1.在pom.xml文件中导入注解,主要利用POI
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>2.4</version>
</dependency>
2.entity实体类
public class User implements Serializable {
private Integer id;
private String name;
private String phone;
private String address;
private Date enrolDate;
private String des;
private static final long serialVersionUID = 1L;
public User(Integer id, String name, String phone, String address, Date enrolDate, String des) {
this.id = id;
this.name = name;
this.phone = phone;
this.address = address;
this.enrolDate = enrolDate;
this.des = des;
}
public User() {
super();
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name == null ? null : name.trim();
}
public String getPhone() {
return phone;
}
public void setPhone(String phone) {
this.phone = phone == null ? null : phone.trim();
}
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address == null ? null : address.trim();
}
public Date getEnrolDate() {
return enrolDate;
}
public void setEnrolDate(Date enrolDate) {
this.enrolDate = enrolDate;
}
public String getDes() {
return des;
}
public void setDes(String des) {
this.des = des == null ? null : des.trim();
}
@Override
public boolean equals(Object that) {
if (this == that) {
return true;
}
if (that == null) {
return false;
}
if (getClass() != that.getClass()) {
return false;
}
User other = (User) that;
return (this.getId() == null ? other.getId() == null : this.getId().equals(other.getId()))
&& (this.getName() == null ? other.getName() == null : this.getName().equals(other.getName()))
&& (this.getPhone() == null ? other.getPhone() == null : this.getPhone().equals(other.getPhone()))
&& (this.getAddress() == null ? other.getAddress() == null : this.getAddress().equals(other.getAddress()))
&& (this.getEnrolDate() == null ? other.getEnrolDate() == null : this.getEnrolDate().equals(other.getEnrolDate()))
&& (this.getDes() == null ? other.getDes() == null : this.getDes().equals(other.getDes()));
}
@Override
public int hashCode() {
final int prime = 31;
int result = 1;
result = prime * result + ((getId() == null) ? 0 : getId().hashCode());
result = prime * result + ((getName() == null) ? 0 : getName().hashCode());
result = prime * result + ((getPhone() == null) ? 0 : getPhone().hashCode());
result = prime * result + ((getAddress() == null) ? 0 : getAddress().hashCode());
result = prime * result + ((getEnrolDate() == null) ? 0 : getEnrolDate().hashCode());
result = prime * result + ((getDes() == null) ? 0 : getDes().hashCode());
return result;
}
}
3.Controller接口
@RestController
@RequestMapping("/test/")
public class TestController {
@Autowired
private ITestService testService;
@PostMapping("/import")
public boolean addUser(@RequestParam("file") MultipartFile file) {
boolean a = false;
String fileName = file.getOriginalFilename();
try {
a = testService.batchImport(fileName, file);
} catch (Exception e) {
e.printStackTrace();
}
return a;
}
}
4.服务层接口
public interface ITestService {
boolean batchImport(String fileName, MultipartFile file) throws Exception;
}
5.业务层实现类
@Service
@Transactional(readOnly = true)
public class TestServiceImpl implements ITestService {
@Autowired
private UserMapper userMapper;
@Transactional(readOnly = false,rollbackFor = Exception.class)
@Override
public boolean batchImport(String fileName, MultipartFile file) throws Exception {
boolean notNull = false;
List<User> userList = new ArrayList<User>();
if (!fileName.matches("^.+\\.(?i)(xls)$") && !fileName.matches("^.+\\.(?i)(xlsx)$")) {
throw new MyException("上传文件格式不正确");
}
boolean isExcel2003 = true;
if (fileName.matches("^.+\\.(?i)(xlsx)$")) {
isExcel2003 = false;
}
InputStream is = file.getInputStream();
Workbook wb = null;
if (isExcel2003) {
wb = new HSSFWorkbook(is);
} else {
wb = new XSSFWorkbook(is);
}
Sheet sheet = wb.getSheetAt(0);
if(sheet!=null){
