Excel支持导出对象的子列表方法
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RuoYi
parent
e7b9e12d15
commit
5408af9d1f
@ -83,6 +83,11 @@ public @interface Excel
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*/
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public String[] combo() default {};
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/**
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* 是否需要纵向合并单元格,应对需求:含有list集合单元格)
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*/
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public boolean needMerge() default false;
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/**
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* 是否导出数据,应对需求:有时我们需要导出一份模板,这是标题需要但内容需要用户手工填写.
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*/
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@ -332,7 +332,7 @@ public final class HTMLFilter
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final String name = m.group(1).toLowerCase();
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if (allowed(name))
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{
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if (false == inArray(name, vSelfClosingTags))
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if (!inArray(name, vSelfClosingTags))
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{
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if (vTagCounts.containsKey(name))
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{
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@ -4,12 +4,14 @@ import java.io.IOException;
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import java.io.InputStream;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.lang.reflect.ParameterizedType;
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import java.math.BigDecimal;
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import java.text.DecimalFormat;
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import java.time.LocalDate;
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import java.time.LocalDateTime;
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import java.util.ArrayList;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Comparator;
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import java.util.Date;
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import java.util.HashMap;
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@ -20,6 +22,7 @@ import java.util.stream.Collectors;
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import javax.servlet.http.HttpServletResponse;
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import org.apache.commons.lang3.ArrayUtils;
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import org.apache.commons.lang3.RegExUtils;
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import org.apache.commons.lang3.reflect.FieldUtils;
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import org.apache.poi.ss.usermodel.BorderStyle;
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import org.apache.poi.ss.usermodel.Cell;
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import org.apache.poi.ss.usermodel.CellStyle;
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@ -126,6 +129,26 @@ public class ExcelUtil<T>
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*/
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private short maxHeight;
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/**
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* 合并后最后行数
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*/
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private int subMergedLastRowNum = 0;
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/**
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* 合并后开始行数
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*/
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private int subMergedFirstRowNum = 1;
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/**
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* 对象的子列表方法
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*/
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private Method subMethod;
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/**
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* 对象的子列表属性
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*/
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private List<Field> subFields;
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/**
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* 统计列表
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*/
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@ -175,6 +198,7 @@ public class ExcelUtil<T>
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createExcelField();
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createWorkbook();
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createTitle();
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createSubHead();
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}
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/**
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@ -184,13 +208,48 @@ public class ExcelUtil<T>
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{
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if (StringUtils.isNotEmpty(title))
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{
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subMergedFirstRowNum++;
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subMergedLastRowNum++;
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int titleLastCol = this.fields.size() - 1;
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if (isSubList())
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{
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titleLastCol = titleLastCol + subFields.size() - 1;
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}
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Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);
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titleRow.setHeightInPoints(30);
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Cell titleCell = titleRow.createCell(0);
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titleCell.setCellStyle(styles.get("title"));
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titleCell.setCellValue(title);
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sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(),
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this.fields.size() - 1));
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sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(), titleLastCol));
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}
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}
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/**
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* 创建对象的子列表名称
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*/
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public void createSubHead()
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{
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if (isSubList())
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{
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subMergedFirstRowNum++;
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subMergedLastRowNum++;
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Row subRow = sheet.createRow(rownum);
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int excelNum = 0;
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for (Object[] objects : fields)
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{
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Excel attr = (Excel) objects[1];
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Cell headCell1 = subRow.createCell(excelNum);
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headCell1.setCellValue(attr.name());
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headCell1.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
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excelNum++;
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}
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int headFirstRow = excelNum - 1;
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int headLastRow = headFirstRow + subFields.size() - 1;
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if (headLastRow > headFirstRow)
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{
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sheet.addMergedRegion(new CellRangeAddress(rownum, rownum, headFirstRow, headLastRow));
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}
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rownum++;
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}
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}
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@ -378,7 +437,6 @@ public class ExcelUtil<T>
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* @param list 导出数据集合
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* @param sheetName 工作表的名称
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* @return 结果
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* @throws IOException
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*/
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public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)
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{
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@ -393,7 +451,6 @@ public class ExcelUtil<T>
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* @param sheetName 工作表的名称
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* @param title 标题
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* @return 结果
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* @throws IOException
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*/
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public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title)
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{
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@ -468,8 +525,20 @@ public class ExcelUtil<T>
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// 写入各个字段的列头名称
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for (Object[] os : fields)
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{
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Field field = (Field) os[0];
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Excel excel = (Excel) os[1];
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this.createCell(excel, row, column++);
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if (Collection.class.isAssignableFrom(field.getType()))
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{
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for (Field subField : subFields)
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{
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Excel subExcel = subField.getAnnotation(Excel.class);
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this.createHeadCell(subExcel, row, column++);
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}
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}
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else
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{
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this.createHeadCell(excel, row, column++);
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}
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}
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if (Type.EXPORT.equals(type))
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{
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@ -485,24 +554,63 @@ public class ExcelUtil<T>
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* @param index 序号
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* @param row 单元格行
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*/
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@SuppressWarnings("unchecked")
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public void fillExcelData(int index, Row row)
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{
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int startNo = index * sheetSize;
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int endNo = Math.min(startNo + sheetSize, list.size());
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int rowNo = (1 + rownum) - startNo;
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for (int i = startNo; i < endNo; i++)
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{
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row = sheet.createRow(i + 1 + rownum - startNo);
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rowNo = i > 1 ? rowNo + 1 : rowNo + i;
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row = sheet.createRow(rowNo);
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// 得到导出对象.
