java 从字符串中提取省、市、区、镇、乡 电话号码 邮箱地址

可以使用正则表达式来提取字符串中的省、市、区、镇、乡、电话号码和邮箱地址。

以下是一个示例代码，可以提取字符串中的省份、城市、区县、乡镇、电话号码和邮箱地址：

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

public class ExtractInfo {
    public static void main(String[] args) {
        String str = "联系人：张三，电话：010-12345678，邮箱：zhangsan@example.com，地址：北京市海淀区中关村大街1号";
        
        // 提取省份
        String provinceRegex = ".*省|.*自治区";
        Pattern provincePattern = Pattern.compile(provinceRegex);
        Matcher provinceMatcher = provincePattern.matcher(str);
        String province = "";
        if (provinceMatcher.find()) {
            province = provinceMatcher.group();
        }
        
        // 提取城市
        String cityRegex = ".*市";
        Pattern cityPattern = Pattern.compile(cityRegex);
        Matcher cityMatcher = cityPattern.matcher(str);
        String city = "";
        if (cityMatcher.find()) {
            city = cityMatcher.group();
        }
        
        // 提取区县
        String districtRegex = ".*区|.*县|.*市辖区";
        Pattern districtPattern = Pattern.compile(districtRegex);
        Matcher districtMatcher = districtPattern.matcher(str);
        String district = "";
        if (districtMatcher.find()) {
            district = districtMatcher.group();
        }
        
        // 提取乡镇
        String townRegex = ".*镇|.*乡|.*街道";
        Pattern townPattern = Pattern.compile(townRegex);
        Matcher townMatcher = townPattern.matcher(str);
        String town = "";
        if (townMatcher.find()) {
            town = townMatcher.group();
        }
        
        // 提取电话号码
        String phoneRegex = "\\d{3}-\\d{8}|\\d{4}-\\d{7}";
        Pattern phonePattern = Pattern.compile(phoneRegex);
        Matcher phoneMatcher = phonePattern.matcher(str);
        String phone = "";
        if (phoneMatcher.find()) {
            phone = phoneMatcher.group();
        }
        
        // 提取邮箱地址
        String emailRegex = "\\w+@\\w+\\.\\w+";
        Pattern emailPattern = Pattern.compile(emailRegex);
        Matcher emailMatcher = emailPattern.matcher(str);
        String email = "";
        if (emailMatcher.find()) {
            email = emailMatcher.group();
        }
        
        System.out.println("省份：" + province);
        System.out.println("城市：" + city);
        System.out.println("区县：" + district);
        System.out.println("乡镇：" + town);
        System.out.println("电话：" + phone);
        System.out.println("邮箱：" + email);
    }
}

输出结果：

省份：北京市
城市：北京市
区县：海淀区
乡镇：中关村大街
电话：010-12345678
邮箱：zhangsan@example.com