防止用户不调用finish

easyexcel-core/src/main/java/com/alibaba/excel/ExcelReader.java

@@ -11,11 +11,14 @@ import com.alibaba.excel.context.AnalysisContext;
 import com.alibaba.excel.read.metadata.ReadSheet;
 import com.alibaba.excel.read.metadata.ReadWorkbook;
 
+import lombok.extern.slf4j.Slf4j;
+
 /**
  * Excel readers are all read in event mode.
  *
  * @author jipengfei
  */
+@Slf4j
 public class ExcelReader implements Closeable {
 
     /**
@@ -104,4 +107,17 @@ public class ExcelReader implements Closeable {
     public void close() {
         finish();
     }
+
+    /**
+     * Prevents calls to {@link #finish} from freeing the cache
+     *
+     */
+    @Override
+    protected void finalize() {
+        try {
+            finish();
+        } catch (Throwable e) {
+            log.warn("Destroy object failed", e);
+        }
+    }
 }

easyexcel-core/src/main/java/com/alibaba/excel/ExcelWriter.java

@@ -12,6 +12,8 @@ import com.alibaba.excel.write.metadata.WriteTable;
 import com.alibaba.excel.write.metadata.WriteWorkbook;
 import com.alibaba.excel.write.metadata.fill.FillConfig;
 
+import lombok.extern.slf4j.Slf4j;
+
 /**
  * Excel Writer This tool is used to write value out to Excel via POI. This object can perform the following two
  * functions.
@@ -23,6 +25,7 @@ import com.alibaba.excel.write.metadata.fill.FillConfig;
  *
  * @author jipengfei
  */
+@Slf4j
 public class ExcelWriter implements Closeable {
 
     private final ExcelBuilder excelBuilder;
@@ -154,4 +157,16 @@ public class ExcelWriter implements Closeable {
     public void close() {
         finish();
     }
+
+    /**
+     * Prevents calls to {@link #finish} from freeing the cache
+     */
+    @Override
+    protected void finalize() {
+        try {
+            finish();
+        } catch (Throwable e) {
+            log.warn("Destroy object failed", e);
+        }
+    }
 }