android http 通信（java原生类库实现）

get方式

private void doGet(){
　　URL httpurl = new URl(url);
　　HttpURLConnection  conn = (HttpURLConnection)httpUrl.openConnection();
　　conn.setRequestMethod("GET");
　　conn.setReadTimeout(5000);
　　BufferedReader reader = new BuffedReader(new InputStreamReader(conn.getInputStream));
　　String str;
　　StringBuffer sb = new StringBuffer();
　　while((str = reader.readLine()) != null){
   　　sb.append(str);
　　}
}

post方式

private void doPost(){
　　URL httpUrl = new URL(url);
　　HttpURLconnection conn = (HttpURLConnection)  httpUrl.openConnection();
　　conn.setRequestMethod("POST");
　　conn.setReadTimeout(5000);
　　OutputStream out = conn.getOutputStream();
　　String content = "name"+name+"age"+age;
　　out.write(content.getBytes());
　　BufferedReader reader = new BufferedReader(new InputStreamReader(conn.getInputStream()));
　　StringBuffer sb = new StrintgBuffer();
　　String str;
　　while((str = reader.readLine())!=null){
  　　　　sb.append(str);
　　}
}

服务器端解决乱码问题

String name = request.getParameter("name");
response.setContentType("text/html;charset=utf-8");
PrintWriter out = response.getWriter();
name = new String(name.getBytes("iso-8859-1"),"utf-8");

android解决乱码问题

get方式：URLEncoder.encode(name,"utf-8");
post方式：不会产生乱码，因为android系统默认使用utf-8编码

获取android系统默认配置信息

Properties property = System.getProperties();
property.list(System.out);