java 读取excel文件转换成json格式的实例代码
作者：biubiukey
这篇文章主要介绍了 java 读取excel文件转换成json格式的实例代码,需要的朋友可以参考下
需要读取excel数据转换成json数据，写了个测试功能，转换正常：
JSON转换：org.json.jar
测试类： importFile.java:
package com.siemens.util;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONException;
import org.json.JSONObject;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
//import com.siemens.entity.master;
//import com.siemens.service.masterService;
//import com.siemens.serviceImpl.masterServiceImpl;
//import com.siemens.serviceImpl.webServiceImpl;
public class importFile {
public static void main(String[] args) throws JSONException{
// master masters = new master();
// ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
// masterService ms = (masterService)ac.getBean("masterservice");
Workbook wb =null;
Sheet sheet = null;
Row row = null;
String cellData = null;
//文件路径，
String filePath = "f:/haoxy/Worktable222.xls";
wb =EXCELBean.readExcel(filePath);
if(wb != null){
//用来存放表中数据
List<JSONObject> listMap = new ArrayList<JSONObject>();
//获取第一个sheet
sheet = wb.getSheetAt(0);
//获取最大行数
int rownum = sheet.getPhysicalNumberOfRows();
//获取第一行
row = sheet.getRow(0);
//获取最大列数
int colnum = row.getPhysicalNumberOfCells();
//这里创建json对象，实测用map的话，json数据会有问题
JSONObject jsonMap = new JSONObject();
//循环行
for (int i = 1; i < rownum; i++) {
row = sheet.getRow(i);
if(row !=null){
//创建list对象接收读出的excel数据
List<String> list = new ArrayList<String>();
//循环列
for (int j=0;j<colnum;j++){
cellData = (String) EXCELBean.getCellFormatValue(row.getCell(j));
list.add(cellData);
}
//System.out.println(list.get(59));
//下面具体是本人对数据按需求进行格式处理 ---创建json对象会报异常，捕捉一下。
JSONObject jsonObject2 = new JSONObject();
jsonObject2.put("skvDorCode",list.get(0));
jsonObject2.put("description", list.get(1));
jsonObject2.put("discipline", list.get(2));
jsonObject2.put("prefabricatedSkids", list.get(3));
jsonObject2.put("onRack", list.get(4));
jsonObject2.put("offRack", list.get(5));
jsonObject2.put("yard", list.get(6));
jsonObject2.put("hsrg", list.get(7));
JSONObject jsonPptData = new JSONObject();
jsonPptData.put("SC FF",list.get(8));
jsonPptData.put("CC SS CT",list.get(9));
jsonPptData.put("CC SS OCC",list.get(10));
jsonPptData.put("CC SS ACC",list.get(11));
jsonPptData.put("CC MS CT",list.get(12));
jsonPptData.put("CC MS OCC",list.get(13));
jsonPptData.put("CC MS ACC",list.get(14));
//turnkey
JSONObject jsonTurnkey = new JSONObject();
jsonTurnkey.put("plantDesign", list.get(26));
jsonTurnkey.put("basicDesign", list.get(27));
jsonTurnkey.put("detailDesign", list.get(28));
jsonTurnkey.put("supplier", list.get(29));
jsonTurnkey.put("errection", list.get(30));
jsonTurnkey.put("commissioning", list.get(31));
jsonTurnkey.put("blackBox", list.get(32));
jsonTurnkey.put("optionalScope", list.get(33));
jsonTurnkey.put("remark", list.get(34));
jsonTurnkey.put("internalRemark", list.get(35));
jsonTurnkey.put("revision", list.get(36));
//PowerCore
JSONObject jsonPowerCore = new JSONObject();
jsonPowerCore.put("plantDesign", list.get(37));
jsonPowerCore.put("basicDesign", list.get(38));
jsonPowerCore.put("detailDesign", list.get(39));
jsonPowerCore.put("supplier", list.get(40));
jsonPowerCore.put("errection", list.get(41));
jsonPowerCore.put("commissioning", list.get(42));
jsonPowerCore.put("blackBox", list.get(43));
jsonPowerCore.put("optionalScope", list.get(44));
jsonPowerCore.put("remark", list.get(45));
jsonPowerCore.put("internalRemark", list.get(46));
jsonPowerCore.put("revision", list.get(47));
//PowerIsland
JSONObject jsonPowerIsland = new JSONObject();
jsonPowerIsland.put("plantDesign", list.get(48));
jsonPowerIsland.put("basicDesign", list.get(49));
jsonPowerIsland.put("detailDesign", list.get(50));
jsonPowerIsland.put("supplier", list.get(51));
jsonPowerIsland.put("errection", list.get(52));
jsonPowerIsland.put("commissioning", list.get(53));
jsonPowerIsland.put("blackBox", list.get(54));
jsonPowerIsland.put("optionalScope", list.get(55));
jsonPowerIsland.put("remark", list.get(56));
jsonPowerIsland.put("internalRemark", list.get(57));
jsonPowerIsland.put("revision", list.get(58));
//创建jsonBmt对象，进一步把以上对象嵌套
JSONObject jsonBmt = new JSONObject();
jsonBmt.put("Turnkey", jsonTurnkey);
jsonBmt.put("PowerCore", jsonPowerCore);
jsonBmt.put("PowerIsland", jsonPowerIsland);
//把以上几个嵌套入第一层对象中
jsonObject2.put("powerPlantTypes",jsonPptData);
jsonObject2.put("businessMixTypes",jsonBmt);
jsonObject2.put("treeDepth",Integer.parseInt(list.get(59).substring(0,list.get(59).indexOf('.'))));
if(Integer.parseInt(list.get(59).substring(0,list.get(59).indexOf('.')))<=2){
List<String> list3 = new ArrayList<String>();
list3.add("non-empty-placeholder");
jsonObject2.put("children",list3);
}
listMap.add(jsonObject2);
}else{
break;
}
}// end for row
//最外层加个key-gridData
jsonMap.put("gridData", listMap);
System.out.println(jsonMap);
}
}
}
读取excel 工具类，看到网友的读取方法引用一下：
EXCELBean.java:
package com.siemens.util;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Cell;
import org.apache.poi.ss.usermodel.DateUtil;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
public class EXCELBean {
//读取excel
public static Workbook readExcel(String filePath){
Workbook wb = null;
if(filePath==null){
return null;
}
String extString = filePath.substring(filePath.lastIndexOf("."));
InputStream is = null;
try {
is = new FileInputStream(filePath);
if(".xls".equals(extString)){
return wb = new HSSFWorkbook(is);
}else if(".xlsx".equals(extString)){
return wb = new XSSFWorkbook(is);
}else{
return wb = null;
}
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
return wb;
}
public static Object getCellFormatValue(Cell cell){
Object cellValue = null;
if(cell!=null){
//判断cell类型
switch(cell.getCellType()){
case Cell.CELL_TYPE_NUMERIC:{
cellValue = String.valueOf(cell.getNumericCellValue());
break;
}
case Cell.CELL_TYPE_FORMULA:{
//判断cell是否为日期格式
if(DateUtil.isCellDateFormatted(cell)){
//转换为日期格式YYYY-mm-dd
cellValue = cell.getDateCellValue();
}else{
//数字
cellValue = String.valueOf(cell.getNumericCellValue());
}
break;
}
case Cell.CELL_TYPE_STRING:{
cellValue = cell.getRichStringCellValue().getString();
break;
}
default:
cellValue = "";
}
}else{
cellValue = "";
}
return cellValue;
}
}
总结
以上所述是小编给大家介绍的java 读取excel文件转换成json格式 ，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对脚本之家网站的支持！