引言
在现代Web应用程序开发中，用户认证和数据交互是至关重要的功能。本文将介绍如何使用ElementUI、axios和解决跨域问题来构建一个完善的用户认证与数据交互系统。我们将分别探讨ElementUI完成登录注册、axios之get请求、axios之post请求以及跨域问题的解决方案。
1.ElementUI完成登录注册
在构建一个Web应用程序时，用户登录和注册是必不可少的功能。ElementUI是一个流行的Vue.js组件库，提供了丰富的UI组件和样式，使得开发者可以轻松地构建出漂亮且易用的登录和注册页面。本节将介绍如何使用ElementUI来完成登录和注册功能，并展示一些常用的验证和表单处理技巧。
1. 登录页面设计与实现
main.js
// The Vue build version to load with the `import` command // (runtime-only or standalone) has been set in webpack.base.conf with an alias. import Vue from 'vue' // 新添加1 import ElementUI from 'element-ui' // 新添加2，避免后期打包样式不同，要放在import App from './App';之前 import 'element-ui/lib/theme-chalk/index.css' import App from './App' import router from './router' // 新添加3 Vue.use(ElementUI) Vue.config.productionTip = false /* eslint-disable no-new */ import axios from '@/api/http' import VueAxios from 'vue-axios' Vue.use(VueAxios,axios) new Vue({ el: '#app', router, components: { App }, template: '<App/>' }) • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25
// 新添加3
Vue.use(ElementUI)
Vue.config.productionTip = false
在app后面添加
重要的事情说三遍：在指定位置!!!在指定位置!!!在指定位置!!!~~~添加三行代码
配置路由
import Vue from 'vue' import Router from 'vue-router' import HelloWorld from '@/components/HelloWorld' import Login from '@/views/Login' import Register from '@/views/Register' Vue.use(Router) export default new Router({ routes: [ { path: '/', name: 'Login', component: Login }, { path: '/Register', name: 'Register', component: Register } ] }) • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22
登录界面
<template> <div class="login-wrap"> <el-form class="login-container"> <h1 class="title">用户登录</h1> <el-form-item label=""> <el-input type="text" v-model="username" placeholder="登录账号" autocomplete="off"></el-input> </el-form-item> <el-form-item label=""> <el-input type="password" v-model="password" placeholder="登录密码" autocomplete="off"></el-input> </el-form-item> <el-form-item> <el-button type="primary" style="width:100%;" @click="doSubmit()">提交</el-button> </el-form-item> <el-row style="text-align: center;margin-top:-10px"> <el-link type="primary">忘记密码</el-link> <el-link type="primary" @click="gotoRegister()">用户注册</el-link> </el-row> </el-form> </div> </template> <script> // import axios from 'axios' // import qs from 'qs' export default { name: 'Login', data() { return { username: '', password: '' } }, methods: { gotoRegister() { this.$router.push('/Register'); }, doSubmit() { let url = this.axios.urls.SYSTEM_USER_DOLOGIN; let params = { username: this.username, password: this.password } this.axios.post(url, params).then(r => { console.log(r) if (r.data.success) { this.$message({ type: 'success', message: r.data.msg }); this.$router.push('/Register'); }else{ console.log(r) this.$message(r.data.msg) } }).catch(e => { }) } } } </script> <style scoped> .login-wrap { box-sizing: border-box; width: 100%; height: 100%; padding-top: 10%; background-image: url(data:image/svg+xml;base64,<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<svg width="1361px" height="609px" viewBox="0 0 1361 609" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
    <!-- Generator: Sketch 46.2 (44496) - http://www.bohemiancoding.com/sketch -->
    <title>Group 21</title>
    <desc>Created with Sketch.</desc>
    <defs></defs>
    <g id="Ant-Design-Pro-3.0" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">
        <g id="账户密码登录-校验" transform="translate(-79.000000, -82.000000)">
            <g id="Group-21" transform="translate(77.000000, 73.000000)">
                <g id="Group-18" opacity="0.8" transform="translate(74.901416, 569.699158) rotate(-7.000000) translate(-74.901416, -569.699158) translate(4.901416, 525.199158)">
                    <ellipse id="Oval-11" fill="#CFDAE6" opacity="0.25" cx="63.5748792" cy="32.468367" rx="21.7830479" ry="21.766008"></ellipse>
                    <ellipse id="Oval-3" fill="#CFDAE6" opacity="0.599999964" cx="5.98746479" cy="13.8668601" rx="5.2173913" ry="5.21330997"></ellipse>
                    <path d="M38.1354514,88.3520215 C43.8984227,88.3520215 48.570234,83.6838647 48.570234,77.9254015 C48.570234,72.1669383 43.8984227,67.4987816 38.1354514,67.4987816 C32.3724801,67.4987816 27.7006688,72.1669383 27.7006688,77.9254015 C27.7006688,83.6838647 32.3724801,88.3520215 38.1354514,88.3520215 Z" id="Oval-3-Copy" fill="#CFDAE6" opacity="0.45"></path>
                    <path d="M64.2775582,33.1704963 L119.185836,16.5654915" id="Path-12" stroke="#CFDAE6" stroke-width="1.73913043" stroke-linecap="round" stroke-linejoin="round"></path>
                    <path d="M42.1431708,26.5002681 L7.71190162,14.5640702" id="Path-16" stroke="#E0B4B7" stroke-width="0.702678964" opacity="0.7" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="1.405357899873153,2.108036953469981"></path>
                    <path d="M63.9262187,33.521561 L43.6721326,69.3250951" id="Path-15" stroke="#BACAD9" stroke-width="0.702678964" stroke-linecap="round" stroke-linejoin="round" stroke-dasharray="1.405357899873153,2.108036953469981"></path>
                    <g id="Group-17" transform="translate(126.850922, 13.543654) rotate(30.000000) translate(-126.850922, -13.543654) translate(117.285705, 4.381889)" fill="#CFDAE6">
                        <ellipse id="Oval-4" opacity="0.45" cx="9.13482653" cy="9.12768076" rx="9.13482653" ry="9.12768076"></ellipse>
                        <path d="M18.2696531,18.2553615 C18.2696531,13.2142826 14.1798519,9.12768076 9.13482653,9.12768076 C4.08980114,9.12768076 0,13.2142826 0,18.2553615 L18.2696531,18.2553615 Z" id="Oval-4" transform="translate(9.134827, 13.691521) scale(-1, -1) translate(-9.134827, -13.691521) "></path>
                    </g>
                </g>
                <g id="Group-14" transform="translate(216.294700, 123.725600) rotate(-5.000000) translate(-216.294700, -123.725600) translate(106.294700, 35.225600)">
                    <ellipse id="Oval-2" fill="#CFDAE6" opacity="0.25" cx="29.1176471" cy="29.1402439" rx="29.1176471" ry="29.1402439"></ellipse>
                    <ellipse id="Oval-2" fill="#CFDAE6" opacity="0.3" cx="29.1176471" cy="29.1402439" rx="21.5686275" ry="21.5853659"></ellipse>
                    <ellipse id="Oval-2-Copy" stroke="#CFDAE6" opacity="0.4" cx="179.019608" cy="138.146341" rx="23.7254902" ry="23.7439024"></ellipse>
                    <ellipse id="Oval-2" fill="#BACAD9" opacity="0.5" cx="29.1176471" cy="29.1402439" rx="10.7843137" ry="10.7926829"></ellipse>
                    <path d="M29.1176471,39.9329268 L29.1176471,18.347561 C23.1616351,18.347561 18.3333333,23.1796097 18.3333333,29.1402439 C18.3333333,35.1008781 23.1616351,39.9329268 29.1176471,39.9329268 Z" id="Oval-2" fill="#BACAD9"></path>
                    <g id="Group-9" opacity="0.45" transform="translate(172.000000, 131.000000)" fill="#E6A1A6">
                        <ellipse id="Oval-2-Copy-2" cx="7.01960784" cy="7.14634146" rx="6.47058824" ry="6.47560976"></ellipse>
                        <path d="M0.549019608,13.6219512 C4.12262681,13.6219512 7.01960784,10.722722 7.01960784,7.14634146 C7.01960784,3.56996095 4.12262681,0.670731707 0.549019608,0.670731707 L0.549019608,13.6219512 Z" id="Oval-2-Copy-2" transform="translate(3.784314, 7.146341) scale(-1, 1) translate(-3.784314, -7.146341) "></path>
                    </g>
