4.开发支持APP登录的移动服务端接口。接收APP登录请求，采用HttpClient转发至CAS认证中心登录，返回json数据解析并最终返回给客户端。本地会话采用redis维护,登录成功，返回access_token。
接口定义：url: /login.json
入参： username string
password string
出参： ret string
msg string
access_token string
核心代码如下：
作者：手插口袋_
链接：https://www.imooc.com/article/4200
来源：慕课网
https://www.imooc.com/article/4200
1 @RequestMapping("/login.json") 2 public @ResponseBody ResultBean login(HttpServletRequest request, 3 HttpServletResponse response) { 4 5 ResultBean resultBean = new ResultBean(); 6 String username = request.getParameter("username"); 7 String password = request.getParameter("password"); 8 9 HttpClient httpClient = new DefaultHttpClient(); 10 11 String url = SSO_SERVER_URL + "?mode=app&service=" + SSO_CLIENT_SERVICE; 12 13 HttpGet httpGet = new HttpGet(url); 14 try{ 15 HttpResponse httpClientResponse = httpClient.execute(httpGet); 16 int statusCode = httpClientResponse.getStatusLine().getStatusCode(); 17 if (statusCode == HttpStatus.SC_OK){ 18 String result = EntityUtils.toString(httpClientResponse.getEntity(), 19 "utf-8").replace(' 20 ', ' ').replace(' 21 ', ' ').trim(); 22 //解析json数据 23 ObjectMapper objectMapper = new ObjectMapper(); 24 LtBean ltBean = objectMapper.readValue(result, LtBean.class); 25 List<NameValuePair> formparams = new ArrayList<NameValuePair>(); 26 formparams.add(new BasicNameValuePair("username", username)); 27 formparams.add(new BasicNameValuePair("password", password)); 28 formparams.add(new BasicNameValuePair("lt", ltBean.getLt())); 29 formparams.add(new BasicNameValuePair("execution", ltBean.getExecution())); 30 formparams.add(new BasicNameValuePair("_eventId", "submit")); 31 32 UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formparams, "UTF-8"); 33 HttpPost httpPost = new HttpPost(SSO_SERVER_URL); 34 httpPost.setEntity(entity); 35 36 httpClientResponse = httpClient.execute(httpPost); 37 statusCode = httpClientResponse.getStatusLine().getStatusCode(); 38 39 if (statusCode == HttpStatus.SC_OK){ 40 result = EntityUtils.toString(httpClientResponse.getEntity(), "utf-8") 41 .replace(' 42 ', ' ').replace(' 43 ', ' ').trim(); 44 45 objectMapper = new ObjectMapper(); 46 resultBean = objectMapper.readValue(result, ResultBean.class); 47 if(resultBean.getRet().equals("")){ 48 String access_token = UUID.randomUUID().toString(); //会话句柄 49 TokenUtil.setAccess_token(access_token, username); //放入redis 50 resultBean.setRet("0"); 51 resultBean.setMsg("登录成功"); 52 resultBean.setAccess_token(access_token); 53 } 54 } 55 } 56 57 }catch(Exception e){ 58 e.printStackTrace(); 59 resultBean.setRet("-2"); 60 resultBean.setMsg("系统服务错误，请稍后再试!"); 61 return resultBean; 62 }finally{ 63 httpClient.getConnectionManager().shutdown(); 64 } 65 return resultBean; 66 } 67 68 作者：手插口袋_ 69 链接：https://www.imooc.com/article/4200 70 来源：慕课网