天猫商城入口,如何搭建 seo网站,网站移动端就是app吗,中铁三局招聘事件目录 引言1.ElementUI完成登录注册1. 登录页面设计与实现2. 注册页面设计与实现 2.axios之get请求3.axios之post请求4.跨域问题的解决方案5.总结 引言
在现代Web应用程序开发中#xff0c;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… 目录 引言1.ElementUI完成登录注册1. 登录页面设计与实现2. 注册页面设计与实现 2.axios之get请求3.axios之post请求4.跨域问题的解决方案5.总结 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-axiosVue.use(VueAxios,axios)
new Vue({el: #app,router,components: { App },template: App/
})
// 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}]
})
登录界面 templatediv classlogin-wrapel-form classlogin-containerh1 classtitle用户登录/h1el-form-item labelel-input typetext v-modelusername placeholder登录账号 autocompleteoff/el-input/el-form-itemel-form-item labelel-input typepassword v-modelpassword placeholder登录密码 autocompleteoff/el-input/el-form-itemel-form-itemel-button typeprimary stylewidth:100%; clickdoSubmit()提交/el-button/el-form-itemel-row styletext-align: center;margin-top:-10pxel-link typeprimary忘记密码/el-linkel-link typeprimary clickgotoRegister()用户注册/el-link/el-row/el-form/div/templatescript// import axios from axios// import qs from qsexport 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 {})}}}/scriptstyle scoped.login-wrap {box-sizing: border-box;width: 100%;height: 100%;padding-top: 10%;background-image: 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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
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%;
}
/style2. 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。
templatediv classregister-containerdiv classregister-cardh2 classregister-title注册/h2form submit.preventregister classregister-formdiv classform-grouplabel forusername classregister-label用户名:/labelinput typetext idusername v-modelusername required classregister-input/divdiv classform-grouplabel forpassword classregister-label密码:/labelinput typepassword idpassword v-modelpassword required classregister-input/divdiv classform-grouplabel forpassword classregister-label编号:/labelinput typepassword idid v-modelid required classregister-input/divbutton typesubmit classregister-button注册/button/formdiv classlogin-linkspan已有账号/spanel-link typeprimary clickgotoLogin()用户登录/el-link/div/div/div
/templatestyle
.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;
}
/stylescript
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
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 {Autowiredprivate IUserService userService;RequestMapping(/userLogin)ResponseBodypublic JsonResponseBody? userLogin(UserVo userVo, HttpServletResponse response){if(userVo.getUsername().equals(admin)userVo.getPassword().equals(123)){//私有要求claim
// MapString,Object jsonnew HashMapString,Object();
// json.put(username, userVo.getUsername());//生成JWT并设置到response响应头中
// String jwtJwtUtils.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)ResponseBodypublic 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)ResponseBodypublic JsonResponseBodyListMapString,ObjectqueryUserPager(UserVo userVo, HttpServletRequest request){try {PageBean pageBeannew PageBean();pageBean.setRequest(request);ListMapString, 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);}}
}
2.axios之get请求
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/userLoginlet 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 {})}
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 {})}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];}
}
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];}
}
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--filterfilter-namecorsFilter/filter-namefilter-classcom.zking.ssm.util.CorsFilter2/filter-class/filterfilter-mappingfilter-namecorsFilter/filter-nameurl-pattern/*/url-pattern/filter-mapping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 {Overridepublic void init(FilterConfig filterConfig) throws ServletException {}Overridepublic 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);}Overridepublic void destroy() {}
}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
