java开发接口利用http协议传输数据
这个接口主要用来登录，java服务器提供一个接口，移动设备客户端（android和ios）能通过这个接口把用户名和密码之类的东东传过来到服务器验证，然后服务器返回数据告诉客户端是否登录成功。比如0是成功，1是失败。中间数据的传递都是通过http协议完成.这个接口该怎么写？
代码1.2为服务器接口，接收到客户端的信息解析验证，并返回需要的信息。
服务端代码：
1 public class TestTransfers extends HttpServlet { 2 3private static final long serialVersionUID = 1L; 4 5//HttpServletRequest 和 HttpServletResponse 用于接收请求和返回接口值 6//doGet用于接收get方法 7protected void doGet(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException { 8 9} 10 11//doPost用于接收post方法 12protected void doPost(HttpServletRequest request,HttpServletResponse response) throws ServletException, IOException { 13 14 // 判断请求报文是否来自代维系统的ip地址 15 String ip = request.getRemoteHost(); 16 // 获取收到的报文 17 BufferedReader reader = request.getReader(); 1819 String line = ""; 20 21 StringBuffer inputString = new StringBuffer(); 22 23 while ((line = reader.readLine()) != null) { 24 25 inputString.append(line); 26 27 } 28 // 如有必要，可以在报文中增加其他验证和加密的参数 29 // 解析获取到的报文，根据ip地址、其他验证、加密等等来判断请求报文的服务器是否有权限 30 // 如果请求验证合格，则根据请求的参数装配返回的报文 31 // 要返回的报文 32 StringBuffer resultBuffer = new StringBuffer(); 33 34 resultBuffer.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); 35 36 resultBuffer.append("<report_data>"); 37 38 resultBuffer.append("<respon_req>953947334</respon_req>"); 39 40 resultBuffer.append("<respon_time>0402113943</respon_time>"); 41 42 resultBuffer.append("<result>"); 43 44 resultBuffer.append("<id>0000</id>"); 45 46 resultBuffer.append("<comment>成功</comment>"); 47 48 resultBuffer.append("</result>"); 49 50 resultBuffer.append("<items>"); 51 52 resultBuffer.append("<item>"); 53 54 resultBuffer.append("<county>长治县</county>"); 55 56 resultBuffer.append("<company>铁通</company>"); 57 58 resultBuffer.append("<speciality>线路</speciality>"); 59 60 resultBuffer.append("<personnel>王加和</personnel>"); 61 62 resultBuffer.append("<begin_time>0301000000</begin_time>"); 63 64 resultBuffer.append("<end_time>0331235959</end_time>"); 65 66 resultBuffer.append("<plan_quantity>50</plan_quantity>"); 67 68 resultBuffer.append("<checkout_quantity>40</checkout_quantity>"); 69 70 resultBuffer.append("<patrol_rate>0.80</patrol_rate>"); 71 72 resultBuffer.append("</item>"); 73 74 // ...... 75 76 // ...... 77 78 // ...... 79 80 // 循环组装响应的报文 81 82 resultBuffer.append("</items>"); 83 84 resultBuffer.append("</report_data>"); 85 86 // 设置发送报文的格式 87 88 response.setContentType("text/xml"); 89 90 response.setCharacterEncoding("UTF-8"); 91 92 PrintWriter out = response.getWriter(); 93 94 out.println(resultBuffer.toString()); 95 96 out.flush(); 97 98 out.close(); 99 100}101 102 }
客户端调用代码：
1 public void sendMessage() throws Exception { 2System.out.println("调用servlet开始================="); 3StringBuffer sendStr = new StringBuffer(); 4sendStr.append("<?xml version=\"1.0\" encoding=\"UTF-8\"?>"); 5sendStr.append("<report_data>"); 6sendStr.append("<request_req>953943547334</request_req>"); 7sendStr.append("<request_time>040211394324</request_time>"); 8sendStr.append("<request_param>"); 9sendStr.append("<query_month>03</query_month>");10sendStr.append("</request_param>");11sendStr.append("</report_data>");12BufferedReader reader = null;13try {14 String strMessage = "";15 StringBuffer buffer = new StringBuffer();16 // 接报文的地址17 URL uploadServlet = new URL(18"http://localhost:9090/TestTransfers");19 HttpURLConnection servletConnection = (HttpURLConnection) uploadServlet20.openConnection();21 // 设置连接参数22 servletConnection.setRequestMethod("POST");23 servletConnection.setDoOutput(true);24 servletConnection.setDoInput(true);25 servletConnection.setAllowUserInteraction(true);26 // 开启流，写入XML数据27 OutputStream output = servletConnection.getOutputStream();28 System.out.println("发送的报文：");29 System.out.println(sendStr.toString());30 output.write(sendStr.toString().getBytes());31 output.flush();32 output.close();33 // 获取返回的数据34 InputStream inputStream = servletConnection.getInputStream();35 reader = new BufferedReader(new InputStreamReader(inputStream));36 while ((strMessage = reader.readLine()) != null) {37 buffer.append(strMessage);38 }39 System.out.println("接收返回值:" + buffer);40} catch (.ConnectException e) {41 throw new Exception();42} finally {43 if (reader != null) {44 reader.close();45 }46}47 }48 49
