java爬取Excel表格


package test;

import io.ExcelOperat;

import java.io.File;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

/**
 * @ProjectName: TutorDualSelectionSystem
 * @Package: test
 * @ClassName: MapNestedDemo
 * @Author: 王团结
 * @Description: 手工排课类
 * @Date: 2019/7/2 15:17
 * @Version: 1.0
 */
public class MapNestedDemo {

    public static void main(String[] args) {



        String path_01="C:\\Users\\ASUS\\Desktop\\手工排课.xls";
        String path_02="C:\\Users\\ASUS\\Desktop\\startClassPlan_fb.xls";



        //第一个文件迭代输出
        System.out.println("第一个文件迭代输出");
        System.out.println("----------------------------------------------------------------------------------------------");
        String[] put_01 = crow(path_01,true);

        //第二个文件迭代输出
        System.out.println("第二个文件迭代输出");
        System.out.println("----------------------------------------------------------------------------------------------");
        String[] put_02= crow(path_02,false);



         compare(put_01,put_02);

    }

    private static String[] crow(String path,boolean flag) {
        File file_01 = new File(path);

        String[][] excel = new String[0][];
        try {
            excel = ExcelOperat.getData(file_01, 1);
        } catch (IOException e) {
            System.out.println("--------------------------------------------------------------------------");
            System.out.println("读取错误!");
        }

        int rowLength = excel.length;
        //输出总行数
        String[] total=new String[rowLength];
        System.out.println("总行数" + rowLength);
        if(flag){
            for (int i=0;i<rowLength;i++){
                String[] split = excel[i][5].split(",");
                for(int j=0;j<split.length;j++){
                    total[i]=excel[i][2]+"|"+excel[i][1]+"|"+split[j]+"\t"+excel[i][14];
                }
            }
            return total;
        }
        for (int i = 0; i < rowLength; i++) {
           total[i]=excel[i][1]+"|"+excel[i][2]+"|"+excel[i][3]+"\t"+excel[i][13];

        }
        return total;
    }


    //比较
    private static void compare(String[] put_01,String[] put_02 ) {
        int m=0;

        System.out.println("\t\t\t手工排课.xls"+"\t\t\t\t\t\t\t\t\t\t\t"+"startClassPlan_fb.xls");
        System.out.println("序号"+"\t|课程号|课程名|班级名\t教师姓名"+"\t\t\t\t\t"+"序号"+"\t|课程号|课程名|班级名\t教师姓名");
        for(int i=0;i<put_01.length;i++){
            String[] split = put_01[i].split("\t");
          for (int j=0;j<put_02.length;j++){
              String[] split1 = put_02[j].split("\t");
              if(split[0].equals(split1[0])){
                  if(!split[1].equals(split1[1])){
                      System.out.println((m++)+"\t|" +put_01[i]+"\t\t\t\t\t"+put_02[j]);
                  }
              }

          }
        }

    }




}

 

package io;

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.text.DecimalFormat;

import java.text.SimpleDateFormat;

import java.util.ArrayList;

import java.util.Arrays;

import java.util.Date;

import java.util.List;


import org.apache.poi.hssf.usermodel.HSSFCell;

import org.apache.poi.hssf.usermodel.HSSFDateUtil;

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;

/**
 * @ProjectName: TutorDualSelectionSystem
 * @Package: io
 * @ClassName: ExcelOperat
 * @Author: 王团结
 * @Description: 读取Excel内容
 * @Date: 2019/7/2 14:39
 * @Version: 1.0
 */
public class ExcelOperat {

  main函数用来测试列的数据
public static void main(String[] args) throws Exception { File file = new File("C:\\Users\\ASUS\\Desktop\\手工排课.xls"); String[][] result = getData(file, 1); int rowLength = result.length; for (int i = 0; i < rowLength; i++) { System.out.print(result[i][14] + "\t\t"); // for (int j = 0; j < result[i].length; j++) { // // System.out.print(result[i][j] + "\t\t"); // // } System.out.println(); } } /** * 读取Excel的内容,第一维数组存储的是一行中格列的值,二维数组存储的是多少个行 * * @param file 读取数据的源Excel * @param ignoreRows 读取数据忽略的行数,比喻行头不需要读入 忽略的行数为1 * @return 读出的Excel中数据的内容 * @throws FileNotFoundException * @throws IOException */ public static String[][] getData(File file, int ignoreRows) throws FileNotFoundException, IOException { List<String[]> result = new ArrayList<String[]>(); int rowSize = 0; BufferedInputStream in = new BufferedInputStream(new FileInputStream( file)); // 打开HSSFWorkbook POIFSFileSystem fs = new POIFSFileSystem(in); HSSFWorkbook wb = new HSSFWorkbook(fs); HSSFCell cell = null; for (int sheetIndex = 0; sheetIndex < wb.getNumberOfSheets(); sheetIndex++) { HSSFSheet st = wb.getSheetAt(sheetIndex); // 第一行为标题,不取 for (int rowIndex = ignoreRows; rowIndex <= st.getLastRowNum(); rowIndex++) { HSSFRow row = st.getRow(rowIndex); if (row == null) { continue; } int tempRowSize = row.getLastCellNum() + 1; if (tempRowSize > rowSize) { rowSize = tempRowSize; } String[] values = new String[rowSize]; Arrays.fill(values, ""); boolean hasValue = false; for (short columnIndex = 0; columnIndex <= row.getLastCellNum(); columnIndex++) { String value = ""; cell = row.getCell(columnIndex); if (cell != null) { // 注意:一定要设成这个,否则可能会出现乱码 cell.setEncoding(HSSFCell.ENCODING_UTF_16); switch (cell.getCellType()) { case HSSFCell.CELL_TYPE_STRING: value = cell.getStringCellValue(); break; case HSSFCell.CELL_TYPE_NUMERIC: if (HSSFDateUtil.isCellDateFormatted(cell)) { Date date = cell.getDateCellValue(); if (date != null) { value = new SimpleDateFormat("yyyy-MM-dd") .format(date); } else { value = ""; } } else { value = new DecimalFormat("0").format(cell .getNumericCellValue()); } break; case HSSFCell.CELL_TYPE_FORMULA: // 导入时如果为公式生成的数据则无值 if (!cell.getStringCellValue().equals("")) { value = cell.getStringCellValue(); } else { value = cell.getNumericCellValue() + ""; } break; case HSSFCell.CELL_TYPE_BLANK: break; case HSSFCell.CELL_TYPE_ERROR: value = ""; break; case HSSFCell.CELL_TYPE_BOOLEAN: value = (cell.getBooleanCellValue() == true ? "Y" : "N"); break; default: value = ""; } } if (columnIndex == 0 && value.trim().equals("")) { break; } values[columnIndex] = rightTrim(value); hasValue = true; } if (hasValue) { result.add(values); } } } in.close(); String[][] returnArray = new String[result.size()][rowSize]; for (int i = 0; i < returnArray.length; i++) { returnArray[i] = (String[]) result.get(i); } return returnArray; } /** * 去掉字符串右边的空格 * * @param str 要处理的字符串 * @return 处理后的字符串 */ public static String rightTrim(String str) { if (str == null) { return ""; } int length = str.length(); for (int i = length - 1; i >= 0; i--) { if (str.charAt(i) != 0x20) { break; } length--; } return str.substring(0, length); } }

 

posted @ 2019-07-02 21:13  殇之弑梦  阅读(426)  评论(0编辑  收藏  举报