From 06fbda53248c3e4dfdb09db2bc05a957f918bfd9 Mon Sep 17 00:00:00 2001
From: RuoYi <yzz_ivy@163.com>
Date: 星期一, 07 十一月 2022 11:20:02 +0800
Subject: [PATCH] 修复sheet超出最大行数异常问题
---
ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java | 477 ++++++++++++++++++++++++++++++++++++++++++++++-------------
1 files changed, 373 insertions(+), 104 deletions(-)
diff --git a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
index aa77e9b..3310220 100644
--- a/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
+++ b/ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
@@ -7,10 +7,14 @@
import java.io.OutputStream;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
+import java.lang.reflect.ParameterizedType;
import java.math.BigDecimal;
import java.text.DecimalFormat;
+import java.time.LocalDate;
+import java.time.LocalDateTime;
import java.util.ArrayList;
import java.util.Arrays;
+import java.util.Collection;
import java.util.Comparator;
import java.util.Date;
import java.util.HashMap;
@@ -20,6 +24,9 @@
import java.util.UUID;
import java.util.stream.Collectors;
import javax.servlet.http.HttpServletResponse;
+import org.apache.commons.lang3.ArrayUtils;
+import org.apache.commons.lang3.RegExUtils;
+import org.apache.commons.lang3.reflect.FieldUtils;
import org.apache.poi.hssf.usermodel.HSSFClientAnchor;
import org.apache.poi.hssf.usermodel.HSSFPicture;
import org.apache.poi.hssf.usermodel.HSSFPictureData;
@@ -86,8 +93,9 @@
{
private static final Logger log = LoggerFactory.getLogger(ExcelUtil.class);
- public static final String[] FORMULA_STR = { "=", "-", "+", "@" };
+ public static final String FORMULA_REGEX_STR = "=|-|\\+|@";
+ public static final String[] FORMULA_STR = { "=", "-", "+", "@" };
/**
* Excel sheet最大行数，默认65536
@@ -133,7 +141,7 @@
* 当前行号
*/
private int rownum;
-
+
/**
* 标题
*/
@@ -143,6 +151,26 @@
* 最大高度
*/
private short maxHeight;
+
+ /**
+ * 合并后最后行数
+ */
+ private int subMergedLastRowNum = 0;
+
+ /**
+ * 合并后开始行数
+ */
+ private int subMergedFirstRowNum = 1;
+
+ /**
+ * 对象的子列表方法
+ */
+ private Method subMethod;
+
+ /**
+ * 对象的子列表属性
+ */
+ private List<Field> subFields;
/**
* 统计列表
@@ -159,9 +187,25 @@
*/
public Class<T> clazz;
+ /**
+ * 需要排除列属性
+ */
+ public String[] excludeFields;
+
public ExcelUtil(Class<T> clazz)
{
this.clazz = clazz;
+ }
+
+ /**
+ * 隐藏Excel中列属性
+ *
+ * @param fields 列属性名 示例[单个"name"/多个"id","name"]
+ * @throws Exception
+ */
+ public void hideColumn(String... fields)
+ {
+ this.excludeFields = fields;
}
public void init(List<T> list, String sheetName, String title, Type type)
@@ -177,6 +221,7 @@
createExcelField();
createWorkbook();
createTitle();
+ createSubHead();
}
/**
@@ -186,13 +231,48 @@
{
if (StringUtils.isNotEmpty(title))
{
+ subMergedFirstRowNum++;
+ subMergedLastRowNum++;
+ int titleLastCol = this.fields.size() - 1;
+ if (isSubList())
+ {
+ titleLastCol = titleLastCol + subFields.size() - 1;
+ }
Row titleRow = sheet.createRow(rownum == 0 ? rownum++ : 0);
titleRow.setHeightInPoints(30);
