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支持Excel导出对象的多个子列表

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RuoYi
2025-12-02 19:13:23 +08:00
parent 169ca65ed3
commit 0cb12f5440
1 changed files with 40 additions and 28 deletions
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68
ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
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@ -174,12 +174,12 @@ public class ExcelUtil<T>
/** /**
* 对象的子列表方法 * 对象的子列表方法
*/ */
private Method subMethod; private Map<String, Method> subMethods = new HashMap<>();
/** /**
* 对象的子列表属性 * 对象的子列表属性
*/ */
private List<Field> subFields; private Map<String, List<Field>> subFieldsMap = new HashMap<>();
/** /**
* 统计列表 * 统计列表
@ -252,7 +252,7 @@ public class ExcelUtil<T>
int titleLastCol = this.fields.size() - 1; int titleLastCol = this.fields.size() - 1;
if (isSubList()) if (isSubList())
{ {
titleLastCol = titleLastCol + subFields.size() - 1; titleLastCol = titleLastCol + subFieldsMap.values().size() - 1;
} }
Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0); Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);
titleRow.setHeightInPoints(30); titleRow.setHeightInPoints(30);
@ -272,16 +272,17 @@ public class ExcelUtil<T>
{ {
Row subRow = sheet.createRow(rownum); Row subRow = sheet.createRow(rownum);
int column = 0; int column = 0;
int subFieldSize = subFields != null ? subFields.size() : 0;
for (Object[] objects : fields) for (Object[] objects : fields)
{ {
Field field = (Field) objects[0]; Field field = (Field) objects[0];
Excel attr = (Excel) objects[1]; Excel attr = (Excel) objects[1];
CellStyle cellStyle = styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor()));
if (Collection.class.isAssignableFrom(field.getType())) if (Collection.class.isAssignableFrom(field.getType()))
{ {
Cell cell = subRow.createCell(column); Cell cell = subRow.createCell(column);
cell.setCellValue(attr.name()); cell.setCellValue(attr.name());
cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor()))); cell.setCellStyle(cellStyle);
int subFieldSize = subFieldsMap != null ? subFieldsMap.get(field.getName()).size() : 0;
if (subFieldSize > 1) if (subFieldSize > 1)
{ {
CellRangeAddress cellAddress = new CellRangeAddress(rownum, rownum, column, column + subFieldSize - 1); CellRangeAddress cellAddress = new CellRangeAddress(rownum, rownum, column, column + subFieldSize - 1);
@ -293,7 +294,7 @@ public class ExcelUtil<T>
{ {
Cell cell = subRow.createCell(column++); Cell cell = subRow.createCell(column++);
cell.setCellValue(attr.name()); cell.setCellValue(attr.name());
cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor()))); cell.setCellStyle(cellStyle);
} }
} }
rownum++; rownum++;
@ -374,7 +375,11 @@ public class ExcelUtil<T>
Map<String, Integer> cellMap = new HashMap<String, Integer>(); Map<String, Integer> cellMap = new HashMap<String, Integer>();
// 获取表头 // 获取表头
Row heard = sheet.getRow(titleNum); Row heard = sheet.getRow(titleNum);
for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++) if (heard == null)
{
throw new UtilException("文件标题行为空，请检查Excel文件格式");
}
for (int i = 0; i < heard.getLastCellNum(); i++)
{ {
Cell cell = heard.getCell(i); Cell cell = heard.getCell(i);
if (StringUtils.isNotNull(cell)) if (StringUtils.isNotNull(cell))
@ -382,10 +387,6 @@ public class ExcelUtil<T>
String value = this.getCellValue(heard, i).toString(); String value = this.getCellValue(heard, i).toString();
cellMap.put(value, i); cellMap.put(value, i);
} }
else
{
cellMap.put(null, i);
}
} }
// 有数据时才处理 得到类的所有field. // 有数据时才处理 得到类的所有field.
