一:創建一個Button
二:引入POI的jar包
三:在CO的processFormRequest中添加如下代碼(導入的包中,有些是做其他功能用的,只做數據導出的話,不用將下列的包全部導入)
import com.sun.java.util.collections.HashMap;
import java.io.OutputStream;
import java.io.Serializable;
import javax.servlet.http.HttpServletResponse;
import oracle.apps.fnd.common.VersionInfo;
import oracle.apps.fnd.framework.OAApplicationModule;
import oracle.apps.fnd.framework.OAException;
import oracle.apps.fnd.framework.webui.OAControllerImpl;
import oracle.apps.fnd.framework.webui.OAPageContext;
import oracle.apps.fnd.framework.webui.OAWebBeanConstants;
import oracle.apps.fnd.framework.webui.beans.OAWebBean;
import oracle.cabo.ui.data.DataObject;
public void processFormRequest(OAPageContext pageContext, OAWebBean webBean)
{
super.processFormRequest(pageContext, webBean);
OAApplicationModule am = pageContext.getApplicationModule(webBean); if("exportexcel".equals(pageContext.getParameter(EVENT_PARAM))){
byte[] abtye0 = (byte[])am.invokeMethod("export");
try {
//獲取DataObject
DataObject dataObject = pageContext.getNamedDataObject("_SessionParameters");
//根據DataObject獲取response
HttpServletResponse httpservletresponse = (HttpServletResponse)dataObject.selectValue(null, "HttpServletResponse");
download(pageContext, httpservletresponse, abtye0);
} catch (Exception e) {
e.printStackTrace();
throw OAException.wrapperException(e);
}
}
}
四:在CO中添加下列方法
public void download(OAPageContext pageContext, HttpServletResponse response, byte[] abyte0) {
String fileName = "EmpInfoData"; //最終導出數據生成的文件名字
try {
//String charset = pageContext.getProfile("ICX_CLIENT_IANA_ENCODING");
//設置文件的格式 字符集
response.setContentType("application/vnd.ms-excel;charset=gb2312;"); //gb2312
//設置文件大小
response.setContentLength(abyte0.length);
//throw new OAException("abyte0.length:"+abyte0.length,OAException.ERROR);
//通知瀏覽器文件的名字
response.setHeader("Content-Disposition", "attachment;filename=" + fileName + ".xls");
//獲取輸出流
OutputStream toClient = response.getOutputStream();
//將字符數組寫進輸出流
toClient.write(abyte0);
//強制刷新(頁面彈出下載框)
toClient.flush();
//關閉輸出流
toClient.close();
}
catch (Exception ex) {
ex.printStackTrace();
}
}
五:在AMImpl中加入下列方法(導入的包中,有些是做其他功能用的,只做數據導出的話,不用將下列的包全部導入)
import java.io.ByteArrayOutputStream;
import zz.oracle.apps.cux.adtable.server.EmployeeVOImpl;
import zz.oracle.apps.cux.adtable.server.EmployeeVORowImpl;
import oracle.apps.fnd.common.MessageToken;
import oracle.apps.fnd.framework.OAException;
import oracle.apps.fnd.framework.OAViewObject;
import oracle.apps.fnd.framework.server.OAApplicationModuleImpl;
import oracle.apps.fnd.framework.server.OADBTransaction;
import oracle.apps.fnd.framework.server.OAViewObjectImpl;
import oracle.jbo.Row;
import oracle.jbo.RowSetIterator;
import oracle.jbo.domain.Number;
import org.apache.poi.hssf.usermodel.HSSFCell;
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.ss.usermodel.CellStyle;
import zz.oracle.apps.cux.poplist.server.PositionsVOImpl;
