济南1951年建站,wordpress跳转移动端模板,视频制作教程自学,企业所得税怎么算2023年#x1f3ac; 艳艳耶✌️#xff1a;个人主页 #x1f525; 个人专栏 #xff1a;《Spring与Mybatis集成整合》 ⛺️ 生活的理想#xff0c;为了不断更新自己 ! 目录
编辑
1、前言
1.1.什么是ELementUI
2、完成登陆注册前端页面
2.1环境搭建
运行… 艳艳耶✌️个人主页 个人专栏 《Spring与Mybatis集成整合》 ⛺️ 生活的理想为了不断更新自己 ! 目录
编辑
1、前言
1.1.什么是ELementUI
2、完成登陆注册前端页面
2.1环境搭建
运行项目
使用命令添加Element-UI模块
测试ELementUI
2.2. 登录页面搭建
3、数据交互
3.1.安装相关模块
安装模块 引用模块
3.2.axios的get请求 3.3.axios的post请求
3.注册功能
4、跨域的概述
4.1.跨域是什么
4.2.怎么解决跨域问题 1、前言 1.1.什么是ELementUI Element 是一款基于 Vue.js 的开源 UI 组件库旨在帮助开发者构建出现代化的 Web 应用程序界面。它提供了丰富多样的可重用组件并支持自定义主题和样式使开发者能够快速搭建出具有良好用户体验的界面。 Element 是一个功能强大的前端 UI 组件库通过提供丰富的组件和灵活的定制选项使开发者能够快速构建现代化的 Web 应用程序界面。 2、完成登陆注册前端页面
2.1环境搭建
首先我们准备一个SPA项目
如果不会的话可以参照我之前写的博客
【Vue】如何搭建SPA项目--详细教程https://blog.csdn.net/2301_76988707/article/details/133146622
运行项目
在SAP项目的根目录输入cmd后在cmd窗口输入npm run dev 输入最后那个网址结果就出来了。 使用命令添加Element-UI模块
npm install element-ui -S
先把项目终止再进行下载中途不可断开。 下载完成后项目里就会看该依赖 测试ELementUI
导入ELement的css与js到main.js中
// 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
// 新添加3
Vue.use(ElementUI) 随便找个样式复制到SPA项目中进行运行查看是否能运行。
ELementUI官网https://element.eleme.cn/#/zh-CN/component/button 2.2. 登录页面搭建
在项目中的src目录下创建views目录该目录用于存放vue组件。
在views目录下创建一个Login.vue组件登入页面的显示代码如下:
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 clickRegister()用户注册/el-link/el-row/el-form/div
/templatescript
export default {name: Login,data () {return {username:,password:,msg: 嗨嗨嗨}},methods:{Register(){this.$router.push(/Register);}}
}
/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 修改 App.vue 组件的css样式进行登入页面的效果美化将以下代码覆盖到style标签中
templatediv idapp!-- img src./assets/logo.png --!-- el-rowel-button默认按钮/el-buttonel-button typeprimary主要按钮/el-buttonel-button typesuccess成功按钮/el-buttonel-button typeinfo信息按钮/el-buttonel-button typewarning警告按钮/el-buttonel-button typedanger危险按钮/el-button/el-row --router-view//div
/templatescript
export default {name: App
}
/scriptstyle
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然后在项目路径下面输入以下命令开启项目开启命令 : npm run pev
展示图 3、数据交互
3.1.安装相关模块
安装模块
在maven项目中需要前后端请求的话需要在maven项目中安装ajax的模块
在前端的spa项目中在本地的根本路径下WinR输入cmd打开cmd窗口。 输入以下命令安装所需模块 : npm i axios -S npm i qs-S npm i axios -S npm i qs-S axios是vue2提倡使用的轻量版的ajax。它是基于promise的HTTP库。它会从浏览器中创建XMLHttpRequests与Vue配合使用非常好。
冗余代码的模块
前端的代码会有请求路径及引入模块等等的很多冗余代码。
为解决这一问题我们只需下载一个vue-axios的引用整合模块。
在前端的spa项目中在本地的根本路径下WinR输入cmd打开cmd窗口。
输入以下命令安装所需模块 :
npm i vue-axios -S
查看模块
在前端项目的package.json的文件中看到以下就说明安装模块已经完成 引用模块
安装后就在项目中进行引用添加axios的全局配置创建一个actio.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/ssm, //服务器地址SYSTEM_USER_DOLOGIN: /user/userLogin, //登陆请求SYSTEM_USER_DOREG: //user/userRegister, //注册请求getFullPath: k { //获得请求的完整地址用于mockjs测试时使用return this.SERVER this[k];}
}action.js针对后台请求接口的封装定义和http.js针对axios的全局配置两个文件。
创建http.js用于vue项目对axios的全局配置
/*** vue项目对axios的全局配置*/
import axios from axios
import qs from qs//引入action模块并添加至axios的类属性urls上
import action from /api/action
axios.urls action// axios默认配置
axios.defaults.timeout 10000; // 超时时间
// axios.defaults.baseURL http://localhost:8080/j2ee15; // 默认地址
