EasyExcel根据对应的实体类模板完成多个sheet的写入与读取
1.展示模板一的实体类
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentRowHeight;
import com.alibaba.excel.annotation.write.style.HeadRowHeight;
import io.swagger.annotations.ApiModel;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import javax.validation.constraints.NotBlank;
@Data
@NoArgsConstructor
@AllArgsConstructor
@ApiModel(value="RegObject对象", description="不动产单元")
//表头行高
@HeadRowHeight(30)
//内容单元格行高
@ContentRowHeight(25)
public class RegObject {
@ExcelProperty(value = "客体类型", index = 0)
@ColumnWidth(20)
@NotBlank(message = "客体类型不能为空")
private String propertyType;
@ExcelProperty(value = "不动产单元号", index = 1)
@ColumnWidth(30)
@NotBlank(message = "不动产单元号不能为空")
private String regNumber;
}
2.展示模板二的实体类
import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.format.DateTimeFormat;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentRowHeight;
import com.alibaba.excel.annotation.write.style.HeadRowHeight;
import io.swagger.annotations.ApiModel;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import javax.validation.constraints.NotBlank;
import java.util.Date;
@Data
@NoArgsConstructor
@AllArgsConstructor
@ApiModel(value="IncomeInfo对象", description="受理信息")
//表头行高
@HeadRowHeight(30)
//内容单元格行高
@ContentRowHeight(25)
public class IncomeInfo {
@ExcelProperty(value = "受理人", index = 0)
@ColumnWidth(20)
@NotBlank(message = "受理人不能为空")
private String incomeMan;
@ExcelProperty(value = "审批流程", index = 1)
@ColumnWidth(20)
@NotBlank(message = "审批流程不能为空")
private String workId;
@ExcelProperty(value = "坐落", index = 2)
@ColumnWidth(20)
@NotBlank(message = "坐落不能为空")
private String seatName;
// @ExcelProperty(value = "结束时间", index = 3)
// @ColumnWidth(20)
// @NotBlank(message = "结束时间不能为空")
// @DateTimeFormat(value = "yyyy年MM月dd日 HH时mm分ss秒")
// private String endDate;
@ExcelProperty(value = "结束时间", index = 3)
@ColumnWidth(20)
@NotBlank(message = "结束时间不能为空")
@DateTimeFormat(value = "yyyy-MM-dd HH:mm:ss")
private Date endDate;
}
3.展示easyExcel实现写入功能的代码
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.write.builder.ExcelWriterBuilder;
import com.alibaba.excel.write.metadata.WriteSheet;
import com.guan.study.easyExcelDemo.IncomeInfo;
import com.guan.study.easyExcelDemo.RegObject;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class WriteExcelDemo03 {
private static final String PATH = "D:\\WorkDirTest2\\测试.xls";
private static List<String> list = new ArrayList<>();
public static void main(String[] args) {
list.add("不动产单元信息");
list.add("受理信息");
//如果文件存在就删除
Path path = Paths.get(PATH);
if (Files.exists(path)) {
try {
Files.delete(path);
} catch (IOException e) {
System.out.println("无法删除文件：" + e.getMessage());
}
}
ExcelWriterBuilder write = EasyExcel.write(PATH);
// 创建ExcelWriter对象
ExcelWriter excelWriter = write.build();
// 向Excel的同一个Sheet重复写入数据
for (int i = 0; i < list.size(); i++) {
// 创建Sheet对象
WriteSheet writeSheet = EasyExcel.writerSheet(list.get(i)).build();
// 设置excel模板寻求首航标题的类
writeSheet.setClazz(getTargetClass(list.get(i)));
// 设置数据到该sheet中
excelWriter.write(data(list.get(i)), writeSheet);
}
// 关闭流
excelWriter.finish();
}
/**
* 根据传入的字符串返回对应的目标类
*/
private static Class<?> getTargetClass(String str) {
switch (str) {
case "不动产单元信息":
return RegObject.class;
case "受理信息":
return IncomeInfo.class;
default:
return null;
}
}
/**
* 模拟前端传过来的数据 不动产单元信息
*/
private static List<Object> data(String str) {
SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd");
List<Object> list = new ArrayList<>();
switch (str) {
case "不动产单元信息":
RegObject regObject1 = new RegObject();
regObject1.setPropertyType("0008");
regObject1.setRegNumber("130000000001GB00001F00010001");
list.add(regObject1);
RegObject regObject2 = new RegObject();
regObject2.setPropertyType("0008");
regObject2.setRegNumber("130000000001GB00001F00010002");
list.add(regObject2);
break;
case "受理信息":
IncomeInfo info1 = new IncomeInfo();
info1.setIncomeMan("00000001");
info1.setWorkId("0001");