public byte[] export() { byte abyte0[] = null; EmployeeVOImpl vo = getEmployeeVO1(); EmployeeVORowImpl hRow = null; int rowcount = vo.getRowCount(); //取當前提取的記錄集的記錄數 if (rowcount == 0) throw new OAException("沒有需要導出的數據", OAException.ERROR); RowSetIterator deleteIter = vo.createRowSetIterator("deleteIter"); //建立記錄集的指示符 deleteIter.setRangeStart(0); //設置循環起點,相當於移動指針到第一條記錄 deleteIter.setRangeSize(rowcount); //設置循環次數 //第一步,創建一個webbook,對應一個Excel文件 HSSFWorkbook wb = new HSSFWorkbook(); //第二步,在webbook中添加一個sheet,對應Excel文件中的sheet HSSFSheet sheet = wb.createSheet("test_sheet1"); //第三步,在sheet中添加表頭第0行,注意老版本poi對應Excel的行數列數有限制short HSSFRow row = sheet.createRow((int)0); //第四步,創建單元格,並設置值表頭 設置表頭居中 CellStyle style = wb.createCellStyle(); style.setAlignment(CellStyle.ALIGN_CENTER); //創建一個劇中格式 //CSV:CSV的定義是逗號分隔符,有時也稱為字符分隔符,因為分隔字符也可以不是逗號,CSV是一個可變長度的由字符分開的字符串,故使用StringBuffer StringBuffer buffer = new StringBuffer("姓,名,Full_Name,郵箱,主管姓名,職務,薪資,Start_Date,End_Date\r\n"); //Excel HSSFCell cell = row.createCell(0); cell.setCellValue("姓"); cell.setCellStyle(style); cell = row.createCell(1); cell.setCellValue("名"); cell.setCellStyle(style); cell = row.createCell(2); cell.setCellValue("Full_Name"); cell.setCellStyle(style); cell = row.createCell(3); cell.setCellValue("郵箱"); cell.setCellStyle(style); cell = row.createCell(4); cell.setCellValue("主管姓名"); cell.setCellStyle(style); cell = row.createCell(5); cell.setCellValue("職務"); cell.setCellStyle(style); cell = row.createCell(6); cell.setCellValue("薪資"); cell.setCellStyle(style); cell = row.createCell(7); cell.setCellValue("Start_Date"); cell.setCellStyle(style); cell = row.createCell(8); cell.setCellValue("End_Date"); cell.setCellStyle(style); for (int i = 0; i < rowcount; i++) { row = sheet.createRow((int)i + 1); hRow = (EmployeeVORowImpl)deleteIter.getRowAtRangeIndex(i); //取得當前記錄 //第五步,創建單元格,並設置值 row.createCell(0).setCellValue(hRow.getFirstName()); row.createCell(1).setCellValue(hRow.getLastName()); row.createCell(2).setCellValue(hRow.getFullName()); row.createCell(3).setCellValue(hRow.getEmailAddress()); row.createCell(4).setCellValue(hRow.getManagerName()); row.createCell(5).setCellValue(hRow.getPositionCode()); row.createCell(6).setCellValue(hRow.getSalary()==null?"":hRow.getSalary().doubleValue()+""); row.createCell(7).setCellValue(hRow.getStartDate()==null?"":hRow.getStartDate().dateValue()+""); row.createCell(8).setCellValue(hRow.getEndDate()==null?"":hRow.getEndDate().dateValue()+""); buffer.append(hRow.getFirstName() + "," + hRow.getLastName() + "," + hRow.getFullName() + "," + hRow.getEmailAddress() + "," + hRow.getManagerName() + "," + hRow.getPositionCode() + "," + hRow.getSalary() + "," + hRow.getStartDate() + "," + hRow.getEndDate() + "\r\n"); //使用字符\r\n進行換行,不然第二行以后的數據會全顯示在第一行最后一個單元格之中 } //第六步,將文件轉換成byte數組 try { //這里有兩種導出格式,已注釋的是CSV,未注釋的是EXCEL //Excel //文件只能轉成流,通過byte流轉成二進制數組(流無法序列化做成參數傳出) ByteArrayOutputStream os = new ByteArrayOutputStream(); //文件寫入流 wb.write(os); //流轉數組 abyte0 = os.toByteArray(); //關閉流 os.close(); // //CSV // //字符直接轉byte數組 // abyte0 = buffer.toString().getBytes(); } catch (Exception e) { e.printStackTrace(); } deleteIter.closeRowSetIterator(); return abyte0; }
六:上面演示的是導出CSV和xls格式文件,xlsx文件只需要將HSSF改為XSSF,並導入相關包即可。
第二種導出數據是用OAF的exportbutton類型,具體可以看我另一篇文章:https://www.cnblogs.com/AI-xiaocai/p/11731171.html;
第三種導出數據是用JXL.jar生成xls格式文件,具體可以看我另一篇文章:https://www.cnblogs.com/AI-xiaocai/p/11732531.html。
參考資料:
1、https://blog.csdn.net/szwangdf/article/details/39053859:[JAVA]POI各Jar包的作用
2、https://www.cnblogs.com/AI-xiaocai/p/11732531.html:通過JXL.jar導出數據生成xls格式文件