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

““

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”},{“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

““