String s= "安徽省合肥市肥西县上派镇";

//        String regex="(\\?[^省]+自治区|.*?省|.*?行政区|.*?市)(\\?[^市]+自治州|.*?地区|.*?行政单位|.+盟|市辖区|.*?市|.*?县)(\\?[^县]+县|.+?区|.+市|.+旗|.+海域|.+岛)?(\\?[^区]+区|.+镇)?(\\?.*)";

        String regex="((?<province>[^省]+省|.+自治区)|上海|北京|天津|重庆)(?<city>[^市]+市|.+自治州)(?<county>[^县]+县|.+区|.+旗|.+海域|.+岛)?(?<town>[^乡].+镇.+乡)?(?<village>.*)";

        Matcher m=Pattern.compile(regex).matcher(s);

//        Matcher m = r.matcher(s);

        while (m.find()) {

            System.out.println("Found value: " + m.group(0) );

            System.out.println("Found value: " + m.group(1) );

            System.out.println("Found value: " + m.group(2) );

            System.out.println("Found value: " + m.group(3) );

            System.out.println("1111111111111111111111111111111111111");

            System.out.println("Found value: " + m.group("province") );

            System.out.println("Found value: " + m.group("city") );

            System.out.println("Found value: " + m.group("county") );

            System.out.println("Found value: " + m.group("town") );

            System.out.println("Found value: " + m.group("village") );

        }

            System.out.println("NO MATCH");

//select  

<el-form-item label="省市区" prop="shszssq">
  <v-distpicker v-model="form.shszssq"
    :province="select.province"
    :city="select.city"
    :area="select.area"
    @selected="selected"
  ></v-distpicker>

</el-form-item>

//省市区截取

    selected(data){

      this.form.shszssq = data.province.value+data.city.value+data.area.value;

    },


    //省市区截取

    getArea(str) {

      var str = str;

      var reg = /.+?(省|市|自治区|自治州|行政区|盟|旗|县|区)/g // 省市区的正则

      const area = str.match(reg) // 分割省市区

      // console.log(area) // ['内蒙古自治区', '锡林郭勒盟', '正镶白旗']

      /*var len = 0

      for (var i = 0; i < area.length; i++) { // 获取省市区的长度

        len += area[i].length

      }

      area.push(str.substring(len)) // 获取省市区之后的字符串

      console.log(area) // ['内蒙古自治区', '锡林郭勒盟', '正镶白旗', '前进大街2699号']

      for (var j = 0; j < area.length; j++) {

        console.log(area[j])

      }*/

      return area;

    },

var area =this.getArea(this.form.shszssq);
this.select ={ province: area[0], city: area[1], area: area[2]  }