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@ -4,6 +4,7 @@ import java.io.IOException;
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import java.io.InputStream;
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import java.io.OutputStream;
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import java.lang.reflect.Field;
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import java.lang.reflect.Method;
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import java.math.BigDecimal;
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import java.text.DecimalFormat;
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import java.util.ArrayList;
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@ -35,6 +36,7 @@ import org.apache.poi.ss.usermodel.Sheet;
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import org.apache.poi.ss.usermodel.VerticalAlignment;
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import org.apache.poi.ss.usermodel.Workbook;
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import org.apache.poi.ss.usermodel.WorkbookFactory;
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import org.apache.poi.ss.util.CellRangeAddress;
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import org.apache.poi.ss.util.CellRangeAddressList;
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import org.apache.poi.util.IOUtils;
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import org.apache.poi.xssf.streaming.SXSSFWorkbook;
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@ -102,6 +104,16 @@ public class ExcelUtil<T>
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*/
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private List<Object[]> fields;
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/**
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* 当前行号
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*/
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private int rownum;
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/**
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* 标题
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*/
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private String title;
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/**
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* 最大高度
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*/
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@ -127,7 +139,7 @@ public class ExcelUtil<T>
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this.clazz = clazz;
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}
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public void init(List<T> list, String sheetName, Type type)
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public void init(List<T> list, String sheetName, String title, Type type)
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{
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if (list == null)
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{
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@ -136,8 +148,27 @@ public class ExcelUtil<T>
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this.list = list;
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this.sheetName = sheetName;
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this.type = type;
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this.title = title;
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createExcelField();
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createWorkbook();
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createTitle();
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}
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/**
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* 创建excel第一行标题
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*/
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public void createTitle()
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{
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if (StringUtils.isNotEmpty(title))
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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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}
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}
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/**
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@ -148,33 +179,36 @@ public class ExcelUtil<T>
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*/
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public List<T> importExcel(InputStream is) throws Exception
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{
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return importExcel(StringUtils.EMPTY, is);
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return importExcel(is, 0);
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}
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/**
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* 对excel表单默认第一个索引名转换成list
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*
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* @param is 输入流
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* @param titleNum 标题占用行数
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* @return 转换后集合
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*/
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public List<T> importExcel(InputStream is, int titleNum) throws Exception
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{
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return importExcel(StringUtils.EMPTY, is, titleNum);
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}
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/**
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* 对excel表单指定表格索引名转换成list
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*
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* @param sheetName 表格索引名
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* @param titleNum 标题占用行数
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* @param is 输入流
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* @return 转换后集合
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*/
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public List<T> importExcel(String sheetName, InputStream is) throws Exception
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public List<T> importExcel(String sheetName, InputStream is, int titleNum) throws Exception
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{
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this.type = Type.IMPORT;
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this.wb = WorkbookFactory.create(is);
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List<T> list = new ArrayList<T>();
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Sheet sheet = null;
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if (StringUtils.isNotEmpty(sheetName))
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{
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// 如果指定sheet名,则取指定sheet中的内容.
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sheet = wb.getSheet(sheetName);
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}
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else
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{
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// 如果传入的sheet名不存在则默认指向第1个sheet.
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sheet = wb.getSheetAt(0);
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}
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// 如果指定sheet名,则取指定sheet中的内容 否则默认指向第1个sheet
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Sheet sheet = StringUtils.isNotEmpty(sheetName) ? wb.getSheet(sheetName) : wb.getSheetAt(0);
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if (sheet == null)
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{
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throw new IOException("文件sheet不存在");
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@ -188,7 +222,7 @@ public class ExcelUtil<T>
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// 定义一个map用于存放excel列的序号和field.
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Map<String, Integer> cellMap = new HashMap<String, Integer>();
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// 获取表头
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Row heard = sheet.getRow(0);
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Row heard = sheet.getRow(titleNum);
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for (int i = 0; i < heard.getPhysicalNumberOfCells(); i++)
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{
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Cell cell = heard.getCell(i);
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@ -221,7 +255,7 @@ public class ExcelUtil<T>
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}
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}
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}
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for (int i = 1; i <= rows; i++)
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for (int i = titleNum + 1; i <= rows; i++)
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{
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// 从第2行开始取数据,默认第一行是表头.