axios.defaults.baseURL action.SERVER;//整理数据
// 只适用于 POST,PUT,PATCHtransformRequest 允许在向服务器发送前修改请求数据
axios.defaults.transformRequest function(data) {data qs.stringify(data);return data;
};// 请求拦截器
axios.interceptors.request.use(function(config) {return config;
}, function(error) {return Promise.reject(error);
});// 响应拦截器
axios.interceptors.response.use(function(response) {return response;
}, function(error) {return Promise.reject(error);
});// // 路由请求拦截
// // http request 拦截器
// axios.interceptors.request.use(
// config {
// //config.data JSON.stringify(config.data);
// //config.headers[Content-Type] application/json;charsetUTF-8;
// //config.headers[Token] abcxyz;
// //判断是否存在ticket如果存在的话则每个http header都加上ticket
// // if (cookie.get(token)) {
// // //用户每次操作都将cookie设置成2小时
// // cookie.set(token, cookie.get(token), 1 / 12)
// // cookie.set(name, cookie.get(name), 1 / 12)
// // config.headers.token cookie.get(token);
// // config.headers.name cookie.get(name);
// // }
// return config;
// },
// error {
// return Promise.reject(error.response);
// });// // 路由响应拦截
// // http response 拦截器
// axios.interceptors.response.use(
// response {
// if (response.data.resultCode 404) {
// console.log(response.data.resultCode是404)
// // 返回 错误代码-1 清除ticket信息并跳转到登录页面
// // cookie.del(ticket)
// // window.location.hrefhttp://login.com
// return
// } else {
// return response;
// }
// },
// error {
// return Promise.reject(error.response) // 返回接口返回的错误信息
// });export default axios;之后在前端项目中关联相关的创建及js文件进行应用。
在前端的项目中main.js文件中引入vue-axios 模块。 Axios是一个基于Promise 用于浏览器和 nodejs 的 HTTP 客户端本质上也是对原生XHR的封装只不过它是Promise的实现版本符合最新的ES规范。
3.2.axios的get请求
在登入组件中进行axios的get请求编写Login.vue的代码
将script标签的代码修改为以下代码进行get请求
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 clickRegister()用户注册/el-link/el-row/el-form/div
/templatescriptimport axios from axiosexport default {name: Login,data() {return {username: ,password: ,msg: 嗨嗨嗨}},methods: {Register() {this.$router.push(/Register);},doSubmit() {let params {username: this.username,password: this.password};console.log(params);//定义后端都请求地址var url http://localhost:8080/ssm/user/userLogin;//注意数据是保存到json对象的params属性//进行请求携带数据进行登入访问axios.get(url, {//携带的参数(数据)params: params,}).then(r {//如果携带的参数数据跟后端数据对应正确说明登入成功提示if(r.data.success){this.$message({showClose: true,message: r.data.msg,type: success});}else{//如果携带的参数数据跟后端数据对应错误说明登入失败提示this.$message.error(r.data.msg);}console.log(r);}).catch(e {console.log(e);});}}}
/script在后端项目中有一个视图解析器来处理我们前端发过来的请求进行处理
package com.sy.ssm.controller;import com.sy.ssm.service.IUserService;
import com.sy.ssm.util.JsonResponseBody;
import com.sy.ssm.util.PageBean;
import com.sy.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.sy.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(/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);}}
}3.3.axios的post请求
使用pos请求一并也进行资源的整合
之前我们把需要的应用模块及组件配置都已经完成现在我们只需要编写我们的登入组件。
在 Login.vue 登入组件的所有代码修改为以下代码即可。
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 clickRegister()用户注册/el-link/el-row/el-form/div
