java中excel的上传

看似很难的东西，只要开始了，就离测试不远了。
只需三个文件， 运行XlsMain文件测试就可以了。

XlsDto.java
package student;
public class XlsDto {
private Integer xkh;
private String xh;
private String xm;
private String yxsmc;
private Integer kch;
private String kcm;
private float cj;
public Integer getXkh() {
return xkh;
}
public void setXkh(Integer xkh) {
this.xkh = xkh;
}
public String getXh() {
return xh;
}
public void setXh(String xh) {
this.xh = xh;
}
public String getXm() {
return xm;
}
public void setXm(String xm) {
this.xm = xm;
}
public String getYxsmc() {
return yxsmc;
}
public void setYxsmc(String yxsmc) {
this.yxsmc = yxsmc;
}
public Integer getKch() {
return kch;
}
public void setKch(Integer kch) {
this.kch = kch;
}
public String getKcm() {
return kcm;
}
public void setKcm(String kcm) {
this.kcm = kcm;
}
public float getCj() {
return cj;
}
public void setCj(float cj) {
this.cj = cj;
}

}

XlsDto2Excel.java
package student;

import java.io.FileOutputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRichTextString;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;

public class XlsDto2Excel {
//get엑셀 데이터
public static void xlsDto2Excel(List xls) throws Exception {
int CountColumnNum = xls.size();
HSSFWorkbook hwb = new HSSFWorkbook();
XlsDto xlsDto = null;
HSSFSheet sheet = hwb.createSheet(“goodsList”);//get시트데이터
HSSFRow firstrow = sheet.createRow(0);
HSSFCell[] firstcell = new HSSFCell[CountColumnNum];
String[] names = new String[CountColumnNum];
names[0] = “넘버”;
names[1] = “성명”;
names[2] = “학원”;
names[3] = “클라스”;
names[4] = “성적”;
for (int j = 0; j < CountColumnNum; j++) {
firstcell[j] = firstrow.createCell((short) j);
firstcell[j].setCellValue(new HSSFRichTextString(names[j]));
}

    for (int i = 0; i < xls.size(); i++) {        HSSFRow row = sheet.createRow(i + 1);        xlsDto = xls.get(i);        for (int colu = 0; colu <= 4; colu++) {            HSSFCell xh = row.createCell((short) 0);            xh.setCellValue(xlsDto.getXh());            HSSFCell xm = row.createCell((short) 1);            xm.setCellValue(xlsDto.getXm());            HSSFCell yxsmc = row.createCell((short) 2);            yxsmc.setCellValue(xlsDto.getYxsmc());            HSSFCell kcm = row.createCell((short) 3);            kcm.setCellValue(xlsDto.getKcm());            HSSFCell cj = row.createCell((short) 4);            cj.setCellValue(xlsDto.getCj());        }    }    OutputStream out = new FileOutputStream("Z://test_1.xls");    hwb.write(out);    out.close();    System.out.println("성공!!");}}

XlsMain.java
package student;

import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
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;

public class XlsMain {
public static void main(String[] args) throws IOException {
XlsMain xlsMain = new XlsMain();
XlsDto xls = null;
List list = xlsMain.readXls();
try {
//get엑셀 데이터
XlsDto2Excel.xlsDto2Excel(list);
} catch (Exception e) {
e.printStackTrace();
}
//검증
for (int i = 0; i < list.size(); i++) {
xls = (XlsDto) list.get(i);
System.out.println(xls.getXh() + ” ” + xls.getXm() + ” “+ xls.getYxsmc() + ” ” + xls.getKcm() + ” “+ xls.getCj());

    }}private List<XlsDto> readXls() throws IOException {    InputStream is = new FileInputStream("Z://test_1.xls");    HSSFWorkbook hssfWorkbook = new HSSFWorkbook(is);    XlsDto xlsDto = null;    List<XlsDto> list = new ArrayList<XlsDto>();    for (int numSheet = 0; numSheet < hssfWorkbook.getNumberOfSheets(); numSheet++) {        HSSFSheet hssfSheet = hssfWorkbook.getSheetAt(numSheet);        if (hssfSheet == null) {            continue;        }        // 循环行Row        for (int rowNum = 1; rowNum <= hssfSheet.getLastRowNum(); rowNum++) {            HSSFRow hssfRow = hssfSheet.getRow(rowNum);            if (hssfRow == null) {                continue;            }            xlsDto = new XlsDto();            // 循环列Cell            HSSFCell xh = hssfRow.getCell((short) 0);            if (xh == null) {                continue;            }            xlsDto.setXh(getValue(xh));            HSSFCell xm = hssfRow.getCell((short) 1);            if (xm == null) {                continue;            }            xlsDto.setXm(getValue(xm));            HSSFCell yxsmc = hssfRow.getCell((short) 2);            if (yxsmc == null) {                continue;            }            xlsDto.setYxsmc(getValue(yxsmc));            HSSFCell kcm = hssfRow.getCell((short) 3);            if (kcm == null) {                continue;            }            xlsDto.setKcm(getValue(kcm));            HSSFCell cj = hssfRow.getCell((short) 4);            if (cj == null) {                continue;            }            list.add(xlsDto);        }    }    return list;}private String getValue(HSSFCell hssfCell) {    if (hssfCell.getCellType() == hssfCell.CELL_TYPE_BOOLEAN) {        return String.valueOf(hssfCell.getBooleanCellValue());    } else if (hssfCell.getCellType() == hssfCell.CELL_TYPE_NUMERIC) {        return String.valueOf(hssfCell.getNumericCellValue());    } else {        return String.valueOf(hssfCell.getStringCellValue());    }}

}