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  • getpost请求案例

    public class MainActivity extends AppCompatActivity {
        private ListView lv;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
            //找控件
            lv = (ListView) findViewById(R.id.lv);
            new Thread(){
                @Override
                public void run() {
                    getMenuInfoForPost("红烧肉","e3c3dd5597dd875ff29c665a25b74025");
                }
            }.start();
        }
        /**
         * HttpURLConnection请求数据
         * 请求方式 : post
         */
        private void getMenuInfoForPost(String menu,String key){
            try {
                URL url = new URL("http://apis.juhe.cn/cook/query.php");
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                //请求方式必须大写
                connection.setRequestMethod("POST");
                connection.setConnectTimeout(5000);
                connection.setReadTimeout(5000);
                //设置请求参数
                OutputStream os = connection.getOutputStream();
                os.write(("menu="+ URLEncoder.encode(menu,"utf-8")+"key="+key).getBytes());
                os.flush();
                //等待服务器响应
                int code = connection.getResponseCode();
                if(code == 200){
                    InputStream is = connection.getInputStream();
                    String menuInfo = StreamTools.readFromNetWork(is);
                    Gson gson = new Gson();
                    MenuInfo info = gson.fromJson(menuInfo, MenuInfo.class);
                    System.out.println("结果-->"+info);
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
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  • 原文地址:https://www.cnblogs.com/leshen/p/7364233.html
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