springboot @Value 读取数组，List, Map等配置文件

test:
array1: aaa,bbb,ccc

@Value("${test.array1}")
private String[] testArray1; // 不判断空

@Value("${test.array1:}")
private String[] testArray1; // 判断空length = 0。

test:
list: aaa,bbb,ccc

@Value("#{'${test.list}'.split(',')}")
private List<String> testList; //不判断空

@Value("#{'${test.list:}'.split(',')}")
private List<String> testList; //判断空 length=1 有一个“”元素

@Value("#{'${test.list:}'.empty ? null : '${test.list:}'.split(',')}")
private List<String> testList; //判断空 null

test:
set: 111,222,333,111

@Value("#{'${test.set:}'.empty ? null : '${test.set:}'.split(',')}")
private Set<Integer> testSet;

test:
map1: '{"name": "zhangsan", "sex": "male"}'

@Value("#{${test.map1}}")
private Map<String,String> map1;