Cell titleCell = titleRow.createCell(0);
titleCell.setCellStyle(styles.get("title"));
titleCell.setCellValue(title);
- sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(),
- this.fields.size() - 1));
+ sheet.addMergedRegion(new CellRangeAddress(titleRow.getRowNum(), titleRow.getRowNum(), titleRow.getRowNum(), titleLastCol));
+ }
+ }
+
+ /**
+ * 创建对象的子列表名称
+ */
+ public void createSubHead()
+ {
+ if (isSubList())
+ {
+ subMergedFirstRowNum++;
+ subMergedLastRowNum++;
+ Row subRow = sheet.createRow(rownum);
+ int excelNum = 0;
+ for (Object[] objects : fields)
+ {
+ Excel attr = (Excel) objects[1];
+ Cell headCell1 = subRow.createCell(excelNum);
+ headCell1.setCellValue(attr.name());
+ headCell1.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
+ excelNum++;
+ }
+ int headFirstRow = excelNum - 1;
+ int headLastRow = headFirstRow + subFields.size() - 1;
+ if (headLastRow > headFirstRow)
+ {
+ sheet.addMergedRegion(new CellRangeAddress(rownum, rownum, headFirstRow, headLastRow));
+ }
+ rownum++;
}
}
@@ -315,7 +395,7 @@
String dateFormat = field.getAnnotation(Excel.class).dateFormat();
if (StringUtils.isNotEmpty(dateFormat))
{
- val = DateUtils.parseDateToStr(dateFormat, (Date) val);
+ val = parseDateToStr(dateFormat, val);
}
else
{
@@ -327,7 +407,7 @@
{
val = Convert.toInt(val);
}
- else if (Long.TYPE == fieldType || Long.class == fieldType)
+ else if ((Long.TYPE == fieldType || Long.class == fieldType) && StringUtils.isNumeric(Convert.toStr(val)))
{
val = Convert.toLong(val);
}
@@ -410,7 +490,7 @@
{
return exportExcel(list, sheetName, StringUtils.EMPTY);
}
-
+
/**
* 对list数据源将其里面的数据导入到excel表单
*
@@ -432,7 +512,6 @@
* @param list 导出数据集合
* @param sheetName 工作表的名称
* @return 结果
- * @throws IOException
*/
public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)
{
@@ -447,7 +526,6 @@
* @param sheetName 工作表的名称
* @param title 标题
* @return 结果
- * @throws IOException
*/
public void exportExcel(HttpServletResponse response, List<T> list, String sheetName, String title)
{
@@ -574,8 +652,20 @@
// 写入各个字段的列头名称
for (Object[] os : fields)
{
+ Field field = (Field) os[0];
Excel excel = (Excel) os[1];
- this.createCell(excel, row, column++);
+ if (Collection.class.isAssignableFrom(field.getType()))
+ {
+ for (Field subField : subFields)
+ {
+ Excel subExcel = subField.getAnnotation(Excel.class);
+ this.createHeadCell(subExcel, row, column++);
+ }
+ }
+ else
+ {
+ this.createHeadCell(excel, row, column++);
+ }
}
if (Type.EXPORT.equals(type))
{
@@ -591,21 +681,67 @@
* @param index 序号
* @param row 单元格行
*/
+ @SuppressWarnings("unchecked")
public void fillExcelData(int index, Row row)
{
int startNo = index * sheetSize;
int endNo = Math.min(startNo + sheetSize, list.size());
+ int rowNo = (1 + rownum) - startNo;
for (int i = startNo; i < endNo; i++)
{
- row = sheet.createRow(i + 1 + rownum - startNo);
+ rowNo = isSubList() ? (i > 1 ? rowNo + 1 : rowNo + i) : i + 1 + rownum - startNo;
+ row = sheet.createRow(rowNo);
// 得到导出对象.
