导入导出Excel工具，支持XML和properties配置（一）
需要jxl.jar,dom4j.jar
JXLUtil.java
package ssh.util;
import java.io.File;
import java.io.IOException;
import java.io.OutputStream;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.servlet.http.HttpServletResponse;
import jxl.Sheet;
import jxl.Workbook;
import jxl.format.Alignment;
import jxl.format.Border;
import jxl.format.BorderLineStyle;
import jxl.format.Colour;
import jxl.format.UnderlineStyle;
import jxl.format.VerticalAlignment;
import jxl.write.Label;
import jxl.write.WritableCellFormat;
import jxl.write.WritableFont;
import jxl.write.WritableSheet;
import jxl.write.WritableWorkbook;
import jxl.write.WriteException;
import jxl.write.biff.RowsExceededException;
/**
* 导入,导出excel
* @author gary
* @version 1.0
*
*/
public class JXLUtil {
private JXLReader reader;
public JXLUtil(){
reader = new JXLReader();
}
/**
* 返回目标数据库列名key
* @param target
* @return
*/
public String getTargetKey(String target){
return reader.getTargetValue(target, "key");
}
/**
* 返回目标标题
* @param target
* @return
*/
public String getTargetTitle(String target){
return reader.getTargetValue(target, "title");
}
/**
* 返回目标文件名
* @param target
* @return
*/
public String getTargetFileName(String target){
return reader.getTargetValue(target, "fileName");
}
/**
* 导出EXCEL
*
* jxl.xml配置:
* <jxl>
* <目标>
* <title>标题</title>
* <key>数据库中的列名</key>
* <fileName>文件名</fileName>
* </目标>
* </jxl>
* example:
* <jxl>
* <user>
* <title>ID,用户名,登陆密码,真实名字</title>
* <key>userId,userName,password,realName</key>
* <fileName>userInfo</fileName>
* </user>
* </jxl>
*
* jxl.properties配置:
* 标题: jxl.目标.title
* 数据库表中的列名: jxl.目标.key
* 文件名: jxl.目标.fileName
* example:
* jxl.user.title=ID,\u7528\u6237\u540D,\u767B\u9646\u5BC6\u7801,\u771F\u5B9E\u540D\u5B57
* jxl.user.key=userId,userName,password,realName
* jxl.user.fileName=userInfo
*
* @param list
* @param target
* @param response
*/
public void exportExcel(List<Map<String,?>> list, String target, HttpServletResponse response){
try{
//设置table列名
String excelTitle = getTargetTitle(target);
String[] excelTitleArray = excelTitle.split(",");
//文件名
String fileName = getTargetFileName(target) + "_" + new SimpleDateFormat("yyyy-MM-dd").format(new Date());
//取得key
String excelKey = getTargetKey(target);
String[] excelKeyArray = excelKey.split(",");
// 取得输出流
OutputStream os = response.getOutputStream();
// 清空输出流
response.reset();
// 设定输出文件头,不用GBK会乱码
response.setHeader("Content-disposition", "attachment; filename=" + new String(fileName.getBytes("GBK"),"ISO-8859-1") + ".xls");
// 定义输出类型
response.setContentType("application/msexcel;charset=utf-8");
// 建立excel文件
WritableWorkbook wwb;
wwb = Workbook.createWorkbook(os);
// 创建一个工作表
WritableSheet ws = wwb.createSheet("Sheet1", 10);
// 设置单元格的文字格式
//WritableFont wf = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,
// UnderlineStyle.NO_UNDERLINE,Colour.BLUE);
WritableFont wf = new WritableFont(WritableFont.ARIAL,11,WritableFont.BOLD,false,
UnderlineStyle.NO_UNDERLINE,Colour.BLUE);
WritableCellFormat wcf = new WritableCellFormat(wf);
// 对齐方式
wcf.setAlignment(Alignment.CENTRE);
wcf.setVerticalAlignment(VerticalAlignment.CENTRE);
// 边框
wcf.setBorder(Border.ALL, BorderLineStyle.THIN);
// 背景色
wcf.setBackground(Colour.GRAY_25);
ws.setRowView(0, 500);
//设置列头名
for (int j=0;j<excelKeyArray.length;j++) {
ws.addCell(new Label(j, 0, excelTitleArray[j], wcf));
}
//设置内容
wcf = new WritableCellFormat();
for (int i = 0; i < list.size(); i++) {
Map<String, ?> mapList = (Map<String, ?>)list.get(i);
for (int j=0;j<excelKeyArray.length;j++) {
ws.addCell(new Label(j, i+1, (mapList.get(excelKeyArray[j])+"").toString(), wcf));
}
}
wwb.write();
wwb.close();
} catch (IOException e){
} catch (RowsExceededException e){
} catch (WriteException e){
}
}
/**
* 从excel文件读取数据,返回list
* @param file
* @param target
* @return
*/
public List<Map<String, ?>> getImportData(File file, String target){
List<Map<String, ?>> data = new ArrayList<Map<String, ?>>();
try {
Workbook book = Workbook.getWorkbook(file);
// 获得第一个sheet,默认有三个
Sheet sheet = book.getSheet(0);
// 一共有多少行多少列数据
int rows = sheet.getRows();
int columns = sheet.getColumns();
boolean hasText = false;
for (int i = 0; i < rows; i++) {
// 过滤掉没有文本内容的行
for (int j = 0; j < columns; j++)
if (sheet.getCell(j, i).getContents() != "") {
hasText = true;
break;
}
if (hasText) {
Map<String, String> temp = new HashMap<String, String>();
//取得key
String excelKey = getTargetKey(target);
String[] excelKeyArray = excelKey.split(",");
for(int k = 0 ; k < excelKeyArray.length ; k++){
temp.put(excelKeyArray[k], sheet.getCell(k, i).getContents());
}
// temp.put(Integer.valueOf(sheet.getCell(0, i).getContents()));
data.add(temp);
}
}
book.close();
} catch (Exception e) {
e.printStackTrace();
}
return data;
}
//附:jdbc批量导入例子
// //添加用户信息
// private static final String SQL_ADD_USER =
// "insert into users(userId,userName,password,realName) values (?,?,?,?)";
//
// /**
// * 从Excel文件导入到数据库user表
// */
// public int[] importUser(final File file) throws Exception {
//
// BatchPreparedStatementSetter pss = new BatchPreparedStatementSetter() {
//
// public void setValues(PreparedStatement ps, int i) throws SQLException {
// Map row = (Map)(jxlUtil.getImportData(file, "user").get(i));
//
// //取得key
// String excelKey =jxlUtil.getTargetKey("user");
// String[] excelKeyArray = excelKey.split(",");
//
// for(int k = 0 ; k < excelKeyArray.length ; k++){
// ps.setString(k+1, (String)row.get(excelKeyArray[k]));
// }
//
// }
//
// public int getBatchSize() {
// return jxlUtil.getImportData(file, "user").size();
// }
// };
// return jt.batchUpdate(SQL_ADD_USER, pss);
// }
}