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T vo = (T) list.get(i);
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Collection<?> subList = null;
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if (isSubListValue(vo))
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{
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subList = getListCellValue(vo);
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subMergedLastRowNum = subMergedLastRowNum + subList.size();
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}
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int column = 0;
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for (Object[] os : fields)
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{
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Field field = (Field) os[0];
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Excel excel = (Excel) os[1];
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if (Collection.class.isAssignableFrom(field.getType()) && StringUtils.isNotNull(subList))
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{
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boolean subFirst = false;
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for (Object obj : subList)
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{
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if (subFirst)
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{
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rowNo++;
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row = sheet.createRow(rowNo);
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}
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List<Field> subFields = FieldUtils.getFieldsListWithAnnotation(obj.getClass(), Excel.class);
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int subIndex = 0;
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for (Field subField : subFields)
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{
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if (subField.isAnnotationPresent(Excel.class))
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{
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subField.setAccessible(true);
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Excel attr = subField.getAnnotation(Excel.class);
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this.addCell(attr, row, (T) obj, subField, column + subIndex);
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}
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subIndex++;
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}
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subFirst = true;
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}
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this.subMergedFirstRowNum = this.subMergedFirstRowNum + subList.size();
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}
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else
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{
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this.addCell(excel, row, vo, field, column++);
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}
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}
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}
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}
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/**
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* 创建表格样式
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@ -634,7 +742,7 @@ public class ExcelUtil<T>
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/**
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* 创建单元格
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*/
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public Cell createCell(Excel attr, Row row, int column)
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public Cell createHeadCell(Excel attr, Row row, int column)
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{
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// 创建列
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Cell cell = row.createCell(column);
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@ -642,6 +750,15 @@ public class ExcelUtil<T>
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cell.setCellValue(attr.name());
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setDataValidation(attr, row, column);
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cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
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if (isSubList())
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{
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// 填充默认样式，防止合并单元格样式失效
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sheet.setDefaultColumnStyle(column, styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor())));
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if (attr.needMerge())
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{
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sheet.addMergedRegion(new CellRangeAddress(rownum - 1, rownum, column, column));
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}
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}
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return cell;
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}
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@ -749,6 +866,11 @@ public class ExcelUtil<T>
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{
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// 创建cell
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cell = row.createCell(column);
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if (isSubListValue(vo) && attr.needMerge())
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{
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CellRangeAddress cellAddress = new CellRangeAddress(subMergedFirstRowNum, subMergedLastRowNum, column, column);
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sheet.addMergedRegion(cellAddress);
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}
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cell.setCellStyle(styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor())));
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// 用于读取对象中的属性
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@ -839,7 +961,7 @@ public class ExcelUtil<T>
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for (String item : convertSource)
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{
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String[] itemArray = item.split("=");
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if (StringUtils.containsAny(separator, propertyValue))
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if (StringUtils.containsAny(propertyValue, separator))
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{
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for (String value : propertyValue.split(separator))
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{
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@ -876,7 +998,7 @@ public class ExcelUtil<T>
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for (String item : convertSource)
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{
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String[] itemArray = item.split("=");
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if (StringUtils.containsAny(separator, propertyValue))
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if (StringUtils.containsAny(propertyValue, separator))
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{
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for (String value : propertyValue.split(separator))
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{
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@ -1049,6 +1171,13 @@ public class ExcelUtil<T>
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field.setAccessible(true);
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fields.add(new Object[] { field, attr });
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}
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if (Collection.class.isAssignableFrom(field.getType()))
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{
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subMethod = getSubMethod(field.getName(), clazz);
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ParameterizedType pt = (ParameterizedType) field.getGenericType();
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Class<?> subClass = (Class<?>) pt.getActualTypeArguments()[0];
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this.subFields = FieldUtils.getFieldsListWithAnnotation(subClass, Excel.class);
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}
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}
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// 多注解
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@ -1227,4 +1356,61 @@ public class ExcelUtil<T>
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}
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return str;
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}
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/**
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* 是否有对象的子列表
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*/
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public boolean isSubList()
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{
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return StringUtils.isNotNull(subFields) && subFields.size() > 0;
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}
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/**
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* 是否有对象的子列表，集合不为空
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*/
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public boolean isSubListValue(T vo)
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{
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return StringUtils.isNotNull(subFields) && subFields.size() > 0 && StringUtils.isNotNull(getListCellValue(vo)) && getListCellValue(vo).size() > 0;
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}
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/**
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* 获取集合的值
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*/
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public Collection<?> getListCellValue(Object obj)
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{
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Object value;
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try
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{
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value = subMethod.invoke(obj, new Object[] {});
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}
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catch (Exception e)
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{
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return new ArrayList<Object>();
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}
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return (Collection<?>) value;
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}
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/**
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* 获取对象的子列表方法
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*
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* @param name 名称
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* @param pojoClass 类对象
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* @return 子列表方法
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*/
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public Method getSubMethod(String name, Class<?> pojoClass)
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{
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StringBuffer getMethodName = new StringBuffer("get");
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getMethodName.append(name.substring(0, 1).toUpperCase());
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getMethodName.append(name.substring(1));
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Method method = null;
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try
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{
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method = pojoClass.getMethod(getMethodName.toString(), new Class[] {});
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}
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catch (Exception e)
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{
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log.error("获取对象异常{}", e.getMessage());
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}
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return method;
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}
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}
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