如何从 xml in android 的相同键名中获取值
how to get values from same keyname from xml in android
我做了一个演示来解析 android 中的 xml 响应，我试过了并且一切顺利，但我不知道如何从 [= 中获取具有相同键名的相同参数的值24=] 回复，我的样本 xml 如下，
<NightlyRatesPerRoom size="8">
<NightlyRate baseRate="315.68" rate="315.68" promo="false"/>
<NightlyRate baseRate="229.33" rate="229.33" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
</NightlyRatesPerRoom>
我的代码
package com.amar.travelonwards.parser;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;
import com.amar.travelonwards.model.RssFeed_RoomInfo;
import com.amar.travelonwards.utility.Consts;
import com.amar.travelonwards.utility.HotelBookingDetailsHandler;
public class NewsFeedParser_RoomInfo {
private InputStream urlStream;
private XmlPullParserFactory factory;
private XmlPullParser parser;
private List<RssFeed_RoomInfo> rssFeedList_Room;
private RssFeed_RoomInfo rssFeed_room;
public List<String> room_info;
public List<String> bed_info;
public List<String> commissionList;
public List<String> surchargeList;
public List<String> totalChargeList;
public List<String> cancellation;
public List<String> urlList;
ArrayList<String> al;
private String urlString;
private String tagName;
private String roomTypeDescription;
private String bedTypeDesc;
private String commissionableUsdTotal;
private String surchargeTotal;
private String total;
private String averageRate;
private String cancellationPolicy;
private String url;
private String rateCode;
private String roomTypeCode;
private String supplierType;
private String bedType;
private String smokePref;
private String rateKey;
public List<String> values;
public List<String> list_rateCode;
public List<String> list_roomTypeCode;
public List<String> list_supplierType;
public List<String> list_bedType;
public List<String> list_smokePref;
public List<String> list_rateKey;
public List<String> total_addValue_list;
/*
* String temp[]; int i;
*/
public List<List<String>> addValueList;
int i = 0;
public static final String ITEM = "HotelRoomResponse";
public static final String CHANNEL = "ns2:HotelRoomAvailabilityResponse";
public static final String HOTEL_NAME = "roomTypeDescription";
public static final String ROOM_DESC = "BedType";
public static final String ROOM_CHARGE = "ChargeableRateInfo";
public static final String CANCELLATION = "cancellationPolicy";
public static final String URL = "url";
public static final String HOTEL_ID = "hotelId";
public static final String ARRIVAL_DATE = "arrivalDate";
public static final String DEPARTURE_DATE = "departureDate";
public static final String RATE_CODE = "rateCode";
public static final String ROOM_TYPE_CODE = "roomTypeCode";
public static final String SUPPLIER_TYPE = "supplierType";
public static final String BED_TYPE = "BedType";
public static final String SMOKE_PREF = "smokingPreferences";
public static final String RATE_KEY = "rateKey";
public static final String VALUE_ADDS = "ValueAdds";
public static final String VALUE_ADD = "ValueAdd";
public HotelBookingDetailsHandler bookingDetailsHandler;
public NewsFeedParser_RoomInfo(String urlString) {
this.urlString = urlString;
}
public NewsFeedParser_RoomInfo() {
// TODO Auto-generated constructor stub
}
public static InputStream downloadUrl(String urlString) throws IOException {
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setDoInput(true);
// conn.setDoOutput(true);
conn.setRequestProperty("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-us,en;q=0.5");
conn.setRequestProperty("Accept-Charset",
"ISO-8859-1,utf-8;q=0.7,*;q=0.7");
conn.connect();
int rCode = conn.getResponseCode();
System.out.println("************Responce Code:************" + rCode);
InputStream stream = conn.getInputStream();
if (conn.getResponseCode() != 200) {
stream = conn.getErrorStream();
System.out.println("**********************OK**************");
} else {
stream = conn.getInputStream();
}
return stream;
}
public List<RssFeed_RoomInfo> parse() {
try {
int count = 0;
factory = XmlPullParserFactory.newInstance();
parser = factory.newPullParser();
urlStream = downloadUrl(urlString);
parser.setInput(urlStream, null);
int eventType = parser.getEventType();
boolean done = false;
rssFeed_room = new RssFeed_RoomInfo();
room_info = new ArrayList<String>();
bed_info = new ArrayList<String>();
commissionList = new ArrayList<String>();
surchargeList = new ArrayList<String>();
totalChargeList = new ArrayList<String>();
cancellation = new ArrayList<String>();
urlList = new ArrayList<String>();
addValueList = new ArrayList<List<String>>();
total_addValue_list = new ArrayList<String>();
list_rateCode = new ArrayList<String>();
list_roomTypeCode = new ArrayList<String>();
list_supplierType = new ArrayList<String>();
list_bedType = new ArrayList<String>();
list_smokePref = new ArrayList<String>();
list_rateKey = new ArrayList<String>();
rssFeedList_Room = new ArrayList<RssFeed_RoomInfo>();
while (eventType != XmlPullParser.END_DOCUMENT && !done) {
tagName = parser.getName();
// System.out.println("City Tag:"+tagName);
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
break;
case XmlPullParser.START_TAG:
if (tagName.equals(ITEM)) {
rssFeed_room = new RssFeed_RoomInfo();
values = new ArrayList<String>();
}
if (tagName.equals(RATE_CODE)) {
rateCode = parser.nextText().toString();
System.out.println("PArsed rateCode:" + rateCode);
list_rateCode.add(rateCode);
}
if (tagName.equals(ROOM_TYPE_CODE)) {
roomTypeCode = parser.nextText().toString();
System.out.println("PArsed roomtypecode:"
+ roomTypeCode);
list_roomTypeCode.add(roomTypeCode);
}
if (tagName.equals(SUPPLIER_TYPE)) {
supplierType = parser.nextText().toString();
System.out.println("PArsed supplierType:"
+ supplierType);
list_supplierType.add(supplierType);
}
if (tagName.equals(BED_TYPE)) {
bedType = parser.getAttributeValue(null, "id");
System.out.println("PArsed bedType:" + bedType);
list_bedType.add(bedType);
}
if (tagName.equals(SMOKE_PREF)) {
smokePref = parser.nextText().toString();
System.out.println("PArsed smokePref:" + smokePref);
list_smokePref.add(smokePref);
}
if (tagName.equals(RATE_KEY)) {
rateKey = parser.nextText().toString();
System.out.println("PArsed rateKey:" + rateKey);
list_rateKey.add(rateKey);
}
//
if (tagName.equals(HOTEL_NAME)) {
roomTypeDescription = parser.nextText().toString();
System.out.println("PArsed roomTypeDescription:"
+ roomTypeDescription);
room_info.add(roomTypeDescription);
}
if (tagName.equals(ROOM_DESC)) {
parser.nextTag();
parser.require(XmlPullParser.START_TAG, "",
"description");
bedTypeDesc = parser.nextText();
parser.require(XmlPullParser.END_TAG, "", "description");
bed_info.add(bedTypeDesc);
System.out.println("PArsed bedTypeDesc:" + bedTypeDesc);
}
if (tagName.equals(ROOM_CHARGE)) {
commissionableUsdTotal = parser.getAttributeValue(null,
"commissionableUsdTotal");
commissionList.add(commissionableUsdTotal);
System.out
.println("Parse commission commissionableUsdTotal:"
+ commissionableUsdTotal);
surchargeTotal = parser.getAttributeValue(null,
"surchargeTotal");
surchargeList.add(surchargeTotal);
System.out.println("Parse surcharged surchargeTotal:"
+ surchargeTotal);
total = parser.getAttributeValue(null, "total");
totalChargeList.add(total);
System.out.println("Parsed total:" + total);
averageRate = parser.getAttributeValue(null,
"averageRate");
System.out.println("Print avgNight:" + averageRate);
System.out.println("PArsed commissionableUsdTotal:"
+ commissionableUsdTotal);
}
if (tagName.equalsIgnoreCase("NightlyRatesPerRoom")) {
System.out.println("<NightlyRatesPerRoom>");
al = new ArrayList<String>(); // if its root tag, arraylist begins here
}
if (tagName.equalsIgnoreCase("NightlyRate")) {
System.out.print("<NightlyRate>");
String rateValue = parser.getAttributeValue(null, "rate");
System.out.print("Rate is : " + rateValue);
al.add(rateValue); // adds the value i.e rate to al
}
if (tagName.equals(CANCELLATION)) {
cancellationPolicy = parser.nextText().toString();
System.out.println("PArsed cancellationPolicy:"
+ cancellationPolicy);
cancellation.add(cancellationPolicy);
}
if (tagName.equals(VALUE_ADD)) {
parser.nextTag();
parser.require(XmlPullParser.START_TAG, "",
"description");
values.add(parser.nextText());
parser.require(XmlPullParser.END_TAG, "", "description");
}
if (tagName.equals(URL)) {
url = parser.nextText().toString();
System.out.println("PArsed url:" + url);
urlList.add(url);
}
break;
case XmlPullParser.END_TAG:
if (tagName.equals(CHANNEL)) {
done = true;
} else if (tagName.equals(ITEM)) {
rssFeed_room = new RssFeed_RoomInfo(
roomTypeDescription, bedTypeDesc,
commissionableUsdTotal, surchargeTotal, total,
averageRate, cancellationPolicy, url, rateCode,
roomTypeCode, supplierType, bedType, smokePref,
rateKey);
Consts.roomSelectionList.clear();
HashMap<String, String> roomMap = new HashMap<>();
roomMap.put("roomTypeDescription", roomTypeDescription);
roomMap.put("bedTypeDesc", bedTypeDesc);
roomMap.put("commissionableUsdTotal",
commissionableUsdTotal);
roomMap.put("surchargeTotal", surchargeTotal);
roomMap.put("total", total);
roomMap.put("averageRate", averageRate);
roomMap.put("cancellationPolicy", cancellationPolicy);
roomMap.put("url", url);
roomMap.put("rateCode", rateCode);
roomMap.put("roomTypeCode", roomTypeCode);
roomMap.put("supplierType", supplierType);
roomMap.put("bedType", bedType);
roomMap.put("smokePref", smokePref);
roomMap.put("rateKey", rateKey);
Consts.roomSelectionList.add(roomMap);
rssFeedList_Room.add(rssFeed_room);
addValueList.add(values);
System.out.println("AddValues:::" + addValueList);
}
break;
}
eventType = parser.next();
}
} catch (Exception e) {
e.printStackTrace();
}
return rssFeedList_Room;
}
}
我想获取 arrayList 中 "rate" 的所有值，谁能帮我解决这个问题，在此先感谢。
很简单。对于 xml 解析，我使用了 xmlpullparser。你可以试试这个代码。
演示 class
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
public class Demo {
public static void main(String[] args) throws XmlPullParserException, IOException
{
try {
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
ArrayList<String> al = null; // ArrayList initialized here
XmlPullParser xpp = factory.newPullParser();
File xmlFile = new File("test.xml");
FileInputStream fis = new FileInputStream(xmlFile);
xpp.setInput(fis, null);
xpp.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
int eventType=xpp.getEventType();
while(eventType!=XmlPullParser.END_DOCUMENT){
String tagname = xpp.getName();
switch (eventType) {
case XmlPullParser.START_TAG:
if (tagname.equalsIgnoreCase("NightlyRatesPerRoom")) {
System.out.println("<NightlyRatesPerRoom>");
al = new ArrayList<String>(); // if its root tag, arraylist begins here
}
if (tagname.equalsIgnoreCase("NightlyRate")) {
System.out.print("<NightlyRate>");
String rateValue = xpp.getAttributeValue(null, "rate");
System.out.print("Rate is : " + rateValue);
al.add(rateValue); // adds the value i.e rate to al
}
break;
case XmlPullParser.END_TAG:
if (tagname.equalsIgnoreCase("NightlyRatesPerRoom")) {
System.out.println("</NightlyRatesPerRoom>");
}
if (tagname.equalsIgnoreCase("NightlyRate")) {
System.out.println("</NightlyRate>");
}
default:
break;
}
eventType=xpp.next();
}
System.out.println("**** ArrayList Values Starts printing ****");
for (int i = 0; i < al.size(); i++) {
System.out.println("Rate : " +al.get(i));
} // end of for loop
} // end of try
catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} // end of main function
} // end of class
输出：
<NightlyRatesPerRoom>
<NightlyRate>Rate is : 315.68</NightlyRate>
<NightlyRate>Rate is : 229.33</NightlyRate>
<NightlyRate>Rate is : 248.52</NightlyRate>
<NightlyRate>Rate is : 267.71</NightlyRate>
<NightlyRate>Rate is : 267.71</NightlyRate>
<NightlyRate>Rate is : 248.52</NightlyRate>
<NightlyRate>Rate is : 286.9</NightlyRate>
<NightlyRate>Rate is : 286.9</NightlyRate>
</NightlyRatesPerRoom>
**** ArrayList Values Starts printing ****
Rate : 315.68
Rate : 229.33
Rate : 248.52
Rate : 267.71
Rate : 267.71
Rate : 248.52
Rate : 286.9
Rate : 286.9
test.xml
<?xml version="1.0" encoding="UTF-8"?>
<NightlyRatesPerRoom size="8">
<NightlyRate baseRate="315.68" rate="315.68" promo="false"/>
<NightlyRate baseRate="229.33" rate="229.33" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
</NightlyRatesPerRoom>
注意：要使用xmlpullparser，您需要download this library并将其添加到您的项目中。
要在 android 中工作，您只需复制并粘贴 Try 中的工作代码，然后将其粘贴到您的 class 中。希望对您有所帮助！
是的，我的 way.here 得到了答案，它是：
if (tagName.equals(NightlyRate)) {
night_rate = parser.getAttributeValue(null, "rate");
rates.add(night_rate);
System.out.println("MY_NIGHT_RATE " + rates.toString());
}
我做了一个演示来解析 android 中的 xml 响应，我试过了并且一切顺利，但我不知道如何从 [= 中获取具有相同键名的相同参数的值24=] 回复，我的样本 xml 如下，
<NightlyRatesPerRoom size="8">
<NightlyRate baseRate="315.68" rate="315.68" promo="false"/>
<NightlyRate baseRate="229.33" rate="229.33" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
</NightlyRatesPerRoom>
我的代码
package com.amar.travelonwards.parser;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;
import com.amar.travelonwards.model.RssFeed_RoomInfo;
import com.amar.travelonwards.utility.Consts;
import com.amar.travelonwards.utility.HotelBookingDetailsHandler;
public class NewsFeedParser_RoomInfo {
private InputStream urlStream;
private XmlPullParserFactory factory;
private XmlPullParser parser;
private List<RssFeed_RoomInfo> rssFeedList_Room;
private RssFeed_RoomInfo rssFeed_room;
public List<String> room_info;
public List<String> bed_info;
public List<String> commissionList;
public List<String> surchargeList;
public List<String> totalChargeList;
public List<String> cancellation;
public List<String> urlList;
ArrayList<String> al;
private String urlString;
private String tagName;
private String roomTypeDescription;
private String bedTypeDesc;
private String commissionableUsdTotal;
private String surchargeTotal;
private String total;
private String averageRate;
private String cancellationPolicy;
private String url;
private String rateCode;
private String roomTypeCode;
private String supplierType;
private String bedType;
private String smokePref;
private String rateKey;
public List<String> values;
public List<String> list_rateCode;
public List<String> list_roomTypeCode;
public List<String> list_supplierType;
public List<String> list_bedType;
public List<String> list_smokePref;
public List<String> list_rateKey;
public List<String> total_addValue_list;
/*
* String temp[]; int i;
*/
public List<List<String>> addValueList;
int i = 0;
public static final String ITEM = "HotelRoomResponse";
public static final String CHANNEL = "ns2:HotelRoomAvailabilityResponse";
public static final String HOTEL_NAME = "roomTypeDescription";
public static final String ROOM_DESC = "BedType";
public static final String ROOM_CHARGE = "ChargeableRateInfo";
public static final String CANCELLATION = "cancellationPolicy";
public static final String URL = "url";
public static final String HOTEL_ID = "hotelId";
public static final String ARRIVAL_DATE = "arrivalDate";
public static final String DEPARTURE_DATE = "departureDate";
public static final String RATE_CODE = "rateCode";
public static final String ROOM_TYPE_CODE = "roomTypeCode";
public static final String SUPPLIER_TYPE = "supplierType";
public static final String BED_TYPE = "BedType";
public static final String SMOKE_PREF = "smokingPreferences";
public static final String RATE_KEY = "rateKey";
public static final String VALUE_ADDS = "ValueAdds";
public static final String VALUE_ADD = "ValueAdd";
public HotelBookingDetailsHandler bookingDetailsHandler;
public NewsFeedParser_RoomInfo(String urlString) {
this.urlString = urlString;
}
public NewsFeedParser_RoomInfo() {
// TODO Auto-generated constructor stub
}
public static InputStream downloadUrl(String urlString) throws IOException {
URL url = new URL(urlString);
HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("GET");
conn.setDoInput(true);
// conn.setDoOutput(true);
conn.setRequestProperty("Accept",
"text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
conn.setRequestProperty("Accept-Language", "en-us,en;q=0.5");
conn.setRequestProperty("Accept-Charset",
"ISO-8859-1,utf-8;q=0.7,*;q=0.7");
conn.connect();
int rCode = conn.getResponseCode();
System.out.println("************Responce Code:************" + rCode);
InputStream stream = conn.getInputStream();
if (conn.getResponseCode() != 200) {
stream = conn.getErrorStream();
System.out.println("**********************OK**************");
} else {
stream = conn.getInputStream();
}
return stream;
}
public List<RssFeed_RoomInfo> parse() {
try {
int count = 0;
factory = XmlPullParserFactory.newInstance();
parser = factory.newPullParser();
urlStream = downloadUrl(urlString);
parser.setInput(urlStream, null);
int eventType = parser.getEventType();
boolean done = false;
rssFeed_room = new RssFeed_RoomInfo();
room_info = new ArrayList<String>();
bed_info = new ArrayList<String>();
commissionList = new ArrayList<String>();
surchargeList = new ArrayList<String>();
totalChargeList = new ArrayList<String>();
cancellation = new ArrayList<String>();
urlList = new ArrayList<String>();
addValueList = new ArrayList<List<String>>();
total_addValue_list = new ArrayList<String>();
list_rateCode = new ArrayList<String>();
list_roomTypeCode = new ArrayList<String>();
list_supplierType = new ArrayList<String>();
list_bedType = new ArrayList<String>();
list_smokePref = new ArrayList<String>();
list_rateKey = new ArrayList<String>();
rssFeedList_Room = new ArrayList<RssFeed_RoomInfo>();
while (eventType != XmlPullParser.END_DOCUMENT && !done) {
tagName = parser.getName();
// System.out.println("City Tag:"+tagName);
switch (eventType) {
case XmlPullParser.START_DOCUMENT:
break;
case XmlPullParser.START_TAG:
if (tagName.equals(ITEM)) {
rssFeed_room = new RssFeed_RoomInfo();
values = new ArrayList<String>();
}
if (tagName.equals(RATE_CODE)) {
rateCode = parser.nextText().toString();
System.out.println("PArsed rateCode:" + rateCode);
list_rateCode.add(rateCode);
}
if (tagName.equals(ROOM_TYPE_CODE)) {
roomTypeCode = parser.nextText().toString();
System.out.println("PArsed roomtypecode:"
+ roomTypeCode);
list_roomTypeCode.add(roomTypeCode);
}
if (tagName.equals(SUPPLIER_TYPE)) {
supplierType = parser.nextText().toString();
System.out.println("PArsed supplierType:"
+ supplierType);
list_supplierType.add(supplierType);
}
if (tagName.equals(BED_TYPE)) {
bedType = parser.getAttributeValue(null, "id");
System.out.println("PArsed bedType:" + bedType);
list_bedType.add(bedType);
}
if (tagName.equals(SMOKE_PREF)) {
smokePref = parser.nextText().toString();
System.out.println("PArsed smokePref:" + smokePref);
list_smokePref.add(smokePref);
}
if (tagName.equals(RATE_KEY)) {
rateKey = parser.nextText().toString();
System.out.println("PArsed rateKey:" + rateKey);
list_rateKey.add(rateKey);
}
//
if (tagName.equals(HOTEL_NAME)) {
roomTypeDescription = parser.nextText().toString();
System.out.println("PArsed roomTypeDescription:"
+ roomTypeDescription);
room_info.add(roomTypeDescription);
}
if (tagName.equals(ROOM_DESC)) {
parser.nextTag();
parser.require(XmlPullParser.START_TAG, "",
"description");
bedTypeDesc = parser.nextText();
parser.require(XmlPullParser.END_TAG, "", "description");
bed_info.add(bedTypeDesc);
System.out.println("PArsed bedTypeDesc:" + bedTypeDesc);
}
if (tagName.equals(ROOM_CHARGE)) {
commissionableUsdTotal = parser.getAttributeValue(null,
"commissionableUsdTotal");
commissionList.add(commissionableUsdTotal);
System.out
.println("Parse commission commissionableUsdTotal:"
+ commissionableUsdTotal);
surchargeTotal = parser.getAttributeValue(null,
"surchargeTotal");
surchargeList.add(surchargeTotal);
System.out.println("Parse surcharged surchargeTotal:"
+ surchargeTotal);
total = parser.getAttributeValue(null, "total");
totalChargeList.add(total);
System.out.println("Parsed total:" + total);
averageRate = parser.getAttributeValue(null,
"averageRate");
System.out.println("Print avgNight:" + averageRate);
System.out.println("PArsed commissionableUsdTotal:"
+ commissionableUsdTotal);
}
if (tagName.equalsIgnoreCase("NightlyRatesPerRoom")) {
System.out.println("<NightlyRatesPerRoom>");
al = new ArrayList<String>(); // if its root tag, arraylist begins here
}
if (tagName.equalsIgnoreCase("NightlyRate")) {
System.out.print("<NightlyRate>");
String rateValue = parser.getAttributeValue(null, "rate");
System.out.print("Rate is : " + rateValue);
al.add(rateValue); // adds the value i.e rate to al
}
if (tagName.equals(CANCELLATION)) {
cancellationPolicy = parser.nextText().toString();
System.out.println("PArsed cancellationPolicy:"
+ cancellationPolicy);
cancellation.add(cancellationPolicy);
}
if (tagName.equals(VALUE_ADD)) {
parser.nextTag();
parser.require(XmlPullParser.START_TAG, "",
"description");
values.add(parser.nextText());
parser.require(XmlPullParser.END_TAG, "", "description");
}
if (tagName.equals(URL)) {
url = parser.nextText().toString();
System.out.println("PArsed url:" + url);
urlList.add(url);
}
break;
case XmlPullParser.END_TAG:
if (tagName.equals(CHANNEL)) {
done = true;
} else if (tagName.equals(ITEM)) {
rssFeed_room = new RssFeed_RoomInfo(
roomTypeDescription, bedTypeDesc,
commissionableUsdTotal, surchargeTotal, total,
averageRate, cancellationPolicy, url, rateCode,
roomTypeCode, supplierType, bedType, smokePref,
rateKey);
Consts.roomSelectionList.clear();
HashMap<String, String> roomMap = new HashMap<>();
roomMap.put("roomTypeDescription", roomTypeDescription);
roomMap.put("bedTypeDesc", bedTypeDesc);
roomMap.put("commissionableUsdTotal",
commissionableUsdTotal);
roomMap.put("surchargeTotal", surchargeTotal);
roomMap.put("total", total);
roomMap.put("averageRate", averageRate);
roomMap.put("cancellationPolicy", cancellationPolicy);