List<Object[]> fields = this.getFields(); List<Object[]> fields = this.getFields();
@ -697,7 +698,8 @@ public class ExcelUtil<T>
Excel excel = (Excel) os[1]; Excel excel = (Excel) os[1];
if (Collection.class.isAssignableFrom(field.getType())) if (Collection.class.isAssignableFrom(field.getType()))
{ {
for (Field subField : subFields) List<Field> currentSubFields = subFieldsMap.get(field.getName());
for (Field subField : currentSubFields)
{ {
Excel subExcel = subField.getAnnotation(Excel.class); Excel subExcel = subField.getAnnotation(Excel.class);
this.createHeadCell(subExcel, row, column++); this.createHeadCell(subExcel, row, column++);
@ -710,7 +712,7 @@ public class ExcelUtil<T>
} }
if (Type.EXPORT.equals(type)) if (Type.EXPORT.equals(type))
{ {
fillExcelData(index, row); fillExcelData(index);
addStatisticsRow(); addStatisticsRow();
} }
} }
@ -723,7 +725,7 @@ public class ExcelUtil<T>
* @param row 单元格行 * @param row 单元格行
*/ */
@SuppressWarnings("unchecked") @SuppressWarnings("unchecked")
public void fillExcelData(int index, Row row) public void fillExcelData(int index)
{ {
int startNo = index * sheetSize; int startNo = index * sheetSize;
int endNo = Math.min(startNo + sheetSize, list.size()); int endNo = Math.min(startNo + sheetSize, list.size());
@ -731,7 +733,7 @@ public class ExcelUtil<T>
for (int i = startNo; i < endNo; i++) for (int i = startNo; i < endNo; i++)
{ {
row = sheet.createRow(currentRowNum); Row row = sheet.createRow(currentRowNum);
T vo = (T) list.get(i); T vo = (T) list.get(i);
int column = 0; int column = 0;
int maxSubListSize = getCurrentMaxSubListSize(vo); int maxSubListSize = getCurrentMaxSubListSize(vo);
@ -747,6 +749,7 @@ public class ExcelUtil<T>
if (subList != null && !subList.isEmpty()) if (subList != null && !subList.isEmpty())
{ {
int subIndex = 0; int subIndex = 0;
List<Field> currentSubFields = subFieldsMap.get(field.getName());
for (Object subVo : subList) for (Object subVo : subList)
{ {
Row subRow = sheet.getRow(currentRowNum + subIndex); Row subRow = sheet.getRow(currentRowNum + subIndex);
@ -756,14 +759,14 @@ public class ExcelUtil<T>
} }
int subColumn = column; int subColumn = column;
for (Field subField : subFields) for (Field subField : currentSubFields)
{ {
Excel subExcel = subField.getAnnotation(Excel.class); Excel subExcel = subField.getAnnotation(Excel.class);
addCell(subExcel, subRow, (T) subVo, subField, subColumn++); addCell(subExcel, subRow, (T) subVo, subField, subColumn++);
} }
subIndex++; subIndex++;
} }
column += subFields.size(); column += currentSubFields.size();
} }
} }
catch (Exception e) catch (Exception e)
@ -1120,7 +1123,7 @@ public class ExcelUtil<T>
* 添加单元格 * 添加单元格
*/ */
@SuppressWarnings("deprecation") @SuppressWarnings("deprecation")
public Cell addCell(Excel attr, Row row, T vo, Field field, int column) public Cell addCell(Excel attr, Row row, T vo, Field field, int column)
{ {
Cell cell = null; Cell cell = null;
try try
@ -1132,7 +1135,7 @@ public class ExcelUtil<T>
{ {
// 创建cell // 创建cell
cell = row.createCell(column); cell = row.createCell(column);
if (isSubListValue(vo) && getListCellValue(vo).size() > 1 && attr.needMerge()) if (isSubListValue(vo) && getListCellValue(vo) > 1 && attr.needMerge())
{ {
if (subMergedLastRowNum >= subMergedFirstRowNum) if (subMergedLastRowNum >= subMergedFirstRowNum)
{ {
@ -1603,10 +1606,11 @@ public class ExcelUtil<T>
} }
if (Collection.class.isAssignableFrom(field.getType())) if (Collection.class.isAssignableFrom(field.getType()))
{ {
subMethod = getSubMethod(field.getName(), clazz); String fieldName = field.getName();
subMethods.put(fieldName, getSubMethod(fieldName, clazz));
ParameterizedType pt = (ParameterizedType) field.getGenericType(); ParameterizedType pt = (ParameterizedType) field.getGenericType();
Class<?> subClass = (Class<?>) pt.getActualTypeArguments()[0]; Class<?> subClass = (Class<?>) pt.getActualTypeArguments()[0];
this.subFields = FieldUtils.getFieldsListWithAnnotation(subClass, Excel.class); subFieldsMap.put(fieldName, FieldUtils.getFieldsListWithAnnotation(subClass, Excel.class));
} }
} }
@ -1859,7 +1863,7 @@ public class ExcelUtil<T>
*/ */
public boolean isSubList() public boolean isSubList()
{ {
return StringUtils.isNotNull(subFields) && subFields.size() > 0; return !StringUtils.isEmpty(subFieldsMap);
} }
/** /**
@ -1867,24 +1871,32 @@ public class ExcelUtil<T>
*/ */
public boolean isSubListValue(T vo) public boolean isSubListValue(T vo)
{ {
return StringUtils.isNotNull(subFields) && subFields.size() > 0 && StringUtils.isNotNull(getListCellValue(vo)) && getListCellValue(vo).size() > 0; return !StringUtils.isEmpty(subFieldsMap) && getListCellValue(vo) > 0;
} }
/** /**
* 获取集合的值 * 获取集合的值
*/ */
public Collection<?> getListCellValue(Object obj) public int getListCellValue(Object obj)
{ {
Object value; Collection<?> value;
int max = 0;
try try
{ {
value = subMethod.invoke(obj, new Object[] {}); for (String s : subMethods.keySet())
{
value = (Collection<?>) subMethods.get(s).invoke(obj);
if (value.size() > max)
{
max = value.size();
}
}
} }
catch (Exception e) catch (Exception e)
{ {
return new ArrayList<Object>(); return 0;
} }
return (Collection<?>) value; return max;
} }
/** /**