第 3 篇 Scrum 冲刺博客

Posted 2021-01-28 m1sty

各个成员今日完成的任务（如果完成的任务为开发或测试任务，需给出对应的Github代码签入记录截图；如果完成的任务为调研任务，需给出对应的调研总结博客链接；如果完成的任务为学习技术任务，需给出学习总结博客链接）

陆大岳彭霖：实现登录功能

参考Java Web的编写实现了登录界面并登陆成功

import java.io.IOException;
import java.io.PrintWriter;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import net.sf.json.JSONObject;

/**
 * 测试登录Servlet
 *
 * @author Implementist
 */
public class LoginServlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {

        // 设置响应内容类型  
        response.setContentType("text/html;charset=utf-8");
        request.setCharacterEncoding("utf-8");
        response.setCharacterEncoding("utf-8");

        try (PrintWriter out = response.getWriter()) {

            //获得请求中传来的用户名和密码
            String accountNumber = request.getParameter("AccountNumber").trim();
            String password = request.getParameter("Password").trim();

            //密码验证结果
            Boolean verifyResult = verifyLogin(accountNumber, password);

            Map<String, String> params = new HashMap<>();
            JSONObject jsonObject = new JSONObject();

            if (verifyResult) {
                params.put("Result", "success");
            } else {
                params.put("Result", "failed");
            }

            jsonObject.put("params", params);
            out.write(jsonObject.toString());
        }
    }

    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        doPost(request, response);
    }

    /**
     * 验证用户名密码是否正确
     *
     * @param userName
     * @param password
     */
    private Boolean verifyLogin(String userName, String password) {
        User user = UserDAO.queryUser(userName);

        //账户密码验证
        return null != user && password.equals(user.getPassword());
    }
}

public void LoginRequest(final String accountNumber, final String password) {
        //请求地址
        String url = "http://59.110.141.197:8080/MyFirstWebAPP/LoginServlet";    //注①
        String tag = "Login";    //注②

        //取得请求队列
        RequestQueue requestQueue = Volley.newRequestQueue(getApplicationContext());

        //防止重复请求，所以先取消tag标识的请求队列
        requestQueue.cancelAll(tag);

        //创建StringRequest，定义字符串请求的请求方式为POST(省略第一个参数会默认为GET方式)
        final StringRequest request = new StringRequest(Request.Method.POST, url,
                new Response.Listener<String>() {
                    @Override
                    public void onResponse(String response) {
                        try {
                            JSONObject jsonObject = (JSONObject) new JSONObject(response).get("params");  //注③
                            String result = jsonObject.getString("Result");  //注④
                            if (result.equals("success")) {  //注⑤
                                Toast.makeText(getApplicationContext(),"登录成功",Toast.LENGTH_LONG).show();
                                Intent intent = null;
                                intent = new Intent(MainActivity.this,FunctionActivity.class);
                                intent.putExtra("Username", username.getText().toString());
                                startActivity(intent);
                            } else {
                                Toast.makeText(getApplicationContext(),"账号或密码错误",Toast.LENGTH_LONG).show();
                            }
                        } catch (JSONException e) {
                            Toast.makeText(getApplicationContext(),"连接失败",Toast.LENGTH_LONG).show();
                            Log.e("TAG", e.getMessage(), e);
                        }
                    }
                }, new Response.ErrorListener() {
            @Override
            public void onErrorResponse(VolleyError error) {
                //做自己的响应错误操作，如Toast提示（“请稍后重试”等）
                Log.e("TAG", error.getMessage(), error);
            }
        }) {
            @Override
            protected Map<String, String> getParams() throws AuthFailureError {
                Map<String, String> params = new HashMap<>();
                params.put("AccountNumber", accountNumber);  //注⑥
                params.put("Password", password);
                return params;
            }
        };

        //设置Tag标签
        request.setTag(tag);

        //将请求添加到队列中
        requestQueue.add(request);
    }

各个成员遇到的问题

• 问题1：登录失败
• 解决方案：没有配置LoginServlet的URL，应在web.xml中配置
  

<servlet>
        <servlet-name>LoginServlet</servlet-name>
        <servlet-class>chatask.LoginServlet</servlet-class>
    </servlet>

明日各个成员的任务安排

陆大岳、彭霖：编写签到功能
胡智韬：编写签到页面
牛浩远：写第四篇博客

?现阶段团队成员的贡献任务量（h）分别是：

陆大岳40
彭霖20
胡智韬0（未设计界面）
牛浩远0（未写博客）