Excel Reader¶
excelreader
插件实现了从 Microsoft Excel 文件读取数据的能力。
配置¶
获取样例文件¶
从这里下载用于演示的Excel压缩文件,并解压缩放置到 /tmp/in
目录下。
三个文件夹的内容相同,其中
demo.xlsx
是 Excel 新格式demo.xls
是 Excel 老格式demo_gbk.xlsx
是在Windows下创建,已GBK编码存储的文件
文件内容,如下图所示:
表头大致说明了单元数据的特征
创建 job 文件¶
创建如下 json 文件
{
"job": {
"setting": {
"speed": {
"channel": 2,
"bytes": -1
}
},
"content": {
"reader": {
"name": "excelreader",
"parameter": {
"path": [
"/tmp/in"
],
"header": true,
"skipRows": 0
}
},
"writer": {
"parameter": {
"print": true
},
"name": "streamwriter"
}
}
}
}
将输出内容存保为到 job/excel2stream.json
文件中,执行采集命令:
$ bin/addax.sh job/excel2stream.json
如果没有报错,应该得到如下输出:
点击展开
___ _ _
/ _ \ | | | |
/ /_\ \ __| | __| | __ ___ __
| _ |/ _` |/ _` |/ _` \ \/ /
| | | | (_| | (_| | (_| |> <
\_| |_/\__,_|\__,_|\__,_/_/\_\
:: Addax version :: (v4.0.3)
2021-09-09 14:43:42.579 [ main] INFO VMInfo - VMInfo# operatingSystem class => sun.management.OperatingSystemImpl
2021-09-09 14:43:42.621 [ main] INFO Engine -
{
"content":
{
"reader":{
"parameter":{
"path":[
"/tmp/in"
],
"column":[
{
"name":"no",
"type":"long"
},
{
"name":"birth",
"format":"yyyy-MM-dd HH:mm:ss",
"type":"date"
},
{
"name":"kk",
"type":"string"
}
],
"header":true,
"skipHeader":true,
"encoding":"UTF-8",
"fieldDelimiter":","
},
"name":"excelreader"
},
"writer":{
"parameter":{
"print":true
},
"name":"streamwriter"
}
},
"setting":{
"speed":{
"bytes":-1,
"channel":2
}
}
}
2021-09-09 14:43:42.653 [ main] INFO PerfTrace - PerfTrace traceId=job_-1, isEnable=false, priority=0
2021-09-09 14:43:42.653 [ main] INFO JobContainer - Addax jobContainer starts job.
2021-09-09 14:43:42.655 [ main] INFO JobContainer - Set jobId = 0
2021-09-09 14:43:42.669 [ job-0] INFO ExcelReader$Job - add file [/tmp/in/demo_old.xls] as a candidate to be read.
2021-09-09 14:43:42.669 [ job-0] INFO ExcelReader$Job - add file [/tmp/in/demo_gbk.xlsx] as a candidate to be read.
2021-09-09 14:43:42.670 [ job-0] INFO ExcelReader$Job - add file [/tmp/in/demo.xlsx] as a candidate to be read.
2021-09-09 14:43:42.670 [ job-0] INFO ExcelReader$Job - The number of files to read is: [3]
2021-09-09 14:43:42.677 [ job-0] INFO JobContainer - Addax Reader.Job [excelreader] do prepare work .
2021-09-09 14:43:42.678 [ job-0] INFO JobContainer - Addax Writer.Job [streamwriter] do prepare work .
2021-09-09 14:43:42.679 [ job-0] INFO JobContainer - Job set Channel-Number to 2 channels.
2021-09-09 14:43:42.681 [ job-0] INFO JobContainer - Addax Reader.Job [excelreader] splits to [3] tasks.
2021-09-09 14:43:42.682 [ job-0] INFO JobContainer - Addax Writer.Job [streamwriter] splits to [3] tasks.
2021-09-09 14:43:42.727 [ job-0] INFO JobContainer - Scheduler starts [1] taskGroups.
2021-09-09 14:43:42.736 [ taskGroup-0] INFO TaskGroupContainer - taskGroupId=[0] start [2] channels for [3] tasks.
2021-09-09 14:43:42.741 [ taskGroup-0] INFO Channel - Channel set byte_speed_limit to -1, No bps activated.
2021-09-09 14:43:42.742 [ taskGroup-0] INFO Channel - Channel set record_speed_limit to -1, No tps activated.
