1.准备工作
1.1.前端页面展示
1.2 数据库的建立
我们通过注册页面，考虑如何设计用户表数据库。
- 用户id，userId
- 用户名，唯一，username
- 用户密码，password（包括密码和确认密码ensurePssword【数据库没有该字段】）
- 同时还需要考虑是否需要将图片和用户进行分离
//我考虑的是将其合并在一起
//这样做的好处是直接和userId相对应
//省去了其余的操作
5.需要存储图片名字(picname)
6.需要存储图片地址(path)
-- 数据库
drop database if exists `chatroom`;
create database if not exists `chatroom` character set utf8;
-- 使用数据库
use `chatroom`;DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`userId` INT PRIMARY KEY AUTO_INCREMENT,
`username` varchar(200) NOT NULL,
`password` varchar(200) NOT NULL,
`picname` varchar(200) NOT NULL,
`path` varchar(255) NOT NULL
);2.前端代码
2.1 model
@Data
public class User {private Integer userId;private String username;private String password;private String picname;private String path;
}2.2 service
package com.example.demo.service;import com.example.demo.mapper.UserMapper;
import org.springframework.beans.factory.annotation.Autowired;@org.springframework.stereotype.Service
public class UserService {@Autowiredprivate UserMapper userMapper;public Boolean insertUserInfo(String username,String password,String picname,String path){Integer influncefactor=userMapper.insertUserInfo(username,password,picname,path);if(influncefactor>0){return true;}return false;}}
2.3 controller
package com.example.demo.controller;import com.example.demo.config.AppConfig;
import com.example.demo.config.Result;
import com.example.demo.constant.Constant;
import com.example.demo.mapper.UserMapper;
import com.example.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;import java.io.File;
import java.io.IOException;@RestController
@RequestMapping("/user")
public class UserController {@Autowiredprivate UserService userService;@Autowiredprivate BCryptPasswordEncoder bCryptPasswordEncoder;@RequestMapping("/register")public Result registerUser(@RequestParam MultipartFile file,String username,String password,String ensurePassword){//当旧密码与新密码所输入的一样，且都不为空才会进行后续操作if(!StringUtils.hasLength(username)||!StringUtils.hasLength(password)||!StringUtils.hasLength(ensurePassword)){return Result.fail(Constant.RESULT_CODE_MESSAGENULL,"你所输入的信息为空，违规");}//两个密码必须一致才可以进行后续操作if(!password.equals(ensurePassword)){return Result.fail(Constant.RESULT_CODE_NOTSAMEPASSWORD,"两次密码输入不一致，违规");}String fileName=file.getOriginalFilename();String path = Constant.SAVE_PATH +fileName;File dest=new File(path);//图片可以是同一张图片//直接上传图片try {file.transferTo(dest);} catch (IOException e) {e.printStackTrace();return Result.fail(Constant.RESULT_CODE_UPLOADPICFAIL,"图片上传失败");}//同时要将密码进行加密BCryptString newpassword=bCryptPasswordEncoder.encode(password);//将所输入的数据存入数据库中if(userService.insertUserInfo(username,newpassword,fileName,path)){return Result.success(true);}return Result.fail(Constant.RESULT_CODE_FAIL,"上传数据库失败");}
}3.前端接口测试
每个if语句都需要判断一次
3.1 成功情况
3.2 用户名相同情况
3.3 有一个输入为空的情况
3.4 两次输入的密码不同
4.考虑的问题，图像为空
我们允许图像为空，故需要考虑将本地的文件转为MultipartFile。
数据库存入默认头像
根据文件路径获取 MultipartFile 文件_multipartfile他通过路径获取-CSDN博客
4.1 Controller更改
package com.example.demo.controller;import com.example.demo.config.Method;
import com.example.demo.config.Result;
import com.example.demo.constant.Constant;
import com.example.demo.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;import java.io.File;
import java.io.IOException;@RestController
@RequestMapping("/user")
public class UserController {@Autowiredprivate UserService userService;@Autowiredprivate BCryptPasswordEncoder bCryptPasswordEncoder;@RequestMapping("/register")public Result registerUser(@RequestParam(required = false) MultipartFile file, String username, String password, String ensurePassword) {//当旧密码与新密码所输入的一样，且都不为空才会进行后续操作if (!StringUtils.hasLength(username) || !StringUtils.hasLength(password) || !StringUtils.hasLength(ensurePassword)) {return Result.fail(Constant.RESULT_CODE_MESSAGENULL, "你所输入的信息为空，违规");}//两个密码必须一致才可以进行后续操作if (!password.equals(ensurePassword)) {return Result.fail(Constant.RESULT_CODE_NOTSAMEPASSWORD, "两次密码输入不一致，违规");}//需要查询是否存在相同的username，若否则不能注册，让用户重命名if (!userService.selectByUsername(username)) {return Result.fail(Constant.RESULT_CODE_SAMEUSERNAME, "用户名不能相同，违规");}String fileName;MultipartFile mfile;String path;//如果图片为空，则保存默认的图片if (file == null) {fileName = Constant.PIC;path = Constant.SAVE_PATH +fileName;mfile = Method.getMulFileByPath(path);} else {fileName = file.getOriginalFilename();path = Constant.SAVE_PATH +fileName;mfile=file;}File dest=new File(path);try {mfile.transferTo(dest);} catch (IOException e) {e.printStackTrace();return Result.fail(Constant.RESULT_CODE_UPLOADPICFAIL,"图片上传失败");}//同时要将密码进行加密BCryptString newpassword=bCryptPasswordEncoder.encode(password);//将所输入的数据存入数据库中if(userService.insertUserInfo(username,newpassword,fileName,path)){return Result.success(true);}return Result.fail(Constant.RESULT_CODE_FAIL,"上传数据库失败");}
