* 在临时文件被删除的情况下能正常的读取 [Issue #2693](https://github.com/alibaba/easyexcel/issues/2693)

easyexcel-core/src/main/java/com/alibaba/excel/cache/Ehcache.java

@@ -2,6 +2,7 @@ package com.alibaba.excel.cache;
 
 import java.io.File;
 import java.util.ArrayList;
+import java.util.Optional;
 import java.util.UUID;
 
 import com.alibaba.excel.context.AnalysisContext;
@@ -79,7 +80,8 @@ public class Ehcache implements ReadCache {
     static {
         CACHE_PATH_FILE = FileUtils.createCacheTmpFile();
         FILE_CACHE_MANAGER =
-            CacheManagerBuilder.newCacheManagerBuilder().with(CacheManagerBuilder.persistence(CACHE_PATH_FILE)).build(true);
+            CacheManagerBuilder.newCacheManagerBuilder().with(CacheManagerBuilder.persistence(CACHE_PATH_FILE)).build(
+                true);
         ACTIVE_CACHE_MANAGER = CacheManagerBuilder.newCacheManagerBuilder().build(true);
         FILE_CACHE_CONFIGURATION = CacheConfigurationBuilder
             .newCacheConfigurationBuilder(Integer.class, ArrayList.class, ResourcePoolsBuilder.newResourcePoolsBuilder()
@@ -92,13 +94,16 @@ public class Ehcache implements ReadCache {
         try {
             fileCache = FILE_CACHE_MANAGER.createCache(cacheAlias, FILE_CACHE_CONFIGURATION);
         } catch (IllegalStateException e) {
-            //fix Issue #2693,重建缓存文件夹
+            //fix Issue #2693,Temporary files may be deleted if there is no operation for a long time, so they need
+            // to be recreated.
             if (CACHE_PATH_FILE.exists()) {
                 throw e;
             }
             synchronized (Ehcache.class) {
-                if (!CACHE_PATH_FILE.exists()){
-                    log.debug("cache file dir is not exist retry create");
+                if (!CACHE_PATH_FILE.exists()) {
+                    if (log.isDebugEnabled()) {
+                        log.debug("cache file dir is not exist retry create");
+                    }
                     FileUtils.createDirectory(CACHE_PATH_FILE);
                 }
             }

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/core/compatibility/CompatibilityTest.java

@@ -1,16 +1,24 @@
 package com.alibaba.easyexcel.test.core.compatibility;
 
+import java.io.File;
 import java.math.BigDecimal;
+import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
+import com.alibaba.easyexcel.test.core.large.LargeData;
+import com.alibaba.easyexcel.test.core.large.LargeDataListener;
+import com.alibaba.easyexcel.test.core.simple.SimpleData;
 import com.alibaba.easyexcel.test.util.TestFileUtil;
 import com.alibaba.excel.EasyExcel;
+import com.alibaba.excel.cache.Ehcache;
 import com.alibaba.excel.constant.EasyExcelConstants;
 import com.alibaba.excel.enums.ReadDefaultReturnEnum;
+import com.alibaba.excel.util.FileUtils;
 import com.alibaba.fastjson.JSON;
 
 import lombok.extern.slf4j.Slf4j;
+import org.apache.poi.util.TempFile;
 import org.junit.Assert;
 import org.junit.FixMethodOrder;
 import org.junit.Test;
@@ -116,4 +124,37 @@ public class CompatibilityTest {
         Assert.assertEquals("24.20", list.get(0).get(11));
     }
 
+    @Test
+    public void t08() {
+        // https://github.com/alibaba/easyexcel/issues/2693
+        // Temporary files may be deleted if there is no operation for a long time, so they need to be recreated.
+        File file = TestFileUtil.createNewFile("compatibility/t08.xlsx");
+        EasyExcel.write(file, SimpleData.class)
+            .sheet()
+            .doWrite(data());
+
+        List<Map<Integer, Object>> list = EasyExcel.read(file)
+            .readCache(new Ehcache(null, 20))
+            .sheet()
+            .doReadSync();
+        Assert.assertEquals(10L, list.size());
+
+        FileUtils.delete(new File(System.getProperty(TempFile.JAVA_IO_TMPDIR)));
+
+        list = EasyExcel.read(file)
+            .readCache(new Ehcache(null, 20))
+            .sheet()
+            .doReadSync();
+        Assert.assertEquals(10L, list.size());
+    }
+
+    private List<SimpleData> data() {
+        List<SimpleData> list = new ArrayList<SimpleData>();
+        for (int i = 0; i < 10; i++) {
+            SimpleData simpleData = new SimpleData();
+            simpleData.setName("姓名" + i);
+            list.add(simpleData);
+        }
+        return list;
+    }
 }

easyexcel-test/src/test/java/com/alibaba/easyexcel/test/core/large/LargeDataTest.java

@@ -133,18 +133,7 @@ public class LargeDataTest {
         LOGGER.info("{} vs {}", cost, costPoi);
         Assert.assertTrue(costPoi * 2 > cost);
     }
-    @Test
-    public void t05Read() throws Exception {
-        long start = System.currentTimeMillis();
-        EasyExcel.read(TestFileUtil.getPath() + "large" + File.separator + "large07.xlsx", LargeData.class,
-            new LargeDataListener()).headRowNumber(2).sheet().doRead();
-        LOGGER.info("Large data total time spent:{}", System.currentTimeMillis() - start);
-        FileUtils.delete(new File(System.getProperty(TempFile.JAVA_IO_TMPDIR)));
-        start = System.currentTimeMillis();
-        EasyExcel.read(TestFileUtil.getPath() + "large" + File.separator + "large07.xlsx", LargeData.class,
-            new LargeDataListener()).headRowNumber(2).sheet().doRead();
-        LOGGER.info("Large data total time spent:{}", System.currentTimeMillis() - start);
-    }
+
     private List<LargeData> data() {
         List<LargeData> list = new ArrayList<>();
         int size = i + 100;

update.md

@@ -2,6 +2,7 @@
 
 * 兼容`LocalDate` [Issue #2908](https://github.com/alibaba/easyexcel/issues/2908)
 * 优化大文件内存存储，减少内存占用 [Issue #2657](https://github.com/alibaba/easyexcel/issues/2657)
+* 在临时文件被删除的情况下能正常的读取 [Issue #2693](https://github.com/alibaba/easyexcel/issues/2693)
 
 # 3.2.0