正则提取器和beanshell处理器组合，将提取的所有id拼接成字符串

1.添加正则表达式，提取所有id值

2.添加beanshell处理器将所有的id值拼接成字符串

方法一：

int N = Integer.parseInt(vars.get("build_matchNr"));
log.info(N.toString());
List list  = new ArrayList();
for(int i=1;i<=N;i++){
        String dig = vars.get("build_"+i+"_g1");
        log.info(dig);
        list.add(dig);
}
log.info(list.toString());
String id_data = String.join(",", list);
vars.put("id_list", id_data);

方法二：

int N = Integer.parseInt(vars.get("build_matchNr"));
log.info(N.toString());
String das = "";
for(int i=1;i<=N;i++){
        String dig = vars.get("build_"+i+"_g1");
        log.info(dig);
        das += dig + ",";
}
log.info(das);
vars.put("id_list", das);