Question

我正在尝试查找Java子字符串，然后将其删除而不删除字符串的其余部分。

我将XML作为输入，并希望删除已弃用的标记，例如：

public class whatever {
    public static void main(String[] args) {

    String uploadedXML = "<someStuff>Bats!</someStuff> <name></name>";
    CharSequence deleteRaise = "<name>";

    // If an Addenda exists we continue with the process    
    if (xml_in.contains(deleteRaise)){
        // delete
    } else {
        // Carry on
    }
}

在那里，我想删除<name>和</name>标记（如果它们包含在字符串中），同时离开<someStuff>和</someStuff>。

我已经将XML解析为String，所以没有问题。我需要知道如何找到特定字符串并删除它们。

Answer 1

您可以使用replaceAll(regex, str)执行此操作。如果您不熟悉正则表达式，则?仅表示字符串中0 or 1出现/次，因此它涵盖<name>和{{1} }}

</name>

String uploadedXML = "<someStuff>Bats!</someStuff> <name></name>";
String filter = "</?name>";
uploadedXML = uploadedXML.replaceAll(filter, "");

System.out.println(uploadedXML);

Answer 2

String uploadedXML = "<someStuff>Bats!</someStuff> <name></name>";
String deleteRaise = "<name>";
String closeName = "</name>"
// If an Addenda exists we continue with the process    
if (xml_in.contains(deleteRaise)){
    uploadedXML.replace(uploadedXML.substring(uploadedXML.indexOf(deleteRaise),uploadedXML.indexOf(closeName)+1),"");
} else {
    // Carry on
}enter code here

在Java中查找和删除子字符串

2 个答案: