list中内容转化为逗号分隔的字符串

这篇写的挺全

http://www.cnblogs.com/hui-blog/p/6375174.html

实际项目经常用到的

方法1
String symbol = Joiner.on(",").join(symbolList);

方法2：

String symbol = StringUtils.join(symbolList.toArray(), ",");

用来代替下面的方法

 StringBuffer sb = new StringBuffer();
 for(Object _symbol : symbolList){
      sb.append("'").append(_symbol).append("',");
 }

转载于:https://www.cnblogs.com/developer-os/p/7754107.html