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Excel导出时在初始化表头时进修解析值的初始化,在创建单元格时使用HashMap直接获取值,大幅度节省时间复杂度上的开销

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pull/354/head
xiaoyang 2 years ago
parent 78e61d89ba
commit cbce71bcdc
1 changed files with 67 additions and 50 deletions
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83
ruoyi-common/ruoyi-common-core/src/main/java/com/ruoyi/common/core/utils/poi/ExcelUtil.java
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@ -533,7 +533,8 @@ public class ExcelUtil<T>
for (int index = 0; index < sheetNo; index++)
{
createSheet(sheetNo, index);
//字段转换列表<列下标,<待转值,转换值>>
Map<Integer, Map<String, String>> fieldConversionMap = new HashMap<>();
// 产生一行
Row row = sheet.createRow(rownum);
int column = 0;
@ -547,17 +548,17 @@ public class ExcelUtil<T>
for (Field subField : subFields)
{
Excel subExcel = subField.getAnnotation(Excel.class);
this.createHeadCell(subExcel, row, column++);
this.createHeadCellAndInitFieldConversion(subExcel, row, column++,fieldConversionMap);
}
}
else
{
this.createHeadCell(excel, row, column++);
this.createHeadCellAndInitFieldConversion(excel, row, column++,fieldConversionMap);
}
}
if (Type.EXPORT.equals(type))
{
fillExcelData(index, row);
fillExcelData(index, row, fieldConversionMap);
addStatisticsRow();
}
}
@ -568,9 +569,10 @@ public class ExcelUtil<T>
*
* @param index 序号
* @param row 单元格行
* @param fieldConversionMap 字段转换Map
*/
@SuppressWarnings("unchecked")
public void fillExcelData(int index, Row row)
public void fillExcelData(int index, Row row, Map<Integer, Map<String, String>> fieldConversionMap)
{
int startNo = index * sheetSize;
int endNo = Math.min(startNo + sheetSize, list.size());
@ -618,7 +620,7 @@ public class ExcelUtil<T>
{
subField.setAccessible(true);
Excel attr = subField.getAnnotation(Excel.class);
this.addCell(attr, row, (T) obj, subField, column + subIndex);
this.addCell(attr, row, (T) obj, subField, column + subIndex, fieldConversionMap);
}
subIndex++;
}
@ -628,7 +630,7 @@ public class ExcelUtil<T>
}
else
{
this.addCell(excel, row, vo, field, column++);
this.addCell(excel, row, vo, field, column++, fieldConversionMap);
}
}
}
@ -760,9 +762,9 @@ public class ExcelUtil<T>
}
/**
* 创建单元格
* 创建首行单元格,并且初始化字段的转换
*/
public Cell createHeadCell(Excel attr, Row row, int column)
public Cell createHeadCellAndInitFieldConversion(Excel attr, Row row, int column, Map<Integer, Map<String, String>> fieldConversionMap)
{
// 创建列
Cell cell = row.createCell(column);
@ -770,6 +772,19 @@ public class ExcelUtil<T>
cell.setCellValue(attr.name());
setDataValidation(attr, row, column);
cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
//字段转换初始化(通过readConverterExp字符转换)
if (StringUtils.isNotEmpty(attr.readConverterExp()))
{
HashMap<String, String> conversionMap = new HashMap<>();
String allList = attr.readConverterExp();
String[] split = allList.split(",");
for (String dictTagItem : split)
{
String[] split1 = dictTagItem.split("=");
conversionMap.put(split1[0], split1[1]);
}
fieldConversionMap.put(column, conversionMap);
}
if (isSubList())
{
// 填充默认样式，防止合并单元格样式失效
@ -885,8 +900,15 @@ public class ExcelUtil<T>
/**
* 添加单元格
* @param attr 当前单元格表注解
* @param row 当前单元格归属行
* @param vo 单元格内容
* @param field 单元格字段
* @param column 单元格的列号
* @param fieldConversionMap 所有单元格的解析值字典
* @return 生成后的单元格
*/
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,Map<Integer, Map<String, String>> fieldConversionMap)
{
Cell cell = null;
try
@ -914,9 +936,9 @@ public class ExcelUtil<T>
{
cell.setCellValue(parseDateToStr(dateFormat, value));
}
else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value))
else if (fieldConversionMap.get(column)!=null && StringUtils.isNotNull(value))
{
cell.setCellValue(convertByExp(Convert.toStr(value), readConverterExp, separator));
cell.setCellValue(convertByExpMap(Convert.toStr(value), separator, fieldConversionMap.get(column)));
}
else if (value instanceof BigDecimal && -1 != attr.scale())
{
@ -1033,38 +1055,33 @@ public class ExcelUtil<T>
/**
* 解析导出值 0=男,1=女,2=未知
*
* @param propertyValue 参数值
* @param converterExp 翻译注解
* @param separator 分隔符
* @param propertyValue 解析前的值
* @param separator 分隔符
* @param conversionMap 解析字典
* @return 解析后值
*/
public static String convertByExp(String propertyValue, String converterExp, String separator)
public static String convertByExpMap(String propertyValue,String separator,Map<String,String> conversionMap)
{
StringBuilder propertyString = new StringBuilder();
String[] convertSource = converterExp.split(",");
for (String item : convertSource)
List<String> afterConversionValueList=new ArrayList<>();
//如果某个对象值为"1,2,3",则根据转换Map表全都进修转换
if (StringUtils.containsAny(propertyValue, separator))
{
String[] itemArray = item.split("=");
if (StringUtils.containsAny(propertyValue, separator))
for (String value : propertyValue.split(separator))
{
for (String value : propertyValue.split(separator))
String conversionValue = conversionMap.get(value);
if(StringUtils.isNotEmpty(conversionValue))
{
if (itemArray[0].equals(value))
{
propertyString.append(itemArray[1] + separator);
break;
}
afterConversionValueList.add(conversionValue);
}
}
else
}else
{
if(StringUtils.isNotEmpty(conversionMap.get(propertyValue)))
{
if (itemArray[0].equals(propertyValue))
{
return itemArray[1];
}
afterConversionValueList.add(conversionMap.get(propertyValue));
}
}
return StringUtils.stripEnd(propertyString.toString(), separator);
return String.join(separator,afterConversionValueList);
}
/**

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