T vo = (T) list.get(i);
+ Collection<?> subList = null;
+ if (isSubList())
+ {
+ if (isSubListValue(vo))
+ {
+ subList = getListCellValue(vo);
+ subMergedLastRowNum = subMergedLastRowNum + subList.size();
+ }
+ else
+ {
+ subMergedFirstRowNum++;
+ subMergedLastRowNum++;
+ }
+ }
int column = 0;
for (Object[] os : fields)
{
Field field = (Field) os[0];
Excel excel = (Excel) os[1];
- this.addCell(excel, row, vo, field, column++);
+ if (Collection.class.isAssignableFrom(field.getType()) && StringUtils.isNotNull(subList))
+ {
+ boolean subFirst = false;
+ for (Object obj : subList)
+ {
+ if (subFirst)
+ {
+ rowNo++;
+ row = sheet.createRow(rowNo);
+ }
+ List<Field> subFields = FieldUtils.getFieldsListWithAnnotation(obj.getClass(), Excel.class);
+ int subIndex = 0;
+ for (Field subField : subFields)
+ {
+ if (subField.isAnnotationPresent(Excel.class))
+ {
+ subField.setAccessible(true);
+ Excel attr = subField.getAnnotation(Excel.class);
+ this.addCell(attr, row, (T) obj, subField, column + subIndex);
+ }
+ subIndex++;
+ }
+ subFirst = true;
+ }
+ this.subMergedFirstRowNum = this.subMergedFirstRowNum + subList.size();
+ }
+ else
+ {
+ this.addCell(excel, row, vo, field, column++);
+ }
}
}
}
@@ -648,20 +784,6 @@
styles.put("data", style);
style = wb.createCellStyle();
- style.cloneStyleFrom(styles.get("data"));
- style.setAlignment(HorizontalAlignment.CENTER);
- style.setVerticalAlignment(VerticalAlignment.CENTER);
- style.setFillForegroundColor(IndexedColors.GREY_50_PERCENT.getIndex());
- style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
- Font headerFont = wb.createFont();
- headerFont.setFontName("Arial");
- headerFont.setFontHeightInPoints((short) 10);
- headerFont.setBold(true);
- headerFont.setColor(IndexedColors.WHITE.getIndex());
- style.setFont(headerFont);
- styles.put("header", style);
-
- style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
Font totalFont = wb.createFont();
@@ -670,35 +792,105 @@
style.setFont(totalFont);
styles.put("total", style);
- style = wb.createCellStyle();
- style.cloneStyleFrom(styles.get("data"));
- style.setAlignment(HorizontalAlignment.LEFT);
- styles.put("data1", style);
+ styles.putAll(annotationHeaderStyles(wb, styles));
- style = wb.createCellStyle();
- style.cloneStyleFrom(styles.get("data"));
- style.setAlignment(HorizontalAlignment.CENTER);
- styles.put("data2", style);
+ styles.putAll(annotationDataStyles(wb));
- style = wb.createCellStyle();
- style.cloneStyleFrom(styles.get("data"));
- style.setAlignment(HorizontalAlignment.RIGHT);
- styles.put("data3", style);
+ return styles;
+ }
+ /**
+ * 根据Excel注解创建表格头样式
+ *
+ * @param wb 工作薄对象
+ * @return 自定义样式列表
+ */
+ private Map<String, CellStyle> annotationHeaderStyles(Workbook wb, Map<String, CellStyle> styles)
+ {
+ Map<String, CellStyle> headerStyles = new HashMap<String, CellStyle>();
+ for (Object[] os : fields)
+ {
+ Excel excel = (Excel) os[1];
+ String key = StringUtils.format("header_{}_{}", excel.headerColor(), excel.headerBackgroundColor());
+ if (!headerStyles.containsKey(key))
+ {
+ CellStyle style = wb.createCellStyle();
+ style.cloneStyleFrom(styles.get("data"));
+ style.setAlignment(HorizontalAlignment.CENTER);
+ style.setVerticalAlignment(VerticalAlignment.CENTER);
+ style.setFillForegroundColor(excel.headerBackgroundColor().index);
+ style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+ Font headerFont = wb.createFont();
+ headerFont.setFontName("Arial");
+ headerFont.setFontHeightInPoints((short) 10);
+ headerFont.setBold(true);
+ headerFont.setColor(excel.headerColor().index);
+ style.setFont(headerFont);
+ headerStyles.put(key, style);
+ }
+ }
+ return headerStyles;
+ }
+
+ /**
+ * 根据Excel注解创建表格列样式
+ *
+ * @param wb 工作薄对象
+ * @return 自定义样式列表
+ */
+ private Map<String, CellStyle> annotationDataStyles(Workbook wb)
+ {
+ Map<String, CellStyle> styles = new HashMap<String, CellStyle>();
+ for (Object[] os : fields)
+ {
+ Excel excel = (Excel) os[1];
+ String key = StringUtils.format("data_{}_{}_{}", excel.align(), excel.color(), excel.backgroundColor());
+ if (!styles.containsKey(key))
+ {
+ CellStyle style = wb.createCellStyle();
+ style.setAlignment(excel.align());
+ style.setVerticalAlignment(VerticalAlignment.CENTER);
+ style.setBorderRight(BorderStyle.THIN);
+ style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
+ style.setBorderLeft(BorderStyle.THIN);
+ style.setLeftBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
+ style.setBorderTop(BorderStyle.THIN);
+ style.setTopBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
+ style.setBorderBottom(BorderStyle.THIN);
+ style.setBottomBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
+ style.setFillPattern(FillPatternType.SOLID_FOREGROUND);
+ style.setFillForegroundColor(excel.backgroundColor().getIndex());
+ Font dataFont = wb.createFont();
+ dataFont.setFontName("Arial");
+ dataFont.setFontHeightInPoints((short) 10);
+ dataFont.setColor(excel.color().index);
+ style.setFont(dataFont);
+ styles.put(key, style);
+ }
+ }
return styles;
}
/**
* 创建单元格
*/
- public Cell createCell(Excel attr, Row row, int column)
+ public Cell createHeadCell(Excel attr, Row row, int column)
{
// 创建列
Cell cell = row.createCell(column);
// 写入列信息
cell.setCellValue(attr.name());
setDataValidation(attr, row, column);
- cell.setCellStyle(styles.get("header"));
+ cell.setCellStyle(styles.get(StringUtils.format("header_{}_{}", attr.headerColor(), attr.headerBackgroundColor())));
+ if (isSubList())
+ {
+ // 填充默认样式，防止合并单元格样式失效
+ sheet.setDefaultColumnStyle(column, styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor())));
+ if (attr.needMerge())
+ {
+ sheet.addMergedRegion(new CellRangeAddress(rownum - 1, rownum, column, column));
+ }
+ }
return cell;
}
@@ -715,9 +907,9 @@
{
String cellValue = Convert.toStr(value);
// 对于任何以表达式触发字符 =-+@开头的单元格，直接使用tab字符作为前缀，防止CSV注入。
- if (StringUtils.containsAny(cellValue, FORMULA_STR))
+ if (StringUtils.startsWithAny(cellValue, FORMULA_STR))
{
- cellValue = StringUtils.replaceEach(cellValue, FORMULA_STR, new String[] { "\t=", "\t-", "\t+", "\t@" });
+ cellValue = RegExUtils.replaceFirst(cellValue, FORMULA_REGEX_STR, "\t$0");
}
cell.setCellValue(StringUtils.isNull(cellValue) ? attr.defaultValue() : cellValue + attr.suffix());
}
@@ -784,17 +976,10 @@
// 设置列宽
sheet.setColumnWidth(column, (int) ((attr.width() + 0.72) * 256));
}
- // 如果设置了提示信息则鼠标放上去提示.
- if (StringUtils.isNotEmpty(attr.prompt()))
+ if (StringUtils.isNotEmpty(attr.prompt()) || attr.combo().length > 0)
{
- // 这里默认设了2-101列提示.
- setXSSFPrompt(sheet, "", attr.prompt(), 1, 100, column, column);
- }
- // 如果设置了combo属性则本列只能选择不能输入
- if (attr.combo().length > 0)
- {
- // 这里默认设了2-101列只能选择不能输入.
- setXSSFValidation(sheet, attr.combo(), 1, 100, column, column);
+ // 提示信息或只能选择不能输入的列内容.
+ setPromptOrValidation(sheet, attr.combo(), attr.prompt(), 1, 100, column, column);
}
}
@@ -813,8 +998,12 @@
{
// 创建cell
cell = row.createCell(column);
- int align = attr.align().value();
- cell.setCellStyle(styles.get("data" + (align >= 1 && align <= 3 ? align : "")));
+ if (isSubListValue(vo) && getListCellValue(vo).size() > 1 && attr.needMerge())
+ {
+ CellRangeAddress cellAddress = new CellRangeAddress(subMergedFirstRowNum, subMergedLastRowNum, column, column);
+ sheet.addMergedRegion(cellAddress);
+ }
+ cell.setCellStyle(styles.get(StringUtils.format("data_{}_{}_{}", attr.align(), attr.color(), attr.backgroundColor())));
// 用于读取对象中的属性
Object value = getTargetValue(vo, field, attr);
@@ -824,7 +1013,7 @@
String dictType = attr.dictType();
if (StringUtils.isNotEmpty(dateFormat) && StringUtils.isNotNull(value))
{
- cell.setCellValue(DateUtils.parseDateToStr(dateFormat, (Date) value));
+ cell.setCellValue(parseDateToStr(dateFormat, value));
}
else if (StringUtils.isNotEmpty(readConverterExp) && StringUtils.isNotNull(value))
{
@@ -836,7 +1025,7 @@
}
else if (value instanceof BigDecimal && -1 != attr.scale())
{
- cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());
+ cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).doubleValue());
}
else if (!attr.handler().equals(ExcelHandlerAdapter.class))
{
@@ -858,48 +1047,29 @@
}
/**
- * 设置 POI XSSFSheet 单元格提示
+ * 设置 POI XSSFSheet 单元格提示或选择框
*
* @param sheet 表单
- * @param promptTitle 提示标题
+ * @param textlist 下拉框显示的内容
* @param promptContent 提示内容
* @param firstRow 开始行
* @param endRow 结束行
* @param firstCol 开始列
* @param endCol 结束列
*/
- public void setXSSFPrompt(Sheet sheet, String promptTitle, String promptContent, int firstRow, int endRow,
+ public void setPromptOrValidation(Sheet sheet, String[] textlist, String promptContent, int firstRow, int endRow,
int firstCol, int endCol)
{
DataValidationHelper helper = sheet.getDataValidationHelper();
- DataValidationConstraint constraint = helper.createCustomConstraint("DD1");
+ DataValidationConstraint constraint = textlist.length > 0 ? helper.createExplicitListConstraint(textlist) : helper.createCustomConstraint("DD1");
CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
DataValidation dataValidation = helper.createValidation(constraint, regions);
- dataValidation.createPromptBox(promptTitle, promptContent);
- dataValidation.setShowPromptBox(true);
- sheet.addValidationData(dataValidation);
- }
-
- /**
- * 设置某些列的值只能输入预制的数据,显示下拉框.
- *
- * @param sheet 要设置的sheet.
- * @param textlist 下拉框显示的内容
- * @param firstRow 开始行
- * @param endRow 结束行
- * @param firstCol 开始列
- * @param endCol 结束列
- * @return 设置好的sheet.
- */
- public void setXSSFValidation(Sheet sheet, String[] textlist, int firstRow, int endRow, int firstCol, int endCol)
- {
- DataValidationHelper helper = sheet.getDataValidationHelper();
- // 加载下拉列表内容
- DataValidationConstraint constraint = helper.createExplicitListConstraint(textlist);
- // 设置数据有效性加载在哪个单元格上,四个参数分别是：起始行、终止行、起始列、终止列
- CellRangeAddressList regions = new CellRangeAddressList(firstRow, endRow, firstCol, endCol);
- // 数据有效性对象
- DataValidation dataValidation = helper.createValidation(constraint, regions);
+ if (StringUtils.isNotEmpty(promptContent))
+ {
+ // 如果设置了提示信息则鼠标放上去提示
+ dataValidation.createPromptBox("", promptContent);
+ dataValidation.setShowPromptBox(true);
+ }
// 处理Excel兼容性问题
if (dataValidation instanceof XSSFDataValidation)
{
@@ -910,7 +1080,6 @@
{
dataValidation.setSuppressDropDownArrow(false);
}
-
sheet.addValidationData(dataValidation);
}
@@ -929,7 +1098,7 @@
for (String item : convertSource)
{
String[] itemArray = item.split("=");
- if (StringUtils.containsAny(separator, propertyValue))
+ if (StringUtils.containsAny(propertyValue, separator))
{
for (String value : propertyValue.split(separator))
{
@@ -966,7 +1135,7 @@
for (String item : convertSource)
{
String[] itemArray = item.split("=");
- if (StringUtils.containsAny(separator, propertyValue))
+ if (StringUtils.containsAny(propertyValue, separator))
{
for (String value : propertyValue.split(separator))
{
@@ -1179,28 +1348,38 @@
tempFields.addAll(Arrays.asList(clazz.getDeclaredFields()));
for (Field field : tempFields)
{
- // 单注解
- if (field.isAnnotationPresent(Excel.class))
+ if (!ArrayUtils.contains(this.excludeFields, field.getName()))
{
- Excel attr = field.getAnnotation(Excel.class);
- if (attr != null && (attr.type() == Type.ALL || attr.type() == type))
+ // 单注解
+ if (field.isAnnotationPresent(Excel.class))
{
- field.setAccessible(true);
- fields.add(new Object[] { field, attr });
- }
- }
-
- // 多注解
- if (field.isAnnotationPresent(Excels.class))
- {
- Excels attrs = field.getAnnotation(Excels.class);
- Excel[] excels = attrs.value();
- for (Excel attr : excels)
- {
+ Excel attr = field.getAnnotation(Excel.class);
if (attr != null && (attr.type() == Type.ALL || attr.type() == type))
{
field.setAccessible(true);
fields.add(new Object[] { field, attr });
+ }
+ if (Collection.class.isAssignableFrom(field.getType()))
+ {
+ subMethod = getSubMethod(field.getName(), clazz);
+ ParameterizedType pt = (ParameterizedType) field.getGenericType();
+ Class<?> subClass = (Class<?>) pt.getActualTypeArguments()[0];
+ this.subFields = FieldUtils.getFieldsListWithAnnotation(subClass, Excel.class);
+ }
+ }
+
+ // 多注解
+ if (field.isAnnotationPresent(Excels.class))
+ {
+ Excels attrs = field.getAnnotation(Excels.class);
+ Excel[] excels = attrs.value();
+ for (Excel attr : excels)
+ {
+ if (attr != null && (attr.type() == Type.ALL || attr.type() == type))
+ {
+ field.setAccessible(true);
+ fields.add(new Object[] { field, attr });
+ }
}
}
}
@@ -1397,4 +1576,94 @@
}
return sheetIndexPicMap;
}
+
+ /**
+ * 格式化不同类型的日期对象
+ *
+ * @param dateFormat 日期格式
+ * @param val 被格式化的日期对象
+ * @return 格式化后的日期字符
+ */
+ public String parseDateToStr(String dateFormat, Object val)
+ {
+ if (val == null)
+ {
+ return "";
+ }
+ String str;
+ if (val instanceof Date)
+ {
+ str = DateUtils.parseDateToStr(dateFormat, (Date) val);
+ }
+ else if (val instanceof LocalDateTime)
+ {
+ str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDateTime) val));
+ }
+ else if (val instanceof LocalDate)
+ {
+ str = DateUtils.parseDateToStr(dateFormat, DateUtils.toDate((LocalDate) val));
+ }
+ else
+ {
+ str = val.toString();
+ }
+ return str;
+ }
+
+ /**
+ * 是否有对象的子列表
+ */
+ public boolean isSubList()
+ {
+ return StringUtils.isNotNull(subFields) && subFields.size() > 0;
+ }
+
+ /**
+ * 是否有对象的子列表，集合不为空
+ */
+ public boolean isSubListValue(T vo)
+ {
+ return StringUtils.isNotNull(subFields) && subFields.size() > 0 && StringUtils.isNotNull(getListCellValue(vo)) && getListCellValue(vo).size() > 0;
+ }
+
+ /**
+ * 获取集合的值
+ */
+ public Collection<?> getListCellValue(Object obj)
+ {
+ Object value;
+ try
+ {
+ value = subMethod.invoke(obj, new Object[] {});
+ }
+ catch (Exception e)
+ {
+ return new ArrayList<Object>();
+ }
+ return (Collection<?>) value;
+ }
+
+ /**
+ * 获取对象的子列表方法
+ *
+ * @param name 名称
+ * @param pojoClass 类对象
+ * @return 子列表方法
+ */
+ public Method getSubMethod(String name, Class<?> pojoClass)
+ {
+ StringBuffer getMethodName = new StringBuffer("get");
+ getMethodName.append(name.substring(0, 1).toUpperCase());
+ getMethodName.append(name.substring(1));
+ Method method = null;
+ try
+ {
+ method = pojoClass.getMethod(getMethodName.toString(), new Class[] {});
+ }
+ catch (Exception e)
+ {
+ log.error("获取对象异常{}", e.getMessage());
+ }
+ return method;
+ }
}
--
Gitblit v1.9.2