for(Map<String,Object> map : lstp){ for(String key : map.keySet()){ System.out.println(key+":"+map.get(key)); } } //普通for循环; System.out.println("***普通for循环遍历***"); for(int i=0;i<lstp.size();i++) { Map<String,Object> map = lstp.get(i); Iterator<String> ...
Map.Entry<String,Object> entry = entryIterator.next(); System.out.println("Key: " + entry.getKey() +", Value: " + entry.getValue()); } } 使用Java 8的Stream API javaList<Map<String, Object>> list =// 初始化你的List list.forEach(map ->map.forEach((key, value) -> { System...
// 遍历Map集合 for (Map.Entry<String, Object> entry : map.entrySet() String key = entry.getKey(; Object value = entry.getValue(; //输出键和值 System.out.println("Key: " + key); // 如果值是String类型,则将其转换为String并输出 if (value instanceof String) String stringValue = (St...
Map map = new HashMap(); map.put("key1", "value1"); map.put("key2", "value2"); List<Map<String,object>> list = new ArrayList>(); list.add(map); for (Map<Strirng,Object> m : list) { for (String k : m.keySet()){ //m.keyset方法得到所有key的集合,返回值为set集合 Syst...
map = new HashMap<String,Object>();map.put("xk", i+"");map.put("dydsxm", i+"");jbxx.add(map);} //取值过程 for(Map<String,Object> m : jbxx ){ String xk = m.get("xk")==null?"":(String)m.get("xk");String dydsxm= m.get("dydsxm")==null?"":(String)...
Map<String, String> map =newHashMap<String, String>(); map.put("1", "value1"); map.put("2", "value2"); map.put("3", "value3");//第一种:普遍使用,二次取值System.out.println("通过Map.keySet遍历key和value:");for(String key : map.keySet()) { ...
先遍历List 对于每一个Map值，要获取String的话，就是要获取它的key值集合，LZ可以看一下api，有这个方法的，貌似得到的结果是一个set集合，遍历这个set集合便可以得到每一个String值，从而也可以获取到对应的Object
Map<String, Object> map1 = new LinkedHashMap<String, Object>(); map1.put("sort", 3); map1.put("name", "小明"); map1.put("id", "1"); listResult.add(map1); Map<String, Object> map2 = new LinkedHashMap<String, Object>(); ...
要把List<Map<String, Object>>里面key为"Name", "Phone", "daan"获取然后放到List<Question> list Question.java public class Question { public String question; public String answerA; public String answerB; public String answerC; public String answerD; public int answer; public String explaination;...