SpringBoot的POI（Word、Excel文档的读写）
SpringBoot的POI（Word、Excel文档的读写）
项目目录
1.新建SpringBoot项目
1.1导入环境依赖
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0modelVersion>
<parent>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-parentartifactId>
<version>2.3.12.RELEASEversion>
<relativePath/>
parent>
<groupId>com.qfgroupId>
<artifactId>days73spt_poiartifactId>
<version>0.0.1-SNAPSHOTversion>
<name>days73spt_poiname>
<description>Demo project for Spring Bootdescription>
<properties>
<java.version>1.8java.version>
properties>
<dependencies>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<optional>trueoptional>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-testartifactId>
<scope>testscope>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>poi-ooxmlartifactId>
<version>3.17version>
dependency>
<dependency>
<groupId>org.apache.poigroupId>
<artifactId>ooxml-schemasartifactId>
<version>1.1version>
dependency>
<dependency>
<groupId>org.mybatis.spring.bootgroupId>
<artifactId>mybatis-spring-boot-starterartifactId>
<version>1.1.1version>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-data-jpaartifactId>
dependency>
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>5.1.49version>
dependency>
<dependency>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
<version>1.16.16version>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-starter-webartifactId>
dependency>
<dependency>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-devtoolsartifactId>
dependency>
dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.bootgroupId>
<artifactId>spring-boot-maven-pluginartifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombokgroupId>
<artifactId>lombokartifactId>
exclude>
excludes>
configuration>
plugin>
plugins>
build>
project>
1.2配置文件
#DB Configuration:
spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/springboot?useUnicode=true&characterEncoding=utf8&useSSL=false
spring.datasource.username=root
spring.datasource.password=root
#JPA Configuration:
spring.jpa.database=MySQL
spring.jpa.show-sql=true
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.hibernate.naming_strategy=org.hibernate.cfg.ImprovedNamingStrategy
server.port=9999
#Mybatis Configuration:
spring.datasource.druid.url=jdbc:mysql://localhost:3306/springboot?characterEncoding=utf-8&useSSL=false
spring.datasource.druid.username=root
spring.datasource.druid.password=root
spring.datasource.druid.driver-class-name=com.mysql.jdbc.Driver
pagehelper.auto-dialect=mysql
mybatis.type-aliases-package=com.qfedu.pojo
mybatis.mapper-locations=classpath:mapper/*Mapper.xml
2.Word的读写
2.1写操作
package com.word;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.apache.poi.xwpf.usermodel.XWPFRun;
import org.springframework.stereotype.Service;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
@Service
public class WriteDoc {
public void exportDoc(){
//创建Word对象
XWPFDocument xwpfDocument = new XWPFDocument ();
//创建一个段落对象
XWPFParagraph titleParagraph = xwpfDocument.createParagraph ();
//创建文本对象
XWPFRun titleParagraphRun = titleParagraph.createRun ();
titleParagraphRun.setBold (true);
titleParagraphRun.setText ("这是一个POI操作Word的测试00000000");
titleParagraphRun.setColor ("FF0000");
titleParagraphRun.setText ("红色的字？");
String fileName = "POI操作Word.doc";
try {
OutputStream outputStream = new FileOutputStream (fileName);
//执行写出到本地
xwpfDocument.write (outputStream);
xwpfDocument.close ();
} catch (FileNotFoundException e) {
e.printStackTrace ();
} catch (IOException e) {
e.printStackTrace ();
}
}
}
2.2读操作
package com.word;
import org.apache.poi.xwpf.usermodel.XWPFDocument;
import org.apache.poi.xwpf.usermodel.XWPFParagraph;
import org.springframework.stereotype.Service;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
@Service
public class ReadDoc {
public void importDoc(){
String fileName = "POI操作Word.doc";
try {
InputStream inputStream = new FileInputStream (fileName);
XWPFDocument xwpfDocument = new XWPFDocument (inputStream);
List<XWPFParagraph> paragraphs = xwpfDocument.getParagraphs ();
for (XWPFParagraph paras:paragraphs){
System.out.println (paras.getText ());
}
} catch (FileNotFoundException e) {
e.printStackTrace ();
} catch (IOException e) {
e.printStackTrace ();
}
}
}
2.3 controller层调用
在浏览器上测试
package com.controller;
import com.word.ReadDoc;
import com.word.WriteDoc;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class WordController {
@Autowired
private ReadDoc readDoc;
@Autowired
private WriteDoc writeDoc;
@RequestMapping("/writeWord")
public String writeWord(){
writeDoc.exportDoc ();
return "成功";
}
@RequestMapping("/readWord")
public String readWord(){
readDoc.importDoc ();
return "成功";
}
}
3.Excel的读写
3.1 写操作
通过jpa将数据存到数据库中
pojo实体类（表头属性）
package com.pojo;
import lombok.Data;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
@Data
@Entity
@Table(name = "user_info")
public class User {
@Id
@Column(name = "user_id")
private Integer userId;
private String via;
@Column(name = "user_name")
private String userName;
@Column(name = "user_password")
