Eolink上传文件到Java后台进行处理的示例代码
作者：java李杨勇
这篇文章主要介绍了Eolink上传文件到Java后台进行处理,这里是上传的excel表格数据并转换为java集合对象、然后进行业务逻辑处理判断最后保存到数据库 ，需要的朋友可以参考下
Eolink上传文件配置：
接收文件请求并进行业务处理
@RequestMapping(value = "shangchuan")
@ResponseBody
public synchronized R fileUpload(HttpServletRequest request) {
try {
String[] fields = { "gddname", "lineName", "gddgpsjd", "gddgpswd", "remarks" };
List<DqGddname> list = ExcelImportUtil.getImportData(fields, DqGddname.class, request);
for (DqGddname dqGddname : list) {
EntityWrapper<DqLinename> entityWrapper = new EntityWrapper<DqLinename>();
Wrapper<DqLinename> wrapper = entityWrapper.eq("linename", dqGddname.getLineName());
DqLinename dqLinename = dqLinenameService.selectOne(wrapper);
if (dqLinename == null) {
return R.error("线路数据不存在");
} else {
dqGddname.setLineid(dqLinename.getId());
}
if (!"".equals(dqGddname.getGddgpsjd()) || !"".equals(dqGddname.getGddgpswd())) {
Double pox = Double.parseDouble(dqGddname.getGddgpsjd());
Double poy = Double.parseDouble(dqGddname.getGddgpswd());
Gps gps = PositionUtil.gps84_To_Gcj02(poy, pox);
Double px = gps.getWgLat();
Double py = gps.getWgLon();
dqGddname.setGpsGcjWd(String.valueOf(px));
dqGddname.setGpsGcjJd(String.valueOf(py));
}
EntityWrapper<DqGddname> eWrapper = new EntityWrapper<>();
eWrapper.eq("lineid", dqGddname.getLineid()).eq("gddname", dqGddname.getGddname());
DqGddname temp = dqGddnameService.selectOne(eWrapper);
if (temp != null) {
dqGddname.setId(temp.getId());
}
}
dqGddnameService.insertOrUpdateBatch(list);
return R.ok();
} catch (Exception e) {
logger.error("ERROR：", e);
return R.error("上传失败");
}
}
public static <T> List<T> getImportData(String[] fields, Class<T> clz, HttpServletRequest request)
throws IOException, InvalidFormatException, InstantiationException, IllegalAccessException,
NoSuchMethodException, InvocationTargetException, NoSuchFieldException, SecurityException {
return ExcelImportUtil.getImportData(0, fields, clz, request);
}
/**
* 从上传文件中解析出数据对象
* @param sheetIndex 第几个sheet
* @param fields 解析字段
* @param clz 解析对象
* @param request
* @return
* @throws IOException
* @throws InvalidFormatException
* @throws InstantiationException
* @throws IllegalAccessException
* @throws NoSuchMethodException
* @throws InvocationTargetException
* @throws NoSuchFieldException
* @throws SecurityException
*/
public static <T> List<T> getImportData(int sheetIndex, String[] fields, Class<T> clz, HttpServletRequest request)
throws IOException, InvalidFormatException, InstantiationException, IllegalAccessException,
NoSuchMethodException, InvocationTargetException, NoSuchFieldException, SecurityException {
List<T> datas = new ArrayList<>();
Workbook wb = getWorkbookFromRequest(request);
Sheet sheet = wb.getSheetAt(sheetIndex);
// 获取总行数
int rows = sheet.getPhysicalNumberOfRows();
if (rows >= 2) {
for (int start = 1; start < rows; start++) {
// 从第三行开始逐行获取
Row row = sheet.getRow(start);
if (row == null) {
continue;
}
if (fields != null) {
T obj = clz.getDeclaredConstructor().newInstance();
for (int i = 0; i < fields.length; i++) {
Cell cell = row.getCell(i);
String cellValue = getCellValue(cell);
String fieldName = fields[i];
Field field = null;
try {
field = obj.getClass().getDeclaredField(fieldName);
} catch (NoSuchFieldException e) {
field = obj.getClass().getSuperclass().getDeclaredField(fieldName);
}
field.setAccessible(true);
setFieldValue(field, obj, cellValue);
}
datas.add(obj);
}
}
}
return datas;
}
/**
* 从上传文件中第一个sheet解析出数据对象
* @param fields
* @param clz
* @param request
* @return
* @throws IOException
* @throws InvalidFormatException
* @throws InstantiationException
* @throws IllegalAccessException
* @throws NoSuchMethodException
* @throws InvocationTargetException
* @throws NoSuchFieldException
* @throws SecurityException
*/
public static <T> List<T> getImportData(String[] fields, Class<T> clz, HttpServletRequest request)
throws IOException, InvalidFormatException, InstantiationException, IllegalAccessException,
NoSuchMethodException, InvocationTargetException, NoSuchFieldException, SecurityException {
return ExcelImportUtil.getImportData(0, fields, clz, request);
}
private static String getCellValue(Cell cell) {
String result = "";
if (cell != null) {
switch (cell.getCellType()) {
// 数字类型 +日期类型
case HSSFCell.CELL_TYPE_NUMERIC:
if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
SimpleDateFormat sdf = null;
if (cell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("h:mm")) {
sdf = new SimpleDateFormat("HH:mm");
} else {// 日期
sdf = new SimpleDateFormat("yyyy-MM-dd");
}
Date date = cell.getDateCellValue();
result = sdf.format(date);
} else if (cell.getCellStyle().getDataFormat() == 58) {
// 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd");
double value = cell.getNumericCellValue();
Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value);
result = sdf.format(date);
} else {
HSSFDataFormatter dataFormatter = new HSSFDataFormatter();
result = String.valueOf(dataFormatter.formatCellValue(cell));
}
break;
// String类型
case HSSFCell.CELL_TYPE_STRING:
result = String.valueOf(cell.getStringCellValue());
break;
case HSSFCell.CELL_TYPE_BLANK:
result = "";
default:
result = null;
break;
}
}
return result;
}
private static void setFieldValue(Field field, Object obj, String value) throws IllegalAccessException {
Class<?> typeClass = field.getType();
if (typeClass == int.class || typeClass == Integer.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, 0);
} else {
field.set(obj, Integer.valueOf(value));
}
} else if (typeClass == short.class || typeClass == Short.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, 0);
} else {
field.set(obj, Short.valueOf(value));
}
} else if (typeClass == byte.class || typeClass == Byte.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, 0);
} else {
field.set(obj, Byte.valueOf(value));
}
} else if (typeClass == double.class || typeClass == Double.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, 0);
} else {
field.set(obj, Double.valueOf(value));
}
} else if (typeClass == long.class || typeClass == Long.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, 0L);
} else {
field.set(obj, Long.valueOf(value));
}
} else if (typeClass == String.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, "");
} else {
field.set(obj, value);
}
} else if (typeClass == boolean.class || typeClass == Boolean.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, false);
} else {
field.set(obj, Boolean.valueOf(value));
}
} else if (typeClass == BigDecimal.class) {
if (StringUtils.isEmpty(value)) {
field.set(obj, BigDecimal.ZERO);
} else {
field.set(obj, new BigDecimal(value));
}
} else if (typeClass == Date.class) {
field.set(obj, StringUtils.isEmpty(value) ? null : DateUtils.parseDate(value));
} else {
field.set(obj, value);
}
}
这里是上传的excel表格数据并转换为java集合对象、然后进行业务逻辑处理判断最后保存到数据库
到此这篇关于Eolink上传文件到Java后台进行处理的文章就介绍到这了,更多相关Eolink上传文件内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！