1、数组与list转换

@Test
    public void array2List() {
        String[] strArray = { "aaa", "bbb", "ccc" };
        List<String> strList = new ArrayList<>();
        CollectionUtils.addAll(strList, strArray);
        logger.info("strList:{}",JSON.toJSONString(strList));
    }
    @Test
    public void array2List2() {
        String[] strArray = { "aaa", "bbb", "ccc" };
        List<String> strList =Arrays.asList(strArray);
        logger.info("strList:{}",JSON.toJSONString(strList));
    }

2、数组与set转换

@Test
    public void array2Set() {
        String[] strArray = { "aaa", "bbb", "ccc" };
        Set<String> strSet = new HashSet<>();
        CollectionUtils.addAll(strSet, strArray);
        logger.info("strSet:{}",JSON.toJSONString(strSet));
    }
    @Test
    public void array2Set2() {
        String[] strArray = { "aaa", "bbb", "ccc" };
        Set<String> strSet = new HashSet<>(Arrays.asList(strArray));
        logger.info("strSet:{}",JSON.toJSONString(strSet));
    }

3、List与Set转换

@Test
    public void list2Set(){
        String[] strArray = { "aaa", "bbb", "ccc" };
        List<String>list=Arrays.asList(strArray);
        Set<String> strSet = new HashSet<>(list);
        logger.info("strSet:{}",JSON.toJSONString(strSet));
    }

4、Set与List转换

@Test
    public void set2List(){
        String[] strArray = { "aaa", "bbb", "ccc" };
        Set<String> strSet = new HashSet<>(Arrays.asList(strArray));
        List<String>strList=new ArrayList<>(strSet);
        logger.info("strList:{}",JSON.toJSONString(strList));
    }

5、Map与Set转换

@Test
    public void map2Set(){
        Map<String,String>map=new HashMap<>();
        map.put("aa", "bb");
        map.put("cc", "dd");
        Set<String> strSet=map.keySet();
        logger.info("strSet:{}",JSON.toJSONString(strSet));
        Set<String> strSet2=new HashSet<>(map.values());
        logger.info("strSet2:{}",JSON.toJSONString(strSet2));
    }

6、Map与List转换

@Test
    public void map2List(){
        Map<String,String>map=new HashMap<>();
        map.put("aa", "bb");
        map.put("cc", "dd");
        List<String> strList=new ArrayList<>(map.keySet());
        logger.info("strList:{}",JSON.toJSONString(strList));
        List<String> strList2=new ArrayList<>(map.values());
        logger.info("strList2:{}",JSON.toJSONString(strList2));
    }