IDE：IDEA

編程語言：JAVA

controller 類

業務處理類

model 類

Controller

import com.你的路徑.ImportTaskExcel;

import org.springframework.stereotype.Service;

import org.springframework.web.bind.annotation.*;

import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

import java.io.IOException;

import java.io.InputStream;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

@RestController

@CrossOrigin

@Service

public class ProjectTaskExcelController {

//從表格導入任務;

//先將excel解析為json，然后將json數據進行處理，保存到數據庫

@RequestMapping(value = "/import_excel_task",headers = "content-type=multipart/*", method = RequestMethod.POST)

@ResponseBody

public Map importExcel(HttpServletRequest request, HttpServletResponse response, @RequestParam MultipartFile file) throws IOException {

String originalFilename = file.getOriginalFilename();

String type = file.getContentType();

System.out.println("目標文件名稱：" + originalFilename + ",目標文件類型：" + type);

InputStream is = file.getInputStream();

ImportTaskExcel importExcel = new ImportTaskExcel();

List list= importExcel.importDataFromExcel( is, originalFilename);

for(int i = 0;i

System.out.println(list.get(i).toString());

}

Map map = new HashMap<>();

map.put("list", list);

map.put("code", 0);

return map;

}

}

業務處理類

```

import org.apache.poi.hssf.usermodel.HSSFWorkbook;

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 java.io.IOException;

import java.io.InputStream;

import java.lang.reflect.Field;

import java.lang.reflect.Method;

import java.util.ArrayList;

import java.util.List;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

public class ImportTaskExcel {

private static final Logger logger = LoggerFactory.getLogger("ImportTaskExcel");

/**

* @Title: createWorkbook

* @Description: 判斷excel文件后綴名，生成不同的workbook * @param @param is

* @param @param excelFileName

* @param @return

* @param @throws IOException

* @return Workbook

* @throws

*/

public Workbook createWorkbook(InputStream is, String excelFileName) throws IOException {

if (excelFileName.endsWith(".xls")) {

return new HSSFWorkbook(is);

}else if (excelFileName.endsWith(".xlsx")) {

return new XSSFWorkbook(is);

}

return null;

}

/**

* @Title: getSheet

* @Description: 根據sheet索引號獲取對應的sheet

* @param @param workbook

* @param @param sheetIndex

* @param @return

* @return Sheet

* @throws

*/

public Sheet getSheet(Workbook workbook, int sheetIndex){

return workbook.getSheetAt(0);

}

public List importDataFromExcel(InputStream is, String excelFileName){

List list = new ArrayList();

try {

//創建工作簿

Workbook workbook = this.createWorkbook(is, excelFileName);

//創建工作表sheet

Sheet sheet = this.getSheet(workbook, 0);

//獲取sheet中數據的行數

int rows = sheet.getPhysicalNumberOfRows();

//獲取表頭單元格個數

int cells = sheet.getRow(0).getPhysicalNumberOfCells();

if(cells > 8) {

cells = 8;

}

for (int i = 1; i < rows; i++) {//第一行為標題欄，從第二行開始取數據

//利用反射，給JavaBean的屬性進行賦值

ExcelTaskRow vo = new ExcelTaskRow();

Field[] fields = vo.getClass().getDeclaredFields();

Row row = sheet.getRow(i);

int index = 0;

while (index < cells) {

Cell cell = row.getCell(index);

總結

以上是生活随笔為你收集整理的excel 树结构json_写一个上传excel表格，解析成 json 的接口的全部內容，希望文章能夠幫你解決所遇到的問題。

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