Java List<String>转字符串逗号隔开且带单引号字符串

写这个方法背景在于,Mybatis传IN参数

1.将List<String>集合 转化为'1','2','3','4','5'

import org.apache.commons.lang.StringUtils;

public class StrUtils {
	/**
	 * 将List<String>集合 转化为String
	 * 如{"aaa","bbb"} To 'aaa','bbb'
	 */
	public static String listToString(List<String> stringArray,String separator){
		StringBuilder sb = new StringBuilder();
		sb.append("'");
		sb.append(StringUtils.join(stringArray.toArray(),separator));
		sb.append("'");
		return sb.toString();
	}

	public static void main(String[] args) {
		List<String> array =new  ArrayList<String>();
		array.add("aaa");
		array.add("bbb");
		String listToString = listToString(array, "','");
		System.out.println(listToString);
	}
}

 

2. 将"1,2,3,4,5..."这种形式的字符串转成"'1','2','3','4'..."这种形式

/***
	 * 将"1,2,3,4,5..."这种形式的字符串转成List<String> 集合
	 * @param strs
	 * @return
	 * */
	
	public static List<String> converStringToList(String strs) {
		if (StringUtils.isNotBlank(strs)) {
			String[] idStrs = strs.trim().split(",");
			if (null != idStrs && idStrs.length > 0) {
				List<String> strsList = new ArrayList<String>();
				for (String str : idStrs) {
					if (StringUtils.isNotBlank(str)) {
						strsList.add(str.trim());
					}
				}
				if (strsList.size() > 0) {
					return strsList;
				}
			}
		}
		return null;
	}

3.将"1,2,3,4,5..."这种形式的字符串转成List<String> 集合

/**
	 将"1,2,3,4,5..."这种形式的字符串转成"'1','2','3','4'..."这种形式
	 
	 @param strs
	 @return
	 */
	public static String converString(String strs) {
		if (StringUtils.isNotBlank(strs)) {
			String[] idStrs = strs.trim().split(",");
			if (null != idStrs && idStrs.length > 0) {
				StringBuffer sbf = new StringBuffer("");
				for (String str : idStrs) {
					if (StringUtils.isNotBlank(str)) {
						sbf.append("'").append(str.trim()).append("'").append(",");
					}
				}
				if (sbf.length() > 0) {
					sbf = sbf.deleteCharAt(sbf.length() - 1);
					return sbf.toString();
				}
			}
		}
		return "";
	}