PAS/src/main/java/cn/cslg/pas/common/utils/esUtils/GetPatentNoUtils.java

package cn.cslg.pas.common.utils.esUtils;

import org.springframework.stereotype.Component;

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

/**
 * 获取专利号
 */
@Component
public class GetPatentNoUtils {
    /**
     * 返回专利号
     * @param var
     * @return
     */
    public String getPatentNo(String var) {
        int fixedLength = 13;
        int fixedLength1 = 15;
        String fixedSymbol = ".";

        String s = "";
        if (var == null) {
            return s;
        }

        if (var.length() == fixedLength || var.length() == fixedLength1) {
            String frontPart = var.substring(0, var.length() - 1);
            String afterPart = var.substring(var.length() - 1);
            var = frontPart + fixedSymbol + afterPart;
        }
        //使用正则表达式匹配前两位是否为字母
        Pattern pattern = Pattern.compile("^[a-zA-Z]{2}");
        Matcher matcher = pattern.matcher(var);
        boolean flag = matcher.find();
        if (!flag) {
            s = "CN" + var;
        } else {
            s = var;
        }
        return s;
    }
}