info1.setSeatName("130208");
//info1.setEndDate(dateFormat.format(new Date()));
info1.setEndDate(new Date());
list.add(info1);
IncomeInfo info2 = new IncomeInfo();
info2.setIncomeMan("00000001");
info2.setWorkId("0002");
info2.setSeatName("130229");
//info2.setEndDate(dateFormat.format(new Date()));
info2.setEndDate(new Date());
list.add(info2);
break;
}
return list;
}
}
4.展示D:\WorkDirTest2路径下测试.xls中的效果
5.读取excel代码
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelReader;
import com.alibaba.excel.context.AnalysisContext;
import com.alibaba.excel.event.AnalysisEventListener;
import com.alibaba.excel.read.metadata.ReadSheet;
import com.guan.study.easyExcelDemo.IncomeInfo;
import com.guan.study.easyExcelDemo.RegObject;
import java.util.ArrayList;
import java.util.List;
public class ReadExcelDemo03 {
private static List<String> list = new ArrayList<>();
public static void main(String[] args) {
list.add("不动产单元信息");
list.add("受理信息");
// 读取的excel文件路径
String filename = "D:\\WorkDirTest2\\测试.xls";
for (int i = 0; i < list.size(); i++) {
readExcel(filename, i, getTargetClass(list.get(i)));
}
//readExcel(filename, 0, RegObject.class);
//readExcel(filename, 1, IncomeInfo.class);
}
private static <T> void readExcel(String filename, int sheetNo, Class<T> clazz) {
// 构建ExcelReader对象
ExcelReader excelReader = EasyExcel.read(filename).build();
// 构建sheet对象
ReadSheet sheet = EasyExcel.readSheet(sheetNo)
.head(clazz) // 指定数据模板
.registerReadListener(new AnalysisEventListener<T>() {
// 每解析一行数据,该方法会被调用一次
@Override
public void invoke(T data, AnalysisContext context) {
System.out.println("解析数据为:" + data.toString());
}
// 全部解析完成被调用
@Override
public void doAfterAllAnalysed(AnalysisContext context) {
//System.out.println("解析完成...");
}
}).build();
// 读取sheet
excelReader.read(sheet);
// 需要自己关闭流操作,在读取文件时会创建临时文件,如果不关闭,会损耗磁盘,严重的磁盘爆掉
excelReader.finish();
}
/**
* 根据传入的字符串返回对应的目标类
*/
private static Class<?> getTargetClass(String str) {
switch (str) {
case "不动产单元信息":
return RegObject.class;
case "受理信息":
return IncomeInfo.class;
default:
return null;
}
}
}
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<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>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.7.13</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.guan</groupId>
<artifactId>EasyExcel-study</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>EasyExcel-study</name>
<description>EasyExcel-study</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-validation</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.3.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.validation/validation-api -->
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>3.1.3</version>
<exclusions>
<exclusion>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>5.2.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>5.2.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/joda-time/joda-time -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.12.5</version>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.13.2</version>
<scope>test</scope>
</dependency>
<!--swagger-->
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger2</artifactId>
<version>2.9.2</version>
</dependency>
<dependency>
<groupId>io.springfox</groupId>
<artifactId>springfox-swagger-ui</artifactId>
<version>2.9.2</version>
</dependency>
<!--lombok用来简化实体类：需要安装lombok插件-->
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.20</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.jsoup/jsoup -->
<dependency>
<groupId>org.jsoup</groupId>
<artifactId>jsoup</artifactId>
<version>1.15.3</version>
</dependency>
</dependencies>
<build>
<plugins>
<!-- Add Lombok Plugin -->
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
<annotationProcessorPaths>
<path>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.24</version>
</path>
</annotationProcessorPaths>
</configuration>
</plugin>
</plugins>
</build>
</project>