android JSON与XmlPullParse解析网络连接数据

JSONVs XML

1.JSON和XML的数据可读性基本相同

2.JSON和XML同样拥有丰富的解析手段

3.JSON相对于XML来讲，数据的体积小

4.JSON与JavaScript的交互更加方便

5.JSON对数据的描述性比XML较差

6.JSON的速度要远远快于XML

AndroidJSON解析

privateStringweatherUrl="http://www.weather.com.cn/adat/cityinfo/101040500.html";

privatestaticString[]jsonStrings={"weatherinfo","city","cityid","temp1","temp2","weather","img1","img2","ptime"};

publicstaticvoidgetJsonObject(String restString, finalString[] jsonStrings, intnum) {

String[]restjson = newString[jsonStrings.length];

JSONObjectjsonObject = null;

intjsonDataLen = 1;

try{

for(inti = 0; i<num; i++){

jsonObject=newJSONObject(restString);//获取JSONObject对象

if(i== num-1)

continue;

restString= jsonObject.getString(jsonStrings[i]);//获取JSON解析的字符串数据

}

for(inti=num-1; i<jsonStrings.length;i++){

restString= jsonObject.getString(jsonStrings[i]);

restjson[jsonDataLen]= restString;

Log.d("look",jsonStrings[i]+"="+restjson[jsonDataLen]);

if(i== jsonStrings.length-1)

continue;

jsonDataLen++;

}

Log.d("look","jsonDataLen="+jsonDataLen);

}catch(JSONException e) {

e.printStackTrace();

}

Log.d(TGA,"ly++++++getJsonObject");

}

AndroidXML解析

privateStringweatherUrl="http://api.k780.com:88/?app=weather.today&weaid=101280601&appkey=10003&sign=b59bc3ef6191eb9f747dd4e83c99f2a4&format=xml";

publicstaticvoidgetXmlPullParser(InputStream inputStream) {

//由android.util.Xml创建一个XmlPullParser实例

XmlPullParserxmlPullParser = Xml.newPullParser();

try{

//设置输入流并指明编码方式

xmlPullParser.setInput(inputStream,"UTF-8");

//产生第一个事件

inteventType = xmlPullParser.getEventType();

while(eventType!=XmlPullParser.END_DOCUMENT){

switch(eventType){

//判断当前事件是否为文档开始事件

caseXmlPullParser.START_DOCUMENT:

//可在这里进行一些初始化的事情

break;

//判断当前事件是否为标签元素开始事件

caseXmlPullParser.START_TAG:

//判断开始标签元素

if(xmlPullParser.getName().equals("result")){

}elseif(xmlPullParser.getName().equals("weaid")){

//标记指针向下移动一位后再得到weaid标签的属性值，记住每获得一次数据都得移动一次标记，

//当一个标记中有多个数据时用getAttributeValue(index)方法得到多个数据。

eventType = xmlPullParser.next();

String weaidString = xmlPullParser.getText();

Log.d("look","weaid"+weaidString);

}elseif(xmlPullParser.getName().equals("days")){

eventType = xmlPullParser.next();

String daysString = xmlPullParser.getText();

Log.d("look","days"+daysString);

}elseif(xmlPullParser.getName().equals("temperature")){

eventType = xmlPullParser.next();

String temperatureString = xmlPullParser.getText();

Log.d("look","temperature"+temperatureString);

}elseif(xmlPullParser.getName().equals("weather")){

eventType = xmlPullParser.next();

String weatherString = xmlPullParser.getText();

Log.d("look","weather"+weatherString);

}

break;

//判断当前事件是否为标签元素结束事件

caseXmlPullParser.END_TAG:

break;

}

//进入下一个元素并触发相应事件

eventType= xmlPullParser.next();

}

}catch(XmlPullParserException e) {

e.printStackTrace();

}catch(IOException e) {

e.printStackTrace();

}

Log.d(TGA,"ly++++++getXmlPullParser");

}