delete poi same name package, move PoiUtils to excel utils package.

fix Java9 modular bug

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

@@ -0,0 +1,61 @@
+package com.alibaba.excel.util;
+
+import com.alibaba.excel.exception.ExcelRuntimeException;
+import org.apache.poi.hssf.record.RowRecord;
+import org.apache.poi.hssf.usermodel.HSSFRow;
+import org.apache.poi.ss.usermodel.Row;
+import org.apache.poi.util.BitField;
+import org.apache.poi.util.BitFieldFactory;
+import org.apache.poi.xssf.usermodel.XSSFRow;
+
+import java.lang.reflect.Field;
+
+/**
+ * utils
+ *
+ * @author Jiaju Zhuang
+ */
+public class PoiUtils {
+
+    /**
+     * Whether to customize the height
+     */
+    public static final BitField CUSTOM_HEIGHT = BitFieldFactory.getInstance(0x640);
+
+    private static Field ROW_RECORD_FIELD;
+
+    /**
+     * Whether to customize the height
+     *
+     * @param row row
+     * @return
+     */
+    public static boolean customHeight(Row row) {
+        if (row instanceof XSSFRow) {
+            XSSFRow xssfRow = (XSSFRow) row;
+            return xssfRow.getCTRow().getCustomHeight();
+        }
+        if (row instanceof HSSFRow) {
+            HSSFRow hssfRow = (HSSFRow) row;
+            try {
+                if (ROW_RECORD_FIELD == null) {
+                    initRowRecordField();
+                }
+                RowRecord record = (RowRecord) ROW_RECORD_FIELD.get(hssfRow);
+                return CUSTOM_HEIGHT.getValue(record.getOptionFlags()) == 1;
+            } catch (IllegalAccessException ignore) {
+            }
+        }
+        return false;
+    }
+
+
+    private static void initRowRecordField() {
+        try {
+            ROW_RECORD_FIELD = HSSFRow.class.getDeclaredField("row");
+            ROW_RECORD_FIELD.setAccessible(true);
+        } catch (NoSuchFieldException e) {
+            throw new ExcelRuntimeException(e);
+        }
+    }
+}

easyexcel-core/src/main/java/com/alibaba/excel/write/executor/ExcelWriteFillExecutor.java

@@ -37,7 +37,7 @@ import lombok.EqualsAndHashCode;
 import lombok.Getter;
 import lombok.Setter;
 import org.apache.commons.collections4.CollectionUtils;
-import org.apache.poi.hssf.usermodel.PoiUtils;
+import com.alibaba.excel.util.PoiUtils;
 import org.apache.poi.ss.usermodel.Cell;
 import org.apache.poi.ss.usermodel.CellStyle;
 import org.apache.poi.ss.usermodel.CellType;

easyexcel-core/src/main/java/org/apache/poi/hssf/usermodel/PoiUtils.java

@@ -1,37 +0,0 @@
-package org.apache.poi.hssf.usermodel;
-
-import org.apache.poi.ss.usermodel.Row;
-import org.apache.poi.util.BitField;
-import org.apache.poi.util.BitFieldFactory;
-import org.apache.poi.xssf.usermodel.XSSFRow;
-
-/**
- * utils
- *
- * @author Jiaju Zhuang
- */
-public class PoiUtils {
-
-    /**
-     * Whether to customize the height
-     */
-    public static final BitField CUSTOM_HEIGHT = BitFieldFactory.getInstance(0x640);
-
-    /**
-     * Whether to customize the height
-     *
-     * @param row row
-     * @return
-     */
-    public static boolean customHeight(Row row) {
-        if (row instanceof XSSFRow) {
-            XSSFRow xssfRow = (XSSFRow)row;
-            return xssfRow.getCTRow().getCustomHeight();
-        }
-        if (row instanceof HSSFRow) {
-            HSSFRow hssfRow = (HSSFRow)row;
-            return CUSTOM_HEIGHT.getValue(hssfRow.getRowRecord().getOptionFlags()) == 1;
-        }
-        return false;
-    }
-}