java 读取excel文件转换成json格式的实例代码

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:

2. package com.siemens.util;
3. import java.util.ArrayList;
4. import java.util.List;
5. import org.json.JSONException;
6. import org.json.JSONObject;
7. import org.apache.poi.ss.usermodel.Row;
8. import org.apache.poi.ss.usermodel.Sheet;
9. import org.apache.poi.ss.usermodel.Workbook;
10. //import com.siemens.entity.master;
11. //import com.siemens.service.masterService;
12. //import com.siemens.serviceImpl.masterServiceImpl;
13. //import com.siemens.serviceImpl.webServiceImpl;
14. public class importFile {
15. public static void main(String[] args) throws JSONException{
16. // master masters = new master();
17. // ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml");
18. // masterService ms = (masterService)ac.getBean("masterservice");
19. Workbook wb =null;
20. Sheet sheet = null;
21. Row row = null;
22. String cellData = null;
23. //文件路径，
24. String filePath = "f:/haoxy/Worktable222.xls";
25. wb =EXCELBean.readExcel(filePath);
26. if(wb != null){
27. //用来存放表中数据
28. List<JSONObject> listMap = new ArrayList<JSONObject>();
29. //获取第一个sheet
30. sheet = wb.getSheetAt(0);
31. //获取最大行数
32. int rownum = sheet.getPhysicalNumberOfRows();
33. //获取第一行
34. row = sheet.getRow(0);
35. //获取最大列数
36. int colnum = row.getPhysicalNumberOfCells();
37. //这里创建json对象，实测用map的话，json数据会有问题
38. JSONObject jsonMap = new JSONObject();
39. //循环行
40. for (int i = 1; i < rownum; i++) {
41. row = sheet.getRow(i);
42. if(row !=null){
43. //创建list对象接收读出的excel数据
44. List<String> list = new ArrayList<String>();
45. //循环列

46. www.ljhseo.com
    www.xyrjkf.net
    www.xyrjkf.cn
    www.xyrjkf.com.cn
    www.zjdygsi.cn
    www.zjdaiyun.cn
    www.jsdygsi.cn
    www.xyrjkf.top
    www.xyrjkf.com
    www.daiyunzj.cn
    ljhseo.com
    xyrjkf.net
    xyrjkf.cn
    xyrjkf.com.cn
    zjdygsi.cn
    zjdaiyun.cn
    jsdygsi.cn
    xyrjkf.top
    xyrjkf.com
    daiyunzj.cn

