Java實現POI導出Excel
阿新 • • 發佈:2019-01-30
conf views ext uil 格式 java實現 attribute port trac
Web框架為Struts2,所用jar包如下:
ExportExcelAction.java
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
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.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.hssf.util.HSSFColor;
import org.apache.poi.ss.util.Region;
public class ExportExcelAction {
private InputStream inputStream;
public String export() {
try {
HSSFWorkbook wb = new HSSFWorkbook();
HSSFSheet sheet = wb.createSheet("new sheet");
sheet.setDefaultColumnWidth(20); // 默認列寬
HSSFFont font = wb.createFont();
font.setFontName("黑體");
font.setFontHeightInPoints((short) 13);// 設置字體大小
font.setColor(HSSFColor.WHITE.index); //字體顏色
HSSFCellStyle headStyle = wb.createCellStyle(); // 頭部樣式
headStyle.setAlignment(HSSFCellStyle.ALIGN_CENTER);// 水平居中
headStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); // 下邊框
headStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN);// 左邊框
headStyle.setBorderTop(HSSFCellStyle.BORDER_THIN);// 上邊框
headStyle.setBorderRight(HSSFCellStyle.BORDER_THIN);// 右邊框
headStyle.setFillForegroundColor(HSSFColor.TEAL.index);// 設置背景色
headStyle.setFillPattern(HSSFCellStyle.SOLID_FOREGROUND);
headStyle.setFont(font);// 選擇需要用到的字體格式
HSSFCellStyle contentStyle = wb.createCellStyle(); // 內容樣式
contentStyle.setBorderBottom(HSSFCellStyle.BORDER_THIN); // 下邊框
contentStyle.setBorderLeft(HSSFCellStyle.BORDER_THIN);// 左邊框
contentStyle.setBorderTop(HSSFCellStyle.BORDER_THIN);// 上邊框
contentStyle.setBorderRight(HSSFCellStyle.BORDER_THIN);// 右邊框
HSSFRow row_h = sheet.createRow((short) 0);
HSSFCell ch = row_h.createCell(0);
ch.setCellValue("測試導出Excel");
ch.setCellStyle(headStyle);
sheet.addMergedRegion(new Region(0, (short) 0, 0, (short) 2));// 指定合並區域
//表頭
HSSFRow row1 = sheet.createRow((short) 1);
HSSFCell cell_1_0 = row1.createCell(0);
cell_1_0.setCellValue("姓名");
cell_1_0.setCellStyle(headStyle);
HSSFCell cell_1_1 = row1.createCell(1);
cell_1_1.setCellValue("出生日期");
cell_1_1.setCellStyle(headStyle);
HSSFCell cell_1_2 = row1.createCell(2);
cell_1_2.setCellValue("住址");
cell_1_2.setCellStyle(headStyle);
//內容
HSSFRow row2 = sheet.createRow(2);
HSSFCell cell_2_0 = row2.createCell(0);
cell_2_0.setCellValue("itmyhome");
cell_2_0.setCellStyle(contentStyle);
HSSFCell cell_2_1 = row2.createCell(1);
cell_2_1.setCellValue("1990-05-01");
cell_2_1.setCellStyle(contentStyle);
HSSFCell cell_2_2 = row2.createCell(2);
cell_2_2.setCellValue("北京市昌平區");
cell_2_2.setCellStyle(contentStyle);
FileOutputStream fileOut = new FileOutputStream("d:/mysheet.xls"); //導出路徑
wb.write(fileOut);
fileOut.close();
inputStream = new FileInputStream("d:/mysheet.xls"); //下載
} catch (Exception e) {
e.printStackTrace();
}
return "success";
}
public InputStream getInputStream() {
return inputStream;
}
public void setInputStream(InputStream inputStream) {
this.inputStream = inputStream;
}
}
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struts.xml
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
<struts>
<package name="json_code" extends="json-default">
<!-- 導出報表 -->
<action name="exportExcelAction" method="export"
class="com.itmyhome.ExportExcelAction">
<result type="stream">
<param name="contentType">application/octet-stream</param>
<param name="inputName">inputStream</param>
<param name="contentDisposition">attachment;filename="export.xls"</param>
<param name="bufferSize">4096</param>
</result>
</action>
</package>
<package name="build" extends="struts-default">
<action name="login" method="login" class="com.itmyhome.Login">
<result name="success">index.jsp</result>
</action>
</package>
</struts>
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導出Excel如圖:
作者:itmyhome
源碼:download
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Java實現POI導出Excel