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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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66
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
*/
private Method subMethod;
private Map<String, Method> subMethods = new HashMap<>();
/**
* 对象的子列表属性
*/
private List<Field> subFields;
private Map<String, List<Field>> subFieldsMap = new HashMap<>();
/**
* 统计列表
@ -252,7 +252,7 @@ public class ExcelUtil<T>
int titleLastCol = this.fields.size() - 1;
if (isSubList())
{
titleLastCol = titleLastCol + subFields.size() - 1;
titleLastCol = titleLastCol + subFieldsMap.values().size() - 1;
}
Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);
titleRow.setHeightInPoints(30);
@ -272,16 +272,17 @@ public class ExcelUtil<T>
{
Row subRow = sheet.createRow(rownum);
int column = 0;
int subFieldSize = subFields != null ? subFields.size() : 0;
for (Object[] objects : fields)
{
Field field = (Field) objects[0];
Excel attr = (Excel) objects[1];
CellStyle cellStyle = styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor()));
if (Collection.class.isAssignableFrom(field.getType()))
{
Cell cell = subRow.createCell(column);
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)
{
CellRangeAddress cellAddress = new CellRangeAddress(rownum, rownum, column, column + subFieldSize - 1);
@ -293,7 +294,7 @@ public class ExcelUtil<T>
{
Cell cell = subRow.createCell(column++);
cell.setCellValue(attr.name());
cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
cell.setCellStyle(cellStyle);
}
}
rownum++;
@ -374,7 +375,11 @@ public class ExcelUtil<T>
Map<String, Integer> cellMap = new HashMap<String, Integer>();
// 获取表头
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);
if (StringUtils.isNotNull(cell))
@ -382,10 +387,6 @@ public class ExcelUtil<T>
String value = this.getCellValue(heard, i).toString();
cellMap.put(value, i);
}
else
{
cellMap.put(null, i);
}
}
// 有数据时才处理 得到类的所有field.
List<Object[]> fields = this.getFields();
@ -697,7 +698,8 @@ public class ExcelUtil<T>
Excel excel = (Excel) os[1];
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);
this.createHeadCell(subExcel, row, column++);
@ -710,7 +712,7 @@ public class ExcelUtil<T>
}
if (Type.EXPORT.equals(type))
{
fillExcelData(index, row);
fillExcelData(index);
addStatisticsRow();
}
}
@ -723,7 +725,7 @@ public class ExcelUtil<T>
* @param row 单元格行
*/
@SuppressWarnings("unchecked")
public void fillExcelData(int index, Row row)
public void fillExcelData(int index)
{
int startNo = index * sheetSize;
int endNo = Math.min(startNo + sheetSize, list.size());
@ -731,7 +733,7 @@ public class ExcelUtil<T>
for (int i = startNo; i < endNo; i++)
{
row = sheet.createRow(currentRowNum);
Row row = sheet.createRow(currentRowNum);
T vo = (T) list.get(i);
int column = 0;
int maxSubListSize = getCurrentMaxSubListSize(vo);
@ -747,6 +749,7 @@ public class ExcelUtil<T>
if (subList != null && !subList.isEmpty())
{
int subIndex = 0;
List<Field> currentSubFields = subFieldsMap.get(field.getName());
for (Object subVo : subList)
{
Row subRow = sheet.getRow(currentRowNum + subIndex);
@ -756,14 +759,14 @@ public class ExcelUtil<T>
}
int subColumn = column;
for (Field subField : subFields)
for (Field subField : currentSubFields)
{
Excel subExcel = subField.getAnnotation(Excel.class);
addCell(subExcel, subRow, (T) subVo, subField, subColumn++);
}
subIndex++;
}
column += subFields.size();
column += currentSubFields.size();
}
}
catch (Exception e)
@ -1132,7 +1135,7 @@ public class ExcelUtil<T>
{
// 创建cell
cell = row.createCell(column);
if (isSubListValue(vo) && getListCellValue(vo).size() > 1 && attr.needMerge())
if (isSubListValue(vo) && getListCellValue(vo) > 1 && attr.needMerge())
{
if (subMergedLastRowNum >= subMergedFirstRowNum)
{
@ -1603,10 +1606,11 @@ public class ExcelUtil<T>
}
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();
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()
{
return StringUtils.isNotNull(subFields) && subFields.size() > 0;
return !StringUtils.isEmpty(subFieldsMap);
}
/**
@ -1867,24 +1871,32 @@ public class ExcelUtil<T>
*/
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
*/
public Collection<?> getListCellValue(Object obj)
public int getListCellValue(Object obj)
{
Object value;
Collection<?> value;
int max = 0;
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)
{
return new ArrayList<Object>();
return 0;
}
return (Collection<?>) value;
return max;
}
/**