Json数据解析
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内容图文
-------》JSON(JavaScript Object Notation) 是一种轻量级的数据交换格式。
1：jar包
地址：
2：示例代码
目的：==》获取当前新闻分类的列表信息：
==》获取json网址：
http://litchiapi.jstv.com/api/GetFeeds?column=0&PageSize=20&pageIndex=1&val=100511D3BE5301280E0992C73A9DEC41
json源：
{
"status": "ok",
"paramz": {
"feeds": [
{
"id": 280247,
"oid": 410,
"category": "topic",
"data": {
"subject": "天津爆炸死亡人数增至44人",
"summary": "截至今日12时，此次爆炸事故共造成44人死亡，其中包括12名消防官兵。",
"cover": "/Attachs/Topic/410/1c11cf67c4944973afbe9fd16a352927_padmini.JPG",
"format": "topic",
"changed": "2015-08-13 06:40:28"
}
},
{
"id": 280683,
"oid": 271235,
"category": "article",
"data": {
"subject": "天津爆炸事故新闻发布会汇总",
"summary": "今天下午4点30分，在滨海新区美华大酒店召开仓库爆炸事故新闻发布会。",
"cover": "/Attachs/Article/271235/147eeab6e9d74494a212a7f29ac9225f_padmini.JPG",
"pic": "",
"format": "txt",
"changed": "2015-08-13 18:15:39"
}
},
{
"id": 280237,
"oid": 270764,
"category": "article",
"data": {
"subject": "对天津滨海爆炸作指示",
"summary": "对天津滨海新区危险品仓库爆炸作出重要指示，要求全力救治伤员。",
"cover": "/Attachs/Article/270764/cde97c0e7430479baf98cd399316d9ee_padmini.JPG",
"pic": "",
"format": "txt",
"changed": "2015-08-13 07:18:50"
}
}
],
"PageIndex": 1,
"PageSize": 3,
"TotalCount": 50659,
"TotalPage": 16887
}
}
解析代码：
package
json;
import
java.util.List;
public
class
Paramz
{
private List<Feeds> list;
privateint pageIndex;
privateint pageSize;
privateint totalCount;
privateint totalPage;
public Paramz()
{
super();
}
public Paramz(List<Feeds> list, int pageIndex, int pageSize,
int totalCount, int totalPage)
{
super();
this.list = list;
this.pageIndex = pageIndex;
this.pageSize = pageSize;
this.totalCount = totalCount;
this.totalPage = totalPage;
}
public List<Feeds> getList()
{
return list;
}
publicvoid setList(List<Feeds> list)
{
this.list = list;
}
publicint getPageIndex()
{
return pageIndex;
}
publicvoid setPageIndex(int pageIndex)
{
this.pageIndex = pageIndex;
}
publicint getPageSize()
{
return pageSize;
}
publicvoid setPageSize(int pageSize)
{
this.pageSize = pageSize;
}
publicint getTotalCount()
{
return totalCount;
}
publicvoid setTotalCount(int totalCount)
{
this.totalCount = totalCount;
}
publicint getTotalPage()
{
return totalPage;
}
publicvoid setTotalPage(int totalPage)
{
this.totalPage = totalPage;
}
@Override
public String toString()
{
return "今日新闻：\r\n"
+ getListString()
+ "\r\n"
+ "-----------------------------------------------------------------------\r\n"
+ "页码:" + pageIndex + " 新闻条数:" + pageSize + " 总条数:"
+ totalCount
+ " 总页数:" + totalPage + " ";
}
public String getListString()
{
String str = "";
for (Feeds f : list)
{
str += f;
}
return str;
}
}
package
json;
public
class
Feeds
{
private
int
id;
private
int
oid;
private
String category;
private
Data data;
public
Feeds()
{
super
();
}
public Feeds(int id, int oid, String category, Data data)
{
super();
this.id = id;
this.oid = oid;
this.category = category;
this.data = data;
}
publicint getId()
{
return id;
}
publicvoid setId(int id)
{
this.id = id;
}
publicint getOid()
{
return oid;
}
publicvoid setOid(int oid)
{
this.oid = oid;
}
public String getCategory()
{
return category;
}
publicvoid setCategory(String category)
{
this.category = category;
}
public Data getData()
{
return data;
}
publicvoid setData(Data data)
{
this.data = data;
}
@Override
public String toString()
{
return "-----------------------------------------------------------------------\r\n"
+ "id:"
+ id
+ "\r\n"
+ "oid:"
+ oid
+ "\r\n"
+ "category:"
+ category + "\r\n" + data + "\r\n";
}
}
package
json;
public
class
Data
{
private
String subject;
private
String summary;
private
String cover;
private
String format;
