feat: SAX 解析 excel

backend/src/main/java/io/dataease/commons/utils/ExcelReaderUtil.java

+package io.dataease.commons.utils;
+import com.google.gson.Gson;
+import io.dataease.datasource.dto.TableFiled;
+
+import java.io.FileInputStream;
+import java.io.InputStream;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+public class ExcelReaderUtil {
+    //excel2003扩展名
+    public static final String EXCEL03_EXTENSION = ".xls";
+    //excel2007扩展名
+    public static final String EXCEL07_EXTENSION = ".xlsx";
+
+    public static void sendRows(String filePath, String sheetName, int sheetIndex, int curRow, List<String> cellList) {
+        StringBuffer oneLineSb = new StringBuffer();
+        oneLineSb.append(filePath);
+        oneLineSb.append("--");
+        oneLineSb.append("sheet" + sheetIndex);
+        oneLineSb.append("::" + sheetName);//加上sheet名
+        oneLineSb.append("--");
+        oneLineSb.append("row" + curRow);
+        oneLineSb.append("::");
+
+        // map.put(cellList.get(9),cellList.get(0)) ;
+
+        for (String cell : cellList) {
+            oneLineSb.append(cell.trim());
+            oneLineSb.append("|");
+        }
+        String oneLine = oneLineSb.toString();
+        if (oneLine.endsWith("|")) {
+            oneLine = oneLine.substring(0, oneLine.lastIndexOf("|"));
+        }// 去除最后一个分隔符
+
+        System.out.println(oneLine);
+    }
+
+    /**
+     * 读取excel文件路径
+     * @param fileName 文件路径
+     * @throws Exception
+     */
+    public static void readExcel(String fileName, InputStream inputStream) throws Exception {
+        if (fileName.endsWith(EXCEL03_EXTENSION)) { //处理excel2003文件
+            ExcelXlsReader excelXls=new ExcelXlsReader();
+            excelXls.process(inputStream);
+            System.out.println(excelXls.totalSheets.size());
+            System.out.println(excelXls.totalSheets.get(0).getSheetName());
+            for (TableFiled field : excelXls.totalSheets.get(0).getFields()) {
+                System.out.println(new Gson().toJson(field));
+            }
+            System.out.println(excelXls.totalSheets.get(0).getData().get(0));
+
+        } else if (fileName.endsWith(EXCEL07_EXTENSION)) {//处理excel2007文件
+            ExcelXlsxReader excelXlsxReader = new ExcelXlsxReader();
+            excelXlsxReader.process(inputStream);
+            System.out.println(excelXlsxReader.totalSheets.size());
+            System.out.println(excelXlsxReader.totalSheets.get(0).getSheetName());
+            for (TableFiled field : excelXlsxReader.totalSheets.get(0).getFields()) {
+                System.out.println(new Gson().toJson(field));
+            }
+            System.out.println(excelXlsxReader.totalSheets.get(0).getData().get(0));
+
+        } else {
+            throw new Exception("文件格式错误，fileName的扩展名只能是xls或xlsx。");
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        ExcelReaderUtil.readExcel("111.xls", new FileInputStream("/Users/taojinlong/Desktop/111.xls"));
+    }
+}

backend/src/main/java/io/dataease/datasource/provider/JdbcProvider.java

@@ -185,6 +185,9 @@ public class JdbcProvider extends DatasourceProvider {
             field.setFieldType(t);
             field.setFieldSize(metaData.getColumnDisplaySize(j + 1));
             if(t.equalsIgnoreCase("LONG")){field.setFieldSize(65533);} //oracle LONG
+            if(StringUtils.isNotEmpty(t) && t.toLowerCase().contains("date") && field.getFieldSize() < 50 ){
+                field.setFieldSize(50);
+            }
             fieldList.add(field);
         }
         return fieldList;

backend/src/main/java/io/dataease/dto/dataset/ExcelSheetData.java

+package io.dataease.dto.dataset;
+
+import io.dataease.datasource.dto.TableFiled;
+import lombok.Data;
+
+import java.util.List;
+
+@Data
+public class ExcelSheetData {
+    private String sheetName;
+    private List<List<String>> data;
+    private List<TableFiled> fields;
+}

backend/src/main/java/io/dataease/service/dataset/DataSetTableService.java

@@ -1012,7 +1012,7 @@ public class DataSetTableService {
     public Map<String, Object> excelSaveAndParse(MultipartFile file, String tableId) throws Exception {
         String filename = file.getOriginalFilename();
         // parse file
-        Map<String, Object> fileMap = parseExcel(filename, file.getInputStream(), true);
+        Map<String, Object> fileMap = parseExcel2(filename, file.getInputStream(), true);
         if (StringUtils.isNotEmpty(tableId)) {
             List<DatasetTableField> datasetTableFields = dataSetTableFieldsService.getFieldsByTableId(tableId);
             datasetTableFields.sort((o1, o2) -> {
@@ -1038,6 +1038,52 @@ public class DataSetTableService {
         return map;
     }
 
+    private Map<String, Object> parseExcel2(String filename, InputStream inputStream, boolean isPreview) throws Exception {
+        String suffix = filename.substring(filename.lastIndexOf(".") + 1);
+        List<TableFiled> fields = new ArrayList<>();
+        List<List<String>> data = new ArrayList<>();
+        List<Map<String, Object>> jsonArray = new ArrayList<>();
+        List<String> sheets = new ArrayList<>();
+        if (StringUtils.equalsIgnoreCase(suffix, "xls")) {
+            ExcelXlsReader excelXlsReader = new ExcelXlsReader();
+            excelXlsReader.process(inputStream);
+            fields = excelXlsReader.totalSheets.get(0).getFields();
+            data = excelXlsReader.totalSheets.get(0).getData();
+            sheets = excelXlsReader.totalSheets.stream().map(ExcelSheetData::getSheetName).collect(Collectors.toList());
+        }
+        if (StringUtils.equalsIgnoreCase(suffix, "xlsx")) {
+            ExcelXlsxReader excelXlsxReader = new ExcelXlsxReader();
+            excelXlsxReader.process(inputStream);
+            fields = excelXlsxReader.totalSheets.get(0).getFields();
+            data = excelXlsxReader.totalSheets.get(0).getData();
+            sheets = excelXlsxReader.totalSheets.stream().map(ExcelSheetData::getSheetName).collect(Collectors.toList());
+        }
+
+        String[] fieldArray = fields.stream().map(TableFiled::getFieldName).toArray(String[]::new);
+
+        // 校验excel字段是否重名
+        if (checkIsRepeat(fieldArray)) {
+            DataEaseException.throwException(Translator.get("i18n_excel_field_repeat"));
+        }
+
+        if (CollectionUtils.isNotEmpty(data)) {
+            jsonArray = data.stream().map(ele -> {
+                Map<String, Object> map = new HashMap<>();
+                for (int i = 0; i < ele.size(); i++) {
+                    map.put(fieldArray[i], ele.get(i));
+                }
+                return map;
+            }).collect(Collectors.toList());
+        }
+        inputStream.close();
+
+        Map<String, Object> map = new HashMap<>();
+        map.put("fields", fields);
+        map.put("data", jsonArray);
+        map.put("sheets", sheets);
+        return map;
+    }
+
     private Map<String, Object> parseExcel(String filename, InputStream inputStream, boolean isPreview) throws Exception {
         String suffix = filename.substring(filename.lastIndexOf(".") + 1);
         List<TableFiled> fields = new ArrayList<>();
@@ -1191,6 +1237,7 @@ public class DataSetTableService {
         return map;
     }
 
+
     private String readCell(Cell cell, boolean cellType, TableFiled tableFiled) {
         if (cell == null) {
             return "";