                    <ellipse id="Oval-10" fill="#CFDAE6" cx="218.382353" cy="138.685976" rx="1.61764706" ry="1.61890244"></ellipse>
                    <ellipse id="Oval-10-Copy-2" fill="#E0B4B7" opacity="0.35" cx="179.558824" cy="175.381098" rx="1.61764706" ry="1.61890244"></ellipse>
                    <ellipse id="Oval-10-Copy" fill="#E0B4B7" opacity="0.35" cx="180.098039" cy="102.530488" rx="2.15686275" ry="2.15853659"></ellipse>
                    <path d="M28.9985381,29.9671598 L171.151018,132.876024" id="Path-11" stroke="#CFDAE6" opacity="0.8"></path>
                </g>
                <g id="Group-10" opacity="0.799999952" transform="translate(1054.100635, 36.659317) rotate(-11.000000) translate(-1054.100635, -36.659317) translate(1026.600635, 4.659317)">
                    <ellipse id="Oval-7" stroke="#CFDAE6" stroke-width="0.941176471" cx="43.8135593" cy="32" rx="11.1864407" ry="11.2941176"></ellipse>
                    <g id="Group-12" transform="translate(34.596774, 23.111111)" fill="#BACAD9">
                        <ellipse id="Oval-7" opacity="0.45" cx="9.18534718" cy="8.88888889" rx="8.47457627" ry="8.55614973"></ellipse>
                        <path d="M9.18534718,17.4450386 C13.8657264,17.4450386 17.6599235,13.6143199 17.6599235,8.88888889 C17.6599235,4.16345787 13.8657264,0.332739156 9.18534718,0.332739156 L9.18534718,17.4450386 Z" id="Oval-7"></path>
                    </g>
                    <path d="M34.6597385,24.809694 L5.71666084,4.76878945" id="Path-2" stroke="#CFDAE6" stroke-width="0.941176471"></path>
                    <ellipse id="Oval" stroke="#CFDAE6" stroke-width="0.941176471" cx="3.26271186" cy="3.29411765" rx="3.26271186" ry="3.29411765"></ellipse>
                    <ellipse id="Oval-Copy" fill="#F7E1AD" cx="2.79661017" cy="61.1764706" rx="2.79661017" ry="2.82352941"></ellipse>
                    <path d="M34.6312443,39.2922712 L5.06366663,59.785082" id="Path-10" stroke="#CFDAE6" stroke-width="0.941176471"></path>
                </g>
                <g id="Group-19" opacity="0.33" transform="translate(1282.537219, 446.502867) rotate(-10.000000) translate(-1282.537219, -446.502867) translate(1142.537219, 327.502867)">
                    <g id="Group-17" transform="translate(141.333539, 104.502742) rotate(275.000000) translate(-141.333539, -104.502742) translate(129.333539, 92.502742)" fill="#BACAD9">
                        <circle id="Oval-4" opacity="0.45" cx="11.6666667" cy="11.6666667" r="11.6666667"></circle>
                        <path d="M23.3333333,23.3333333 C23.3333333,16.8900113 18.1099887,11.6666667 11.6666667,11.6666667 C5.22334459,11.6666667 0,16.8900113 0,23.3333333 L23.3333333,23.3333333 Z" id="Oval-4" transform="translate(11.666667, 17.500000) scale(-1, -1) translate(-11.666667, -17.500000) "></path>
                    </g>
                    <circle id="Oval-5-Copy-6" fill="#CFDAE6" cx="201.833333" cy="87.5" r="5.83333333"></circle>
                    <path d="M143.5,88.8126685 L155.070501,17.6038544" id="Path-17" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <path d="M17.5,37.3333333 L127.466252,97.6449735" id="Path-18" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <polyline id="Path-19" stroke="#CFDAE6" stroke-width="1.16666667" points="143.902597 120.302281 174.935455 231.571342 38.5 147.510847 126.366941 110.833333"></polyline>
                    <path d="M159.833333,99.7453842 L195.416667,89.25" id="Path-20" stroke="#E0B4B7" stroke-width="1.16666667" opacity="0.6"></path>
                    <path d="M205.333333,82.1372105 L238.719406,36.1666667" id="Path-24" stroke="#BACAD9" stroke-width="1.16666667"></path>
                    <path d="M266.723424,132.231988 L207.083333,90.4166667" id="Path-25" stroke="#CFDAE6" stroke-width="1.16666667"></path>
                    <circle id="Oval-5" fill="#C1D1E0" cx="156.916667" cy="8.75" r="8.75"></circle>
                    <circle id="Oval-5-Copy-3" fill="#C1D1E0" cx="39.0833333" cy="148.75" r="5.25"></circle>
                    <circle id="Oval-5-Copy-2" fill-opacity="0.6" fill="#D1DEED" cx="8.75" cy="33.25" r="8.75"></circle>
                    <circle id="Oval-5-Copy-4" fill-opacity="0.6" fill="#D1DEED" cx="243.833333" cy="30.3333333" r="5.83333333"></circle>
                    <circle id="Oval-5-Copy-5" fill="#E0B4B7" cx="175.583333" cy="232.75" r="5.25"></circle>
                </g>
            </g>
        </g>
    </g>
</svg>); /* background-color: #112346; */ background-repeat: no-repeat; background-position: center right; background-size: 100%; } .login-container { border-radius: 10px; margin: 0px auto; width: 350px; padding: 30px 35px 15px 35px; background: #fff; border: 1px solid #eaeaea; text-align: left; box-shadow: 0 0 20px 2px rgba(0, 0, 0, 0.1); } .title { margin: 0px auto 40px auto; text-align: center; color: #505458; } </style> • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 • 29 • 30 • 31 • 32 • 33 • 34 • 35 • 36 • 37 • 38 • 39 • 40 • 41 • 42 • 43 • 44 • 45 • 46 • 47 • 48 • 49 • 50 • 51 • 52 • 53 • 54 • 55 • 56 • 57 • 58 • 59 • 60 • 61 • 62 • 63 • 64 • 65 • 66 • 67 • 68 • 69 • 70 • 71 • 72 • 73 • 74 • 75 • 76 • 77 • 78 • 79 • 80 • 81 • 82 • 83 • 84 • 85 • 86 • 87 • 88 • 89 • 90 • 91 • 92 • 93 • 94 • 95 • 96
App.vue样式
<style> html, body { width: 100%; height: 100%; box-sizing: border-box; padding: 0px; margin: 0px; } #app { font-family: "Avenir", Helvetica, Arial, sans-serif; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; color: #2c3e50; widows: 100%; height: 100%; } </style> • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18
2. 注册页面设计与实现
注册页面与登录页面类似，也需要一个表单来接收用户输入的注册信息，并提供注册按钮来提交表单。在注册页面中，我们还可以使用ElementUI的其他组件，如下拉框、日期选择器等，来提供更多的注册选项。同样，我们也可以利用ElementUI的表单验证功能来确保用户输入的合法性。
<template> <div class="register-container"> <div class="register-card"> <h2 class="register-title">注册</h2> <form @submit.prevent="register" class="register-form"> <div class="form-group"> <label for="username" class="register-label">用户名:</label> <input type="text" id="username" v-model="username" required class="register-input"> </div> <div class="form-group"> <label for="password" class="register-label">密码:</label> <input type="password" id="password" v-model="password" required class="register-input"> </div> <div class="form-group"> <label for="password" class="register-label">编号:</label> <input type="password" id="id" v-model="id" required class="register-input"> </div> <button type="submit" class="register-button">注册</button> </form> <div class="login-link"> <span>已有账号？</span> <el-link type="primary" @click="gotoLogin()">用户登录</el-link> </div> </div> </div> </template> <style> .register-container { display: flex; flex-direction: column; align-items: center; justify-content: center; height: 100vh; background-color: #f5f5f5; } .register-card { display: flex; flex-direction: column; align-items: center; background-color: #fff; padding: 40px; border-radius: 4px; box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1); } .register-title { font-size: 24px; color: #333; margin-bottom: 20px; } .register-form { display: flex; flex-direction: column; align-items: center; } .form-group { margin-bottom: 20px; } .register-label { font-size: 16px; color: #333; margin-bottom: 10px; } .register-input { padding: 8px; border: 1px solid #ccc; border-radius: 4px; width: 200px; } .register-button { padding: 10px 