SAX解析

来源：互联网发布：经典网络流行语言大全编辑：程序博客网时间：2024/05/04 13:52

public class SAXHandler extends DefaultHandler {

   public static List<DataBean>list;
   DataBean databean;
   private String str;
   String txt;
   /*
   * 文档开始解析
   */
   @Override
   public void startDocument() throws SAXException {


       super.startDocument();
       Log.e("TAG", "整个文档开始解析");
       //创建集合
       list=new ArrayList<DataBean>();
   }
   /*
   * 标签开始
   */
   @Override
   public void startElement(String uri, String localName, String qName,
           Attributes attributes) throws SAXException {
       // TODO Auto-generated method stub
       super.startElement(uri, localName, qName, attributes);
       Log.e("TAG", "标签开始解析");
       str=localName;
       if(localName.equals("food")){
           //实例化封装类
           databean=new DataBean();
           //将解析的数据放入封装类中
           databean.setId(attributes.getValue("id"));
       //   String iamg=attributes.getValue("imageurl");
       //   databean.setImageurl(Integer.parseInt(iamg));
           databean.setImageurl(attributes.getValue("imageurl"));
           databean.setFoodtitle(attributes.getValue("foodtitle"));
           databean.setFoodcontent(attributes.getValue("foodcontent"));
           databean.setFoodprice(attributes.getValue("foodprice"));

           Log.e("TAG", "属性==="+attributes.getValue("id")+",,"
           +attributes.getValue("imageurl")+",,"
                   +attributes.getValue("foodtitle")+",,"+attributes.getValue("foodcontent")+",,"+attributes.getValue("foodprice"));
       }
   }
   /*
   * 文本开始
   */
   @Override
   public void characters(char[] ch, int start, int length)
           throws SAXException {
       // TODO Auto-generated method stub
       super.characters(ch, start, length);

       txt=new String(ch, start, length);
   }

   /*
   * 标签结束
   */
   @Override
   public void endElement(String uri, String localName, String qName)
           throws SAXException {
       // TODO Auto-generated method stub
       super.endElement(uri, localName, qName);
       Log.e("TAG", "标签解析结束");
       if(localName.equals("imageurl")){
           //databean.setImageurl(Integer.parseInt(txt));
           databean.setImageurl(txt);
           Log.e("TAG", "imageurl="+txt);
       }else if(localName.equals("foodtitle")){
           databean.setFoodtitle(txt);
           Log.e("TAG", "foodtitle="+txt);
       }else if(localName.equals("foodcontent")){
           databean.setFoodcontent(txt);
           Log.e("TAG", "foodcontent="+txt);
       }else if(localName.equals("foodprice")){
           databean.setFoodprice(txt);
           Log.e("TAG", "foodprice="+txt);
       }else if(localName.equals("food")){
           //把对象加入集合
           list.add(databean);
       }
       str="";
   }

   /*
   * 文档结束
   */
   @Override
   public void endDocument() throws SAXException {
       // TODO Auto-generated method stub
       super.endDocument();
       Log.e("TAG", "文档结束");
   }
   public List<DataBean>getlist(){
       return list;

   }
}

public class MainActivity extends Activity {

   private Button bt_jiexi;
   private Button bt_show;

   @Override
   protected void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.activity_main);
       init();
   }

   private void init() {
       // 找对象
       bt_jiexi=(Button)findViewById(R.id.bt_jiexi);
       bt_show=(Button)findViewById(R.id.bt_show);
       bt_jiexi.setOnClickListener(new OnClickListener() {

           @Override
           public void onClick(View v) {
               //创建工厂
               SAXParserFactory factory=SAXParserFactory.newInstance();
               //实例化帮助类
               SAXHandler saxhandler=new SAXHandler();
               try {
                   //创建SAX解析器
                   SAXParser parser=factory.newSAXParser();
                   //获得要解析的文件
                   try {
                       parser.parse(getAssets().open("data.xml"),saxhandler);
                   } catch (IOException e) {
                       // TODO Auto-generated catch block
                       e.printStackTrace();
                   }
                   List<DataBean> list=saxhandler.getlist();

               } catch (ParserConfigurationException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
               } catch (SAXException e) {
                   // TODO Auto-generated catch block
                   e.printStackTrace();
               }
           }
       });

       bt_show.setOnClickListener(new OnClickListener() {

           @Override
           public void onClick(View v) {
               // 跳转到展示页面
               Intent intent=new Intent(MainActivity.this,ShowActivity.class);
               startActivity(intent);
           }
       });
   }

}

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