Excel注解支持自动统计数据总和

This commit is contained in:
RuoYi 2020-08-26 11:37:49 +08:00
parent fa5596bb20
commit bf771ae5c8
2 changed files with 74 additions and 0 deletions

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@ -100,6 +100,11 @@ public @interface Excel
*/ */
public String targetAttr() default ""; public String targetAttr() default "";
/**
* 是否自动统计数据,在最后追加一行统计数据总和
*/
public boolean isStatistics() default false;
/** /**
* 字段类型0导出导入1仅导出2仅导入 * 字段类型0导出导入1仅导出2仅导入
*/ */

View File

@ -16,6 +16,7 @@ import java.util.Date;
import java.util.HashMap; import java.util.HashMap;
import java.util.List; import java.util.List;
import java.util.Map; import java.util.Map;
import java.util.Set;
import java.util.UUID; import java.util.UUID;
import java.util.stream.Collectors; import java.util.stream.Collectors;
import org.apache.poi.hssf.usermodel.HSSFDateUtil; import org.apache.poi.hssf.usermodel.HSSFDateUtil;
@ -103,6 +104,16 @@ public class ExcelUtil<T>
*/ */
private List<Object[]> fields; private List<Object[]> fields;
/**
* 统计列表
*/
private Map<Integer, Double> statistics = new HashMap<Integer, Double>();
/**
* 数字格式
*/
private static final DecimalFormat DOUBLE_FORMAT = new DecimalFormat("######0.00");
/** /**
* 实体对象 * 实体对象
*/ */
@ -342,6 +353,7 @@ public class ExcelUtil<T>
if (Type.EXPORT.equals(type)) if (Type.EXPORT.equals(type))
{ {
fillExcelData(index, row); fillExcelData(index, row);
addStatisticsRow();
} }
} }
String filename = encodingFilename(sheetName); String filename = encodingFilename(sheetName);
@ -449,6 +461,15 @@ public class ExcelUtil<T>
style.setFont(headerFont); style.setFont(headerFont);
styles.put("header", style); styles.put("header", style);
style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
Font totalFont = wb.createFont();
totalFont.setFontName("Arial");
totalFont.setFontHeightInPoints((short) 10);
style.setFont(totalFont);
styles.put("total", style);
return styles; return styles;
} }
@ -560,6 +581,7 @@ public class ExcelUtil<T>
// 设置列类型 // 设置列类型
setCellVo(value, attr, cell); setCellVo(value, attr, cell);
} }
addStatisticsData(column, Convert.toStr(value), attr);
} }
} }
catch (Exception e) catch (Exception e)
@ -726,6 +748,53 @@ public class ExcelUtil<T>
return DictUtils.getDictValue(dictType, dictLabel, separator); return DictUtils.getDictValue(dictType, dictLabel, separator);
} }
/**
* 合计统计信息
*/
private void addStatisticsData(Integer index, String text, Excel entity)
{
if (entity != null && entity.isStatistics())
{
Double temp = 0D;
if (!statistics.containsKey(index))
{
statistics.put(index, temp);
}
try
{
temp = Double.valueOf(text);
}
catch (NumberFormatException e)
{
}
statistics.put(index, statistics.get(index) + temp);
}
}
/**
* 创建统计行
*/
public void addStatisticsRow()
{
if (statistics.size() > 0)
{
Cell cell = null;
Row row = sheet.createRow(sheet.getLastRowNum() + 1);
Set<Integer> keys = statistics.keySet();
cell = row.createCell(0);
cell.setCellStyle(styles.get("total"));
cell.setCellValue("合计");
for (Integer key : keys)
{
cell = row.createCell(key);
cell.setCellStyle(styles.get("total"));
cell.setCellValue(DOUBLE_FORMAT.format(statistics.get(key)));
}
statistics.clear();
}
}
/** /**
* 编码文件名 * 编码文件名
*/ */