20px; background-color: #ff6700; color: #fff; border: none; border-radius: 4px; cursor: pointer; } .login-link { margin-top: 20px; display: flex; align-items: center; } .login-link span { color: #555; } .login-button { margin-left: 5px; color: #007bff; text-decoration: none; } </style> <script> export default { data() { return { username: '', password: '', id:'' }; }, methods: { register() { let url = this.axios.urls.SYSTEM_USER_DOREG; let params = { username: this.username, password: this.password, id:this.id } console.log(url) this.axios.post(url, params).then(r => { console.log(r) if (r.data.success) { this.$message({ type: 'success', message: r.data.msg }); }else{ console.log(r) this.$message(r.data.msg) } }).catch(e => { }) }, gotoLogin(){ this.$router.push('/'); } } }; </script> • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 • 29 • 30 • 31 • 32 • 33 • 34 • 35 • 36 • 37 • 38 • 39 • 40 • 41 • 42 • 43 • 44 • 45 • 46 • 47 • 48 • 49 • 50 • 51 • 52 • 53 • 54 • 55 • 56 • 57 • 58 • 59 • 60 • 61 • 62 • 63 • 64 • 65 • 66 • 67 • 68 • 69 • 70 • 71 • 72 • 73 • 74 • 75 • 76 • 77 • 78 • 79 • 80 • 81 • 82 • 83 • 84 • 85 • 86 • 87 • 88 • 89 • 90 • 91 • 92 • 93 • 94 • 95 • 96 • 97 • 98 • 99 • 100 • 101 • 102 • 103 • 104 • 105 • 106 • 107 • 108 • 109 • 110 • 111 • 112 • 113 • 114 • 115 • 116 • 117 • 118 • 119 • 120 • 121 • 122 • 123 • 124 • 125 • 126 • 127 • 128 • 129 • 130 • 131 • 132 • 133 • 134 • 135 • 136 • 137 • 138 • 139 • 140 • 141 • 142 • 143
后台代码
package com.zking.ssm.controller; import com.zking.ssm.model.User; import com.zking.ssm.service.IUserService; import com.zking.ssm.util.JsonResponseBody; import com.zking.ssm.util.PageBean; import com.zking.ssm.vo.UserVo; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.util.HashMap; import java.util.List; import java.util.Map; import com.zking.ssm.jwt.*; @Controller @RequestMapping("/user") public class UserController { @Autowired private IUserService userService; @RequestMapping("/userLogin") @ResponseBody public JsonResponseBody<?> userLogin(UserVo userVo, HttpServletResponse response){ if(userVo.getUsername().equals("admin")&&userVo.getPassword().equals("123")){ //私有要求claim // Map<String,Object> json=new HashMap<String,Object>(); // json.put("username", userVo.getUsername()); //生成JWT，并设置到response响应头中 // String jwt=JwtUtils.createJwt(json, JwtUtils.JWT_WEB_TTL); // response.setHeader(JwtUtils.JWT_HEADER_KEY, jwt); return new JsonResponseBody<>("用户登陆成功！",true,0,null); }else{ return new JsonResponseBody<>("用户名或密码错误！",false,0,null); } } @RequestMapping("/userRegister") @ResponseBody public JsonResponseBody<?> Register(User user, HttpServletResponse response) { if (user.getUsername() != null && user.getPassword() != null && user != null) { int n = userService.insertSelective(user); if (n > 0) { return new JsonResponseBody<>("注册成功！", true, 0, null); } } return new JsonResponseBody<>("用户名或密码错误！", false, 0, null); } @RequestMapping("/queryUserPager") @ResponseBody public JsonResponseBody<List<Map<String,Object>>> queryUserPager(UserVo userVo, HttpServletRequest request){ try { PageBean pageBean=new PageBean(); pageBean.setRequest(request); List<Map<String, Object>> users = userService.queryUserPager(userVo, pageBean); return new JsonResponseBody<>("OK",true,pageBean.getTotal(),users); } catch (Exception e) { e.printStackTrace(); return new JsonResponseBody<>("分页查询用户信息失败！",false,0,null); } } } • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 • 29 • 30 • 31 • 32 • 33 • 34 • 35 • 36 • 37 • 38 • 39 • 40 • 41 • 42 • 43 • 44 • 45 • 46 • 47 • 48 • 49 • 50 • 51 • 52 • 53 • 54 • 55 • 56 • 57 • 58 • 59 • 60 • 61 • 62 • 63 • 64 • 65 • 66 • 67 • 68 • 69 • 70 • 71 • 72 • 73
