1.搭建Apache服务器
- 搜索Apache http srever
- 一路next 成功标志
- 在Apache/htdocs下新建html文件
xml数据格式1
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17<apps>
<app>
<id>1<id>
<name>Google Maps</name>
<version>1.0</version>
</app>
<app>
<id>2<id>
<name>Chorme</name>
<version>2.1</version>
</app>
<app>
<id>3<id>
<name>Google Play</name>
<version>2.3</version>
</app>
</apps>
2.Pull解析方式（解析XML格式数据）（例子结果在log呈现）
MainActivity1
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64private void sendRequestWithOkHttp() {
new Thread(new Runnable() {
public void run() {
try {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
// 指定访问的服务器地址是电脑本机
.url("http://10.0.2.2/get_data.xml")//get_data.xml我们在Apache/htdocs下新建的文件 10.0.2.2对模拟器来说是本机地址
.build();
Response response = client.newCall(request).execute();
String responseData = response.body().string();
parseXMLWithPull(responseData);
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
private void parseXMLWithPull(String xmlData) {
try {
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser xmlPullParser = factory.newPullParser();
xmlPullParser.setInput(new StringReader(xmlData));
int eventType = xmlPullParser.getEventType();
String id = "";
String name = "";
String version = "";
while (eventType != XmlPullParser.END_DOCUMENT) {
String nodeName = xmlPullParser.getName();
switch (eventType) {
// 开始解析某个结点
case XmlPullParser.START_TAG: {
if ("id".equals(nodeName)) {
id = xmlPullParser.nextText();
} else if ("name".equals(nodeName)) {
name = xmlPullParser.nextText();
} else if ("version".equals(nodeName)) {
version = xmlPullParser.nextText();
}
break;
}
// 完成解析某个结点
case XmlPullParser.END_TAG: {
if ("app".equals(nodeName)) {
Log.d("MainActivity", "id is " + id);
Log.d("MainActivity", "name is " + name);
Log.d("MainActivity", "version is " + version);
}
break;
}
default:
break;
}
eventType = xmlPullParser.next();
}
} catch (Exception e) {
e.printStackTrace();
}
}
3.SAX解析方式(解析XML格式数据)（实现解析功能同上）
新建类继承DefaultHandler 重写5个方法1
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54public class ContentHandler extends DefaultHandler {
private String nodeName;
private StringBuilder id;
private StringBuilder name;
private StringBuilder version;
public void startDocument() throws SAXException {
id = new StringBuilder();
name = new StringBuilder();
version = new StringBuilder();
}
public void startElement(String uri, String localName, String qName, Attributes attributes) throws SAXException {
// 记录当前结点名
nodeName = localName;
}
public void characters(char[] ch, int start, int length) throws SAXException {
// 根据当前的结点名判断将内容添加到哪一个StringBuilder对象中
if ("id".equals(nodeName)) {
id.append(ch, start, length);
} else if ("name".equals(nodeName)) {
name.append(ch, start, length);
} else if ("version".equals(nodeName)) {
version.append(ch, start, length);
}
}
public void endElement(String uri, String localName, String qName) throws SAXException {
if ("app".equals(localName)) {
Log.d("ContentHandler", "id is " + id.toString().trim());
Log.d("ContentHandler", "name is " + name.toString().trim());
Log.d("ContentHandler", "version is " + version.toString().trim());
// 最后要将StringBuilder清空掉
id.setLength(0);
name.setLength(0);
version.setLength(0);
}
}
public void endDocument() throws SAXException {
super.endDocument();
}
}
MainActivity1
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38private void sendRequestWithOkHttp() {
new Thread(new Runnable() {
public void run() {
try {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
// 指定访问的服务器地址是电脑本机
.url("http://10.0.2.2/get_data.xml")//get_data.xml我们在Apache/htdocs下新建的文件 10.0.2.2对模拟器来说是本机地址
.build();
Response response = client.newCall(request).execute();
String responseData = response.body().string();
parseXMLWithSAX(responseData);
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
private void parseXMLWithSAX(String xmlData) {
try {
SAXParserFactory factory = SAXParserFactory.newInstance();
XMLReader xmlReader = factory.newSAXParser().getXMLReader();
ContentHandler handler = new ContentHandler();
// 将ContentHandler的实例设置到XMLReader中
xmlReader.setContentHandler(handler);
// 开始执行解析
xmlReader.parse(new InputSource(new StringReader(xmlData)));
} catch (Exception e) {
e.printStackTrace();
}
}
4.解析JSON数据格式
json数据格式1
{“name”:"Tome","age":20}
用JSONObject解析1
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41private void sendRequestWithOkHttp() {
new Thread(new Runnable() {
public void run() {
try {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
// 指定访问的服务器地址是电脑本机
.url("http://10.0.2.2/get_data.json")//get_data.xml我们在Apache/htdocs下新建的文件 10.0.2.2对模拟器来说是本机地址
.build();
Response response = client.newCall(request).execute();
String responseData = response.body().string();
parseJSONWithJSONObject(responseData);
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
private void parseJSONWithJSONObject(String jsonData) {
try {
JSONArray jsonArray = new JSONArray(jsonData);
for (int i = 0; i < jsonArray.length(); i++) {
JSONObject jsonObject = jsonArray.getJSONObject(i);
String id = jsonObject.getString("id");
String name = jsonObject.getString("name");
String version = jsonObject.getString("version");
Log.d("MainActivity", "id is " + id);
Log.d("MainActivity", "name is " + name);
Log.d("MainActivity", "version is " + version);
}
} catch (Exception e) {
e.printStackTrace();
}
}
5.使用GSON解析JSON
添加依赖1
compile 'com.google.code.gson:gson:2.7'
新建App类1
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33public class App {
private String id;
private String name;
private String version;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getVersion() {
return version;
}
public void setVersion(String version) {
this.version = version;
}
}
MainActivity
private void sendRequestWithOkHttp() {
new Thread(new Runnable() {
public void run() {
try {
OkHttpClient client = new OkHttpClient();
Request request = new Request.Builder()
// 指定访问的服务器地址是电脑本机
.url("http://10.0.2.2/get_data.json")
.build();
Response response = client.newCall(request).execute();
String responseData = response.body().string();
parseJSONWithGSON(responseData);
} catch (Exception e) {
e.printStackTrace();
}
}
}).start();
}
private void parseJSONWithGSON(String jsonData) {
Gson gson = new Gson();
List<App> appList = gson.fromJson(jsonData, new TypeToken<List<App>>() {}.getType());
for (App app : appList) {
Log.d("MainActivity", "id is " + app.getId());
Log.d("MainActivity", "name is " + app.getName());
Log.d("MainActivity", "version is " + app.getVersion());
}
}