Java 解析XML而不是解析整个文件
我有这个XML 以及我的xmlpullparse类:Java 解析XML而不是解析整个文件,java,android,xml,Java,Android,Xml,我有这个XML 以及我的xmlpullparse类: import java.io.InputStream; import java.util.ArrayList; import java.util.List; import org.xmlpull.v1.XmlPullParser; import org.xmlpull.v1.XmlPullParserFactory; public class XMLPullParserHandler { List<MapLT> mapLTL
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;
public class XMLPullParserHandler {
List<MapLT> mapLTList;
private MapLT mapLT;
private String text;
public XMLPullParserHandler() {
mapLTList = new ArrayList<MapLT>();
}
public List<MapLT> getMapLT(){
return mapLTList;
}
public List<MapLT> parse(InputStream is){
XmlPullParserFactory factory = null;
XmlPullParser parser = null;
try{
factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
parser = factory.newPullParser();
parser.setInput(is, null);
int eventType = parser.getEventType();
while(eventType != XmlPullParser.END_DOCUMENT){
String tagname = parser.getName();
switch (eventType){
case XmlPullParser.START_TAG:
if(tagname.equalsIgnoreCase("CurrencyExchangePoint")){
mapLT = new MapLT();
}
break;
case XmlPullParser.TEXT:
text = parser.getText();
break;
case XmlPullParser.END_TAG:
if(tagname.equalsIgnoreCase("CurrencyExchangePoint")){
mapLTList.add(mapLT);
} else if(tagname.equalsIgnoreCase("Address")){
mapLT.setAddress(text);
} else if(tagname.equalsIgnoreCase("Latitude")){
mapLT.setLatitude(Float.parseFloat(text));
} else if(tagname.equalsIgnoreCase("Longitude")){
mapLT.setLongitude(Float.parseFloat(text));
}
break;
default:
break;
}
eventType = parser.next();
}
}catch (Exception ex){
ex.printStackTrace();
}
return mapLTList;
}
import java.io.InputStream;
导入java.util.ArrayList;
导入java.util.List;
导入org.xmlpull.v1.XmlPullParser;
导入org.xmlpull.v1.XmlPullParserFactory;
公共类XMLPullParserHandler{
列表映射列表;
私有MapLT MapLT;
私有字符串文本;
公共XMLPullParserHandler(){
mapLTList=newarraylist();
}
公共列表getMapLT(){
返回mapLTList;
}
公共列表解析(InputStream为){
XmlPullParserFactory工厂=null;
XmlPullParser=null;
试一试{
factory=XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
parser=factory.newPullParser();
setInput(is,null);
int eventType=parser.getEventType();
while(eventType!=XmlPullParser.END_文档){
字符串标记名=parser.getName();
开关(事件类型){
case XmlPullParser.START_标记:
if(标记名.equalsIgnoreCase(“CurrencyExchangePoint”)){
mapLT=新的mapLT();
}
打破
case XmlPullParser.TEXT:
text=parser.getText();
打破
case XmlPullParser.END_标记:
if(标记名.equalsIgnoreCase(“CurrencyExchangePoint”)){
mapLTList.add(mapLT);
}else if(标记名.equalsIgnoreCase(“地址”)){
映射设置地址(文本);
}else if(标记名.equalsIgnoreCase(“纬度”)){
setLatitude(Float.parseFloat(text));
}else if(标记名.equalsIgnoreCase(“经度”)){
setLongitude(Float.parseFloat(text));
}
打破
违约:
打破
}
eventType=parser.next();
}
}捕获(例外情况除外){
例如printStackTrace();
}
返回mapLTList;
}
}我无法在您的代码中发现问题,因此我的策略是添加日志。
首先打印您得到的所有事件标记和标记名。问题是6500中一个标记的值为空。。 我花了4个小时
List<MapLT> mapLTs = null;
try {
XMLPullParserHandler parserHandler = new XMLPullParserHandler();
mapLTs = parserHandler.parse(getAssets().open("ltlg.xml"));
for (MapLT item : mapLTs) {
LatLng lt = new LatLng(item.getLatitude(), item.getLongitude());
String title = item.getAddress();
googleMap.addMarker(new MarkerOptions().position(lt).title(title));
}
} catch (Exception ex) {
ex.printStackTrace();
}
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserFactory;
public class XMLPullParserHandler {
List<MapLT> mapLTList;
private MapLT mapLT;
private String text;
public XMLPullParserHandler() {
mapLTList = new ArrayList<MapLT>();
}
public List<MapLT> getMapLT(){
return mapLTList;
}
public List<MapLT> parse(InputStream is){
XmlPullParserFactory factory = null;
XmlPullParser parser = null;
try{
factory = XmlPullParserFactory.newInstance();
factory.setNamespaceAware(true);
parser = factory.newPullParser();
parser.setInput(is, null);
int eventType = parser.getEventType();
while(eventType != XmlPullParser.END_DOCUMENT){
String tagname = parser.getName();
switch (eventType){
case XmlPullParser.START_TAG:
if(tagname.equalsIgnoreCase("CurrencyExchangePoint")){
mapLT = new MapLT();
}
break;
case XmlPullParser.TEXT:
text = parser.getText();
break;
case XmlPullParser.END_TAG:
if(tagname.equalsIgnoreCase("CurrencyExchangePoint")){
mapLTList.add(mapLT);
} else if(tagname.equalsIgnoreCase("Address")){
mapLT.setAddress(text);
} else if(tagname.equalsIgnoreCase("Latitude")){
mapLT.setLatitude(Float.parseFloat(text));
} else if(tagname.equalsIgnoreCase("Longitude")){
mapLT.setLongitude(Float.parseFloat(text));
}
break;
default:
break;
}
eventType = parser.next();
}
}catch (Exception ex){
ex.printStackTrace();
}
return mapLTList;
}