问题描述

求大神解析一下这个JSON

Value {"data":[{"school_name":"西北农林科技大学","school_id":"8"},{"school_name":"西北大学","school_id":"6"},{"school_name":"西北工业大学","school_id":"5"},{"school_name":"西北政法大学","school_id":"2"},{"school_name":"西安交通大学","school_id":"4"},{"school_name":"西安建筑科技大学","school_id":"10"},{"school_name":"西安电子科技大学","school_id":"3"},{"school_name":"西安邮电大学","school_id":"1"},{"school_name":"长安大学","school_id":"9"},{"school_name":"陕西师范大学","school_id":"7"},{"school_name":"陕西科技大学","school_id":"11"}],"msg":"列表获取成功","status":0}
用2个数组接收school_name和school_id
用java里的方法

解决方案

//第一次解析；
public Map parseStatus(String JSONStr) {
JSONArray jsonArray = JSONArray.fromObject(JSONStr);
int n = jsonArray.size();
Map map = new HashMap();
for (int i = 0; i < n; i++) {
JSONObject obj = jsonArray.getJSONObject(i);
if (obj == null)
continue;
if (obj.containsKey("data")) {
map.put("data", obj.getString("data"));
}
if (obj.containsKey("status")) {
map.put("status", obj.getString("status"));
}
if(obj.containsKey("msg")){
map.put("msg", obj.getString("msg"));
}
}
return map;
}
//拿到map中data；
String JSONSchool=map.get("data").toString();
public List parseschool(String JSONSchool){
List schoolVoList=new ArrayList();
JSONArray jsonArray = JSONArray.fromObject(JSONStr);
int n = jsonArray.size();
for (int i = 0; i < n; i++) {
JSONObject obj = jsonArray.getJSONObject(i);
SchoolVo schoolVo=new SchoolVo();
if (obj == null)
continue;
if (obj.containsKey("school_name")) {
schoolVo.setF_jht_name(obj.getString("school_name"));
}
if (obj.containsKey("school_id")) {
schoolVo.setF_jht_id(obj.getInt("school_id"));
}
schoolVoList.add(schoolVo);
}
return schoolVoList;
}

解决方案二：

楼上答的很漂亮啊

解决方案三：

使用json-lib-2.2.2-jdk15.jar进行JSON解析。示例代码：可直接运行，需要jar可百度或者联系我。

 import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.util.HashMap;
import java.util.Map;

import net.sf.json.JSONArray;
import net.sf.json.JSONObject;

public class JSONParse {
    public static void main(String[] args) {

        String value = read("src/json.txt",null);
        Map<String,String> map = parseSchoolInfo(value);
        if(map!=null){
            System.out.println(map.toString());
        }else{
            System.out.println("no data parsed.");
        }

    }

    public static Map<String,String> parseSchoolInfo(String json){
        if(json==null||"".equals(json)){
            System.out.println("empty json.");
            return null;
        }

        JSONObject object = JSONObject.fromObject(json);
        if(object==null||!object.containsKey("data")){
            System.out.println("没有数据信息.");
            return null;
        }

        if(!object.containsKey("status")||object.getInt("status")!=0){
            System.out.println("信息状态错误.");
            return null;
        }

        JSONArray schoolArray = object.getJSONArray("data");
        if(schoolArray==null||schoolArray.size()==0){
            System.out.println("没有解析到数据信息");
            return null;
        }

        //最终遍历data中的JSON数组解析存入map
        Map<String,String>schools = new HashMap<String,String>();
        for(int i = 0;i<schoolArray.size();i++){
            JSONObject school = schoolArray.getJSONObject(i);
            String school_name = school.getString("school_name");
            String school_id = school.getString("school_id");
            schools.put(school_id, school_name);
        }

        return schools;
    }

    /**
     * 读取指定文件的文本内容，返回文本值是一个长串，原文本中的换行不会被读入
     * @param  fileName 文件名称
     * @return
     */
    public static String read(String fileName,String charSet){
        if(fileName==null||"".equals(fileName)){
            System.out.println("文件名称为空...");
            return "";
        }

        //设置字符编码
        if(charSet==null||"".equals(charSet)){
            charSet = "UTF-8";
        }

        File file = new File(fileName);
        FileInputStream fin = null;
        StringBuffer buffer = new StringBuffer();
        try {
            fin = new FileInputStream(file);
            BufferedReader reader = new BufferedReader(new InputStreamReader(fin,charSet));
            String content = reader.readLine();
            while(content!=null){
                buffer.append(content);
                //循环读取下一行，没有这行代码就是死循环的啦。。。
                content = reader.readLine();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            if(fin!=null){
                try {
                    fin.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

        return buffer.toString();
    }
}

解决方案四：

{data:
[
{
"school_name":"西北农林科技大学",
"school_id":"8"
}
]
}
看清楚结构了吗？
1，先创建一个类Info，就两个属性，school_name，school_id
2，用gson直接将json转换成List，完事儿。。。