android解析JSON字符串

json数据格式解析我自己分为两种；

一种是普通的，一种是带有数组形式的；

普通形式的：
服务器端返回的json数据格式如下：

{ " userbean " :{ " Uid " : " 100196 " , " Showname " : " \u75af\u72c2\u7684\u7334\u5b50 " , " Avtar " : null , " State " : 1 }}

分析代码如下：

// TODO状态处理500200
int res = 0 ;
res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
if (res == 200 ){
/*
*当返回码为200时，做处理
*得到服务器端返回json数据，并做处理
* */
HttpResponsehttpResponse = httpClient.execute(httpPost);
StringBuilderbuilder = new StringBuilder();
BufferedReaderbufferedReader2 = new BufferedReader(
new InputStreamReader(httpResponse.getEntity().getContent()));
Stringstr2 = "" ;
for (Strings = bufferedReader2.readLine();s != null ;s = bufferedReader2
.readLine()){
builder.append(s);
}
Log.i( " cat " , " >>>>>> " + builder.toString());

JSONObjectjsonObject = new JSONObject(builder.toString())
.getJSONObject( " userbean " );

StringUid;
StringShowname;
StringAvtar;
StringState;

Uid = jsonObject.getString( " Uid " );
Showname = jsonObject.getString( " Showname " );
Avtar = jsonObject.getString( " Avtar " );
State = jsonObject.getString( " State " );
带数组形式的：
服务器端返回的数据格式为：

{ " calendar " :
{ " calendarlist " :
[
{ " calendar_id " : " 1705 " , " title " : " (\u4eb2\u5b50)ddssd " , " category_name " : " \u9ed8\u8ba4\u5206\u7c7b " , " showtime " : " 1288927800 " , " endshowtime " : " 1288931400 " , " allDay " : false },
{ " calendar_id " : " 1706 " , " title " : " (\u65c5\u884c) " , " category_name " : " \u9ed8\u8ba4\u5206\u7c7b " , " showtime " : " 1288933200 " , " endshowtime " : " 1288936800 " , " allDay " : false }
]
}
}

分析代码如下：

// TODO状态处理500200
int res = 0 ;
res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
if (res == 200 ){
/*
*当返回码为200时，做处理
*得到服务器端返回json数据，并做处理
* */
HttpResponsehttpResponse = httpClient.execute(httpPost);
StringBuilderbuilder = new StringBuilder();
BufferedReaderbufferedReader2 = new BufferedReader(
new InputStreamReader(httpResponse.getEntity().getContent()));
Stringstr2 = "" ;
for (Strings = bufferedReader2.readLine();s != null ;s = bufferedReader2
.readLine()){
builder.append(s);
}
Log.i( " cat " , " >>>>>> " + builder.toString());
/**
*这里需要分析服务器回传的json格式数据，
*/
JSONObjectjsonObject = new JSONObject(builder.toString())
.getJSONObject( " calendar " );
JSONArrayjsonArray = jsonObject.getJSONArray( " calendarlist " );
for ( int i = 0 ;i < jsonArray.length();i ++ ){
JSONObjectjsonObject2 = (JSONObject)jsonArray.opt(i);
CalendarInfocalendarInfo = new CalendarInfo();
calendarInfo.setCalendar_id(jsonObject2.getString( " calendar_id " ));
calendarInfo.setTitle(jsonObject2.getString( " title " ));
calendarInfo.setCategory_name(jsonObject2.getString( " category_name " ));
calendarInfo.setShowtime(jsonObject2.getString( " showtime " ));
calendarInfo.setEndtime(jsonObject2.getString( " endshowtime " ));
calendarInfo.setAllDay(jsonObject2.getBoolean( " allDay " ));
calendarInfos.add(calendarInfo);
}

总结，普通形式的只需用JSONObject，带数组形式的需要使用JSONArray将其变成一个list。

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