private String userPassword;
private String phone;
private String address;
@Column(name = "user_email")
private String userEmail;
private Double balance;
@Column(name = "pay_pwd")
private String payPwd;
}
dao层
package com.dao;
import com.pojo.User;
import org.springframework.data.jpa.repository.JpaRepository;
public interface UserRepository extends JpaRepository<User,Integer> {
}
service层
package com.service;
import com.pojo.User;
import java.util.List;
public interface UserService {
List<User> selectAllUser();
}
package com.service.serviceImpl;
import com.dao.UserRepository;
import com.pojo.User;
import com.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import java.util.List;
@Service("userService")
public class UserServiceImpl implements UserService {
@Autowired
private UserRepository userRepository;
public List<User> selectAllUser(){
return userRepository.findAll ();
}
}
WriteXLS.java
package comu.excel;
import com.pojo.User;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.springframework.stereotype.Service;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.List;
@Service
public class WriteXLS {
public void exportExcel(List<User> list) {
HSSFWorkbook hssfWorkbook = new HSSFWorkbook ();
HSSFSheet sheet = hssfWorkbook.createSheet ();
HSSFRow titleRow = sheet.createRow (0);
titleRow.createCell (0).setCellValue ("用户编号");
titleRow.createCell (1).setCellValue ("用户头像");
titleRow.createCell (2).setCellValue ("用户姓名");
titleRow.createCell (3).setCellValue ("用户密码");
titleRow.createCell (4).setCellValue ("用户手机");
titleRow.createCell (5).setCellValue ("用户地址");
titleRow.createCell (6).setCellValue ("用户邮箱");
titleRow.createCell (7).setCellValue ("用户余额");
titleRow.createCell (8).setCellValue ("用户支付密码");
for (User user : list) {
//获取当前最大的行
int lastRowNum = sheet.getLastRowNum ();
//新创建一行操作
HSSFRow dataRow = sheet.createRow (lastRowNum + 1);
dataRow.createCell (0).setCellValue (user.getUserId ());
dataRow.createCell (1).setCellValue (user.getVia ()==null?"":user.getVia ());
dataRow.createCell (2).setCellValue (user.getUserName ()==null?"":user.getUserName ());
dataRow.createCell (3).setCellValue (user.getUserPassword ()==null?"":user.getUserPassword ());
dataRow.createCell (4).setCellValue (user.getPhone ()==null?"":user.getPhone ());
dataRow.createCell (5).setCellValue (user.getAddress ()==null?"":user.getAddress ());
dataRow.createCell (6).setCellValue (user.getUserEmail ()==null?"":user.getUserEmail ());
dataRow.createCell (7).setCellValue (user.getBalance ()==null?0:user.getBalance ());
dataRow.createCell (8).setCellValue (user.getPayPwd ()==null?"":user.getPayPwd ());
}
String fileName = "用户.xls";
try {
FileOutputStream fileOut = new FileOutputStream (fileName);
hssfWorkbook.write (fileOut);
hssfWorkbook.close ();
} catch (FileNotFoundException e) {
e.printStackTrace ();
} catch (IOException e) {
e.printStackTrace ();
}
}
}
3.2读操作
ReadXLS.java
package com.excel;
import com.pojo.User;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.springframework.stereotype.Service;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
@Service
public class ReadXLS {
public List<User> importXLS(){
ArrayList<User> list = new ArrayList<> ();
try {
String fileName = "用户.xls";
InputStream inputStream = new FileInputStream (fileName);
HSSFWorkbook workbook = new HSSFWorkbook (inputStream);
HSSFSheet sheetAt = workbook.getSheetAt (0);
for(Row row:sheetAt){
if (row.getRowNum ()==0){
continue;
}
Integer userId =(int) row.getCell (0).getNumericCellValue ();
String via = row.getCell (1).getStringCellValue ();
String userName = row.getCell (2).getStringCellValue ();
String userPassword = row.getCell (3).getStringCellValue ();
String phone = row.getCell (4).getStringCellValue ();
String address = row.getCell (5).getStringCellValue ();
String userEmail = row.getCell (6).getStringCellValue ();
Double balance = row.getCell (7).getNumericCellValue ();
String payPwd = row.getCell (8).getStringCellValue ();
User user = new User ();
user.setUserId (userId);
user.setVia (via);
user.setUserName (userName);
user.setUserPassword (userPassword);
user.setPhone (phone);
user.setAddress (address);
user.setUserEmail (userEmail);
user.setBalance (balance);
user.setPayPwd (payPwd);
list.add (user);
}
workbook.close ();
} catch (IOException e) {
e.printStackTrace ();
}
return list;
}
}
3.3测试
controller层
package com.controller;
import com.excel.ReadXLS;
import com.excel.WriteXLS;
import com.pojo.User;
import com.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import java.util.List;
@RestController
public class ExcelController {
@Autowired
private ReadXLS readXLS;
@Autowired
private WriteXLS writeXLS;
@Autowired
private UserService userService;
@RequestMapping("/writeExcel")
public String WriteExcel(){
List<User> userList = userService.selectAllUser ();
System.out.println (userList);
writeXLS.exportExcel (userList);
return "成功";
}
@RequestMapping("/readExcel")
public String ReadExcel(){
List<User> userList = readXLS.importXLS ();
System.out.println (userList);
return "成功";
}
}
测试结果
