Http网络获取get/post

<LinearLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context="net.bwie.network.activity.MainActivity">    <Button        android:id="@+id/next_btn"        android:text="下一页POST请求"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/>    <Button        android:id="@+id/get_network_data_btn"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="下载网络数据"/>    <Button        android:id="@+id/get_pic_btn"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="获取网络图片"/>    <ImageView        android:id="@+id/image_view"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@mipmap/ic_launcher"/>

</LinearLayout>

Bean类：

public class KaiYan {    private List<ItemBean> itemList;    public List<ItemBean> getItemList() {        return itemList;    }    public void setItemList(List<ItemBean> itemList) {        this.itemList = itemList;    }    public static class ItemBean {        private String type = "";        private DataBean data;        public String getType() {            return type;        }        public void setType(String type) {            this.type = type;        }        public DataBean getData() {            return data;        }        public void setData(DataBean data) {            this.data = data;        }        public static class DataBean {            private String playUrl = "";            private String title = "";            public String getPlayUrl() {                return playUrl;            }            public void setPlayUrl(String playUrl) {                this.playUrl = playUrl;            }            public String getTitle() {                return title;            }            public void setTitle(String title) {                this.title = title;            }        }    }}
** * 下一页post请求 * 使用异步任务下载网络数据 * 使用gson解析 * 注：有时间看看我讲的原生json解析 */public class MainActivity extends AppCompatActivity implements View.OnClickListener {    public static final String KAI_YAN_URL = "http://baobab.kaiyanapp.com/api/v4/tabs/selected?udid=11111&vc=168&vn=3.3.1&deviceModel=Huawei%36&first_channel=eyepetizer_baidu_market&last_channel=eyepetizer_baidu_market&system_version_code=20";    protected Button mGetNetworkDataBtn;    protected Button mGetPicBtn;    protected ImageView mImageView;    protected Button mNextBtn;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        super.setContentView(R.layout.activity_main);        initView();    }    @Override    public void onClick(View view) {        if (view.getId() == R.id.get_network_data_btn) {            getDatas();        } else if (view.getId() == R.id.get_pic_btn) {            getPicture();        } else if (view.getId() == R.id.next_btn) {            PostActivity.startActivity(this);        }    }    private void getDatas() {        MyTask task = new MyTask();        task.execute(KAI_YAN_URL);    }    private void getPicture() {        String imgUrl = "http://img.kaiyanapp.com/1699f3946ccd281230a1d887d169439f.png?imageMogr2/quality/60/format/jpg";        Picasso                .with(this)                .load(imgUrl)                .into(mImageView);    }    private void initView() {        mGetNetworkDataBtn = (Button) findViewById(R.id.get_network_data_btn);        mGetNetworkDataBtn.setOnClickListener(MainActivity.this);        mGetPicBtn = (Button) findViewById(R.id.get_pic_btn);        mGetPicBtn.setOnClickListener(MainActivity.this);        mImageView = (ImageView) findViewById(R.id.image_view);        mNextBtn = (Button) findViewById(R.id.next_btn);        mNextBtn.setOnClickListener(MainActivity.this);    }    private class MyTask extends AsyncTask<String, Void, List<KaiYan.ItemBean>> {        @Override        protected List<KaiYan.ItemBean> doInBackground(String... params) {            String requestUrl = params[0];            // 使用HTTPUrlConnection            try {                URL url = new URL(requestUrl);                HttpURLConnection connection = (HttpURLConnection) url.openConnection();                // 配置connection                connection.setRequestMethod("GET");// GET或POST必须大写                // 连接网络                connection.connect();                // 判断是否连接成功                if (connection.getResponseCode() == 200) {                    // 获取来自网络的输入流                    // 使用缓冲字符输入流                    // 字节流转字符流                    BufferedReader br = null;                    br = new BufferedReader(new InputStreamReader(connection.getInputStream()));                    // 最终接收的json字符串                    String json = "";                    // 使用缓冲流读取到的每一行数据                    String line = "";                    while ((line = br.readLine()) != null) {                        json += line.trim();                    }                    // json数据产生完毕，该解析了                    Gson gson = new Gson();                    KaiYan kaiYan = gson.fromJson(json, KaiYan.class);                    List<KaiYan.ItemBean> itemList = kaiYan.getItemList();                    return itemList;                }            } catch (Exception e) {                e.printStackTrace();                Log.d("1507", e.getMessage());            }            return null;        }        @Override        protected void onPostExecute(List<KaiYan.ItemBean> itemList) {            super.onPostExecute(itemList);            // 可以使用RecyclerView或ListView展示数据            for (KaiYan.ItemBean itemBean : itemList) {                Log.d("1507", "type: " + itemBean.getType() +                        ", title: " + itemBean.getData().getTitle() +                        ", url" + itemBean.getData().getPlayUrl());            }        }    }}
Post请求：
<RelativeLayout    xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:app="http://schemas.android.com/apk/res-auto"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    tools:context="net.bwie.network.activity.PostActivity">    <Button        android:id="@+id/post_btn"        android:text="post请求"        android:layout_width="wrap_content"        android:layout_height="wrap_content"/></RelativeLayout>
public class Person {    private String name = "";    private String age = "";    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public String getAge() {        return age;    }    public void setAge(String age) {        this.age = age;    }}
public class PostActivity extends AppCompatActivity implements View.OnClickListener {    protected Button mPostBtn;    public static void startActivity(Context context) {        context.startActivity(new Intent(context, PostActivity.class));    }    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        super.setContentView(R.layout.activity_post);        initView();    }    @Override    public void onClick(View view) {        if (view.getId() == R.id.post_btn) {            doPost();        }    }    // 使用异步任务执行POST请求    private void doPost() {        String url = "http://172.21.66.7:8080/postdemo";        PostTask task = new PostTask();        task.execute(url);    }    private void initView() {        mPostBtn = (Button) findViewById(R.id.post_btn);        mPostBtn.setOnClickListener(PostActivity.this);    }    private class PostTask extends AsyncTask<String, Void, Person> {        @Override        protected Person doInBackground(String... params) {            String requestUrl = params[0];//            try {                URL url = new URL(requestUrl);                HttpURLConnection connection = (HttpURLConnection) url.openConnection();                // 设置POST请求                connection.setRequestMethod("POST");                // 设置可向服务器输出                connection.setDoOutput(true);                connection.setDoInput(true);                // 打开连接                connection.connect();                // 打开连接后，向服务端写要提交的参数                // 参数格式：“name=asdasdas&age=123123”                StringBuilder stringBuilder = new StringBuilder();                stringBuilder.append("name=")                        .append("wuyanzu")// 拼接自己传入的姓名                        .append("&")                        .append("age=")                        .append("123");// 拼接自己传入的年龄                // 获取向服务器写数据的输出流                connection.getOutputStream()                        .write(stringBuilder.toString().getBytes());                // 提交数据后，获取来自服务器的json数据                if (connection.getResponseCode() == 200) {                    BufferedReader br = null;                    br = new BufferedReader(new InputStreamReader(connection.getInputStream()));                    String json = "";                    String line = "";                    while ((line = br.readLine()) != null) {                        json += line.trim();                    }                    // 解析                    Gson gson = new Gson();                    Person person = gson.fromJson(json, Person.class);                    return person;                }            } catch (Exception e) {                e.printStackTrace();                Log.d("1507", e.getMessage());            }            return null;        }        @Override        protected void onPostExecute(Person person) {            super.onPostExecute(person);            Log.d("1507", "name:" + person.getName() + ", age: " + person.getAge());        }    }}