List<String> list = new ArrayList<>();
list.add("y12");
list.add("w23");
list.add("r2");
list.add("y23");
String str="haha:lala";
Project project =new Project();
project.setL0name("China");
project.setL1name("Guangdong");
project.setL2name("Dongguan");
project.setEditors(list);
Map<String, Project> map=new LinkedHashMap<>();
map.put("pro", project);
//转为JSON对象的对象
System.out.println(JSON.toJSON(map));
// 转为json对象的字符串
System.out.println(JSON.toJSONString(map));
System.out.println(JSON.toJSONString(JSON.toJSON(map)));
//就是一个字符串
System.out.println(JSON.toJSONString(JSON.toJSONString(map)));
输出结果:
{"pro":{"l1name":"Guangdong","l0name":"China","l2name":"Dongguan","editors":["y12","w23","r2","y23"]}}
{"pro":{"editors":["y12","w23","r2","y23"],"l0name":"China","l1name":"Guangdong","l2name":"Dongguan"}}
{"pro":{"l1name":"Guangdong","l0name":"China","l2name":"Dongguan","editors":["y12","w23","r2","y23"]}}
"{\"pro\":{\"editors\":[\"y12\",\"w23\",\"r2\",\"y23\"],\"l0name\":\"China\",\"l1name\":\"Guangdong\",\"l2name\":\"Dongguan\"}}"
参考:
"haah"+JSON.toJSONString(JSON.toJSONString(project.getEditors()))
(java.lang.String) haah"[\"张三\",\"李四\"]"
"haha"+JSON.toJSONString(project.getViewers())
(java.lang.String) haha["四"]
"haha"+JSON.toJSON(project.getScenes())
(java.lang.String) haha["测试"]
