我正在编写一个程序来解析基于键值的日志,如下所示:
dstcountry="United States" date=2018-12-13 time=23:47:32
我正在使用Univocity解析器来做到这一点。这是我的代码。
CsvParserSettings parserSettings = new CsvParserSettings();
parserSettings.getFormat().setDelimiter(' ');
parserSettings.getFormat().setQuote('"');
parserSettings.getFormat().setQuoteEscape('"');
parserSettings.getFormat().setCharToEscapeQuoteEscaping('"');
CsvParser keyValueParser = new CsvParser(parserSettings);
String line = "dstcountry=\"United States\" date=2018-12-13 time=23:47:32";
String[] resp = keyValueParser.parseLine(line);
但是解析器给了我这个输出:
dstcountry="United,
States",
date=2018-12-13,
time=23:47:32
预期输出为
dstcountry="United States",
date=2018-12-13,
time=23:47:32
代码是否存在问题,或者这是解析器错误?
致谢,
哈里
答案 0 :(得分:0)
我最终编写了自己的解析器。如果有人需要,我在这里粘贴以供将来参考。欢迎提出建议和意见。
import UIKit
let json = """
[
[
{
"id": 22,
"request_id": "rqst5c12fc9e856ae1.06631647",
"business_name": "Code Viable",
"business_email": "code@viable.com",
"title": "Apache Load/Ubuntu",
}
],
[
{
"id": 24,
"request_id": "rqst5c130cae6f7609.41056231",
"business_name": "Code Viable",
"business_email": "code@viable.com",
"title": "Load",
}
]
]
"""
struct ResponseObject: Codable {
let id: Int?
let requestId: String?
let businessName: String?
let businessEmail: String?
let title: String?
}
if let data = json.data(using: .utf8) {
let decoder = JSONDecoder()
decoder.keyDecodingStrategy = .convertFromSnakeCase
do {
let parsedResponse = try decoder.decode([[ResponseObject]].self, from: data)
print(parsedResponse)
} catch {
print(error.localizedDescription)
}
}
答案 1 :(得分:0)
此处是库的作者。这不是解析器错误。这里的问题是您没有解析CSV文件。
当解析器看到:dstcountry="United
,后跟一个空格(这是您的分隔符)时,它将认为它是一个值。
引号设置仅适用于以引号字符开头的字段。由于您的输入不是"dstcountry=""United States"""
,因此解析器将无法根据需要进行处理。没有CSV解析器可以帮您做到这一点。
同样,您未在处理CSV。您在这里唯一能做的就是使用2个解析器实例:一个分解在=
周围的行,另一个分解在第一个解析器的结果中由分隔的值。例如:
CsvParserSettings parserSettings = new CsvParserSettings();
//break down the rows around the `=` character
parserSettings.getFormat().setDelimiter('=');
CsvParser keyValueParser = new CsvParser(parserSettings);
String line = "dstcountry=\"United States\" date=2018-12-13 time=23:47:32";
String[] keyPairs = keyValueParser.parseLine(line);
//break down each value around the whitespace.
parserSettings.getFormat().setDelimiter(' ');
CsvParser valueParser = new CsvParser(parserSettings);
//add all values to a list
List<String> row = new ArrayList<String>();
for(String value : keyPairs){
//if a value has a whitespace, break it down using the the other parser instance
String[] values = valueParser.parseLine(value);
Collections.addAll(row, values);
}
//here is your result
System.out.println(row);
这将打印出来:
[dstcountry, United States, date, 2018-12-13, time, 23:47:32]
您现在有了键值。以下代码将根据需要将其打印出来:
for (int i = 0; i < row.size(); i += 2) {
System.out.println(row.get(i) + " = " + row.get(i + 1));
}
输出:
dstcountry = United States
date = 2018-12-13
time = 23:47:32
希望这会有所帮助,并感谢您使用我们的解析器!