Merge branch 'dev-szl' into 'dev'

导入公里总结报告 -shizhilong

See merge request !39

jeecg-module-system/src/main/java/org/jeecg/modules/utils/ExcelAnalysisUtils.java

+package org.jeecg.modules.utils;
+
+import java.io.InputStream;
+import java.math.BigDecimal;
+import java.text.SimpleDateFormat;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import org.apache.poi.ss.usermodel.Cell;
+import org.apache.poi.ss.usermodel.DateUtil;
+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.xssf.usermodel.XSSFWorkbook;
+
+/**
+ * @author admin
+ */
+public class ExcelAnalysisUtils {
+
+    /**
+     * @Description：获取IO流中的数据，组装成List<List<Object>>对象
+     */
+    public static List<List<Object>> getListByExcel(InputStream in) throws Exception {
+        List<List<Object>> list;
+
+        //创建Excel工作薄
+        Workbook work = new XSSFWorkbook(in);
+        Sheet sheet;  //页数
+        Row row;  //行数
+        Cell cell;  //列数
+
+        list = new ArrayList<>();
+
+        //遍历Excel中所有的sheet
+        for (int i = 0; i < work.getNumberOfSheets(); i++) {
+            sheet = work.getSheetAt(i);
+            if (sheet == null) {
+                continue;
+            }
+
+            //遍历当前sheet中的所有行
+            for (int j = sheet.getFirstRowNum(); j <= sheet.getLastRowNum(); j++) {
+                row = sheet.getRow(j);
+                if (row == null) {
+                    continue;
+                }
+
+                //遍历所有的列
+                List<Object> li = new ArrayList<>();
+                for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {
+                    cell = row.getCell(y);
+                    li.add(getValue(cell));
+                }
+                list.add(li);
+            }
+        }
+
+        return list;
+
+    }
+    /**
+     * 对表格中数值进行格式化   解决excel类型问题，获得数值
+     */
+    public static String getValue(Cell cell) {
+        String value = "";
+        if(null == cell) {
+            return value;
+        }
+        switch(cell.getCellType()) {
+            //数值型
+            case NUMERIC:
+                if(DateUtil.isCellDateFormatted(cell)) {
+                    //如果是date类型则 ，获取该cell的date值
+                    Date date = DateUtil.getJavaDate(cell.getNumericCellValue());
+                    SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
+                    value = format.format(date);
+                }
+                else {// 纯数字
+                    BigDecimal big = BigDecimal.valueOf(cell.getNumericCellValue());
+                    String s = "0";
+                    value = big.toString();
+                    //解决1234.0  去掉后面的.0
+                    if(null != value && !"".equals(value.trim())) {
+                        String[] item = value.split("[.]");
+                        if(1 < item.length && s.equals(item[1])) {
+                            value = item[0];
+                        }
+                    }
+                }
+                break;
+            //字符串类型
+            case STRING:
+                value = cell.getStringCellValue();
+                break;
+            // 公式类型
+            case FORMULA:
+                //读公式计算值
+                value = String.valueOf(cell.getNumericCellValue());
+                String nan = "NaN";
+                if(nan.equals(value)) {// 如果获取的数据值为非法值,则转换为获取字符串
+                    value = cell.getStringCellValue();
+                }
+                break;
+            // 布尔类型
+            case BOOLEAN:
+                value = " " + cell.getBooleanCellValue();
+                break;
+            default:
+                value = cell.getStringCellValue();
+        }
+        String ss = "null";
+        if(ss.endsWith(value.trim())) {
+            value = "";
+        }
+        return value;
+    }
+}