Question

JAVA正则表达式获取大括号内容

例：
jdbc=jdbc:jtds:sqlserver://{databaseIp}:{databasePort}{instanceName};databaseName={databaseName};
user={databaseUser}
passoword={databasePassowrd}

怎么使用正则获取字符串为：{databaseIp}、{databasePort}、{instanceName}、{databaseName}、{databaseUser}、{databasePassowrd}
求大神解答

Answer 1

代码如下：

import java.util.ArrayList;

import java.util.List;

import java.util.regex.Matcher;

import java.util.regex.Pattern;

public class Test {

public static void main(String[] args) throws Exception {

String test = "{databaseIp}:{databasePort}{instanceName};database";

List<String> ls=new ArrayList<String>();

Pattern pattern = Pattern.compile("(?<=\\{)(.+?)(?=\\})");

Matcher matcher = pattern.matcher(test);

while(matcher.find()){

ls.add(matcher.group());

}

for (String string : ls) {

System.out.println(string);

}

}

正则表达式语法实例：

public static void main(String[] args) {

// 要验证的字符串

String str = "service@xsoftlab.net";

// 邮箱验证规则

String regEx = "[a-zA-Z_]{1,}[0-9]{0,}@(([a-zA-z0-9]-*){1,}\\.){1,3}[a-zA-z\\-]{1,}";

// 编译正则表达式

Pattern pattern = Pattern.compile(regEx);

// 忽略大小写的写法

// Pattern pat = Pattern.compile(regEx, Pattern.CASE_INSENSITIVE);

Matcher matcher = pattern.matcher(str);

// 字符串是否与正则表达式相匹配

boolean rs = matcher.matches();

System.out.println(rs);

}

Answer 2

import java.util.ArrayList;
import java.util.List;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Test {

public static void main(String[] args) throws Exception {
String test = "{databaseIp}:{databasePort}{instanceName};database";
List<String> ls=new ArrayList<String>();
Pattern pattern = Pattern.compile("(?<=\\{)(.+?)(?=\\})");
Matcher matcher = pattern.matcher(test);
while(matcher.find()){
ls.add(matcher.group());
}
for (String string : ls) {
System.out.println(string);
}
}

Answer 3

String express = "(\\{\\w+\\})";
Matcher match = Pattern.compile(express).matcher(home);
		
while (match.find()) {
    System.out.println(match.group(1));
}