/templatescriptimport axios from axios //用于GET请求import qs from qs //用于post请求export default {name: Login,data() {return {username: ,password: ,msg: 嘿嘿嘿}},methods: {Register() {this.$router.push(/Register);},doSubmit() {let params {username: this.username,password: this.password};console.log(params);//定义后端都请求地址var url this.axios.urls.SYSTEM_USER_DOLOGIN;//注意数据是保存到json对象的params属性//以下是GET请求//进行请求携带数据进行登入访问// axios.get(url, {// //携带的参数(数据)// params: params,// }).then(r {// //如果携带的参数数据跟后端数据对应正确说明登入成功提示// if (r.data.success) {// this.$message({// showClose: true,// message: r.data.msg,// type: success// });// } else {// //如果携带的参数数据跟后端数据对应错误说明登入失败提示// this.$message.error(r.data.msg);// }// console.log(r);// }).catch(e {// console.log(e);// });//以下是post请求及整合资源//通过qs中的stringify方法进行格式转换//注意数据是保存到json对象的params属性this.axios.post(url,params).then(r {console.log(r);//如果携带的参数数据跟后端数据对应正确说明登入成功提示if (r.data.success) {this.$message({showClose: true,message: r.data.msg,type: success});} else {//如果携带的参数数据跟后端数据对应错误说明登入失败提示this.$message.error(r.data.msg);}}).catch(e {console.log(e);});}}}
/scriptstyle scoped.login-wrap {box-sizing: border-box;width: 100%;height: 100%;padding-top: 10%;background-image: 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background-color: #112346; */background-repeat: no-repeat;background-position: center right;background-size: 100%;}.login-container {border-radius: 10px;margin: 0px auto;width: 350px;padding: 30px 35px 15px 35px;background: #fff;border: 1px solid #eaeaea;text-align: left;box-shadow: 0 0 20px 2px rgba(0, 0, 0, 0.1);}.title {margin: 0px auto 40px auto;text-align: center;color: #505458;}
/style结果 3.注册功能
在前端创建组件 Register.vue
templatediv classlogin-wrapel-form classlogin-containerh1 classtitle注册用户/h1el-form-item labelel-input typetext v-modelusername placeholder账号 autocompleteoff/el-input/el-form-itemel-form-item labelel-input typepassword v-modelpassword placeholder密码 autocompleteoff/el-input/el-form-itemel-form-itemel-button typeprimary stylewidth:100%; clickdoSubmit()注册/el-button/el-form-itemel-row styletext-align: center;margin-top:-10pxel-link typeprimary忘记密码/el-linkel-link typeprimary clickgotoLogin()前往登录/el-link/el-row/el-form/div
/templatescriptexport default {name: Registered,data() {return {username: ,password: }},methods: {gotoLogin() {this.$router.push(/)}}}
/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要在index.js处理路径
import Vue from vue
import Router from vue-router
import HelloWorld from /components/HelloWorld
import Login from /views/Login
import Register from /views/RegisterVue.use(Router)export default new Router({routes: [{path: /,name: Login,component: Login},{path: /Register,name: Register,component: Register}]
})注册的方法
package com.sy.ssm.util;import com.sy.ssm.model.Region;
import com.sy.ssm.util.PageBean;
import org.springframework.stereotype.Repository;import java.util.List;public interface IRegionService {ListRegion queryRegionPager(Region region, PageBean pageBean);ListRegion queryRegionById(Region region);
