上一篇講解了一下如何讀取excel，那在這篇就講一下如何去寫文件吧！?同樣是用poi類工具去實現的。

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Java代碼??

package?com.common.util;??

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import?java.util.List;??

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import?org.apache.poi.hssf.usermodel.HSSFWorkbook;??

import?org.apache.poi.ss.usermodel.Cell;??

import?org.apache.poi.ss.usermodel.CellStyle;??

import?org.apache.poi.ss.usermodel.Font;??

import?org.apache.poi.ss.usermodel.Row;??

import?org.apache.poi.ss.usermodel.Sheet;??

import?org.apache.poi.ss.usermodel.Workbook;??

import?org.apache.poi.ss.util.CellRangeAddress;??

import?org.apache.poi.xssf.usermodel.XSSFCellStyle;??

??

public?class?ExcelUtil{??

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????public?static?HSSFWorkbook?exportExcelForStudent(List?studentList??

)?{?????//創建excel文件對象??

????????HSSFWorkbook?wb?=?new?HSSFWorkbook();??

????????//創建一個張表??

????????Sheet?sheet?=?wb.createSheet();??

????????//創建第一行??

????????Row?row?=?sheet.createRow(0);??

???????????????????//創建第二行??

????????Row?row1?=?sheet.createRow(1);??

????????//?文件頭字體??

????????Font?font0?=?createFonts(wb,?Font.BOLDWEIGHT_BOLD,?"宋體",?false,??

????????????????(short)?200);??

????????Font?font1?=?createFonts(wb,?Font.BOLDWEIGHT_NORMAL,?"宋體",?false,??

????????????????(short)?200);??

????????//?合并第一行的單元格??

????????sheet.addMergedRegion(new?CellRangeAddress(0,?0,?0,?1));??

????????//設置第一列的文字??

????????createCell(wb,?row,?0,?“總數”,?font0);??

????????//合并第一行的2列以后到8列（不包含第二列）??

????????sheet.addMergedRegion(new?CellRangeAddress(0,?0,?2,?8));??

????????//設置第二列的文字??

????????createCell(wb,?row,?2,?“基本信息”,?font0);??

????????//給第二行添加文本??

????????createCell(wb,?row1,?0,?"序號",?font1);??

????????createCell(wb,?row1,?1,?"版本",?font1);??

????????createCell(wb,?row1,?2,?"姓名",?font1);??

????????createCell(wb,?row1,?3,?"性別",?font1);??

????????createCell(wb,?row1,?4,?"年齡",?font1);??

????????createCell(wb,?row1,?5,?"年級",?font1);??

????????createCell(wb,?row1,?6,?"學校",?font1);??

????????createCell(wb,?row1,?7,?"父母名稱",?font1);??

????????createCell(wb,?row1,?8,?"籍貫",?font1);??

????????createCell(wb,?row1,?9,?"聯系方式",?font1);??

????????//第三行表示??

????????int?l?=?2;??

????????//這里將學員的信心存入到表格中??????????

????????for?(int?i?=?0;?i?<?studentList.size();?i++)?{??

????????????//創建一行??

????????????Row?rowData?=?sheet.createRow(l++);??

????????????Student?stu?=?studentList.get(i);??

????????????createCell(wb,?rowData,?0,?String.valueOf(i?+?1),?font1);??

????????????createCell(wb,?rowData,?1,?"3.0",?font1);??

????????????createCell(wb,?rowData,?2,?stu.getName(),?font1);??

????????????createCell(wb,?rowData,?3,?stu.getStudentsex(),?font1);??

?????????????createCell(wb,?rowData,?4,?stu.getStudentage(),?font1);??

????????????createCell(wb,?rowData,?5,?stu.getGrade().getName(),?font1);??

????????????createCell(wb,?rowData,?6,?stu.getStudentschool(),?font1);??

????????????createCell(wb,?rowData,?7,?stu.getparents(),?font1);???

????????????createCell(wb,?rowData,?8,?stu.getStudentprovince()+stu.getStudentcity()+stu.getStudentarea(),?font1);??

????????????createCell(wb,?rowData,?9,?stu.getContact(),?font1);??

??????

????????}??

????????return?wb;??

????}?????

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/**?

?????*?創建單元格并設置樣式,值?

?????*??

?????*?@param?wb?

?????*?@param?row?

?????*?@param?column?

?????*?@param?

?????*?@param?

?????*?@param?value?

?????*/??

????public?static?void?createCell(Workbook?wb,?Row?row,?int?column,??

????????????String?value,?Font?font)?{??

????????Cell?cell?=?row.createCell(column);??

????????cell.setCellValue(value);??

????????CellStyle?cellStyle?=?wb.createCellStyle();??

????????cellStyle.setAlignment(XSSFCellStyle.ALIGN_CENTER);??

????????cellStyle.setVerticalAlignment(XSSFCellStyle.VERTICAL_BOTTOM);??

????????cellStyle.setFont(font);??

????????cell.setCellStyle(cellStyle);??

????}??

??

????/**?

?????*?設置字體?

?????*??

?????*?@param?wb?

?????*?@return?

?????*/??

????public?static?Font?createFonts(Workbook?wb,?short?bold,?String?fontName,??

????????????boolean?isItalic,?short?hight)?{??

????????Font?font?=?wb.createFont();??

????????font.setFontName(fontName);??

????????font.setBoldweight(bold);??

????????font.setItalic(isItalic);??

????????font.setFontHeight(hight);??

????????return?font;??

????}??

??

????/**?

?????*?判斷是否為數字?

?????*??

?????*?@param?str?

?????*?@return?

?????*/??

????public?static?boolean?isNumeric(String?str)?{??

????????if?(str?==?null?||?"".equals(str.trim())?||?str.length()?>?10)??

????????????return?false;??

????????Pattern?pattern?=?Pattern.compile("^0|[1-9]\\d*(\\.\\d+)?$");??

????????return?pattern.matcher(str).matches();??

????}??

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}??

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總結

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