2021-09-09 14:43:42.755 [0-0-1-reader] INFO ExcelReader$Task - The first row is skipped as a table header
2021-09-09 14:43:42.755 [0-0-1-reader] INFO ExcelReader$Task - begin read file /tmp/in/demo.xlsx
2021-09-09 14:43:42.757 [0-0-0-reader] INFO ExcelReader$Task - The first row is skipped as a table header
2021-09-09 14:43:42.758 [0-0-0-reader] INFO ExcelReader$Task - begin read file /tmp/in/demo_gbk.xlsx
1 11 1102.234 Addax加上中文 2021-09-10 00:00:00 5544.17 1102.234
1 12 1103.234 Addax加上中文 2021-09-11 00:00:00 5552.17 1103.234
1 13 1104.234 Addax加上中文 2021-09-12 00:00:00 5560.17 1104.234
1 14 1105.234 Addax加上中文 2021-09-13 00:00:00 5568.17 1105.234
1 15 1106.234 Addax加上中文 2021-09-14 00:00:00 5576.17 1106.234
1 16 1107.234 Addax加上中文 2021-09-15 00:00:00 5584.17 1107.234
1 17 1108.234 Addax加上中文 2021-09-16 00:00:00 5592.17 1108.234
1 18 1109.234 Addax加上中文 2021-09-17 00:00:00 5600.17 1109.234
1 19 1110.234 Addax加上中文 2021-09-18 00:00:00 5608.17 1110.234
1 20 1111.234 Addax加上中文 2021-09-19 00:00:00 5616.17 1111.234
1 21 1112.234 Addax加上中文 2021-09-20 00:00:00 5624.17 1112.234
1 22 1113.234 Addax加上中文 2021-09-21 00:00:00 5632.17 1113.234
1 23 1114.234 Addax加上中文 2021-09-22 00:00:00 5640.17 1114.234
1 24 1115.234 Addax加上中文 2021-09-23 00:00:00 5648.17 1115.234
1 25 1116.234 Addax加上中文 2021-09-24 00:00:00 5656.17 1116.234
1 26 1117.234 Addax加上中文 2021-09-25 00:00:00 5664.17 1117.234
1 27 1118.234 Addax加上中文 2021-09-26 00:00:00 5672.17 1118.234
1 28 1119.234 Addax加上中文 2021-09-27 00:00:00 5680.17 1119.234
1 29 1120.234 Addax加上中文 2021-09-28 00:00:00 5688.17 1120.234
1 30 1121.234 Addax加上中文 2021-09-29 00:00:00 5696.17 1121.234
1 11 1102.234 Addax加上中文 2021-09-10 00:00:00 5544.17 1102.234
2 12 1103.234 Addax加上中文 2021-09-11 00:00:00 5552.17 1103.234
3 13 1104.234 Addax加上中文 2021-09-12 00:00:00 5560.17 1104.234
4 14 1105.234 Addax加上中文 2021-09-13 00:00:00 5568.17 1105.234
5 15 1106.234 Addax加上中文 2021-09-14 00:00:00 5576.17 1106.234
6 16 1107.234 Addax加上中文 2021-09-15 00:00:00 5584.17 1107.234
7 17 1108.234 Addax加上中文 2021-09-16 00:00:00 5592.17 1108.234
8 18 1109.234 Addax加上中文 2021-09-17 00:00:00 5600.17 1109.234
9 19 1110.234 Addax加上中文 2021-09-18 00:00:00 5608.17 1110.234
10 20 1111.234 Addax加上中文 2021-09-19 00:00:00 5616.17 1111.234
11 21 1112.234 Addax加上中文 2021-09-20 00:00:00 5624.17 1112.234
12 22 1113.234 Addax加上中文 2021-09-21 00:00:00 5632.17 1113.234
13 23 1114.234 Addax加上中文 2021-09-22 00:00:00 5640.17 1114.234
14 24 1115.234 Addax加上中文 2021-09-23 00:00:00 5648.17 1115.234
15 25 1116.234 Addax加上中文 2021-09-24 00:00:00 5656.17 1116.234
16 26 1117.234 Addax加上中文 2021-09-25 00:00:00 5664.17 1117.234
17 27 1118.234 Addax加上中文 2021-09-26 00:00:00 5672.17 1118.234
18 28 1119.234 Addax加上中文 2021-09-27 00:00:00 5680.17 1119.234
19 29 1120.234 Addax加上中文 2021-09-28 00:00:00 5688.17 1120.234
20 30 1121.234 Addax加上中文 2021-09-29 00:00:00 5696.17 1121.234