}
写一个注册的web层
package com.sy.ssm.controller;import com.sy.ssm.model.Region;
import com.sy.ssm.service.IRegionService;
import com.sy.ssm.util.JsonResponseBody;
import com.sy.ssm.util.PageBean;
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.RestController;import javax.servlet.http.HttpServletRequest;
import java.util.List;RestController
RequestMapping(/region)
public class RegionController {Autowiredprivate IRegionService regionService;RequestMapping(/queryRegionPager)public JsonResponseBodyListRegion queryRegionPager(Region region, HttpServletRequest request){try {PageBean pageBeannew PageBean();pageBean.setRequest(request);ListRegion regions regionService.queryRegionPager(region, pageBean);return new JsonResponseBody(OK,true,pageBean.getTotal(),regions);} catch (Exception e) {e.printStackTrace();return new JsonResponseBody(分页查询行政区划信息失败,false,0,null);}}RequestMapping(/queryRegionById)public JsonResponseBodyListRegion queryRegionById(Region region){try {ListRegion regions regionService.queryRegionById(region);return new JsonResponseBody(OK,true,0,regions);} catch (Exception e) {e.printStackTrace();return new JsonResponseBody(初始化行政区划代码失败,false,0,null);}}
}结果
4、跨域的概述
4.1.跨域是什么 跨域Cross-Origin是指在浏览器环境下当前网页的域名、协议或端口与请求资源的域名、协议或端口不一致导致浏览器限制了这种跨域请求的访问。 跨域请求受到浏览器的同源策略Same-Origin Policy的限制。同源策略是浏览器的一种安全机制用于保护用户的隐私和数据安全。同源策略要求如果两个URL的协议、域名和端口都相同则这两个URL同源可以进行跨域通信。否则就是跨域请求浏览器会阻止这种跨域请求的访问。 跨域请求的常见场景包括
域名不同例如从 www.example.com 发起请求到 api.example.com。 协议不同例如从 http://example.com 发起请求到 https://example.com。 端口不同例如从 example.com:3000 发起请求到 example.com:8000。 跨域请求可以引发安全问题因此浏览器会对这类请求进行限制。为了在跨域情况下实现数据交互可以使用一些方法如 JSONP、CORS跨域资源共享、代理等来解决跨域问题。 4.2.怎么解决跨域问题
那为什么前面没有这个问题因为我在我的Maven项目里已经做了这个处理
CorsFilter.java
package com.sy.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.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;/*** 配置tomcat允许跨域访问** author Administrator**/
public class CorsFilter 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;HttpServletRequest req (HttpServletRequest) servletRequest;// 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-Methods, POST, GET, PUT, DELETE);//允许客户端发一个新的请求头jwthttpResponse.setHeader(Access-Control-Allow-Headers,responseType,Origin,X-Requested-With, Content-Type, Accept, jwt);//允许客户端处理一个新的响应头jwthttpResponse.setHeader(Access-Control-Expose-Headers, jwt,Content-Disposition);//httpResponse.setHeader(Access-Control-Allow-Headers, Origin, X-Requested-With, Content-Type, Accept);//httpResponse.setHeader(Access-Control-Allow-Methods, POST, GET, PUT, DELETE);// axios的ajax会发两次请求第一次提交方式为option直接返回即可if (OPTIONS.equals(req.getMethod())) {return;}filterChain.doFilter(servletRequest, servletResponse);}Overridepublic void destroy() {}
}
在web.xml !--CrosFilter跨域过滤器--filterfilter-namecorsFilter/filter-namefilter-classcom.sy.ssm.util.CorsFilter/filter-class/filterfilter-mappingfilter-namecorsFilter/filter-nameurl-pattern/*/url-pattern/filter-mapping
然后就可以了。 到这里我的分享就结束了欢迎到评论区探讨交流