private
String changed;
public
Data()
{
super
();
}
public
Data(String subject, String summary, String cover, String format,
String changed)
{
super
();
this.subject = subject;
this.summary = summary;
this.cover = cover;
this.format = format;
this.changed = changed;
}
public String getSubject()
{
return subject;
}
publicvoid setSubject(String subject)
{
this.subject = subject;
}
public String getSummary()
{
return summary;
}
publicvoid setSummary(String summary)
{
this.summary = summary;
}
public String getCover()
{
return cover;
}
publicvoid setCover(String cover)
{
this.cover = cover;
}
public String getFormat()
{
return format;
}
publicvoid setFormat(String format)
{
this.format = format;
}
public String getChanged()
{
return changed;
}
publicvoid setChanged(String changed)
{
this.changed = changed;
}
@Override
public String toString()
{
return " 标题:" + subject + "\r\n" + " 摘要:" + summary + "\r\n"
+ " cover:" + cover + "\r\n" + " format:" + format
+ "\r\n" + " 发布时间:" + changed + "\r\n";
}
}
package
json;
import
java.io.ByteArrayOutputStream;
import
java.io.IOException;
import
java.io.InputStream;
import
java.net.HttpURLConnection;
import
java.net.URL;
import
java.util.ArrayList;
import
java.util.List;
import
org.json.JSONArray;
import
org.json.JSONException;
import
org.json.JSONObject;
public
class
HttpUtils
{
public
static String getJsonStr(String path) throws IOException
{
String jsonStr = null;
URL url = new URL(path);
HttpURLConnection con = (HttpURLConnection) url.openConnection();
con.setRequestMethod("GET");
con.setConnectTimeout(5000);
con.setDoInput(true);
InputStream in = null;
if (con.getResponseCode() == 200)
{
in = con.getInputStream();
jsonStr = getResult(in);
}
return jsonStr;
}
privatestatic String getResult(InputStream in) throws IOException
{
ByteArrayOutputStream bos = new ByteArrayOutputStream();
int len = 0;
byte[] arr = newbyte[1024];
while ((len = in.read(arr)) != -1)
{
bos.write(arr,0,len);
}
String str = new String(bos.toByteArray(),"utf-8");
return str;
}
publicstatic Paramz getParamz(String path) throws IOException, JSONException
{
Paramz paramz = new Paramz();
String json = getJsonStr(path);
JSONObject objJson = new JSONObject(json);
JSONObject paramzObj = objJson.getJSONObject("paramz");
paramz.setPageIndex(paramzObj.getInt("PageIndex"));
paramz.setPageSize(paramzObj.getInt("PageSize"));
paramz.setTotalCount(paramzObj.getInt("TotalCount"));
paramz.setTotalPage(paramzObj.getInt("TotalPage"));
JSONArray array = paramzObj.getJSONArray("feeds");
List<Feeds> list = new ArrayList<Feeds>();
for(int i = 0;i<array.length();i++)
{
JSONObject obj = array.getJSONObject(i);
Feeds feed = new Feeds();
feed.setId(obj.getInt("id"));
feed.setOid(obj.getInt("oid"));
feed.setCategory(obj.getString("category"));
JSONObject dataObj = obj.getJSONObject("data");
Data data = new Data();
data.setSubject(dataObj.getString("subject"));
data.setSummary(dataObj.getString("summary"));
data.setCover(dataObj.getString("cover"));
data.setFormat(dataObj.getString("format"));
data.setChanged(dataObj.getString("changed"));
feed.setData(data);
list.add(feed);
}
paramz.setList(list);
return paramz;
}
}
package
json;
import
java.io.IOException;
import
org.json.JSONException;
public
class
Test
{
public
static
void main(String[] args) throws IOException, JSONException
{
String path = "http://litchiapi.jstv.com/api/GetFeeds?column=0&PageSize=100&pageIndex=1&val=100511D3BE5301280E0992C73A9DEC41";
Paramz paramz = HttpUtils.getParamz(path);
System.out.println(paramz);
}
}
原文：http://www.cnblogs.com/lipeng0824/p/4728257.html
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