47. for (int j=0;j<colnum;j++){
48. cellData = (String) EXCELBean.getCellFormatValue(row.getCell(j));
49. list.add(cellData);
50. }
51. //System.out.println(list.get(59));
52. //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。
53. JSONObject jsonObject2 = new JSONObject();
54. jsonObject2.put("skvDorCode",list.get(0));
55. jsonObject2.put("description", list.get(1));
56. jsonObject2.put("discipline", list.get(2));
57. jsonObject2.put("prefabricatedSkids", list.get(3));
58. jsonObject2.put("onRack", list.get(4));
59. jsonObject2.put("offRack", list.get(5));
60. jsonObject2.put("yard", list.get(6));
61. jsonObject2.put("hsrg", list.get(7));
62. JSONObject jsonPptData = new JSONObject();
63. jsonPptData.put("SC FF",list.get(8));
64. jsonPptData.put("CC SS CT",list.get(9));
65. jsonPptData.put("CC SS OCC",list.get(10));
66. jsonPptData.put("CC SS ACC",list.get(11));
67. jsonPptData.put("CC MS CT",list.get(12));
68. jsonPptData.put("CC MS OCC",list.get(13));
69. jsonPptData.put("CC MS ACC",list.get(14));
70. //turnkey
71. http://www.ljhseo.com
    http://www.xyrjkf.net
    http://www.xyrjkf.cn
    http://www.xyrjkf.com.cn
    http://www.zjdygsi.cn
    http://www.zjdaiyun.cn
    http://www.jsdygsi.cn
    http://www.xyrjkf.top
    http://www.xyrjkf.com
    http://www.daiyunzj.cn
    http://ljhseo.com
    http://xyrjkf.net
    http://xyrjkf.cn
    http://xyrjkf.com.cn
    http://zjdygsi.cn
    http://zjdaiyun.cn
    http://jsdygsi.cn
    http://xyrjkf.top
    http://xyrjkf.com
    http://daiyunzj.cn
72. JSONObject jsonTurnkey = new JSONObject();
73. jsonTurnkey.put("plantDesign", list.get(26));
74. jsonTurnkey.put("basicDesign", list.get(27));
75. jsonTurnkey.put("detailDesign", list.get(28));
76. jsonTurnkey.put("supplier", list.get(29));
77. jsonTurnkey.put("errection", list.get(30));
78. jsonTurnkey.put("commissioning", list.get(31));
79. jsonTurnkey.put("blackBox", list.get(32));
80. jsonTurnkey.put("optionalScope", list.get(33));
81. jsonTurnkey.put("remark", list.get(34));
82. jsonTurnkey.put("internalRemark", list.get(35));
83. jsonTurnkey.put("revision", list.get(36));
84. //PowerCore
85. JSONObject jsonPowerCore = new JSONObject();
86. jsonPowerCore.put("plantDesign", list.get(37));
87. jsonPowerCore.put("basicDesign", list.get(38));
88. jsonPowerCore.put("detailDesign", list.get(39));
89. jsonPowerCore.put("supplier", list.get(40));
90. jsonPowerCore.put("errection", list.get(41));
91. jsonPowerCore.put("commissioning", list.get(42));
92. jsonPowerCore.put("blackBox", list.get(43));
93. jsonPowerCore.put("optionalScope", list.get(44));
94. jsonPowerCore.put("remark", list.get(45));
95. jsonPowerCore.put("internalRemark", list.get(46));
96. jsonPowerCore.put("revision", list.get(47));
97. //PowerIsland
98. JSONObject jsonPowerIsland = new JSONObject();
99. jsonPowerIsland.put("plantDesign", list.get(48));
100. jsonPowerIsland.put("basicDesign", list.get(49));
101. jsonPowerIsland.put("detailDesign", list.get(50));
102. jsonPowerIsland.put("supplier", list.get(51));
103. jsonPowerIsland.put("errection", list.get(52));
104. jsonPowerIsland.put("commissioning", list.get(53));
105. jsonPowerIsland.put("blackBox", list.get(54));
106. jsonPowerIsland.put("optionalScope", list.get(55));
107. jsonPowerIsland.put("remark", list.get(56));
108. jsonPowerIsland.put("internalRemark", list.get(57));
109. jsonPowerIsland.put("revision", list.get(58));
110. //创建jsonBmt对象，进一步把以上对象嵌套
111. JSONObject jsonBmt = new JSONObject();
112. jsonBmt.put("Turnkey", jsonTurnkey);
113. jsonBmt.put("PowerCore", jsonPowerCore);
114. jsonBmt.put("PowerIsland", jsonPowerIsland);
115. //把以上几个嵌套入第一层对象中
116. jsonObject2.put("powerPlantTypes",jsonPptData);
117. jsonObject2.put("businessMixTypes",jsonBmt);
118. jsonObject2.put("treeDepth",Integer.parseInt(list.get(59).substring(0,list.get(59).indexOf('.'))));
119. if(Integer.parseInt(list.get(59).substring(0,list.get(59).indexOf('.')))<=2){
120. List<String> list3 = new ArrayList<String>();
121. list3.add("non-empty-placeholder");
122. jsonObject2.put("children",list3);
123. }
124. listMap.add(jsonObject2);
125. }else{
126. break;
127. }
128. }// end for row
129. //最外层加个key-gridData
130. jsonMap.put("gridData", listMap);
131. System.out.println(jsonMap);
132. }
133. }
134. }

复制代码

读取excel 工具类，看到网友的读取方法引用一下：

EXCELBean.java:

2. package com.siemens.util;
3. import java.io.FileInputStream;
4. import java.io.FileNotFoundException;
5. import java.io.IOException;
6. import java.io.InputStream;
7. import org.apache.poi.hssf.usermodel.HSSFWorkbook;
8. import org.apache.poi.ss.usermodel.Cell;
9. import org.apache.poi.ss.usermodel.DateUtil;
10. import org.apache.poi.ss.usermodel.Workbook;
11. import org.apache.poi.xssf.usermodel.XSSFWorkbook;
12. public class EXCELBean {
13. //读取excel
14. public static Workbook readExcel(String filePath){
15. Workbook wb = null;
16. if(filePath==null){
17. return null;
18. }
19. String extString = filePath.substring(filePath.lastIndexOf("."));
20. InputStream is = null;
21. try {
22. is = new FileInputStream(filePath);
23. if(".xls".equals(extString)){
24. return wb = new HSSFWorkbook(is);
25. }else if(".xlsx".equals(extString)){
26. return wb = new XSSFWorkbook(is);
27. }else{
28. return wb = null;
29. }
30. } catch (FileNotFoundException e) {
31. e.printStackTrace();
32. } catch (IOException e) {
33. e.printStackTrace();
34. }
35. return wb;
36. }
37. public static Object getCellFormatValue(Cell cell){
38. Object cellValue = null;
39. if(cell!=null){
40. //判断cell类型
41. switch(cell.getCellType()){
42. case Cell.CELL_TYPE_NUMERIC:{
43. cellValue = String.valueOf(cell.getNumericCellValue());
44. break;
45. }
46. case Cell.CELL_TYPE_FORMULA:{
47. //判断cell是否为日期格式
48. if(DateUtil.isCellDateFormatted(cell)){
49. //转换为日期格式YYYY-mm-dd
50. cellValue = cell.getDateCellValue();
51. }else{
52. //数字
53. cellValue = String.valueOf(cell.getNumericCellValue());
54. }
55. break;
56. }
57. case Cell.CELL_TYPE_STRING:{
58. cellValue = cell.getRichStringCellValue().getString();
59. break;
60. }
61. default:
62. cellValue = "";
63. }
64. }else{
65. cellValue = "";
66. }
67. return cellValue;
68. }
69. }