notNull = true;
}
User user;
for (int r = 1; r <= sheet.getLastRowNum(); r++) {
Row row = sheet.getRow(r);
if (row == null){
continue;
}
user = new User();
if( row.getCell(0).getCellType() !=1){
throw new MyException("导入失败(第"+(r+1)+"行,姓名请设为文本格式)");
}
String name = row.getCell(0).getStringCellValue();
if(name == null || name.isEmpty()){
throw new MyException("导入失败(第"+(r+1)+"行,姓名未填写)");
}
row.getCell(1).setCellType(Cell.CELL_TYPE_STRING);
String phone = row.getCell(1).getStringCellValue();
if(phone==null || phone.isEmpty()){
throw new MyException("导入失败(第"+(r+1)+"行,电话未填写)");
}
String add = row.getCell(2).getStringCellValue();
if(add==null){
throw new MyException("导入失败(第"+(r+1)+"行,不存在此单位或单位未填写)");
}
Date date;
if(row.getCell(3).getCellType() !=0){
throw new MyException("导入失败(第"+(r+1)+"行,入职日期格式不正确或未填写)");
}else{
date = row.getCell(3).getDateCellValue();
}
String des = row.getCell(4).getStringCellValue();
user.setName(name);
user.setPhone(phone);
user.setAddress(add);
user.setEnrolDate(date);
user.setDes(des);
userList.add(user);
}
for (User userResord : userList) {
String name = userResord.getName();
int cnt = userMapper.selectByName(name);
if (cnt == 0) {
userMapper.addUser(userResord);
System.out.println(" 插入 "+userResord);
} else {
userMapper.updateUserByName(userResord);
System.out.println(" 更新 "+userResord);
}
}
return notNull;
}
}
6.mapper层
@Mapper
public interface UserMapper {
void addUser(User sysUser);
int updateUserByName(User sysUser);
int selectByName(String name);
}
7.mybatis
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.why.MyProject.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.why.MyProject.entity.User">
<constructor>
<idArg column="t_id" javaType="java.lang.Integer" jdbcType="INTEGER" />
<arg column="t_name" javaType="java.lang.String" jdbcType="VARCHAR" />
<arg column="t_phone" javaType="java.lang.String" jdbcType="VARCHAR" />
<arg column="t_address" javaType="java.lang.String" jdbcType="VARCHAR" />
<arg column="t_enrol_date" javaType="java.util.Date" jdbcType="TIMESTAMP" />
<arg column="t_des" javaType="java.lang.String" jdbcType="VARCHAR" />
</constructor>
</resultMap>
<insert id="addUser" parameterType="com.why.MyProject.entity.User">
insert into user
(name,phone,address,enrol_date,des)
values
(
#{name},
#{phone},
#{address},
#{enrolDate},
#{des}
)
</insert>
<update id="updateUserByName" parameterType="com.why.MyProject.entity.User">
update user
set
phone=#{phone},
address=#{address},
enrol_date=#{enrolDate},
des=#{des}
where name = #{name}
</update>
<select id="selectByName" resultType="java.lang.Integer">
SELECT
count(*)
FROM user
WHERE name=#{name}
</select>
</mapper><?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.why.MyProject.mapper.UserMapper">
<resultMap id="BaseResultMap" type="com.why.MyProject.entity.User">
<constructor>
<idArg column="t_id" javaType="java.lang.Integer" jdbcType="INTEGER" />
<arg column="t_name" javaType="java.lang.String" jdbcType="VARCHAR" />
<arg column="t_phone" javaType="java.lang.String" jdbcType="VARCHAR" />
<arg column="t_address" javaType="java.lang.String" jdbcType="VARCHAR" />
<arg column="t_enrol_date" javaType="java.util.Date" jdbcType="TIMESTAMP" />
<arg column="t_des" javaType="java.lang.String" jdbcType="VARCHAR" />
</constructor>
</resultMap>
<insert id="addUser" parameterType="com.why.MyProject.entity.User">
insert into user
(name,phone,address,enrol_date,des)
values
(
#{name},
#{phone},
#{address},
#{enrolDate},
#{des}
)
</insert>
<update id="updateUserByName" parameterType="com.why.MyProject.entity.User">
update user
set
phone=#{phone},
address=#{address},
enrol_date=#{enrolDate},
des=#{des}
where name = #{name}
</update>
<select id="selectByName" resultType="java.lang.Integer">
SELECT
count(*)
FROM user
WHERE name=#{name}
</select>
</mapper>
8.excel示例