2021-09-09 14:43:43.894 [0-0-2-reader] INFO ExcelReader$Task - The first row is skipped as a table header
2021-09-09 14:43:43.894 [0-0-2-reader] INFO ExcelReader$Task - begin read file /tmp/in/demo_old.xls
1 11 1102.234 Addax加上中文 2021-09-10 00:00:00 5544.17 1102.234
2 12 1103.234 Addax加上中文 2021-09-11 00:00:00 5552.17 1103.234
3 13 1104.234 Addax加上中文 2021-09-12 00:00:00 5560.17 1104.234
4 14 1105.234 Addax加上中文 2021-09-13 00:00:00 5568.17 1105.234
5 15 1106.234 Addax加上中文 2021-09-14 00:00:00 5576.17 1106.234
6 16 1107.234 Addax加上中文 2021-09-15 00:00:00 5584.17 1107.234
7 17 1108.234 Addax加上中文 2021-09-16 00:00:00 5592.17 1108.234
8 18 1109.234 Addax加上中文 2021-09-17 00:00:00 5600.17 1109.234
9 19 1110.234 Addax加上中文 2021-09-18 00:00:00 5608.17 1110.234
10 20 1111.234 Addax加上中文 2021-09-19 00:00:00 5616.17 1111.234
11 21 1112.234 Addax加上中文 2021-09-20 00:00:00 5624.17 1112.234
12 22 1113.234 Addax加上中文 2021-09-21 00:00:00 5632.17 1113.234
13 23 1114.234 Addax加上中文 2021-09-22 00:00:00 5640.17 1114.234
14 24 1115.234 Addax加上中文 2021-09-23 00:00:00 5648.17 1115.234
15 25 1116.234 Addax加上中文 2021-09-24 00:00:00 5656.17 1116.234
16 26 1117.234 Addax加上中文 2021-09-25 00:00:00 5664.17 1117.234
17 27 1118.234 Addax加上中文 2021-09-26 00:00:00 5672.17 1118.234
18 28 1119.234 Addax加上中文 2021-09-27 00:00:00 5680.17 1119.234
19 29 1120.234 Addax加上中文 2021-09-28 00:00:00 5688.17 1120.234
20 30 1121.234 Addax加上中文 2021-09-29 00:00:00 5696.17 1121.234
2021-09-09 14:43:45.753 [ job-0] INFO AbstractScheduler - Scheduler accomplished all tasks.
2021-09-09 14:43:45.754 [ job-0] INFO JobContainer - Addax Writer.Job [streamwriter] do post work.
2021-09-09 14:43:45.756 [ job-0] INFO JobContainer - Addax Reader.Job [excelreader] do post work.
2021-09-09 14:43:45.761 [ job-0] INFO JobContainer - PerfTrace not enable!
2021-09-09 14:43:45.762 [ job-0] INFO StandAloneJobContainerCommunicator - Total 60 records, 3360 bytes | Speed 1.09KB/s, 20 records/s | Error 0 records, 0 bytes | All Task WaitWriterTime 0.000s | All Task WaitReaderTime 0.993s | Percentage 100.00%
2021-09-09 14:43:45.764 [ job-0] INFO JobContainer -
任务启动时刻 : 2021-09-09 14:43:42
任务结束时刻 : 2021-09-09 14:43:45
任务总计耗时 : 3s
任务平均流量 : 1.09KB/s
记录写入速度 : 20rec/s
读出记录总数 : 60
读写失败总数 : 0
参数说明¶
配置项 | 是否必须 | 类型 | 默认值 | 描述 |
---|---|---|---|---|
path | 是 | string/list | 无 | 指定要读取的文件夹,可以指定多个 |
header | 否 | boolean | false | 文件是否包含头 |
skipRows | 否 | int | 0 | 要跳过前多少行 |
header¶
Excel 文件是否包含头,如果包含,则跳过
skipRows¶
指定要跳过的行数, 默认为0,表示不跳过。这里要注意的是,假定 设置了 header
为 true,同时设置 skipRows
为 2。则表示前三行都跳过。
如果 header
为 false, 则表示跳过前两行。
支持的数据类型¶
Excel 读取功能的实现依赖于 Apache POI 项目,该实现对单元格的数据类型定义很宽泛。 仅定义了布尔型(Boolean),数值型(Double),字符串型(String) 三种。其中数值型包括所有整数,小数和日期。 目前对于数值类型做了简单区分
- 使用库工具类探测是否为日期类型,如果是,则判断为日期类型
- 将数值转换为长整形,并和原值比较,如果大小相等,则判断为长整型(Long)
- 否则判断为浮点型(Double)
限制¶
- 当前仅读取文件的第一个 Sheet 而忽略其他 Sheets
- 暂不支持指定列读取
- 暂不支持跳过尾部行数(比如有总结的尾行可能并不符合要求)
- 暂不判断每一行的列数是否相等,需要 Excel 自行保证
- 仅会读取指定目录下文件后缀为
xlsx
或xls
的文件,其他后缀文件将会忽略并给出告警消息