List的String类型集合转换为String小结

2022-06-14 16:28:51 浏览数 (1)

项目中可能会遇见需要将 List 内容拼接成以逗号分隔的字符串的形式,现对实现方式做个小结

方法一:

代码语言:javascript复制
public String listToString(List list, char separator) {    
    StringBuilder sb = new StringBuilder();    
    for (int i = 0; i < list.size(); i  ) {                
                 sb.append(list.get(i)).append(separator);    
           }    
            return sb.toString().substring(0,sb.toString().length()-1);
     }

方法二

代码语言:javascript复制
public String listToString(List list, char separator) {    
    StringBuilder sb = new StringBuilder();    
    for (int i = 0; i < list.size(); i  ) {        
        if (i == list.size() - 1) {            
           sb.append(list.get(i));        
        } else {            
          sb.append(list.get(i));            
          sb.append(separator);        
        }   
     }    
  return sb.toString();}

方法三

代码语言:javascript复制
public String listToString(List list, char separator) {    
  return org.apache.commons.lang.StringUtils.join(list.toArray(),separator);   
}

参考地址:https://www.cnblogs.com/mr-wuxiansheng/p/7739463.html

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