Groovy拆分CSV [英] Groovy Split CSV

问题描述

我有一个csv文件（details.csv）如

I have a csv file (details.csv) like

ID,NAME,ADDRESS
1,"{foo,bar}","{123,mainst,ny}"
2,"{abc,def}","{124,mainst,Va}"
3,"{pqr,xyz}","{125,mainst,IL}"

关闭上面这是从目录中读取所有csv文件）

when I use (Note: I have other closure above this which reads all csv files from directory)

if(file.getName().equalsIgnoreCase("deatails.csv")) {
 input = new FileInputStream(file)
 reader = new BufferedReader(new InputStreamReader(input))
 reader.eachLine{line-> def cols = line.split(",")
 println cols.size() }

1
"{foo
bar}"
"{123
mainst
ny}"

（，）用逗号（，）分割数据，但我想要我的结果为

spilt(",") is splitting data by comma(,) but I want my results as

1
"{foo,bar}"
"{123,mainst,ny}"

修复这个闭包。请帮忙！感谢

How can I fix this closure. Please help! Thanks

推荐答案

编写csv解析器是一件棘手的事。

Writing a csv parser is a tricky business.

我会让别人做努力的工作，并使用 GroovyCsv

I would let someone else do the hard work, and use something like GroovyCsv

以下是如何使用GroovyCsv解析它

Here is how to parse it with GroovyCsv

// I'm using Grab instead of just adding the jar and its
// dependencies to the classpath
@Grab( 'com.xlson.groovycsv:groovycsv:1.0' )
import com.xlson.groovycsv.CsvParser

def csv = '''ID,NAME,ADDRESS
1,"{foo,bar}","{123,mainst,ny}"
2,"{abc,def}","{124,mainst,Va}"
3,"{pqr,xyz}","{125,mainst,IL}"'''

def csva = CsvParser.parseCsv( csv )
csva.each {
  println it
}

其中输出：

ID: 1, NAME: {foo,bar}, ADDRESS: {123,mainst,ny}
ID: 2, NAME: {abc,def}, ADDRESS: {124,mainst,Va}
ID: 3, NAME: {pqr,xyz}, ADDRESS: {125,mainst,IL}

因此，要获取第二行的NAME字段， ：

So, to get the NAME field of the second row, you could do:

def csvb = CsvParser.parseCsv( csv )
println csvb[ 1 ].NAME

这些打印

{abc,def}

当然，如果CSV是文件， p>

Of course, if the CSV is a File, you can do:

def csvc = new File( 'path/to/csv' ).withReader {
  CsvParser.parseCsv( it )
}

然后按上述使用

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