Export an excel table

Export an excel table

Prerequisites: import the jar package

 1 <dependency> 2     <groupId>org.apache.poi</groupId> 3     <artifactId>poi-ooxml</artifactId> 4     <version>3.10-FINAL</version> 5 </dependency> 6 <dependency> 7     <groupId>org.apache.poi</groupId> 8     <artifactId>poi</artifactId> 9     <version>3.17</version>10 </dependency>11 <dependency>12     <groupId>junit</groupId>13     <artifactId>junit</artifactId>14     <version>4.11</version>15     <scope>test</scope>16 </dependency>

Set the fields in the database table to the table header, and write the corresponding records to the excel file at a time.

Background code:

Import java. io. file; import java. io. fileOutputStream; import java. io. IOException; import java. io. outputStream; import java. util. arrayList; import java. util. hashMap; import java. util. list; import java. util. map; import org. apache. poi. hssf. usermodel. HSSFCell; import org. apache. poi. hssf. usermodel. HSSFCellStyle; import org. apache. poi. hssf. usermodel. HSSFFont; import org. apache. poi. hssf. usermodel. HSSFPatternFormatti Ng; import org. apache. poi. hssf. usermodel. HSSFRow; import org. apache. poi. hssf. usermodel. HSSFSheet; import org. apache. poi. hssf. usermodel. HSSFWorkbook; import org. apache. poi. hssf. util. cellRangeAddress; import org. apache. poi. hssf. util. HSSFColor; import org. junit. test;/*** export excel * @ author hewangtong **/@ SuppressWarnings ("deprecation ") public class ExportExcel {/*** export excel * @ param out where to output * @ param st Udents student information * @ param title content title in excel * @ param headers header label in the student information table */public void exportExcel (OutputStream out, List <Map <String, Object> students, string title, String [] headers) {// 1. create a workbook. HSSFWorkbook workbook = new HSSFWorkbook (); // 2. create a sheet page HSSFSheet sheet = workbook. createSheet ("student-info"); // 3. set the column width of the sheet page. setdefacolumcolumnwidth (30); // 4. solve the problem: // set the title style HSSFCellStyle titleCellStyle = workbook. createCellStyle (); // create the title style titleCellStyle. setAlignment (HSSFCellStyle. ALIGN_CENTER); // center the title. // set the title Font HSSFFont titleFont = workbook. createFont (); titleFont. setBoldweight (HSSFFont. BOLDWEIGHT_BOLD); titleFont. setFontHeight (short) 8); titleFont. setFontHeightInPoints (short) 16); titleFont. setFontName (""); titleFont. setCharSet (HSSFFont. DEFAULT_CHARSET); // implant the font style into the titleCellStyle. setFont (titleFont); // set the title Position HSSFRow titleRow = sheet. createRow (0); // The first line HSSFCell titleCell = titleRow. createCell (0); // place the title value and style in the corresponding position titleCell. setCellValue (title); titleCell. setCellStyle (titleCe LlStyle); // merge cell CellRangeAddress cra = new CellRangeAddress (0, 0, 0, 3); sheet. addMergedRegion (cra); // 5. solve the Problem of table Header/student statistical table header HSSFRow headerRow = sheet. createRow (1); // HSSFCell headerCell = null in the second row; // set the Header style HSSFCellStyle headerStyle = workbook. createCellStyle (); headerStyle. setAlignment (HSSFCellStyle. ALIGN_CENTER); headerStyle. setBorderBottom (HSSFCellStyle. BORDER_THIN); // set the border headerStyle. setBorder Left (HSSFCellStyle. BORDER_THIN); headerStyle. setBorderRight (HSSFCellStyle. BORDER_THIN); headerStyle. setBorderTop (HSSFCellStyle. BORDER_THIN); // The following two types must be used with headerStyle. setFillForegroundColor (HSSFColor. ORANGE. index); // fill in the foreground color headerStyle. setFillPattern (HSSFPatternFormatting. SOLID_FOREGROUND); // fill mode // set the header font HSSFFont headerFont = workbook. createFont (); headerFont. setBoldweight (HSSFFont. BOLDWEIGHT_NORM AL); headerFont. setCharSet (HSSFFont. DEFAULT_CHARSET); headerFont. setColor (HSSFColor. GREEN. index); headerFont. setFontName (""); headerFont. setFontHeight (short) 6); headerFont. setFontHeightInPoints (short) 12); headerStyle. setFont (headerFont); for (int I = 0; I 
The effect is as follows:

Reference: http://blog.csdn.net/he140622hwt/article/details/78467457