HttpClient请求数据-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_35840599/article/details/52183458

本文展示了一个简单的Android应用示例，通过HTTP GET请求从指定API获取处女座的年度运势信息，并将返回的数据解析为Java Bean对象，最后显示在界面上。

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public class MainActivity extends Activity {

//路径
String path = "http://web.juhe.cn:8080/constellation/getAll?consName=处女座&type=year&key=3ac9f31ff66b9746539472887b3799c3";
private TextView tv;

Handler handler=new Handler(){
  public void handleMessage(Message msg) {
   Bean bean=(Bean) msg.obj;
   tv.setText(bean.toString());
  };
};

@Override
protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  tv=(TextView) findViewById(R.id.tv);
}

// 请求数据按钮
public void send(View v) {
  new Thread(){
   public void run() {
    getData();
   }

}.start();
}

protected void getData() {
  //得到连接方式对象，设置路径
  HttpGet httpGet=new HttpGet(path);
  //得到对象
  HttpClient httpClient=new DefaultHttpClient();

  try {
   //GET方式请求，得到响应内容
   HttpResponse httpResponse = httpClient.execute(httpGet);
   //得到状态行
   StatusLine statusLine = httpResponse.getStatusLine();
   //得到状态码
   int statusCode = statusLine.getStatusCode();
   if(statusCode==200){
    //得到携带数据的实体
    HttpEntity entity = httpResponse.getEntity();
    //转换成String,并设置编码格式
    String data = EntityUtils.toString(entity, "utf-8");
    //开始解析
    Gson gson=new Gson();
    Bean bean = gson.fromJson(data, Bean.class);
    Message msg=Message.obtain();
    msg.obj=bean;
    handler.sendMessage(msg);
   }

  } catch (ClientProtocolException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
  }

}