PS:小白一個,剛開始接觸springboot ,記錄一下項目過程以及吾遇到的問題等,第一次寫這個
登陸功能:用戶輸入賬號和密碼,點擊提交按鈕,將數據通過$axios.post發給后端,后端經過和數據庫的驗證,返回一個信息給前端,前端判斷信息是否允許登錄
前端vue:element的form表單組件,很簡單,粘貼復制過來

1 <template>
2 <div class="login" >
3 <el-form :model="ruleForm" status-icon :rules="rules" ref="ruleForm" label-width="auto" class="demo-ruleForm" >
4 <p4>校園二手交易平台登錄系統</p4>
5 <el-form-item label-width="300px" >
6 </el-form-item>
7 <el-form-item label="賬號:" label-width="50px" prop="pass">
8 <el-input clearable name="name" type="username" v-model.trim="ruleForm.pass" autocomplete="off" placeholder="請輸入賬號" style="width: 250px"></el-input>
9 </el-form-item>
10 <el-form-item label="密碼:" label-width="50px" prop="checkPass">
11 <el-input clearable name="word" type="password" v-model.trim="ruleForm.checkPass" autocomplete="off" placeholder="請輸入密碼" style="width: 250px"></el-input>
12 </el-form-item>
13 <el-form-item label-width="95px">
14 <el-button type="primary" @click="login">登錄</el-button>
15 <el-button @click="resetForm">注冊</el-button>
16 </el-form-item>
17 </el-form>
18 </div>
19 </template>
20
21 <script>
22
23 export default {
24 data () {
25 var validatePass = (rule, value, callback) => {
26 if (value === '') {
27 callback(new Error('請輸入賬號'))
28 }
29 }
30 var validatePass2 = (rule, value, callback) => {
31 if (value === '') {
32 callback(new Error('請輸入密碼'))
33 }
34 }
35 return {
36 ruleForm: {
37 pass: '',
38 checkPass: ''
39 },
40 rules: {
41 pass: [
42 { validator: validatePass, trigger: 'blur' }
43 ],
44 checkPass: [
45 { validator: validatePass2, trigger: 'blur' }
46 ]
47 }
48 }
49 },
50 methods: {
51 login () { // 登錄按鈕
52 let formData = new FormData()
53 formData.append('id', this.ruleForm.pass)
54 formData.append('word', this.ruleForm.checkPass)
55 let config = {
56 headers: {
57 'Content-Type': 'multipart/form-data'
58 }
59 }
60 this.$axios.post('http://localhost:8080/login', formData, config
61 )
62 .then(Response => {
63 if (Response.data === 'success') {
64 alert('跳轉')
65 } else {
66 alert(Response.data)
67 }
68 })
69 },
70
71 resetForm () { // 注冊按鈕
72 this.$router.push('/zhuce')
73 }
74 }
75 }
76 </script>
77 <style type="text/css">
78 .login{
79 position: absolute;/*絕對定位*/
80 width: 300px;
81 height: 200px;
82 text-align: center;/*(讓div中的內容居中)*/
83 top: 50%;
84 left: 50%;
85 margin-top: -200px;
86 margin-left: -150px;
87 }
88 </style>
后端DAO層代碼:
1 @Select("SELECT * FROM user WHERE id = #{0} and word = #{1}")
2 List<User> get(String id,String word);
service層代碼:
private userDao userD;
public List<User> get(String id,String word) { //登錄驗證
return userD.get(id, word);
}
controller層代碼:接口為“/login”,數據庫查詢返回的是一個list<user> 對象列表,如果列表size大於0 就說明賬號密碼正確,否則出錯,返回一個信息給前端
1 @RequestMapping(value = "/login",method = RequestMethod.POST)
2 public String login(String id, String word) {
userService userS;
3 System.out.println(id);
4 System.out.println(word);
5 if(userS.get(id, word).size() > 0) {
6 System.out.println("success");
7 return "success";
8 }
9 return "賬號或密碼錯誤!";
10 }
后端各種相關注解沒有貼出來,自行添加。注意前后端分離,要解決跨域問題
我在做這個的時候,有一點把我給坑了,前后端什么都是對的,但是用qq瀏覽器打開的前端頁面(習慣用QQ瀏覽器),怎么登錄都沒反應,后來才發現是瀏覽器的原因,用Chrom 瀏覽器就好了!!!!
結果:登錄成功:

登錄失敗:


