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Excel注解支持导入导出标题信息

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RuoYi 2021-09-26 09:03:01 +08:00
parent 7479ff4b06
commit 30c89b33fe
1 changed files with 126 additions and 22 deletions
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148
ruoyi-common/src/main/java/com/ruoyi/common/utils/poi/ExcelUtil.java
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@ -47,6 +47,7 @@ import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.ss.util.CellRangeAddressList;
import org.apache.poi.util.IOUtils;
import org.apache.poi.xssf.streaming.SXSSFWorkbook;
@ -125,6 +126,16 @@ public class ExcelUtil<T>
*/
private List<Object[]> fields;
/**
* 当前行号
*/
private int rownum;
/**
* 标题
*/
private String title;
/**
* 最大高度
*/
@ -150,7 +161,7 @@ public class ExcelUtil<T>
this.clazz = clazz;
}
public void init(List<T> list, String sheetName, Type type)
public void init(List<T> list, String sheetName, String title, Type type)
{
if (list == null)
{
@ -159,8 +170,27 @@ public class ExcelUtil<T>
this.list = list;
this.sheetName = sheetName;
this.type = type;
this.title = title;
createExcelField();
createWorkbook();
createTitle();
}
/**
* 创建excel第一行标题
*/
public void createTitle()
{
if (StringUtils.isNotEmpty(title))
{
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));
}
}
/**
@ -171,17 +201,30 @@ public class ExcelUtil<T>
*/
public List<T> importExcel(InputStream is) throws Exception
{
return importExcel(StringUtils.EMPTY, is);
return importExcel(is, 0);
}
/**
* 对excel表单默认第一个索引名转换成list
*
* @param is 输入流
* @param titleNum 标题占用行数
* @return 转换后集合
*/
public List<T> importExcel(InputStream is, int titleNum) throws Exception
{
return importExcel(StringUtils.EMPTY, is, titleNum);
}
/**
* 对excel表单指定表格索引名转换成list
*
* @param sheetName 表格索引名
* @param titleNum 标题占用行数
* @param is 输入流
* @return 转换后集合
*/
public List<T> importExcel(String sheetName, InputStream is) throws Exception
public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception
{
this.type = Type.IMPORT;
this.wb = WorkbookFactory.create(is);
@ -210,7 +253,7 @@ public class ExcelUtil<T>
// 定义一个map用于存放excel列的序号和field.
Map<String, Integer> cellMap = new HashMap<String, Integer>();
// 获取表头
Row heard = sheet.getRow(0);
Row heard = sheet.getRow(titleNum);
for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++)
{
Cell cell = heard.getCell(i);
@ -243,7 +286,7 @@ public class ExcelUtil<T>
}
}
}
for (int i = 1; i <= rows; i++)
for (int i = titleNum + 1; i <= rows; i++)
{
// 从第2行开始取数据,默认第一行是表头.
Row row = sheet.getRow(i);
@ -369,7 +412,20 @@ public class ExcelUtil<T>
*/
public AjaxResult exportExcel(List<T> list, String sheetName)
{
this.init(list, sheetName, Type.EXPORT);
return exportExcel(list, sheetName, StringUtils.EMPTY);
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @param list 导出数据集合
* @param sheetName 工作表的名称
* @param title 标题
* @return 结果
*/
public AjaxResult exportExcel(List<T> list, String sheetName, String title)
{
this.init(list, sheetName, title, Type.EXPORT);
return exportExcel();
}
@ -382,11 +438,26 @@ public class ExcelUtil<T>
* @return 结果
* @throws IOException
*/
public void exportExcel(HttpServletResponse response, List<T> list, String sheetName) throws IOException
public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)throws IOException
{
exportExcel(response, list, sheetName, StringUtils.EMPTY);
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @param response 返回数据
* @param list 导出数据集合
* @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) throws IOException
{
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
this.init(list, sheetName, Type.EXPORT);
this.init(list, sheetName, title, Type.EXPORT);
exportExcel(response.getOutputStream());
}
@ -398,7 +469,19 @@ public class ExcelUtil<T>
*/
public AjaxResult importTemplateExcel(String sheetName)
{
this.init(null, sheetName, Type.IMPORT);
return importTemplateExcel(sheetName, StringUtils.EMPTY);
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @param sheetName 工作表的名称
* @param title 标题
* @return 结果
*/
public AjaxResult importTemplateExcel(String sheetName, String title)
{
this.init(null, sheetName, title, Type.IMPORT);
return exportExcel();
}
@ -409,10 +492,22 @@ public class ExcelUtil<T>
* @return 结果
*/
public void importTemplateExcel(HttpServletResponse response, String sheetName) throws IOException
{
importTemplateExcel(response, sheetName);
}
/**
* 对list数据源将其里面的数据导入到excel表单
*
* @param sheetName 工作表的名称
* @param title 标题
* @return 结果
*/
public void importTemplateExcel(HttpServletResponse response, String sheetName, String title) throws IOException
{
response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
response.setCharacterEncoding("utf-8");
this.init(null, sheetName, Type.IMPORT);
this.init(null, sheetName, title, Type.IMPORT);
exportExcel(response.getOutputStream());
}
@ -473,13 +568,13 @@ public class ExcelUtil<T>
public void writeSheet()
{
// 取出一共有多少个sheet.
double sheetNo = Math.ceil(list.size() / sheetSize);
for (int index = 0; index <= sheetNo; index++)
int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize));
for (int index = 0; index < sheetNo; index++)
{
createSheet(sheetNo, index);
// 产生一行
Row row = sheet.createRow(0);
Row row = sheet.createRow(rownum);
int column = 0;
// 写入各个字段的列头名称
for (Object[] os : fields)
@ -507,7 +602,7 @@ public class ExcelUtil<T>
int endNo = Math.min(startNo + sheetSize, list.size());
for (int i = startNo; i < endNo; i++)
{
row = sheet.createRow(i + 1 - startNo);
row = sheet.createRow(i + 1 + rownum - startNo);
// 得到导出对象.
T vo = (T) list.get(i);
int column = 0;
@ -535,6 +630,16 @@ public class ExcelUtil<T>
CellStyle style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
Font titleFont = wb.createFont();
titleFont.setFontName("Arial");
titleFont.setFontHeightInPoints((short) 16);
titleFont.setBold(true);
style.setFont(titleFont);
styles.put("title", style);
style = wb.createCellStyle();
style.setAlignment(HorizontalAlignment.CENTER);
style.setVerticalAlignment(VerticalAlignment.CENTER);
style.setBorderRight(BorderStyle.THIN);
style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
style.setBorderLeft(BorderStyle.THIN);
@ -1117,6 +1222,9 @@ public class ExcelUtil<T>
public void createWorkbook()
{
this.wb = new SXSSFWorkbook(500);
this.sheet = wb.createSheet();
wb.setSheetName(0, sheetName);
this.styles = createStyles(wb);
}
/**
@ -1125,17 +1233,13 @@ public class ExcelUtil<T>
* @param sheetNo sheet数量
* @param index 序号
*/
public void createSheet(double sheetNo, int index)
public void createSheet(int sheetNo, int index)
{
this.sheet = wb.createSheet();
this.styles = createStyles(wb);
// 设置工作表的名称.
if (sheetNo == 0)
{
wb.setSheetName(index, sheetName);
}
else
if (sheetNo > 1 && index > 0)
{
this.sheet = wb.createSheet();
this.createTitle();
wb.setSheetName(index, sheetName + index);
}
}