Java之将数组转化为字符串使用逗号隔开

方法一：

String array=["a","b","c"];
 String  str= StringUtils.join(array,",");

方法二：

使用循环

  String[] array=approveAuthorityDto.getPlantName().split(",");
        for (int i = 0; i <array.length ; i++) {
            array[i]=plantCodeMapper.getPlantCodeByPlantName(array[i]);
        }
        String  plantCode= StringUtils.join(array,",");
        System.out.println("str:"+plantCode);