Mac postman调分页接口，导出csv

准备后端接口

package com.ybchen.controller;

import com.ybchen.utils.JsonData;
import lombok.Data;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

/**
 * @description: csv导出后端接口测试
 * @author: Alex
 * @create: 2023-11-16 22:41
 */
@RestController
@RequestMapping("/api/v1/csv")
public class CavController {
    /**
     * 分页接口
     *
     * @param page 页数
     * @param size 一页多少条
     * @return
     */
    @GetMapping("list")
    public JsonData<List<UserInfo>> list(
            @RequestParam(value = "page", defaultValue = "1") int page,
            @RequestParam(value = "size", defaultValue = "10") int size
    ) {
        List<UserInfo> resultList = new ArrayList<>(size);
        for (int i = 0; i < size; i++) {
            resultList.add(new UserInfo(
                    i,
                    "陈彦斌___"+page+"_"+i,
                    page+size+"@qq.com",
                    new Date()
            ));
        }
        return JsonData.buildSuccess(resultList);
    }

    @Data
    public class UserInfo {
        /**
         * 主键id
         */
        private int id;

        /**
         * 用户名
         */
        private String userName;

        /**
         * 邮箱
         */
        private String email;

        /**
         * 创建时间
         */
        private Date createTime;

        public UserInfo(int id, String userName, String email, Date createTime) {
            this.id = id;
            this.userName = userName;
            this.email = email;
            this.createTime = createTime;
        }

    }
}

接口数据

{
    "code": 0,
    "data": [
        {
            "id": 0,
            "userName": "陈彦斌___1_0",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 1,
            "userName": "陈彦斌___1_1",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 2,
            "userName": "陈彦斌___1_2",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 3,
            "userName": "陈彦斌___1_3",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 4,
            "userName": "陈彦斌___1_4",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 5,
            "userName": "陈彦斌___1_5",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 6,
            "userName": "陈彦斌___1_6",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 7,
            "userName": "陈彦斌___1_7",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 8,
            "userName": "陈彦斌___1_8",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        },
        {
            "id": 9,
            "userName": "陈彦斌___1_9",
            "email": "11@qq.com",
            "createTime": "2023-11-16T14:58:48.343+00:00"
        }
    ],
    "msg": ""
}

准备后端node环境

下载地址：https://nodejs.cn/download/

切换npm镜像源为淘宝npm镜像

sodu npm install -g cnpm --registry=https://registry.npm.taobao.org

下载node服务

源代码

{
  "name": "node-server",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",
  "dependencies": {
    "body-parser": "^1.18.3",
    "express": "^4.16.3",
    "shelljs": "^0.8.2"
  }
}

package.json

const express = require('express'),
  app = express(),
  fs = require('fs'),
  shell = require('shelljs'),

   // Modify the folder path in which responses need to be stored
  folderPath = './Responses/',
  defaultFileExtension = 'json', // Change the default file extension
  bodyParser = require('body-parser'),
  DEFAULT_MODE = 'writeFile',
  path = require('path');

// Create the folder path in case it doesn't exist
shell.mkdir('-p', folderPath);

 // Change the limits according to your response size
app.use(bodyParser.json({limit: '50mb', extended: true}));
app.use(bodyParser.urlencoded({ limit: '50mb', extended: true })); 

app.get('/', (req, res) => res.send('Hello, I write data to file. Send them requests!'));

app.post('/write', (req, res) => {
  let extension = req.body.fileExtension || defaultFileExtension,
    fsMode = req.body.mode || DEFAULT_MODE,
    uniqueIdentifier = req.body.uniqueIdentifier ? typeof req.body.uniqueIdentifier === 'boolean' ? Date.now() : req.body.uniqueIdentifier : false,
    currentDate = new Date(),
    formattedDate = currentDate.toISOString().split('T')[0], // 获取年月日部分
    //文件名
    filename = formattedDate,
    filePath = `${path.join(folderPath, filename)}.${extension}`,
    options = req.body.options || undefined;

  fs[fsMode](filePath, req.body.responseData, options, (err) => {
    if (err) {
      console.log(err);
      res.send('Error');
    }
    else {
      res.send('Success');
    }
  });
});

app.listen(3000, () => {
  console.log('ResponsesToFile App is listening now! Send them requests my way!');
  console.log(`Data is being stored at location: ${path.join(process.cwd(), folderPath)}`);
});

script.js

仓库地址：https://gitee.com/yenbin_chen/response-to-file-postman

启动node服务

1. 下载依赖：npm install
2. 启动node服务：node script.js

修改postman脚本

Pre-request Script

// 请求接口前，先保存csv的列名如 responseData，逗号分个， \n用于csv文件内容换行的，csv每行内容在postman的Test里面追加
let opts = {
    requestName: request.name  || request.url,
    fileExtension: 'csv',
    mode: 'appendFile',
    uniqueIdentifier: false,
    responseData: "id,userName,email,createTime\n"
};
pm.sendRequest({
    url: 'http://localhost:3000/write',
    method: 'POST',
    header: 'Content-Type:application/json',
    body: {
        mode: 'raw',
        raw: JSON.stringify(opts)
    }
}, function (err, res) {
    console.log(res);
});

Test

//备注说明：这里是接口请求之后的处理逻辑，pm.response.json()就是接口返回的json数据：
// { "code": 0,"data": [{"id": 0,"userName": "陈彦斌___1_0","email": "11@qq.com","createTime": "2023-11-16T14:58:48.343+00:00"},{"id": 1,"userName": "陈彦斌___1_1","email": "11@qq.com","createTime": "2023-11-16T14:58:48.343+00:00"}],"msg": ""}
var jsonData = pm.response.json();
console.log(jsonData);
var data = jsonData.data;//拿到这个数据data里的数据，循环调node接口
for(var i=0;i<data.length;i++){
    var dataStr = data[i].id + "," + data[i].userName + "," + data[i].email + "," +data[i].createTime + "\n";
    let opts = {
        requestName: request.name  || request.url,
        fileExtension: 'csv',
        mode: 'appendFile',//这个模式表示往csv里面追加写，单次执行追加写list数据没问题
        uniqueIdentifier: false,
        responseData: dataStr
    };
    
    pm.sendRequest({
        url: 'http://localhost:3000/write',
        method: 'POST',
        header: 'Content-Type:application/json',
        body: {
            mode: 'raw',
            raw: JSON.stringify(opts)
        }
    }, function (err, res) {
        console.log(res);
    });
}

演示

循环调postman接口，动态传开始页

我这里开始页，使用占位符：{{page_num}}，准备参数，如下

page_num
1
2
3
4
5

注意：因为要循环轮询调后端接口生成csv文件，需要将postman的生成csv的列名去掉，也就是把Pre-request Script逻辑去除，要不然会重复生成列名，等文件生成完后，在手动补充列名即可~~

功能演示