使用JXL从Excel中提取数据插入到数据库中

1. 首先表数据基本有一个表头，表头下是数据。这就要求我们必须知道表头的那一列对应哪个数据库字段，但是IBATIS插入都是List<T>结构

也就是说T类型已知，要知道表头的那一列对应那一个PO属性。

方法如下：

import java.util.HashMap;
import java.util.Map;
import jxl.Cell;
import jxl.CellType;
import jxl.Sheet;
public class JxlExt {
/**
* 获得Excel Sheet指定列和PO属性对构成的集合
* @param sheet Excel Sheet
* @param firstCol 起始列
* @param firstRow 起始行
* @param lastCol 终点列
* @param lastRow 终点行
* @param mTP sheet中的名称和PO对象对应的属性名称对集合,例如<"单位名称","orgName">
* @return Map<Integer, String>,Integer对应列标,String对应PO属性
*/
public Map<Integer, String> findCell(Sheet sheet, int firstCol,
int firstRow, int lastCol, int lastRow, Map<String, String> mTP) throws Exception {
Map<Integer, String> mColP = new HashMap<Integer, String>();
int numCols = lastCol - firstCol;
int numRows = lastRow - firstRow;
for (int i = 0; i <= numRows; i++) {
int curRow = firstRow + i;
for (int j = 0; j <= numCols; j++) {
int curCol = firstCol + j;
if (curCol < sheet.getColumns() && curRow < sheet.getRows()) {
Cell c = sheet.getCell(curCol, curRow);
if (c.getType() != CellType.EMPTY) {
if (mTP.get(c.getContents()) != null) {
mColP.put(curCol, mTP.get(c.getContents()));
}
}
}
}
}
return mColP;
}
}

其次就是要搜索数据了！

import java.util.List;
import java.util.Map;
import jxl.Sheet;
public interface IExcelDataManage<T> {
/**
* @param sheet Excel Sheet
* @param firstRow 起始行
* @param lastRow 终点行
* @param mCP 指定列和PO属性对构成的集合
* @return 需要返回的对象集合
* @throws Exception
*/
public abstract List<T> findData(Sheet sheet, int firstRow,
int lastRow, Map<Integer, String> mCP) throws Exception;
/**
* 合并重复的集合数据
* @param srtKey 标识列--对应PO中的属性
* @param lstOrgs 传入集合
* @return 不重复集合
* @throws Exception
*/
public abstract List<T> mergeData(String srtKey,
List<T> lstOrgs) throws Exception;
}

其中一个实现类为插入部门数据。

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import jxl.Sheet;
import org.apache.commons.beanutils.PropertyUtils;
import com.lfpost.model.IExcelDataManage;
import com.lfpost.po.Organization;
public class ExcelOrgDataManage implements IExcelDataManage<Organization> {
/* (non-Javadoc)
* @see jxlTest.IExcelDataManage#findData(jxl.Sheet, int, int, java.util.Map)
*/
public List<Organization> findData(Sheet sheet, int firstRow, int lastRow,
Map<Integer, String> mCP) throws Exception {
List<Organization> retLst = new ArrayList<Organization>();
int numRows = lastRow - firstRow;
for (int i = 0; i <= numRows; i++) {
int curRow = firstRow + i;
Organization org = new Organization();
for (Map.Entry<Integer, String> tmp : mCP.entrySet()) {
PropertyUtils.setProperty(org, tmp.getValue(), sheet.getCell(
tmp.getKey(), curRow).getContents());
}
retLst.add(org);
}
return retLst;
}
/* (non-Javadoc)
* @see jxlTest.IExcelDataManage#mergeData(java.lang.String, java.util.List)
*/
public List<Organization> mergeData(String srtKey,
List<Organization> lstOrgs) throws Exception {
List<Organization> retLst = new ArrayList<Organization>();
Map<String, Organization> mColP = new HashMap<String, Organization>();
for (Organization org : lstOrgs) {
String strMKey = (String) PropertyUtils.getProperty(org, srtKey);
mColP.put(strMKey, org);
}
for (Map.Entry<String, Organization> tmp : mColP.entrySet()) {
retLst.add(tmp.getValue());
}
return retLst;
}
}

写一个测试

public static void main(String[] args) throws Exception {
Map<String, String> mColP = new HashMap<String, String>();
mColP.put("单位", "orgName");
mColP.put("部门性质", "orgType");
Workbook book = Workbook.getWorkbook(new File("E:/test.xls"));
// 获得第一个工作表对象
Sheet sheet = book.getSheet(0);
IExcelDataManage zh = new ZhSExcelManager();
Map<Integer, String> m = zh.findCell(sheet, 0, 0, 48, 1, mColP);
List<Organization> lorg = zh.findData(sheet, 2, 658, m);
lorg = zh.mergeData("orgName", lorg);
int i = 1;
for (Iterator iterator = lorg.iterator(); iterator.hasNext();) {
System.out.println(i++);
Organization org = (Organization) iterator.next();
System.out.println(org + org.getOrgName() + "_" + org.getOrgType());
}
book.close();
book = null;
}

数据提取出就可以使用批量插入方法了！