Java网络编程知识点（1） Java网络编程知识点（1）

怎样将一个String对象转换成InputStream对象？

ByteArrayInputStream inputStream = new ByteArrayInputStream(str.getBytes());

怎样替换掉网络URL里面的參数值？

String baseURL = "http://sixweather.3gpk.net/SixWeather.aspx?city=%s"; String cityName = "武汉"; String resultURL = String.format(baseURL, cityName);

【Java网络编程知识点（1）】怎样在Java中訪问网络地址，获取返回结果？

// **************訪问网络，获取天气预报数据，将结果数据存储到result中******************* //初始化httpGet，将參数url传给它 HttpGet httpGet = new HttpGet(url); String result = ""; //初始化httpClient HttpClient httpClient = new DefaultHttpClient(); //调用httpClient的execute方法，返回一个HttpResponse的实例 HttpResponse httpResponse = httpClient.execute(httpGet); if (httpResponse.getStatusLine().getStatusCode() == HttpStatus.SC_OK) { //将httpResponse中的天气数据转换成字符串形式 result = EntityUtils.toString(httpResponse.getEntity()); }// ****************************************************************************************

怎样在Java中对字符串String进行编码、解码操作？

String cityName = "武汉"; try { //对cityName进行utf-8编码操作 cityName = URLEncoder.encode(cityName, "utf-8"); //对cityName进行utf-8解码操作 cityName = URLDecoder.decode(cityName, "utf-8"); } catch (Exception e) { e.printStackTrace(); }

转载于:https://www.cnblogs.com/lxjshuju/p/6887948.html