Question

我在正则表达式中遇到问题。在字符串中设置表达式时出错。看这个！我想在Array中返回一个具有my search值的对象，例如“Daventry。”

我正在使用：'YYYY-MM-DD HH:MM:SS'

{[^{}\]]*Daventry[^{}\]]*}

只返回：

[
    {
        "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": "£"
    },
    {
        "id": 192392,
        "name": "Daverdisse",
        "state_id": 484,
        "state_name": "Luxembourg",
        "state_code": "06",
        "country_id": 22,
        "country_name": "Belgium\n",
        "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 States\n",
        "country_code": "US",
        "country_flag": "US.png",
        "currency_code": "USD",
        "currency_symbol": "$"
    },
    {
        "id": 142184,
        "name": "David",
        "state_id": 3350,
        "state_name": "Neamt",
        "state_code": "28",
        "country_id": 181,
        "country_name": "Romania\n",
        "country_code": "RO",
        "country_flag": "RO.png",
        "currency_code": "RON",
        "currency_symbol": "lei"
    },
    {
        "id": 108261,
        "name": "David",
        "state_id": 4127,
        "state_name": "Kentucky",
        "state_code": "KY",
        "country_id": 233,
        "country_name": "United States\n",
        "country_code": "US",
        "country_flag": "US.png",
        "currency_code": "USD",
        "currency_symbol": "$"
    }
]

但是会出现以下错误：

java.util.regex.PatternSyntaxException：regexp模式中的语法错误在索引1：10-27 09：53：48.297 15052-15052 / com.plugapps.freecommerce E / AndroidRuntime：{[/ ^ {}]] Daventry [/ ^ {}]]}

我该怎么办？

Answer 1

在正则表达式中，'{'，'['等等是特殊字符，需要进行转义，因此您应该使用\{来表达{，因此您的refex表达式是错误的，所以这样的例外抛出。
实际上我不建议你使用正则表达式来搜索你的情况，你最好解析一个jsonarray并检查每个jsonobject的名字。

Android - Java Regex - 索引附近的regexp模式中的语法错误

1 个答案: