirPath).toFile();
+                }
+            } finally {
+                dirLock.unlock();
+            }
+            return;
+        }
+    }
+
+    @Override
+    public File createTempFile(String prefix, String suffix) throws IOException {
+        // Identify and create our temp dir, if needed
+        createPOIFilesDirectory();
+
+        // Generate a unique new filename
+        File newFile = Files.createTempFile(dir.toPath(), prefix, suffix).toFile();
+
+        // Set the delete on exit flag, but only when explicitly disabled
+        if (System.getProperty(DELETE_FILES_ON_EXIT) != null) {
+            newFile.deleteOnExit();
+        }
+
+        // All done
+        return newFile;
+    }
+
+    /* (non-JavaDoc) Created directory path is <JAVA_IO_TMPDIR>/poifiles/prefix0123456789 */
+    @Override
+    public File createTempDirectory(String prefix) throws IOException {
+        // Identify and create our temp dir, if needed
+        createPOIFilesDirectory();
+
+        // Generate a unique new filename
+        File newDirectory = Files.createTempDirectory(dir.toPath(), prefix).toFile();
+
+        //this method appears to be only used in tests, so it is probably ok to use deleteOnExit
+        newDirectory.deleteOnExit();
+
+        // All done
+        return newDirectory;
+    }
+}

easyexcel-core/src/main/java/com/alibaba/excel/util/FileUtils.java

@@ -12,7 +12,6 @@ import java.util.UUID;
 import com.alibaba.excel.exception.ExcelAnalysisException;
 import com.alibaba.excel.exception.ExcelCommonException;
 
-import org.apache.poi.util.DefaultTempFileCreationStrategy;
 import org.apache.poi.util.TempFile;
 
 /**
@@ -154,11 +153,8 @@ public class FileUtils {
         }
     }
 
-
     public static void createPoiFilesDirectory() {
-        File poiFilesPathFile = new File(poiFilesPath);
+        TempFile.setTempFileCreationStrategy(new EasyExcelTempFileCreationStrategy());
-        createDirectory(poiFilesPathFile);
-        TempFile.setTempFileCreationStrategy(new DefaultTempFileCreationStrategy(poiFilesPathFile));
     }
 
     public static File createCacheTmpFile() {
@@ -171,7 +167,6 @@ public class FileUtils {
     }
 
     /**
-     *
      * @param directory
      */
     public static File createDirectory(File directory) {

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/temp/WriteV33Test.java

@@ -1,5 +1,8 @@
 package com.alibaba.easyexcel.test.temp;
 
+import java.io.File;
+import java.nio.file.Files;
+import java.nio.file.Path;
 import java.util.ArrayList;
 import java.util.Date;
 import java.util.List;
@@ -135,4 +138,11 @@ public class WriteV33Test {
         return list;
     }
 
+
+    @Test
+    public void test4() throws Exception{
+       Path path= Files.createTempFile(new File("/Users/zhuangjiaju/test/test0422/test/xx").toPath(),System.currentTimeMillis()+"",".jpg");
+        System.out.println(path);
+    }
+
 }

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/temp/large/TempLargeDataTest.java

@@ -8,7 +8,6 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.stream.IntStream;
 
-import com.alibaba.easyexcel.test.core.large.LargeDataTest;
 import com.alibaba.easyexcel.test.util.TestFileUtil;
 import com.alibaba.excel.EasyExcel;
 import com.alibaba.excel.ExcelWriter;
@@ -31,7 +30,7 @@ import org.slf4j.LoggerFactory;
 
 public class TempLargeDataTest {
 
-    private static final Logger LOGGER = LoggerFactory.getLogger(LargeDataTest.class);
+    private static final Logger LOGGER = LoggerFactory.getLogger(TempLargeDataTest.class);
     private int i = 0;
 
     private static File fileFill07;

update.md

@@ -1,6 +1,7 @@
 # 4.0.1
 
 * `commons-io` 修改为依赖 `poi`的版本
+* 修复临时目录被清理可能提示`NoSuchFileException`的异常
 
 # 4.0.0