}
4.2 Method类
package com.example.demo.config;import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItemFactory;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.springframework.web.multipart.MultipartFile;
import org.springframework.web.multipart.commons.CommonsMultipartFile;import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.OutputStream;public class Method {public static MultipartFile getMulFileByPath(String picPath) {FileItem fileItem = createFileItem(picPath);MultipartFile mfile = new CommonsMultipartFile(fileItem);return mfile;}public static FileItem createFileItem(String filePath) {FileItemFactory factory = new DiskFileItemFactory(16, null);String textFieldName = "textField";int num = filePath.lastIndexOf(".");String extFile = filePath.substring(num);FileItem item = factory.createItem(textFieldName, "text/plain", true,"MyFileName" + extFile);File newfile = new File(filePath);int bytesRead = 0;byte[] buffer = new byte[8192];try{FileInputStream fis = new FileInputStream(newfile);OutputStream os = item.getOutputStream();while ((bytesRead = fis.read(buffer, 0, 8192))!= -1){os.write(buffer, 0, bytesRead);}os.close();fis.close();}catch (IOException e){e.printStackTrace();}return item;}}
4.3 前端测试
5.前后端交互
5.1 register.html
</head>
<!DOCTYPE html>
<html lang="en">
<head><meta charset="UTF-8"><title>用户注册界面</title><link rel="stylesheet" href="css/common.css"><link rel="stylesheet" href="css/register.css"><link rel="stylesheet" href="css/upload.css">
</head>
<body><!-- 导航栏 --><div class="nav">网页聊天</div><div class="container"><h1>新用户注册</h1><br><form enctype="multipart/form-data" id="file_upload" class="headForm" onsubmit="return false" action="##"> <div id="test-image-preview" class="iconfont icon-bianjitouxiang"><input type="file" name="test" id="test-image-file" class="fileHead" accept="image/gif, image/jpeg, image/png, image/jpg" multiple="multiple"></div><div class="headMain"><span class="file">上传头像</span><p id="test-file-info" class="fileName"></p></div><br> <div><span class="p">*</span><label for="username">用户名</label><input type="text" name="" id="username" placeholder="" class="register"><br><br><span class="q">*</span><label for="pwd">登录密码</label><input type="password" name="" id="pwd" class="register"><br><br><span class="q">*</span><label for="c_pwd">确认密码</label><input type="password" name="" id="c_pwd" class="register"><br><br><input type="checkbox" class="checkbox" name=""><span style="font-size:15px">我已阅读并同意《用户注册协议》</span><br><br><input type="submit" name="" value="同意以上协议并注册" class="submit" onclick="register(this)"><br><a href="login.html" class="left">返回首页</a><a href="login.html" class="right">开始登录</a></form></div></div>
<script src="https://cdn.bootcss.com/jquery/3.4.1/jquery.min.js"></script>
<script type="text/javascript" src="js/register.js"></script>
<script type="text/javascript" src="js/upload.js"></script>
<script></script>
</body>
</html>5.2 register.js
var checkbox=document.getElementsByClassName('checkbox');
function register(btn){if(checkbox[0].checked==true){submitmessage();}else{alert("请先阅读并同意《用户注册协议》！")}
}function submitmessage(){var formData = new FormData();formData.append('file', $('.fileHead')[0].files[0]);formData.append('username', $("#username").val());formData.append('password', $("#pwd").val());formData.append('ensurePassword', $("#c_pwd").val());var name11 = formData.get("#username");$.ajax({type: 'post',url: '/user/register',processData: false,async: false,contentType: false,cache: false,// 使用同步操作timeout: 50000, //超时时间：50秒data: formData,success: function (result) { // 返回成功// console.log(result);console.log(name11);if(result!=null&&result.status==200){alert("注册账号成功，跳转到登陆页面，开始进行聊天吧！")location.href="login.html"return;}else if(result!=null&&result.status==-10){alert("用户名不能相同，违规");}else if(result!=null&&result.status==-8){alert("两次密码输入不一致，违规");}else if(result!=null&&result.status==-6){alert("你所输入的信息为空，违规");}else{alert("注册错误，请联系工作人员")}},error: function () {alert("接口错误"); // 返回失败}})
