[英]Parsing Java String Special Character Error
我想解析一個字符串以獲取屬性的值。例如,我具有以下字符串: calling_number = + 385317KFWVM,call_direction = I,conversation_duration = 29,
每個屬性及其值用逗號分隔。我在名為MessageBean的類中聲明了每個屬性的名稱和類型。
public static void main(String[] args){
try {
MessageBean attributes_bean = MessageBean.parse("calling_number=+385317KFWVM, call_direction=I, conversation_duration=29,");
} catch (UnsupportedEncodingException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public class MessageBean {
private String calling_number;
private String call_direction;
private int conversation_duration;
public static MessageBean parse(String line) throws UnsupportedEncodingException {
MessageBean bean = new MessageBean();
line = URLDecoder.decode(line, "utf-8");
bean.setCalling_number(MessageBean.getParameter(line, "calling_number"));
bean.setCall_direction(MessageBean.getParameter(line, "call_direction"));
bean.setConversation_duration(Integer.parseInt(MessageBean.getParameter(line, "conversation_duration")));
return bean;
}
private static String getParameter(String line, String name) {
String value = "";
Pattern p = Pattern.compile(name + "=([^,]*),");
Matcher m = p.matcher(line);
if (m.find()) {
value = m.group(1);
}
return value;
}
}
我希望我的結果是+ 385317KFWVM,我29歲 。
相反,我得到385317KFWVM,我29歲,這意味着我錯過了+號。我知道我的正則表達式有問題。我已經嘗試了\\ +之類的所有方法,但仍然沒有得到正確的結果。有幫助嗎?
當您運行URLDecoder.decode(line,“ utf-8”)時,將從字符串中刪除+。
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