天气预报API地址：http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getWeatherbyCityName?theCityName=beijing<?xml version="1.0" encoding="utf-8" ?> - <ArrayOfString xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://WebXml.com.cn/">
<string>直辖市</string> <string>北京</string> <string>54511</string> 。。</ArrayOfString>整个天气预报的XML只有一个<string>元素，代码看了很久感觉没什么问题，onclick后报异常。后来单步调试运行发现 执行完第一次startElement后立马就报错了。DEBUG视图 弹出一个ExpatParser.startElement（）的标签页 内部标注了一行文本“Source not found.”
我这个代码应该怎么改~~真心不知道怎么办了WeatherReport.java
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public class WeatherReport extends Activity implements OnClickListener {
private static final String WEATHER_API_URL = "http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getWeatherbyCityName?theCityName=";
private static final String NETWORK_ERROR = "网络异常";
private EditText weather_city_edit;
private Button goQuery;
private TextView city;
private TextView weather;
private TextView wendu;
private ImageView imgweather;private String info="info";
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
city=(TextView) findViewById(R.id.city);
weather=(TextView) findViewById(R.id.weather);
wendu=(TextView) findViewById(R.id.wendu);
imgweather=(ImageView) findViewById(R.id.imgweather);
weather_city_edit = (EditText) findViewById(R.id.weather_city_edit);
goQuery = (Button) findViewById(R.id.goQuery);
goQuery.setOnClickListener(this);
}
public void onClick(View v) {
// 获得用户输入的城市名称
Log.i(info,"onClick");
String cityname = weather_city_edit.getText().toString().trim();
String resultStr=WEATHER_API_URL + cityname;
try {
// 构建SAXParser
URL url = new URL(resultStr);
javaBean javabean=new javaBean();
System.out.println(resultStr);
SAXParserFactory factory = SAXParserFactory.newInstance(); //创建一个SAX工厂
SAXParser parser = factory.newSAXParser();
XMLReader xmlreader = parser.getXMLReader(); //创建一个SAX解析器
SaxParseXml saxparsexml = new SaxParseXml();
xmlreader.setContentHandler(saxparsexml); //设置内容处理器，根据参数来调用特定类来处理各阶段的解析事件
xmlreader.parse(new InputSource(url.openStream()));//执行解析器解析
city.setText(javabean.getCity().toString());
weather.setText(javabean.getWeather().toString());
wendu.setText(javabean.getWendu().toString());} catch (ParserConfigurationException e) {
e.printStackTrace();
} catch (SAXException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}SaxParseXml.java
=======================
package com.skyfors;
import java.util.ArrayList;
import java.util.List;
import org.xml.sax.Attributes;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import android.util.Log;
public class SaxParseXml extends DefaultHandler {
// 存放遍历集合
private List<javaBean> list;
// 构建 对象
private javaBean javaBean;
// 用来存放每次遍历后的元素名称(节点名称)
private String tagName;
private int i;
private String info="info";
public List<javaBean> getList() {
return list;
}
public void setList(List<javaBean> list) {
this.list = list;
}
public javaBean getjavaBean() {
return javaBean;
}
public void setjavaBean(javaBean javaBean) {
this.javaBean = javaBean;
}
public String getTagName() {
return tagName;
}
public void setTagName(String tagName) {
this.tagName = tagName;
}
// 只调用一次 初始化list集合
@Override
public void startDocument() throws SAXException {
list = new ArrayList<javaBean>();
Log.i(info, "开始文档解析");
}
// 调用多次 开始解析
@Override
public void startElement(String uri, String localName, String qName,
Attributes attributes) throws SAXException {
switch (i) {
case 2:
javaBean.setCity(localName);
break;
case 6:
javaBean.setWendu(localName);
break;
case 7:
javaBean.setWeather(localName);
break;
case 10:
javaBean.setImgweather(localName);
break;
}
this.tagName = qName;
Log.i(info, "解析元素 "+tagName);
i++;
}
// 调用多次
@Override
public void endElement(String uri, String localName, String qName)
throws SAXException {
// if (qName.equals("javaBean")) {
// this.list.add(this.javaBean);
// }
this.tagName = null;
}
// 只调用一次
@Override
public void endDocument() throws SAXException {
Log.i(info, "文档解析完毕");
}
// 调用多次
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if (this.tagName != null) {
String date = new String(ch, start, length);
}
}
}
@Override
public void characters(char[] ch, int start, int length)
throws SAXException {
if (this.tagName != null) {
String date = new String(ch, start, length);
}
}
} 这一句有问题,应该将每次的数据追加到数据上一次的历史上.当判断没有数据时,可以清除掉.
嗯、第一次做xml的解析有些概念性的问题、现在已经理清头绪了。Thank~~