1、引入pom文件
<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.73</version><scope>test</scope></dependency>
- 使用JSONObject 输出 int类型的map,是非json格式
importjava.util.HashMap;importjava.util.Map;importcom.alibaba.fastjson.JSONObject;publicclassJsonTest{publicstaticvoidmain(String[] args){Map<Integer,String> map=newHashMap<>();
map.put(1,"aaasa");
map.put(2,"bbbbb");
map.put(3,"ccccc");
map.put(4,"ddddd");
map.put(5,"eeeee");System.out.println(JSONObject.toJSONString(map));}}
- 输出结果