js查找字符串、js截取

js查找元素、js查找字符串

    let index=data.indexOf(",");

js截取、js截取字符串

            $("#bankurl_id").val(data.substring(0,index));
            $("#bankname").val(data.substring(index+1));

 js字符串转数组

      let a = typeId.split('#');

 java字符串转数组，数组转集合

        String[] split = dates.split(",");
        List<String> list2 = Arrays.asList(split);

数组json字符串转集合

          ArrayList<String> json = gson.fromJson(s, ArrayList.class);

 集合转数组

        List<String> a = new ArrayList<>();
        a.add("a");
        a.add("b");
        a.add("c");
        String[] st = a.toArray(new String[]{});
        Arrays.stream(st).filter(s -> s.length()>0).forEach(System.out::println);

 

       //从list集合中，取出字段name的列表
        List<String> names = list.stream().map(p -> p.getName()).collect(Collectors.toList());

 

import org.apache.commons.lang.StringUtils;

List<String> list = new ArrayList<>();
list.add("aa");
list.add("bb");
list.add("cc");
// 打印集合list
System.out.println(list);
// 将集合转换成字符串
String str = StringUtils.join(list, ",");