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Row row = sheet.getRow(i);
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@ -308,6 +342,10 @@ public class ExcelUtil<T>
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{
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val = reverseByExp(Convert.toStr(val), attr.readConverterExp(), attr.separator());
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}
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else if (!attr.handler().equals(ExcelHandlerAdapter.class))
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{
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val = dataFormatHandlerAdapter(val, attr);
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}
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ReflectUtils.invokeSetter(entity, propertyName, val);
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}
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}
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@ -326,14 +364,35 @@ public class ExcelUtil<T>
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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) throws IOException
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public void exportExcel(HttpServletResponse response, List<T> list, String sheetName)throws IOException
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{
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exportExcel(response, list, sheetName, StringUtils.EMPTY);
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}
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/**
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* 对list数据源将其里面的数据导入到excel表单
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*
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* @param response 返回数据
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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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* @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) throws IOException
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{
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response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
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response.setCharacterEncoding("utf-8");
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this.init(list, sheetName, Type.EXPORT);
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this.init(list, sheetName, title, Type.EXPORT);
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exportExcel(response.getOutputStream());
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}
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/**
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* 对list数据源将其里面的数据导入到excel表单
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*
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* @param sheetName 工作表的名称
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* @return 结果
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*/
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/**
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* 对list数据源将其里面的数据导入到excel表单
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*
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@ -341,10 +400,22 @@ public class ExcelUtil<T>
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* @return 结果
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*/
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public void importTemplateExcel(HttpServletResponse response, String sheetName) throws IOException
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{
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importTemplateExcel(response, sheetName);
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}
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/**
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* 对list数据源将其里面的数据导入到excel表单
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*
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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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*/
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public void importTemplateExcel(HttpServletResponse response, String sheetName, String title) throws IOException
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{
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response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
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response.setCharacterEncoding("utf-8");
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this.init(null, sheetName, Type.IMPORT);
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this.init(null, sheetName, title, Type.IMPORT);
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exportExcel(response.getOutputStream());
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}
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@ -377,13 +448,13 @@ public class ExcelUtil<T>
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public void writeSheet()
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{
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// 取出一共有多少个sheet.
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double sheetNo = Math.ceil(list.size() / sheetSize);
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for (int index = 0; index <= sheetNo; index++)
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int sheetNo = Math.max(1, (int) Math.ceil(list.size() * 1.0 / sheetSize));
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for (int index = 0; index < sheetNo; index++)
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{
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createSheet(sheetNo, index);
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// 产生一行
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Row row = sheet.createRow(0);
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Row row = sheet.createRow(rownum);
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int column = 0;
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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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@ -411,7 +482,7 @@ public class ExcelUtil<T>
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int endNo = Math.min(startNo + sheetSize, list.size());
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for (int i = startNo; i < endNo; i++)
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{
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row = sheet.createRow(i + 1 - startNo);
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row = sheet.createRow(i + 1 + rownum - startNo);
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// 得到导出对象.
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T vo = (T) list.get(i);
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int column = 0;
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@ -439,6 +510,16 @@ public class ExcelUtil<T>
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CellStyle style = wb.createCellStyle();
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style.setAlignment(HorizontalAlignment.CENTER);
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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Font titleFont = wb.createFont();
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titleFont.setFontName("Arial");
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titleFont.setFontHeightInPoints((short) 16);
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titleFont.setBold(true);
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style.setFont(titleFont);
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styles.put("title", style);
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style = wb.createCellStyle();
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style.setAlignment(HorizontalAlignment.CENTER);
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style.setVerticalAlignment(VerticalAlignment.CENTER);
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style.setBorderRight(BorderStyle.THIN);
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style.setRightBorderColor(IndexedColors.GREY_50_PERCENT.getIndex());
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style.setBorderLeft(BorderStyle.THIN);
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@ -633,6 +714,10 @@ public class ExcelUtil<T>
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{
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cell.setCellValue((((BigDecimal) value).setScale(attr.scale(), attr.roundingMode())).toString());
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}
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else if (!attr.handler().equals(ExcelHandlerAdapter.class))
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{
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cell.setCellValue(dataFormatHandlerAdapter(value, attr));
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}
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else
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{
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// 设置列类型
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@ -779,6 +864,28 @@ public class ExcelUtil<T>
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return StringUtils.stripEnd(propertyString.toString(), separator);
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}
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/**
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* 数据处理器
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*
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* @param value 数据值
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* @param excel 数据注解
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* @return
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*/
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public String dataFormatHandlerAdapter(Object value, Excel excel)
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{
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try
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{
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Object instance = excel.handler().newInstance();
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Method formatMethod = excel.handler().getMethod("format", new Class[] { Object.class, String[].class });
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value = formatMethod.invoke(instance, value, excel.args());
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}
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catch (Exception e)
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{
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log.error("不能格式化数据 " + excel.handler(), e.getMessage());
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}
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return Convert.toStr(value);
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}
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/**
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* 合计统计信息
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*/
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@ -809,10 +916,9 @@ public class ExcelUtil<T>
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{
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if (statistics.size() > 0)
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{
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Cell cell = null;
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Row row = sheet.createRow(sheet.getLastRowNum() + 1);
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Set<Integer> keys = statistics.keySet();
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cell = row.createCell(0);
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Cell cell = row.createCell(0);
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cell.setCellStyle(styles.get("total"));
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cell.setCellValue("合计");
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@ -940,6 +1046,9 @@ public class ExcelUtil<T>
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public void createWorkbook()
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{
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this.wb = new SXSSFWorkbook(500);
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this.sheet = wb.createSheet();
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wb.setSheetName(0, sheetName);
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this.styles = createStyles(wb);
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}
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/**
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@ -948,17 +1057,13 @@ public class ExcelUtil<T>
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* @param sheetNo sheet数量
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* @param index 序号
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*/
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public void createSheet(double sheetNo, int index)
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public void createSheet(int sheetNo, int index)
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{
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this.sheet = wb.createSheet();
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this.styles = createStyles(wb);
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// 设置工作表的名称.
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if (sheetNo == 0)
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{
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wb.setSheetName(index, sheetName);
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}
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else
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if (sheetNo > 1 && index > 0)
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{
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this.sheet = wb.createSheet();
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this.createTitle();
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wb.setSheetName(index, sheetName + index);
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}
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}
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caohong
4 years ago