poi做Excel数据驱动,支持.xls和.xlsx格式的excel文档，比起jxl强大不少

import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.Map;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.usermodel.WorkbookFactory;
import org.testng.Assert;

public class PoiExcelProvider implements Iterator<Object[]> {

private Workbook book = null;
private Sheet sheet = null;
private int rowNum = 0;
private int currentRowNo = 0;
private short columnNum = 0;
private String[] columnnName;
/**获取第一行的所有单元格里面的类容：即key值*/
public PoiExcelProvider(String filePath,String sheetName) {

try {

InputStream inputStream = new FileInputStream(filePath);
book = WorkbookFactory.create(inputStream);
//取sheet
sheet = book.getSheet(sheetName);
rowNum = sheet.getLastRowNum()+1;//获取最后一行的行号,即获取一共有多少行
//获取当前sheet的第一行数据
Row row = sheet.getRow(0);
//第一行数据的一共有多少个单元格
columnNum = row.getLastCellNum();
//声明一个数组，长度为第一行所有单元格的长度
columnnName = new String[columnNum];

for (int i = 0; i < columnNum; i++) {
//获取第一行所有单元格的内容，存放到数组columnnName中
columnnName[i] = row.getCell(i).getStringCellValue();
}
this.currentRowNo++;//指向下一行
} catch (Exception e) {
e.printStackTrace();
Assert.fail("unable to read Excel data");
}
}
/*判断Excel是否还有内容*/
@Override
public boolean hasNext() {
//如果一行数据也没有或者当前行号超出最大行号，就关闭Excel
if (this.rowNum == 0 || this.currentRowNo >= this.rowNum) {

try {
book.close();
} catch (Exception e) {
e.printStackTrace();
}
return false;
} else {
// sheet下一行内容为空判定结束
if ((sheet.getRow(currentRowNo)).getCell(0).equals("")){
return false;
}

return true;
}
}
/**读取除key之外的Excel的所有内容*/
@Override
public Object[] next() {

//获取当前行对象
Row row = sheet.getRow(this.currentRowNo);
Map<String, String> data = new LinkedHashMap<String, String>();

for (int i = 0; i < this.columnNum; i++) {

String temp = "";

try {
temp = row.getCell(i).getStringCellValue();
} catch (ArrayIndexOutOfBoundsException ex) {
temp = "";
}
data.put(this.columnnName[i], temp);
}
Object object[] = new Object[1];
object[0] = data;
this.currentRowNo++;
return object;
}
@Override
public void remove() {
throw new UnsupportedOperationException("remove unsupported.");
}

}