lamada List对象属性值转数组array

// 过滤list数据 
List<SysUser> newList = list.stream().filter(rs -> "companyCode".equals(rs.getCompanyCode()) && StringUtils.isNotBlank(rs.getEmail())).collect(Collectors.toList());

// list数据并转array 
DateTimeFormatter df = DateTimeFormatter.ofPattern("yyyy-MM-dd");
String[] arr = list.stream().map(s->s.getStartDate().format(df)).toArray(String[]::new))

// 过滤list数据并转array 
Double[] arr = list.stream()
.filter(rs -> "email".equals(rs.getEmail()) && StringUtils.isNotBlank(rs.getEmail()))
.map(SysUser:: getEmail).toArray(String[] :: new)
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