上一篇文章實現(xiàn)了微信登錄的移動端功能，下面繼續(xù)完善功能，實現(xiàn)微信登錄服務(wù)端功能

在以往文章里已經(jīng)實現(xiàn)了服務(wù)端mvc框架，而登錄和注冊是類似，所以只需要在web層創(chuàng)建一個Servlet用于和客戶端完成數(shù)據(jù)交互且在service層和dao層中在相應(yīng)的接口添加相應(yīng)的抽象方法，然后再實現(xiàn)類中重寫就好了。

創(chuàng)建Servlet Login.java,實現(xiàn)服務(wù)端和客戶端的數(shù)據(jù)交互

Login.java

package com.example.controller;import com.alibaba.fastjson.JSON;import com.alibaba.fastjson.JSONObject;import com.example.pojo.User;import com.example.service.UserServiceImpl;import javax.servlet.*;import javax.servlet.http.*;import javax.servlet.annotation.*;import java.io.BufferedReader;import java.io.IOException;import java.io.InputStreamReader;import java.net.URLDecoder;@WebServlet(name = 'Login', value = '/Login')public class Login extends HttpServlet { @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {doPost(request, response); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {//設(shè)置字符編碼，防止中文亂碼request.setCharacterEncoding('utf-8');response.setCharacterEncoding('UTF-8');//以json數(shù)據(jù)完成操作response.setContentType('application/json;charset=UTF-8');System.out.println(request.getContentType());// 得到客戶端發(fā)送過來內(nèi)容的類型，application/json;charset=UTF-8System.out.println(request.getRemoteAddr());// 得到客戶端的ip地址，BufferedReader br = new BufferedReader(new InputStreamReader(// 使用字符流讀取客戶端發(fā)過來的數(shù)據(jù)request.getInputStream()));String line = null;StringBuffer s = new StringBuffer();//StringBuffer String的區(qū)別，如果要對數(shù)據(jù)作?繁的修改，?t用StringBuffer// 以一行的形式讀取數(shù)據(jù)while ((line = br.readLine()) != null) { s.append(line);}// 關(guān)閉io流br.close();System.out.println(s.toString());//JSON：這是json解析包，IDEA是沒有，要我們自己導(dǎo)入User user = JSON.parseObject(s.toString(), User.class);//是用了反射機制?磽瓿啥韻蟮姆獗//以utf-8解碼操作String number = URLDecoder.decode(user.getNumber(), 'utf-8');String password = URLDecoder.decode(user.getPassword(), 'utf-8');System.out.println('微信號:' + number + ', 密碼;' + password);System.out.println(user);// 去數(shù)據(jù)庫完成用戶登錄功能UserServiceImpl us = new UserServiceImpl();//調(diào)用登錄的方法User user1 = us.login(number, password);boolean loginInfo = false;if (user1 != null) { //登錄成功 loginInfo = true;}//將結(jié)果返回給客戶端，將?果構(gòu)建成json數(shù)據(jù)返回給客?舳JSONObject rjson = new JSONObject();rjson.put('json', loginInfo);response.getOutputStream().write(rjson.toString().getBytes('UTF-8'));// 向客戶端發(fā)送一個帶有json對象內(nèi)容的響應(yīng) }}

在service層中的接口UserService.java添加處理登錄業(yè)務(wù)邏輯處理的抽象方法

//用戶登錄 User login(String number,String password);

在service層中的類UserServiceImpl.java重寫上面接口剛添加的方法

@Override public User login(String number, String password) {//調(diào)用dao層完成數(shù)據(jù)查詢操作User user = ud.findByUsername(number);if (user != null) { //比較密碼 if (password.equals(user.getPassword())) {//登錄成功return user; }}return null; }

在dao層中的接口UserDao .java添加處理登錄數(shù)據(jù)并操作數(shù)據(jù)庫的的抽象方法

//查詢用戶通過微信號 User findByUsername(String number);

在dao層中的類UserDaoImpl.java重寫上面接口剛添加的方法

@Override public User findByUsername(String number) {//判斷數(shù)據(jù)是用戶名還是手機Pattern pattern = Pattern.compile('^(13[0-9]|15[0-9]|153|15[6-9]|180|18[23]|18[5-9])d{8}$');Matcher matcher = pattern.matcher(number);//手機sql執(zhí)行語句if (matcher.matches()) { //sql String sql = 'select * from user where phone=?'; rs = JDBCUtil.executeQuery(sql, number);} else { //用戶名sql執(zhí)行語句 //sql String sql = 'select * from user where number=?'; rs = JDBCUtil.executeQuery(sql, number);}//判斷是否查詢到用戶try { if (rs.next()) {//如果查詢到用戶，將用戶封裝到User對象中int id = rs.getInt('id');String number1 = rs.getString('number');String name = rs.getString('name');String password = rs.getString('password');String phone = rs.getString('phone');String remark = rs.getString('remark');//將查詢到的用戶封裝到一個User對象中User user = new User();user.setId(id);user.setNumber(number1);user.setName(name);user.setPassword(password);user.setPhone(phone);user.setRemark(remark);System.out.println('查詢到的用戶' + user);return user; }} catch (SQLException throwables) { throwables.printStackTrace();}return null; }

啟動項目測試

這篇關(guān)于微信demo的文章就到這里了，希望大家可以多多關(guān)注好吧啦網(wǎng)的更多精彩內(nèi)容！