在现代Web应用程序中，与后端服务器进行数据交互是非常常见的需求。axios是一个基于Promise的HTTP客户端，可以在浏览器和Node.js中发送HTTP请求。本节将介绍如何使用axios发送GET请求，并展示一些常用的请求参数配置和响应处理技巧。
项目下输入下面代码回车下载
npm i axios -S
doSubmit() { let url = "http://localhost:8080/user/userLogin" let params = { username: this.username, password: this.password } axios.get(url, { params: params }).then(r => { console.log(r) if (r.data.success) { this.$message({ type: 'success', message: r.data.msg }); this.$router.push('/Register'); }else{ console.log(r) this.$message(r.data.msg) } }).catch(e => { }) } • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25
3.axios之post请求
除了GET请求，POST请求也是常用的数据交互方式之一。POST请求通常用于向服务器提交数据，如用户注册、表单提交等。本节将介绍如何使用axios发送POST请求，并展示一些常用的请求参数配置和响应处理技巧。
项目下输入下面代码回车下载
npm install qs -S
npm i vue-axios -S
doSubmit() { let url = this.axios.urls.SYSTEM_USER_DOLOGIN; let params = { username: this.username, password: this.password } this.axios.post(url, params).then(r => { console.log(r) if (r.data.success) { this.$message({ type: 'success', message: r.data.msg }); this.$router.push('/Register'); }else{ console.log(r) this.$message(r.data.msg) } }).catch(e => { }) } • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22
action.js
/** * 对后台请求的地址的封装，URL格式如下： * 模块名_实体名_操作 */ export default { 'SERVER': 'http://localhost:8080', //服务器 'SYSTEM_USER_DOLOGIN': '/user/userLogin', //登陆 'SYSTEM_USER_DOREG': '/user/userRegister', //注册 'getFullPath': k => { //获得请求的完整地址，用于mockjs测试时使用 return this.SERVER + this[k]; } } • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13
http.js
/** * 对后台请求的地址的封装，URL格式如下： * 模块名_实体名_操作 */ export default { 'SERVER': 'http://localhost:8080', //服务器 'SYSTEM_USER_DOLOGIN': '/user/userLogin', //登陆 'SYSTEM_USER_DOREG': '/userAction.action', //注册 'getFullPath': k => { //获得请求的完整地址，用于mockjs测试时使用 return this.SERVER + this[k]; } } • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13
4.跨域问题的解决方案
在前后端分离的开发模式中，前端代码通常运行在一个独立的域名或端口上，而后端API则运行在另一个域名或端口上。由于浏览器的同源策略限制，跨域请求会受到限制。本节将介绍一些常用的跨域解决方案，如JSONP、CORS等，并展示如何使用axios来处理跨域请求。
web.xml配置过滤器
<!--CrosFilter跨域过滤器--> <filter> <filter-name>corsFilter</filter-name> <filter-class>com.zking.ssm.util.CorsFilter2</filter-class> </filter> <filter-mapping> <filter-name>corsFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9
过滤器
package com.zking.ssm.util; import java.io.IOException; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletResponse; /** * 配置tomcat允许跨域访问 * * @author Administrator * */ public class CorsFilter2 implements Filter { @Override public void init(FilterConfig filterConfig) throws ServletException { } @Override public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException { HttpServletResponse httpResponse = (HttpServletResponse) servletResponse; // Access-Control-Allow-Origin就是我们需要设置的域名 // Access-Control-Allow-Headers跨域允许包含的头。 // Access-Control-Allow-Methods是允许的请求方式 httpResponse.setHeader("Access-Control-Allow-Origin", "*");// *,任何域名 httpResponse.setHeader("Access-Control-Allow-Headers", "responseType,Origin, X-Requested-With, Content-Type, Accept"); httpResponse.setHeader("Access-Control-Allow-Methods", "POST, GET, PUT, DELETE"); //允许客户端处理一个新的响应头jwt //httpResponse.setHeader("Access-Control-Expose-Headers", "jwt,Content-Disposition"); filterChain.doFilter(servletRequest, servletResponse); } @Override public void destroy() { } } • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 • 22 • 23 • 24 • 25 • 26 • 27 • 28 • 29 • 30 • 31 • 32 • 33 • 34 • 35 • 36 • 37 • 38 • 39 • 40 • 41 • 42 • 43 • 44 • 45 • 46
5.总结
本文介绍了如何使用ElementUI、axios和解决跨域问题来构建一个完善的用户认证与数据交互系统。我们分别探讨了ElementUI完成登录注册、axios之get请求、axios之post请求以及跨域问题的解决方案。通过学习本文，您将掌握一些高级的前端技术实践，能够更好地应对现代Web应用程序开发中的挑战。希望本文对您有所帮助，谢谢阅读！