roomMap.put("url", url);
roomMap.put("rateCode", rateCode);
roomMap.put("roomTypeCode", roomTypeCode);
roomMap.put("supplierType", supplierType);
roomMap.put("bedType", bedType);
roomMap.put("smokePref", smokePref);
roomMap.put("rateKey", rateKey);
Consts.roomSelectionList.add(roomMap);
rssFeedList_Room.add(rssFeed_room);
addValueList.add(values);
System.out.println("AddValues:::" + addValueList);
}
break;
}
eventType = parser.next();
}
} catch (Exception e) {
e.printStackTrace();
}
return rssFeedList_Room;
}
}
我想获取 arrayList 中 "rate" 的所有值，谁能帮我解决这个问题，在此先感谢。
很简单。对于 xml 解析，我使用了 xmlpullparser。你可以试试这个代码。
演示 class
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import org.xmlpull.v1.XmlPullParserFactory;
public class Demo {
public static void main(String[] args) throws XmlPullParserException, IOException
{
try {
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
ArrayList<String> al = null; // ArrayList initialized here
XmlPullParser xpp = factory.newPullParser();
File xmlFile = new File("test.xml");
FileInputStream fis = new FileInputStream(xmlFile);
xpp.setInput(fis, null);
xpp.setFeature(XmlPullParser.FEATURE_PROCESS_NAMESPACES, false);
int eventType=xpp.getEventType();
while(eventType!=XmlPullParser.END_DOCUMENT){
String tagname = xpp.getName();
switch (eventType) {
case XmlPullParser.START_TAG:
if (tagname.equalsIgnoreCase("NightlyRatesPerRoom")) {
System.out.println("<NightlyRatesPerRoom>");
al = new ArrayList<String>(); // if its root tag, arraylist begins here
}
if (tagname.equalsIgnoreCase("NightlyRate")) {
System.out.print("<NightlyRate>");
String rateValue = xpp.getAttributeValue(null, "rate");
System.out.print("Rate is : " + rateValue);
al.add(rateValue); // adds the value i.e rate to al
}
break;
case XmlPullParser.END_TAG:
if (tagname.equalsIgnoreCase("NightlyRatesPerRoom")) {
System.out.println("</NightlyRatesPerRoom>");
}
if (tagname.equalsIgnoreCase("NightlyRate")) {
System.out.println("</NightlyRate>");
}
default:
break;
}
eventType=xpp.next();
}
System.out.println("**** ArrayList Values Starts printing ****");
for (int i = 0; i < al.size(); i++) {
System.out.println("Rate : " +al.get(i));
} // end of for loop
} // end of try
catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
} // end of main function
} // end of class
输出：
<NightlyRatesPerRoom>
<NightlyRate>Rate is : 315.68</NightlyRate>
<NightlyRate>Rate is : 229.33</NightlyRate>
<NightlyRate>Rate is : 248.52</NightlyRate>
<NightlyRate>Rate is : 267.71</NightlyRate>
<NightlyRate>Rate is : 267.71</NightlyRate>
<NightlyRate>Rate is : 248.52</NightlyRate>
<NightlyRate>Rate is : 286.9</NightlyRate>
<NightlyRate>Rate is : 286.9</NightlyRate>
</NightlyRatesPerRoom>
**** ArrayList Values Starts printing ****
Rate : 315.68
Rate : 229.33
Rate : 248.52
Rate : 267.71
Rate : 267.71
Rate : 248.52
Rate : 286.9
Rate : 286.9
test.xml
<?xml version="1.0" encoding="UTF-8"?>
<NightlyRatesPerRoom size="8">
<NightlyRate baseRate="315.68" rate="315.68" promo="false"/>
<NightlyRate baseRate="229.33" rate="229.33" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="267.71" rate="267.71" promo="false"/>
<NightlyRate baseRate="248.52" rate="248.52" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
<NightlyRate baseRate="286.9" rate="286.9" promo="false"/>
</NightlyRatesPerRoom>
注意：要使用xmlpullparser，您需要download this library并将其添加到您的项目中。
要在 android 中工作，您只需复制并粘贴 Try 中的工作代码，然后将其粘贴到您的 class 中。希望对您有所帮助！
是的，我的 way.here 得到了答案，它是：
if (tagName.equals(NightlyRate)) {
night_rate = parser.getAttributeValue(null, "rate");
rates.add(night_rate);
System.out.println("MY_NIGHT_RATE " + rates.toString());
}