单点登录之，客户端

惯例：

我是温浩然：

单点登录的客户端配置，客户端不直接操作数据库，而是与其他项目相结合，对浏览器进行操作。

下面贴登录中，客户端的代码。

package com.tujia.tuuser.controller;import java.io.IOException;import java.util.Map;import javax.annotation.Resource;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import net.sf.json.JSONObject;import org.apache.http.HttpResponse;import org.apache.http.client.ClientProtocolException;import org.apache.http.client.methods.HttpPost;import org.apache.http.entity.StringEntity;import org.apache.http.impl.client.DefaultHttpClient;import org.apache.http.util.EntityUtils;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.RequestBody;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import com.google.gson.Gson;import com.google.gson.JsonObject;import com.tujia.corelogin.security.SecurityUtil;import com.tujia.tucommon.config.ResultCode;import com.tujia.tucommon.controller.BaseController;import com.tujia.tuuser.entity.User;@Controllerpublic class UserLoginController extends BaseController {@Resourceprivate SecurityUtil securityUtil;@RequestMapping(value = "/tulogin", produces = "text/html")    public String listByUser(Model model,HttpServletRequest request, HttpServletResponse response) {    securityUtil.requrl(request,response);    return "tulogin";    }//没有权限访问此请求@RequestMapping(value = "/noauthority", produces = "text/html")    public String noAuthority(Model model,HttpServletRequest request, HttpServletResponse response) {        return "noAuthority";    }/** * 退出接口 */@RequestMapping(value = "/tulogout",method =RequestMethod.POST)public void logout(HttpServletRequest request, HttpServletResponse response) {ResultCode resultCode = ResultCode.SUCCEED;securityUtil.logout(request, response);Object result = null;setResponse(response, resultCode, result);}@RequestMapping(value = "/tulogin")public void login(HttpServletRequest request,HttpServletResponse response,@RequestBody Map<String, Object> map){Object resultCode = ResultCode.SUCCEED;Object result = null;securityUtil.requrl(request,response);String phone = (String) map.get("phone");String password = (String) map.get("password");String requrl = request.getRequestURI();DefaultHttpClient httpClient = new DefaultHttpClient();HttpPost method = new HttpPost("http://localhost:8080/tu-login/tuloginMethod");JSONObject jsonParam = new JSONObject();jsonParam.put("phone", phone);jsonParam.put("password", password);jsonParam.put("requrl", requrl);StringEntity entity = new StringEntity(jsonParam.toString(), "utf-8");entity.setContentEncoding("UTF-8");entity.setContentType("application/json");method.setEntity(entity);HttpResponse resGet;try {//通过DefaultHttpClient 来获得返回的参数（值）resGet = httpClient.execute(method);//将返回值设置编码格式，（避免乱码）String resData = EntityUtils.toString(resGet.getEntity(),"utf-8");//通过net.sf.json.JSONObject 来解析字符串JSONObject resJSON = JSONObject.fromObject(resData);//把json中的user对象获取，并强转。Object userjson = resJSON.get("user");String userString = userjson.toString();//通过com.google.gson.Gson 来处理json 类型的user对象。Gson gson = new Gson();//user就是转换后的对象。//在这里，我对com.google.gson.JsonObject有点疑问，为啥这个不能解析返回的字符串呢？//这个类有什么作用？JsonObject jsonObj = new JsonObject();jsonObj.getAsJsonObject(resData);if("A00000".equals(resJSON.get("code"))){User user = gson.fromJson((String) userString, User.class);String token = (String)resJSON.get("token");securityUtil.addCookieToken(request,response,token,user.getId());request.getSession().setAttribute("user", user);}if ( !"A00000".equals(resJSON.get("code"))) {result = resJSON.get("data");}else{result = securityUtil.getReqURL(request,response);}resultCode = resJSON.get("code");} catch (ClassCastException e) {logger.error(e.getMessage());resultCode = ResultCode.INTERNAL_ERROR;result = e.getMessage();}catch (ClientProtocolException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}setResponse(response, resultCode, result);}}

在这里面，比较难的就是，与服务器交互的这一段代码，反正我以前是没听过没用过。其他的地方，没有什么难的了。再就是其他的一些具体的需求了。