excel转换成oracle建表脚本

 package excel2sql;

 import java.io.File;
 import java.io.FileInputStream;
 import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.util.ArrayList;
 import java.util.List;

 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.ss.usermodel.Row;

 public class Excel2Sql {

     private HSSFWorkbook workbook;// 工作簿

     /**
      * 构造器-获取工作簿
      * @param file
      */
     public Excel2Sql(File file) {
         try {
             // 获取工作薄workbook
             workbook = new HSSFWorkbook(new FileInputStream(file));
         } catch (FileNotFoundException e) {
             e.printStackTrace();
         } catch (IOException e) {
             e.printStackTrace();
         }
     }

     /**
      * 获取sheet中所有数据
      * @param sheetNumber
      * @return
      */
     private List<List<Object>> getSheetDatas(int sheetNumber) {

         //sheet中数据结果集
         List<List<Object>> result = new ArrayList<List<Object>>();

         // 获得指定的sheet
         HSSFSheet sheet = workbook.getSheetAt(sheetNumber);

         // 获得sheet总行数
         int rowCount = sheet.getLastRowNum();

         if (rowCount < 1) {
             return result;
         }

         // 遍历行row
         for (int rowIndex = 0; rowIndex <= rowCount; rowIndex++) {
             // 获得行对象
             HSSFRow row = sheet.getRow(rowIndex);
             if (null != row) {
                 List<Object> rowData = new ArrayList<Object>();
                 // 获取对应行单元格总数
                 int cellCount = row.getLastCellNum();
                 // 遍历列cell
                 for (int cellIndex = 0; cellIndex < cellCount; cellIndex++) {
                     //Missing cells are returned as null, Blank cells are returned as normal
                     HSSFCell cell = row.getCell(cellIndex, Row.RETURN_NULL_AND_BLANK);
                     // 获得指定单元格中的数据
                     Object cellValue = this.getCellValue(cell);

                     rowData.add(cellValue);
                 }
                 result.add(rowData);
             }
         }

         return result;
     }

     /**
      * 获取cell值
      * @param cell
      * @return
      */
     private Object getCellValue(HSSFCell cell) {
         Object result = null;
         if (cell != null) {
             // 单元格类型：Numeric:0;String:1;Formula:2;Blank:3;Boolean:4;Error:5
             switch (cell.getCellType()) {
             case HSSFCell.CELL_TYPE_NUMERIC:
                 result = cell.getNumericCellValue();
                 break;
             case HSSFCell.CELL_TYPE_STRING:
                 result = cell.getStringCellValue();
                 break;
             case HSSFCell.CELL_TYPE_FORMULA:
                 result = cell.getNumericCellValue();
                 break;
             case HSSFCell.CELL_TYPE_BLANK:
                 result = null;
                 break;
             case HSSFCell.CELL_TYPE_BOOLEAN:
                 result = cell.getBooleanCellValue();
                 break;
             case HSSFCell.CELL_TYPE_ERROR:
                 result = null;
                 break;
             }
         }
         return result;
     }

     /**
      * excel格式转换成建表脚本
      * @param tableName 表名
      * @param tableComment 表注释
      * @return SQL 建库脚本
      */
     public String excel2Sql(String tableName, String tableComment) {
         //获取sheet数据
         List<List<Object>> datas = this.getSheetDatas(0);
         //主键
         String primary = "";
         //字段列
         int column = 0;
         //类型列
         int type = 1;
         //是否为空列
         int cannull = 2;
         //默认值列
         int defaultValue = 3;
         //是否主键
         int pk = 4;
         //注释列
         int comment = 5;
         //注释
         StringBuffer comments = new StringBuffer();
         //表名注释
         comments.append("comment on table "+tableName+" is '"+tableComment+"';\n");
         //建表SQL语句
         StringBuffer sql = new StringBuffer();
         sql.append("create table " + tableName + "(\n");
         //前两行为说明
         for (int i = 2; i < datas.size(); i++) {
             //对应行数据
             List<Object> row = datas.get(i);
             //字段项 0
             sql.append(String.valueOf(row.get(column)) + " ");
             //类型 1
             sql.append(String.valueOf(row.get(type)) + " ");
             //默认值 3
             if(null!=row.get(defaultValue)){
                 sql.append(" default " +row.get(defaultValue));
             }
             //是否为空 2
             if("N".equalsIgnoreCase(String.valueOf(row.get(cannull)))){
                 sql.append(" not null");
             }
             if(i < datas.size() - 1){
                 sql.append(",");
             }
             //是否主键 4
             if(null != row.get(pk) && "Y".equalsIgnoreCase(String.valueOf(row.get(pk)))){
                 //设置主键
                 primary = "alter table "+tableName+" add constraint PK_"+tableName+"_ID primary key (" + String.valueOf(row.get(column))                          + ");";
             }
             //增加注释
             comments.append("comment on column ").append(tableName).append(".").append(String.valueOf(row.get(column))).append(" is '").                        append(String.valueOf(row.get(comment))).append("';\n");
             sql.append("\n");
         }
         //结束
         sql.append(");\n");
         //添加注释
         sql.append(comments);
         //添加主键
         sql.append(primary);
         return sql.toString();
     }
 }

excel示例：