SSM将Excel表中数据存放在数据库中
转自：点击查看
mapper.java、mapper.xml和实体类也可以通过逆向工程产生。
1、maven配置相应jar
org.apache.poi
poi
3.8-beta3
jar
compile
org.apache.poi
poi-ooxml
3.9
jar
2、创建excel工具类文件ExcelUtils
import java.io.IOException;
import java.io.InputStream;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import org.apache.poi.hssf.usermodel.HSSFDateUtil;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
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.xssf.usermodel.XSSFWorkbook;
public class ExcelUtils {
private final static String excel2003L =".xls"; //2003- 版本的excel
private final static String excel2007U =".xlsx"; //2007+ 版本的excel
/**
* 描述：获取IO流中的数据，组装成List>对象
* @param in,fileName
* @return
* @throws IOException
*/
public List> getBankListByExcel(InputStream in,String fileName) throws Exception{
List> list = null;
//创建Excel工作薄
Workbook work = this.getWorkbook(in,fileName);
if(null == work){
throw new Exception("创建Excel工作薄为空！");
}
Sheet sheet = null; //页数
Row row = null; //行数
Cell cell = null; //列数
list = new ArrayList>();
//遍历Excel中所有的sheet
for (int i = 0; i < work.getNumberOfSheets(); i++) {
sheet = work.getSheetAt(i);
if(sheet==null){continue;}
//遍历当前sheet中的所有行
for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {
row = sheet.getRow(j);
if(row==null||row.getFirstCellNum()==j){continue;}
//遍历所有的列
List 3、实体类people.java
public class people {
private Integer id;
private String userName;
private String password;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName == null ? null : userName.trim();
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password == null ? null : password.trim();
}
}4、创建peopleMapper.java
public interface peopleMapper {
int deleteByPrimaryKey(Integer id);
int insert(people record);
int insertSelective(people record);
people selectByPrimaryKey(Integer id);
int updateByPrimaryKeySelective(people record);
int updateByPrimaryKey(people record);
void insertInfoBatch(List list);
} peopleMapper.xml
id, username, password
delete from people
where id = #{id,jdbcType=INTEGER}
insert into people (id, username, password)
values (#{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR})
insert into people
id,
username,
password,
#{id,jdbcType=INTEGER},
#{userName,jdbcType=VARCHAR},
#{password,jdbcType=VARCHAR},
update people
user_name = #{userName,jdbcType=VARCHAR},
password = #{password,jdbcType=VARCHAR},
where id = #{id,jdbcType=INTEGER}
update people
set username = #{userName,jdbcType=VARCHAR},
password = #{password,jdbcType=VARCHAR}
where id = #{id,jdbcType=INTEGER}
insert into people (id, username, password)
values
(#{id,jdbcType=INTEGER}, #{userName,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR})
5、service层
创建peopleService.java
public interface PeopleService {
String ajaxUploadExcel(HttpServletRequest request,HttpServletResponse response);
}
创建peopleServiceImpl.java
@Service("PeopleService")
public class PeopleServiceImpl implements PeopleService{
@Resource(name="peopleMapper")
private peopleMapper peopleMapper;
public String ajaxUploadExcel(HttpServletRequest request,HttpServletResponse response){
MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
MultipartFile file = multipartRequest.getFile("file");
if(file.isEmpty()){
try {
throw new Exception("文件不存在！");
} catch (Exception e) {
e.printStackTrace();
}
}
InputStream in =null;
try {
in = file.getInputStream();
} catch (IOException e) {
e.printStackTrace();
}
List> listob = null;
try {
listob = new ExcelUtils().getBankListByExcel(in,file.getOriginalFilename());
} catch (Exception e) {
e.printStackTrace();
}
for (int i = 0; i < listob.size(); i++) {
/* List 6、Contrller层
创建ExcelController.java
@Controller
@RequestMapping("/upload")
public class ExcelController {
@Resource(name="PeopleService")
private PeopleService PeopleService;
@ResponseBody
@RequestMapping(value="ajaxUpload.do",method={RequestMethod.GET,RequestMethod.POST})
public String ajaxUploadExcel(HttpServletRequest request,HttpServletResponse response) throws Exception {
return PeopleService.ajaxUploadExcel(request, response);
} 7、前端页面
前端使用的是layui，此处贴出关键代码
8、excel表中格式
| ID | USERNAME | PASSWORD |
|---|---|---|
| 3 | rr | rr123 |
| 4 | jj2 | jjp |