Java读取json并写入Excel

这是第一个的文章，希望之后越走越远！

功能：

1. 数据是个长json串，json中有许多需要提取的字段信息存入Excel中
2. 需要提取的字段与数据：fname，title，auth，date，copyright

• 注：D:/jsonToExcel.txt文件中保存的是json格式的数据，解析后使用poi写入到excel文件中
  Java代码

import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.OutputStream;

import org.apache.poi.xssf.usermodel.XSSFCell;
import org.apache.poi.xssf.usermodel.XSSFRow;
import org.apache.poi.xssf.usermodel.XSSFSheet;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.json.JSONArray;
import org.json.JSONObject;


public class Spider {

    public static void main(String[] args) {
        spider();
    }

    public static void spider() {
        StringBuilder sb = new StringBuilder();
        try {
            FileReader in = new FileReader(new File("D:/jsonToExcel.txt"));
            BufferedReader inBR = new BufferedReader(in);
            String stext = null;
            //读取每一行内容
            while ((stext = inBR.readLine()) != null) {
                sb.append(stext);
            }
            inBR.close();
        } catch (Exception e) {
            e.printStackTrace();
        }

        try {
            //创建文件
            String uploadFile = "D:/jsonToExcel.xlsx";
            OutputStream fos = new FileOutputStream(uploadFile);
            XSSFWorkbook workBook = new XSSFWorkbook();
            XSSFSheet sheet = workBook.createSheet();

            XSSFRow row = null;
            XSSFCell cell = null;

            row = sheet.createRow(0);
            String[] names = {"序号", "fname", "title", "copyright", "date", "auth"};
            for (int index = 0; index < 6; index++) {
                cell = row.createCell(index);
                cell.setCellValue(names[index]);
            }
            int count = 1;
            JSONArray jsonArray = new JSONArray(sb.toString());
            for (Object object : jsonArray) {
                JSONObject item = (JSONObject) object;
                String fname = item.getString("fname");
                String title = item.getString("title");
                String copyright = item.getString("copyright");
                String date = item.getJSONObject("ss").getString("date");
                JSONArray auths = item.getJSONArray("auth");
                String au = "";
                for (Object object2: auths) {
                    JSONObject item2 = (JSONObject) object2;
                    String hel = item2.getString("hel");
                    String fst = item2.getString("fst");
                    String lst = item2.getString("lst");
                    au += hel + " " + fst+ " " + lst + ",";
                }

                row = sheet.createRow(count);
                cell = row.createCell(0);
                cell.setCellValue(count);
                cell = row.createCell(1);
                cell.setCellValue(fname);
                cell = row.createCell(2);
                cell.setCellValue(title);
                cell = row.createCell(3);
                cell.setCellValue(copyright);
                cell = row.createCell(4);
                cell.setCellValue(date);
                cell = row.createCell(5);
                cell.setCellValue(au);
                count++;
            }
            //写入Excel中
            workBook.write(fos);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

}

json串(也就是jsonToExcel.txt)

[
  {
    "ss": {
      "name": "1.",
      "snm": "1",
      "date": "2021-01-01"
    },
    "title": "title1",
    "fname": "name1",
    "auth": [
      {
        "hel": "Mrs.",
        "fst": "El",
        "lst": "Feinger"
      },
      {
        "hel": "Prf.",
        "fst": "Nalia",
        "lst": "Kulesva"
      },
      {
        "hel": "Dr.",
        "fst": "All",
        "lst": "Vinok"
      }
    ],
    "copyright": "Copyright 2021 All rights reserved.",
    "cb": false
  },
  {
    "ss": {
      "name": "1.",
      "snm": "1",
      "date": "2021-01-01"
    },
    "title": "title2",
    "fname": "name2",
    "auth": [
      {
        "hel": "Mr.",
        "fst": "go",
        "lst": "Miso"
      },
      {
        "hel": "Dr.",
        "fst": "Rap",
        "lst": "Ro"
      }
    ],
    "copyright": "Copyright 2021.",
    "cb": false
  },
  {
    "ss": {
      "name": "1.",
      "snm": "1",
      "date": "2021-01-01"
    },
    "title": "title3",
    "fname": "name3",
    "auth": [
      {
        "hel": "Dr.",
        "fst": "Vad",
        "lst": "Ghin"
      },
      {
        "hel": "Ms.",
        "fst": "Slna",
        "lst": "Leba"
      },
      {
        "hel": "Dr.",
        "fst": "Alina",
        "lst": "Cha"
      }
    ],
    "copyright": "Copyright 2021 All rights reserved.",
    "cb": false
  },
  {
    "ss": {
      "name": "1.",
      "snm": "1",
      "date": "2021-01-01"
    },
    "title": "title4",
    "fname": "name4",
    "auth": [
      {
        "hel": "Ms.",
        "fst": "Yu",
        "lst": "Lei"
      },
      {
        "hel": "Prf.",
        "fst": "Ming",
        "lst": "Li"
      }
    ],
    "copyright": "Copyright 2021.",
    "cb": false
  },
  {
    "ss": {
      "name": "1.",
      "snm": "1",
      "date": "2021-01-01"
    },
    "title": "title5",
    "fname": "name5",
    "auth": [
      {
        "hel": "Mr.",
        "fst": "Kyke",
        "lst": "Tan"
      },
      {
        "hel": "Prof.",
        "fst": "Nos",
        "lst": "Contor"
      }
    ],
    "copyright": "Copyright notice: For more information - please contact the main auththor.",
    "cb": false
  }
]

pom.xml文件

    4.0.0

    org.json
    JsonToExcel
    1.0-SNAPSHOT
    
        
            org.apache.poi
            poi-ooxml
            4.1.0
        
        
            org.json
            json
            20160807
        
    

参考于：https://blog.csdn.net/bowei026/article/details/105001875

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