Fastjson解析嵌套Map例子

由于在实际工作中使用fastjson解析嵌套map的场景非常多，所以在此备忘一下：

引入阿里的fastjson的pom： ““ com.alibaba fastjson 1.2.15

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一个比较复杂的json例子： { "actId": "1800025", "originCode": 1, "role": "TEACHER", "time": 1471077017804, "userId": "1111", "userName": "测试教师", "userIcon": "xyz", "userIp": "1.1.1.1", "countyId": "370105", "countyName": "天桥区", "schoolId": "1234", "schoolName": "测试小学", "data": { "subjectId": "020", "subjectName": "数学", "uploadFileList": [ { "teachFileType": "1", "custom": "xtz" }, { "teachFileType": "1" } ] } }

使用fastjson的解析代码： ““java import com.alibaba.fastjson.JSON;

import java.util.List; import java.util.Map;

/** * Created by Administrator on 2016/8/12. */ public class ParserJson {

/*** * * @param map 需要打印的Map结构 */ public static void showMap(Map<String,Object> map){ for(Map.Entry<String,Object> kv:map.entrySet()){ System.out.println(kv.getKey()+" "+kv.getValue()); } } public static void main(String[] args) throws Exception { String json="{\"actId\":\"2300003\",\"originCode\":1,\"role\":\"TEACHER\"" + ",\"time\":1470126407000,\"userId\":\"1111\",\"userName\":\"测试教师\",\"userIcon\":\"xyz\",\"userIp\":\"1.1.1.1\",\"countyId\":\"370105\",\"countyName\":\"天桥区\",\"schoolId\":\"1234\",\"schoolName\":\"测试小学\",\"data\":{\"subjectId\":\"020\",\"subjectName\":\"数学\"," + "\"uploadFileList\":[{\"teachFileType\":\"1\"},{\"teachFileType\":\"1\",\"custom\":\"xt\"},{\"teachFileType\":\"1\"}]}}"; Map<String,Object> map=(Map)JSON.parse(json); System.out.println("打印第一层map"); showMap(map); Map<String,Object> dataMap=(Map<String, Object>) map.get("data"); System.out.println("打印第二层map"); showMap(dataMap); System.out.println("打印第三层list+map"); List<Map<String,Object>> fileList= (List<Map<String, Object>>) dataMap.get("uploadFileList"); for(Map<String,Object> soj:fileList){ System.out.println(soj); Map<String,Object> detailData=soj; showMap(detailData); System.out.println("----------------------------------------"); } }

}

解析结果： ParserJson 打印第一层map role TEACHER data {“uploadFileList”:[{“teachFileType”:”1”},{“custom”:”xt”,”teachFileType”:”1”},{“teachFileType”:”1”}],”subjectId”:”020”,”subjectName”:”数学”} actId 2300003 userName 测试教师 userId 1111 countyId 370105 schoolId 1234 userIp 1.1.1.1 originCode 1 time 1470126407000 userIcon xyz schoolName 测试小学 countyName 天桥区 打印第二层map uploadFileList [{“teachFileType”:”1”},{“custom”:”xt”,”teachFileType”:”1”},{“teachFileType”:”1”}] subjectId 020 subjectName 数学 打印第三层list+map {“teachFileType”:”1”}

teachFileType 1

{“custom”:”xt”,”teachFileType”:”1”} custom xt

teachFileType 1

{“teachFileType”:”1”}

teachFileType 1

Process finished with exit code 0

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