java解析excel文件的方法

建立工程前需要导入poi包。poi相关jar包下载地址：

1.解析.xlsx后缀名的的excel文件：

package com.shuai.hello;  
  
import java.io.fileinputstream;  
import java.io.ioexception;  
import java.io.inputstream;  
  
import org.apache.poi.hssf.usermodel.hssfcell;  
import org.apache.poi.xssf.usermodel.xssfcell;  
import org.apache.poi.xssf.usermodel.xssfrow;  
import org.apache.poi.xssf.usermodel.xssfsheet;  
import org.apache.poi.xssf.usermodel.xssfworkbook;  
  
public class readexcel {  
  public static void main(string[] args) throws ioexception {  
      
    //file file = new file("c:/users.xlsx");  
    inputstream stream = new fileinputstream("c:/users.xlsx");  
  
    xssfworkbook xssfworkbook = new xssfworkbook(stream);  
    xssfsheet xssfsheet = xssfworkbook.getsheetat(0);  
  
    int rowstart = xssfsheet.getfirstrownum();  
    int rowend = xssfsheet.getlastrownum();  
    for(int i=rowstart;i<=rowend;i++)  
    {  
      xssfrow row = xssfsheet.getrow(i);  
      if(null == row) continue;  
      int cellstart = row.getfirstcellnum();  
      int cellend = row.getlastcellnum();  
  
      for(int k=cellstart;k<=cellend;k++)  
      {  
        xssfcell cell = row.getcell(k);  
        if(null==cell) continue;  
  
  
        switch (cell.getcelltype())  
        {  
          case hssfcell.cell_type_numeric: // 数字  
            system.out.print(cell.getnumericcellvalue()  
                + "\t");  
            break;  
          case hssfcell.cell_type_string: // 字符串  
            system.out.print(cell.getstringcellvalue()  
                + "\t");  
            break;  
          case hssfcell.cell_type_boolean: // boolean  
            system.out.println(cell.getbooleancellvalue()  
                + "\t");  
            break;  
          case hssfcell.cell_type_formula: // 公式  
            system.out.print(cell.getcellformula() + "\t");  
            break;  
          case hssfcell.cell_type_blank: // 空值  
            system.out.println(" ");  
            break;  
          case hssfcell.cell_type_error: // 故障  
            system.out.println(" ");  
            break;  
          default:  
            system.out.print("未知类型  ");  
            break;  
        }  
  
      }  
      system.out.print("\n");  
    }  
  }  
}  
 
/*string filetype = filepath.substring(filepath.lastindexof(".") + 1, filepath.length()); 
inputstream stream = new fileinputstream(filepath); 
workbook wb = null; 
if (filetype.equals("xls")) { 
 wb = new hssfworkbook(stream); 
} else if (filetype.equals("xlsx")) { 
 wb = new xssfworkbook(stream); 
} else { 
 system.out.println("您输入的excel格式不正确"); 
}*/  

2.解析后缀为.xls的excel文件：

package com.shuai.hello;  
  
import java.io.file;  
import java.io.fileinputstream;  
import java.io.ioexception;  
  
import org.apache.poi.hssf.usermodel.hssfcell;  
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;  
  
public class readxls {  
  public static void main(string[] args) throws ioexception, ioexception {  
    file file = new file("c:/users/dengta/desktop/ok1.xls");  
    poifsfilesystem poifsfilesystem = new poifsfilesystem(new fileinputstream(file));  
    hssfworkbook hssfworkbook = new hssfworkbook(poifsfilesystem);  
    hssfsheet hssfsheet = hssfworkbook.getsheetat(0);  
  
    int rowstart = hssfsheet.getfirstrownum();  
    int rowend = hssfsheet.getlastrownum();  
    for(int i=rowstart;i<=rowend;i++)  
    {  
      hssfrow row = hssfsheet.getrow(i);  
      if(null == row) continue;  
      int cellstart = row.getfirstcellnum();  
      int cellend = row.getlastcellnum();  
  
      for(int k=cellstart;k<=cellend;k++)  
      {  
        hssfcell cell = row.getcell(k);  
        if(null==cell) continue;  
        //system.out.print("" + k + " ");  
        //system.out.print("type:"+cell.getcelltype());  
  
        switch (cell.getcelltype())  
        {  
          case hssfcell.cell_type_numeric: // 数字  
                  system.out.print(cell.getnumericcellvalue()  
                + "  ");  
            break;  
          case hssfcell.cell_type_string: // 字符串  
            system.out.print(cell.getstringcellvalue()  
                + "  ");  
            break;  
          case hssfcell.cell_type_boolean: // boolean  
            system.out.println(cell.getbooleancellvalue()  
                + "  ");  
            break;  
          case hssfcell.cell_type_formula: // 公式  
            system.out.print(cell.getcellformula() + "  ");  
            break;  
          case hssfcell.cell_type_blank: // 空值  
            system.out.println(" ");  
            break;  
          case hssfcell.cell_type_error: // 故障  
            system.out.println(" ");  
            break;  
          default:  
            system.out.print("未知类型  ");  
            break;  
        }  
  
      }  
      system.out.print("\n");  
    }  
  }  
} 

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