我在正则表达式中遇到问题。当表达式设置在字符串中时,它给出了一个错误。看看这个!我想在数组中返回一个具有我搜索值的对象,例如"Daventry"
我正在使用:{[^{}]]*Daventry[^{}]]*}
[
{
"id": 113548,
"name": "Daventry",
"state_id": 1446,
"state_name": "Northamptonshire",
"state_code": "J1",
"country_id": 232,
"country_name": "United Kingdom",
"country_code": "GB",
"country_flag": "GB.png",
"currency_code": "GBP",
"currency_symbol": "£"
},
{
"id": 192392,
"name": "Daverdisse",
"state_id": 484,
"state_name": "Luxembourg",
"state_code": "06",
"country_id": 22,
"country_name": "Belgiumn",
"country_code": "BE",
"country_flag": "BE.png",
"currency_code": "EUR",
"currency_symbol": "€"
},
{
"id": 115981,
"name": "Davey",
"state_id": 4138,
"state_name": "Nebraska",
"state_code": "NE",
"country_id": 233,
"country_name": "United Statesn",
"country_code": "US",
"country_flag": "US.png",
"currency_code": "USD",
"currency_symbol": "$"
},
{
"id": 142184,
"name": "David",
"state_id": 3350,
"state_name": "Neamt",
"state_code": "28",
"country_id": 181,
"country_name": "Romanian",
"country_code": "RO",
"country_flag": "RO.png",
"currency_code": "RON",
"currency_symbol": "lei"
},
{
"id": 108261,
"name": "David",
"state_id": 4127,
"state_name": "Kentucky",
"state_code": "KY",
"country_id": 233,
"country_name": "United Statesn",
"country_code": "US",
"country_flag": "US.png",
"currency_code": "USD",
"currency_symbol": "$"
}
]
仅返回:
[
{
"id": 113548,
"name": "Daventry",
"state_id": 1446,
"state_name": "Northamptonshire",
"state_code": "J1",
"country_id": 232,
"country_name": "United Kingdom",
"country_code": "GB",
"country_flag": "GB.png",
"currency_code": "GBP",
"currency_symbol": "£"
}
]
但是会出现以下错误:
java.util.regex.PatternSyntaxException:正则表达式模式中的语法错误接近索引1:10-27 09:53:48.297 15052-15052/com.plugapps.freecommerceE/AndroidRuntime:{[/^{}]]Daventry[/^}]]}
我该怎么办?
在regex表达式中,'{'、'['等是特殊字符,需要转义,所以应该使用{
来表示{
,所以您的refex表达式是错误的,所以会引发这样的异常。
实际上,我不建议您在您的情况下使用regex experssion进行搜索,您最好解析一个jsonaray并检查每个jsonobject的名称。