XStream工具类解析XML

这里使用XUtils进行网络请求XML，使用XStream进行解析XML，封装成集合

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 - XML数据

<root><resultcode>200resultcode><reason>successreason><result><item><id>242id><catalog>中国文学catalog>item><item><id>252id><catalog>人物传记catalog>item><item><id>244id><catalog>儿童文学catalog>item><item><id>248id><catalog>历史catalog>item><item><id>257id><catalog>哲学catalog>item><item><id>243id><catalog>外国文学catalog>item><item><id>247id><catalog>小说catalog>item><item><id>251id><catalog>心灵鸡汤catalog>item><item><id>253id><catalog>心理学catalog>item><item><id>250id><catalog>成功励志catalog>item><item><id>249id><catalog>教育catalog>item><item><id>245id><catalog>散文catalog>item><item><id>256id><catalog>理财catalog>item><item><id>254id><catalog>管理catalog>item><item><id>246id><catalog>经典名著catalog>item><item><id>255id><catalog>经济catalog>item><item><id>258id><catalog>计算机catalog>item>result><error_code>0error_code>root>

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• xml数据对应的bean类(注意字段要添加完整)

 - package com.example.bean;

import java.util.ArrayList;

import com.thoughtworks.xstream.annotations.XStreamAlias;
import com.thoughtworks.xstream.annotations.XStreamImplicit;

//添加注解
@XStreamAlias("root")
public class MyRoot {
      public String resultcode;
      public String reason;
      public String error_code;

    @XStreamAlias("result")
    public MyResult result;
    public static class MyResult
    {   
        @XStreamImplicit(itemFieldName="item")
        public ArrayList item;

        public static class MyItem
        {
            public String id;
            public String catalog;
        }
    }
}

---

• 在Activity中

 -package com.example.myandroid_xmlstream;

import java.util.ArrayList;

import com.example.bean.MyRoot;
import com.example.bean.MyRoot.MyResult.MyItem;
import com.lidroid.xutils.HttpUtils;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.lidroid.xutils.http.client.HttpRequest.HttpMethod;
import com.thoughtworks.xstream.XStream;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;

public class MainActivity extends Activity {



    //xml路径
    private String url="http://apis.juhe.cn/goodbook/catalog?key=cdcde130a384bdf960030a563e7e1954&dtype=xml";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        //请求网络
        getNetWork(url);
    }
    private void getNetWork(String path) {

        //创建请求对象
        HttpUtils httpUtils = new HttpUtils();

        //设置发送的请求方式，路径，返回的回调方法
        httpUtils.send(HttpMethod.GET, path, new RequestCallBack() {

            //请求失败
            @Override
            public void onFailure(HttpException arg0, String arg1) {

            }
            //请求成功
            @Override
            public void onSuccess(ResponseInfo arg0) {
                //获取xml字符串
                String xmlString = arg0.result;
                //解析xml
                xStreamXml(xmlString);
            }

        });


    }
    //解析xml的方法
    private void xStreamXml(String xmlString) {
        //创建解析xml的工具类对象
        XStream xs = new XStream();
        //处理注解
        xs.processAnnotations(MyRoot.class);
        //根据xml数据进行反射成bean类
        MyRoot root = (MyRoot) xs.fromXML(xmlString);
        //创建对应的集合
        ArrayList ilist = new ArrayList();
        //为集合赋值
        ilist = root.result.item;
        //遍历集合打印得出的数据
        for (MyItem myItem : ilist) {
        System.out.println("id="+myItem.id+"：：catalog="+myItem.catalog);
    }


    }


}