1.添加依赖jar包
maven配置：
<!-- poi being -->
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml-schemas</artifactId>
<version>3.9</version>
</dependency>
<!-- poi end -->
或者，不是maven项目的话，直接在buildpath中添加jar包：
2.读取excel简单例子
package com.demo.excel.execute;
import java.io.File;
import java.io.FileInputStream;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
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.ss.usermodel.WorkbookFactory;
import com.demo.excel.modle.example.Book;
/**
*
* @ClassName: ReadBooks
* @Description: 读取图书列表excel
* @author LCL
* @date 2016年9月2日
*
*/
public class ReadBooks {
private Workbook workbook;
private Sheet sheet;
private Row row;
private List<Book> books = new ArrayList<Book>();
/**
*
* @Title: readFile
* @Description: 将文件读入内存
* @param @param
* filePath 文件路径
* @return void null
*/
public void readFile(String filePath) {
try {
File excelFile = new File(filePath);
FileInputStream is = new FileInputStream(excelFile);
workbook = WorkbookFactory.create(is);
sheet = workbook.getSheetAt(0);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
*
* @Title: readLine
* @Description: 读取每一行的图书信息
* @return void null
*/
public void readLine() {
Iterator<Row> rows = sheet.rowIterator();
while (rows.hasNext()) {
row = (Row) rows.next();
if (row.getRowNum() ==0 ) {
continue;
}
Book book = new Book();
Iterator<Cell> cells = row.cellIterator();
while (cells.hasNext()) {
Cell cell = (Cell) cells.next();
if (cell.getCellType() == Cell.CELL_TYPE_NUMERIC && cell.getColumnIndex() == 0) {
book.setCode((int)cell.getNumericCellValue());
continue;
}
if (cell.getColumnIndex() == 1) {
book.setName(cell.getStringCellValue());
continue;
}
if (cell.getColumnIndex() == 2) {
book.setPress(cell.getStringCellValue());
continue;
}
if (cell.getColumnIndex() == 3) {
book.setDate(cell.getDateCellValue());
}
}
books.add(book);
}
}
public List<Book> getBooks() {
return books;
}
}
Book.java
package com.demo.excel.modle.example;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
public class Book {
private int code;
private String name;
private String press;
private Date date;
public int getCode() {
return code;
}
public void setCode(int code) {
this.code = code;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPress() {
return press;
}
public void setPress(String press) {
this.press = press;
}
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
@Override
public String toString() {
return "Book [code=" + code + ", name=" + name + ", press=" + press + ", date=" + formatDate(date) + "]";
}
private String formatDate(Date date) {
DateFormat format = new SimpleDateFormat("yyyy/MM/dd");
return format.format(date);
}
}
测试：
package com.demo.excel.db;
import com.demo.excel.execute.ReadBooks;
import junit.framework.TestCase;
public class ReadBooksTest extends TestCase {
private final String path = "E:/lichenli/storage/file/book.xlsx";
public void testReadBook() {
ReadBooks readbooks = new ReadBooks();
readbooks.readFile(path);
readbooks.readLine();
assertEquals(6, readbooks.getBooks().size());
}
}
文件内容