java - Maven 和 POI : package error and to compile the code

Question

我有以下代码:

    import java.io.*;
import org.apache.poi.hssf.usermodel.*;



public class CreateWorkBook 
{
   public static void main(String[] args)throws Exception 
   {
      //Create Blank workbook
      HSSFWorkbook workbook = new HSSFWorkbook(); 
      //Create file system using specific name
      FileOutputStream out = new FileOutputStream(new File("createworkbook.xlsx"));
      //write operation workbook using file out object 
      workbook.write(out);
      out.close();
      System.out.println("createworkbook.xlsx written successfully");
   }
}

但是 Eclipse 环境提示以下行:

HSSFWorkbook workbook = new HSSFWorkbook();

它说:

• HSSFWorkbook cannot be resolved to a type

我已正确加载包:import org.apache.poi.hssf.usermodel.*;

有关详细信息，请查看 pom.xml 文件:

<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 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>net.x.java</groupId>
  <artifactId>ExcelPass</artifactId>
  <packaging>jar</packaging>
  <version>1.0-SNAPSHOT</version>
  <name>ExcelPass</name>
  <url>http://maven.apache.org</url>
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>3.8.1</version>
      <scope>test</scope>
    </dependency>
    <!-- https://mvnrepository.com/artifact/org.apache.poi/poi -->
    <dependency>
    <groupId>org.apache.poi</groupId>
    <artifactId>poi</artifactId>
    <version>3.14</version>
</dependency>
  </dependencies>
  <properties>
   <maven.compiler.source>1.8</maven.compiler.source>
   <maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>

为什么这么要求？我的配置有什么问题？

感谢您的帮助。

Answer 1

从 Eclipse 中删除该项目，然后再次重新导入。这应该可以解决您的问题。