本文实例为大家分享了Java使用poi操作excel的具体代码，供大家参考，具体内容如下
依赖poi的jar包，pom.xml配置如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
|
<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/4.0.0http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>excelDemo1</groupId>
<artifactId>excelDemo1</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>excelDemo1 Maven Webapp</name>
<url>http://maven.apache.org</url>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<version>3.8</version>
</dependency>
</dependencies>
<build>
<finalName>excelDemo1</finalName>
</build>
</project>
|
相应的java测试代码分别如下：
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
|
package excelDemo1;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
public class ExcelDemo0 {
/**
* java生成excel文件并写入磁盘
*
* @author：tuzongxun
* @Title: main
* @param@param args
* @return void
* @date Apr 28,2016 7:32:52 PM
* @throws
*/
public static void main(String[] args) {
//C:\Users\tuzongxun123\Desktop桌面，windows和linux的斜杠不一样，而且java对于“/”需要转义处理，File.separator可以实现跨平台
File file = new File("C:" + File.separator + "Users" + File.separator
+ "tuzongxun123" + File.separator + "Desktop" + File.separator
+ "ioFile" + File.separator + "user.xls");
try {
OutputStream outputStream = new FileOutputStream(file);
// 创建excel文件，注意这里的hssf是excel2007及以前版本可用，2007版以后的不可用，要用xssf
HSSFWorkbook workbook = new HSSFWorkbook();
// 创建excel工作表
HSSFSheet sheet = workbook.createSheet("user");
// 为工作表增加一行
HSSFRow row = sheet.createRow(0);
// 在指定的行上增加两个单元格
row.createCell(0).setCellValue("name");
row.createCell(1).setCellValue("password");
// 调用输出流把excel文件写入到磁盘
workbook.write(outputStream);
// 关闭输出流
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
}
}
|
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
package excelDemo1;
import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.poifs.filesystem.POIFSFileSystem;
/**
* 读取excel文件
*
* @author tuzongxun123
*
*/
public class ExcelDemo2 {
public static void main(String[] agrs) {
try {
// 获取excel文件输入流
FileInputStream fileInputStream = new FileInputStream("C:"
+ File.separator + "Users" + File.separator
+ "tuzongxun123" + File.separator + "Desktop"
+ File.separator + "ioFile" + File.separator + "user.xls");
BufferedInputStream bufferedInputStream = newBufferedInputStream(
fileInputStream);
POIFSFileSystem fileSystem = new POIFSFileSystem(
bufferedInputStream);
// 获取excel文件
HSSFWorkbook hssfWorkbook = new HSSFWorkbook(fileSystem);
// 根据名称获取指定的excel工作薄
HSSFSheet sheet = hssfWorkbook.getSheet("user");
// 这里实际上可以用sheet.rowIterator()来遍历
for (int i = 1;; i++) {
HSSFRow row = sheet.getRow(i);
if (row != null) {
String nameString1 = row.getCell(0).getStringCellValue();
String password = row.getCell(i).getStringCellValue();
System.out.println("name:" + nameString1);
System.out.println("password:" + password);
bufferedInputStream.close();
} else {
bufferedInputStream.close();
return;
}
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
|
以上就是本文的全部内容，希望对大家学习java程序设计有所帮助。