}5.3 upload.js
var fileInput = document.getElementById('test-image-file'),//文件框，里面存的是文件，fileHeadinfo = document.getElementById('test-file-info'),//文件名preview = document.getElementById('test-image-preview');//文件框，头像显示界面dataBase64 = '',preview.style.backgroundImage = 'url(../img/个人头像.png)'; //默认显示的图片// 监听change事件:fileInput.addEventListener('change', upImg);// 头像上传逻辑函数
function upImg() {preview.style.backgroundImage = ''; // 清除背景图片if (!fileInput.value) { // 检查文件是否选择:（此时文件中什么都没选择）$('#test-image-preview').addClass('icon-bianjitouxiang');info.innerHTML = '没有选择文件';} else {$('#test-image-preview').removeClass('icon-bianjitouxiang');info.innerHTML = '';//此时上传文件成功}var file = fileInput.files[0]; // 获取File引用var size = file.size;if (size >= 100 * 1024 * 1024) { //判断文件大小info.innerHTML = '文件大于100兆不行!';preview.style.backgroundImage = '';$('#test-image-preview').addClass('icon-bianjitouxiang');return false;}if (file.type !== 'image/jpeg' && file.type !== 'image/png' && file.type !== 'image/gif') { // 获取File信息:info.innerHTML = '不是有效的图片文件!';preview.style.backgroundImage = '';$('#test-image-preview').addClass('icon-bianjitouxiang');return;}// 读取文件:var reader = new FileReader();reader.onload = function (e) {dataBase64 = e.target.result; // 'data:image/jpeg;base64,/9j/4AAQSk...(base64编码)...}' preview.style.backgroundImage = 'url(' + dataBase64 + ') ';preview.style.backgroundRepeat = 'no-repeat';preview.style.backgroundSize = ' 100% 100%';};// 以DataURL的形式读取文件:reader.readAsDataURL(file);// console.log(file);
}5.4 upload.css
.reHead{margin: 15px 4%;
}
.headForm{text-align: center;padding: 40px 0 70px 0;
}
#test-image-preview {position: relative;display: inline-block;width: 100px;height: 100px;border-radius: 50px;background: #F5F5F5;color: #fff;font-size: 60px;text-align: center;line-height: 100px;background-size: contain;background-repeat: no-repeat;background-position: center center;margin-bottom: 26px;
}
.fileHead{position: absolute;width: 100px;height: 100px;right: 0;top: 0;opacity: 0;
}
.content-format {font-size: 12px;font-weight: 400;color: rgba(153, 153, 153, 1);
}
.headMain{height: 40px;
}
.file {position: relative;background: #fff;color: #F39800;font-weight:800;
}
.file input {position: absolute;font-size: 12px;right: 0;top: 0;opacity: 0;
}
.fileName {line-height: 28px;font-size: 12px;font-weight: 400;color: rgba(51, 51, 51, 1);
}
.but{text-align: center;
}
.orangeHead{width: 40%;height: 40px;background: #f60;border: none;
}
.orangeHead a{color: #fff;
}5.5 register.css
body{background: url("../img/coolgirl.jpg");background-size:100% 100%;background-attachment: fixed;
}.container{position: absolute;top: 50%;left: 50%;transform: translate(-50%,-50%);}img{width: 4rem;height: 4rem;margin-left: 50%;transform: translateX(-50%);margin-top: 0.853rem;border-radius: 50%;}#js_logo_img{width: 4rem;height: 4rem;position: absolute;left: 50%;transform: translateX(-50%);top: 30%;opacity: 0;}h2{color: #000066;font-size: 0.853rem;text-align: center;margin: 0;}form{width: 450px;margin: 0 auto;background: #FFF;border-radius: 15px;position: relative;}h1{font-size: 28px;text-align: center;color: #FFF;}.p{color: red;margin-left: 33px;display: inline-block;/* 不占单独一行的块级元素 */}label{font-size: 18px;font-weight: bold;}.register{height: 35px;width: 300px;}.q{color:red;margin-left:17px;display:inline-block;}.checkbox{margin-left: 100px;display: inline-block;width: 15px;height: 15px;}.submit{border-radius: 7px;margin-left: 150px;height: 35px;width: 150px;background-color: #000;border: none;display: block;padding: 0;color: #FFF;font-weight: bold;cursor: pointer;}a{text-decoration: none;font-weight: bold;}.left,.right{position: absolute;bottom: 20px;}.left{left: 20px;}.right{right: 20px;}5.6 common.css
/* 放置页面的公共样式 *//* 去除浏览器默认样式 */
* {margin: 0;padding: 0;box-sizing: border-box;
}/* 设定页面高度 */
html, body {height: 100%;
}/* 设定导航栏的样式 */
.nav {height: 50px;background-color: black;color: rgb(255, 255, 255);/* 使用弹性布局, 让导航栏内部的元素, 垂直方向居中 */display: flex;align-items: center;/* 让里面的元素距离左侧边框, 有点间隙 */padding-left: 20px;
}5.7 测试
注册成功！！！
![[MRCTF2020]PixelShooter](https://img-blog.csdnimg.cn/direct/5c0eb4f93e6a405f8408b2c8762ac683.png)
