修改：【空工大】解析Excel文件，自动创建数据库表和插入数据，并生成数据源

amos-boot-module/amos-boot-module-api/amos-boot-module-kgd-api/src/main/java/com/yeejoin/amos/kgd/config/ExcelTool.java

+package com.yeejoin.amos.kgd.config;
+import org.apache.commons.lang.StringUtils;
+import org.apache.poi.hssf.usermodel.HSSFWorkbook;
+import org.apache.poi.poifs.filesystem.POIFSFileSystem;
+import org.apache.poi.ss.usermodel.Cell;
+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;
+import org.springframework.web.multipart.MultipartFile;
+
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.io.InputStream;
+import java.text.NumberFormat;
+import java.util.*;
+
+
+public class ExcelTool {
+
+    private static NumberFormat numberFormat = null;
+
+    /**
+     * 解析xls和xlsx不兼容问题
+     *
+     * @param pfs
+     * @param workbook
+     * @param inputStream
+     * @return
+     */
+    public static Workbook getWorkBook(POIFSFileSystem pfs, Workbook workbook, InputStream inputStream, String filename) throws IOException {
+        if (filename.endsWith("xls")) {
+            pfs = new POIFSFileSystem(inputStream);
+            workbook = new HSSFWorkbook(pfs);
+            return workbook;
+        } else if (filename.endsWith("xlsx")) {
+            try {
+                workbook = new XSSFWorkbook(inputStream);
+                return workbook;
+            } catch (IOException e) {
+                return null;
+            }
+        } else {
+            return null;
+        }
+    }
+
+    /**
+     * 解析Excel表头
+     *
+     * @param inputStream 文件
+     * @return
+     */
+    public static List<String> readColumnsFromExcel(InputStream inputStream, String filename) throws Exception {
+        POIFSFileSystem pfs = null;
+        Workbook workbook = null;
+        try {
+            // 解析xls和xlsx不兼容问题
+            workbook = getWorkBook(pfs, workbook, inputStream, filename);
+        } catch (IOException e) {
+            e.printStackTrace();
+            throw new Exception("模板保存异常。");
+        }
+        if (workbook == null) {
+            throw new Exception("请使用模板上传文件");
+        }
+        // 拿第一个sheet表
+        Sheet sheet = workbook.getSheetAt(0);
+        // 校验sheet是否合法
+        if (Objects.isNull(sheet)) {
+            return null;
+        }
+        // 获取第一行数据（假如第一行就是列名）
+        Row sheetTitleRow = sheet.getRow(sheet.getFirstRowNum());
+        // 取出最后一列
+        short lastCellNum = sheetTitleRow.getLastCellNum();
+        List<String> sheetTitleList = new LinkedList<>();
+        for (int i = 0; i < lastCellNum; i++) {
+            // 取出每一列的名
+            String cellValue = sheetTitleRow.getCell(i).getStringCellValue();
+            sheetTitleList.add(cellValue);
+        }
+        return sheetTitleList;
+    }
+    /**
+     * 解析Excel数据
+     *
+     * @param inputStream 文件
+     * @return
+     */
+    public static List<List<String>> readDataFromExcel(InputStream inputStream, String filename) throws Exception {
+        POIFSFileSystem pfs = null;
+        Workbook workbook = null;
+        try {
+            // 解析xls和xlsx不兼容问题
+            workbook = getWorkBook(pfs, workbook, inputStream, filename);
+        } catch (IOException e) {
+            e.printStackTrace();
+            throw new Exception("模板保存异常。");
+        }
+        if (workbook == null) {
+            throw new Exception("请使用模板上传文件");
+        }
+
+        numberFormat = NumberFormat.getNumberInstance();
+
+        // 创建一个集合根据下标来确定每个单元格对应对象的什么属性
+        List<List<String>> resultList = new ArrayList<>();
+
+        // 获取表格第一个sheet的内容
+        Sheet sheetAt = workbook.getSheetAt(0);
+        // 获得sheet总行数
+        int lastRowNum = sheetAt.getLastRowNum();
+        if (lastRowNum < 1) {
+            throw new Exception("数据错误");
+        }
+        // 开始读取,不读取表头所以从第二行开始
+        for (int i = 1; i <= lastRowNum; i++) {
+            // 获取每一行
+            Row row = sheetAt.getRow(i);
+            // 行为空不读取
+            if (row == null) {
+                continue;
+            }
+            Cell cell = row.getCell(0);
+            //列为空不读取
+            if (cell == null || StringUtils.isEmpty(convertData(cell))) {
+                continue;
+            }
+            List<String> rowList = new ArrayList<>();
+            //添加数据
+            short lastCellNum = row.getLastCellNum();
+            for (int j = 0; j < lastCellNum; j++) {
+                Cell cellOne = row.getCell(j);
+                try {
+                    String item = convertData(cellOne);
+                    rowList.add(item.trim());
+                } catch (Exception e) {
+                    System.out.println("-------------------Err-----------------------");
+                    System.out.println(i + "行" + j + "列数据转换出现异常");
+                    rowList.add("");
+                }
+                resultList.add(rowList);
+            }
+            //规避行数数据后几行为空
+            if (rowList.size() < lastCellNum) {
+                for (int k = 0; k < 15 - rowList.size(); k++) {
+                    rowList.add("");
+                }
+            }
+        }
+        return resultList;
+    }
+
+    /**
+     * 表格数据转换
+     *
+     * @param cell
+     * @return
+     */
+    public static String convertData(Cell cell) {
+        String str = "";
+        switch (cell.getCellTypeEnum()) {
+            case NUMERIC:
+                //判断是否是整数
+                str = numberFormat.format(cell.getNumericCellValue());
+                break;
+            case STRING:
+                str = cell.getStringCellValue();
+                break;
+            case FORMULA:
+                try {
+                    str = String.valueOf(cell.getNumericCellValue());
+                } catch (IllegalArgumentException e) {
+                    str = String.valueOf(cell.getRichStringCellValue());
+                }
+                break;
+            default:
+                str = "";
+        }
+        return str;
+    }
+
+}

amos-boot-module/amos-boot-module-api/amos-boot-module-kgd-api/src/main/java/com/yeejoin/amos/kgd/message/model/TableFieldModel.java

+package com.yeejoin.amos.kgd.message.model;
+
+import lombok.Data;
+
+@Data
+public class TableFieldModel {
+    // 字段类型
+    private String fieldType="String";
+    // 字段名称
+    private String fieldName;
+    // 字段长度
+    private String fieldLength;
+    // 数值类型时，小数点长度
+    private String decimalPoint;
+    // 主键
+    private String primaryKey;
+    // 是否为空
+    private String isNull="1";
+    // 不为空时，需设置得值
+    private String fieldRemark;
+
+}

amos-boot-module/amos-boot-module-api/amos-boot-module-kgd-api/src/main/java/com/yeejoin/amos/kgd/message/model/TableModel.java

+package com.yeejoin.amos.kgd.message.model;
+
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class TableModel {
+    // 表名称
+    private String tableName;
+    // 表字段
+    private List<TableFieldModel> tableFields;
+}