使用postman，将excel中的车辆及电池信息，按照PDF附件中，第6大项拼装电池静态信息，发送给PDF附件中的地址_postman调用返回pdf

思路：

解析excel，读取vin，利用demo json用在线工具生成实体类，组装成一个集合，序列化输出到txt文件中。

程序：

package com.mtons.mblog.reach;




import com.alibaba.fastjson.JSON;
import com.mtons.mblog.BootApplication;
import com.mtons.mblog.base.utils.BeanParseException;
import com.mtons.mblog.base.utils.ExcelUtil;
import lombok.extern.slf4j.Slf4j;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.io.File;
import java.io.IOException;
import java.io.PrintStream;
import java.util.ArrayList;
import java.util.List;

@RunWith(SpringRunner.class)
@SpringBootTest(classes = BootApplication.class)
@Slf4j
public class TestCalc {

    /**
     * 可以用来读取数据
     * @throws IOException
     * @throws
     */
    @Test
    public void testAtMethod() throws IOException, BeanParseException {
        try {
            Root root = new Root();
            List<BatteryDataDTOList> batteryDataDTOSet = new ArrayList<>();
            //BatteryDataDTOList batteryDataDTOList = new BatteryDataDTOList();
            //把读到的数据写到这个文件中
            //E:\xxx 没有这个文件夹会报错
            PrintStream out = new PrintStream("D:\\reach\\reach.txt");
            //一下代码所有的system.out.println() 输出到xxx.txt文件中
            System.setOut(out);
            //文件夹路径      excel文件
            String[][] strings = ExcelUtil.readFromFile(new File("D:\\yyyy", "vin_import.xlsx"), 9, 2000);
            //r是行数
            for (int r = 1; r < strings.length; r++) {
                //这里0 1 2 列数
                //vin
                String vin = strings[r][0];
                //电池包编码
                String batteryPackageCode = strings[r][1];
                //电池模块编码
                String batteryModuleCode = strings[r][2];
                //电池单体编码 电蕊编码
                String batteryCellCode = strings[r][3];
                BatteryDataDTOList batteryDataDTOList = new BatteryDataDTOList();
                batteryDataDTOList.setVin(vin);
                batteryDataDTOList.setBatteryPackageCode(batteryPackageCode);
                batteryDataDTOList.setBatteryModuleCode(batteryModuleCode);
                batteryDataDTOList.setBatteryCellCode(batteryCellCode);
                batteryDataDTOList.setBatteryType("4");
                batteryDataDTOList.setBatteryCodeType("1");
                batteryDataDTOList.setBatteryPackageCompany("江苏时代新能源科技有限公司");
                batteryDataDTOList.setBatteryPackageVoltage("346");
                batteryDataDTOList.setBatteryPackageCapacity("177");
                if(vin.equals("LHGJ11882M8000015")){
                    batteryDataDTOList.setBatteryPackageDate("2020-04-23");
                }else if(vin.equals("LHGJ11886M8000020")){
                    batteryDataDTOList.setBatteryPackageDate("2020-05-09");
                }else if(vin.equals("LHGJ1188XM8000019")){
                    batteryDataDTOList.setBatteryPackageDate("2020-04-22");
                }else if(vin.equals("LHGJ11880M8000028")){
                    batteryDataDTOList.setBatteryPackageDate("2020-06-07");
                }else if(vin.equals("LHGJ11882M8000029")){
                    batteryDataDTOList.setBatteryPackageDate("2020-06-07");
                }

                batteryDataDTOList.setBatteryModuleVoltage("14.44");
                batteryDataDTOList.setBatteryModuleCapacity("177");
                batteryDataDTOList.setBatteryCellCompany("江苏时代新能源科技有限公司");
                batteryDataDTOList.setBatteryCellVoltage("3.61");
                batteryDataDTOList.setBatteryCellCapacity("177");
                batteryDataDTOSet.add(batteryDataDTOList);
            }
            root.setBatteryDataDTOList(batteryDataDTOSet);
            System.out.println(JSON.toJSONString(root));
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String[] args) throws IOException, BeanParseException {
        new TestCalc().testAtMethod();
    }
}

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输出(部分数据)：

{
	"batteryDataDTOList": [{
		"batteryCellCapacity": "177",
		"batteryCellCode": "001CE280000002A4W0702153",
		"batteryCellCompany": "江苏时代新能源科技有限公司",
		"batteryCellVoltage": "3.61",
		"batteryCodeType": "1",
		"batteryModuleCapacity": "177",
		"batteryModuleCode": "001MEAHA000002A660000028",
		"batteryModuleVoltage": "14.44",
		"batteryPackageCapacity": "177",
		"batteryPackageCode": "001PEAEF000002A670300002",
		"batteryPackageCompany": "江苏时代新能源科技有限公司",
		"batteryPackageDate": "2020-06-07",
		"batteryPackageVoltage": "346",
		"batteryType": "4",
		"vin": "LHGJ11880M8000028"
	}, {
		"batteryCellCapacity": "177",
		"batteryCellCode": "001CE280000002A4W0702058",
		"batteryCellCompany": "江苏时代新能源科技有限公司",
		"batteryCellVoltage": "3.61",
		"batteryCodeType": "1",
		"batteryModuleCapacity": "177",
		"batteryModuleCode": "001MEAHA000002A660000028",
		"batteryModuleVoltage": "14.44",
		"batteryPackageCapacity": "177",
		"batteryPackageCode": "001PEAEF000002A670300002",
		"batteryPackageCompany": "江苏时代新能源科技有限公司",
		"batteryPackageDate": "2020-06-07",
		"batteryPackageVoltage": "346",
		"batteryType": "4",
		"vin": "LHGJ11880M8000028"
	}]
}
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返回：

{
    "code": "0",
    "message": "OK",
    "data": "",
    "recordsFiltered": 0,
    "recordsTotal": 0
}
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参考博客：

https://blog.csdn.net/yunfengfengfeng/article/details/106207159