java web项目:adminsystem(1)

本文介绍了一个简单的JSP页面构建过程,包括使用HTML、CSS和JavaScript进行基本的前端布局,通过引入自定义的JavaScript库实现动态效果,并讲解了如何在JSP中设置页面属性。

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准备:
前期准备:安装配置oracle(可在我博客中找到安装oracle 以及配置的文章);

创建项目adminsystem;
搭建tomcat服务器;
导入项目所需要的jar包,将jar包放入web-inf下的lib文件夹;
第一篇主要讲:html+css布局技术:

本项目的web.xml文件是一键生成的;
第一个jsp页面:
在webcontent下新建一个jsp file;
输入名字index.jsp;
选择字符格式:点开右下角的JSP Templates;
在jsp Files中将修改Encoding为utf-8格式;
创建出第一个jsp页面;
代码如下:

/简易坦克/

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
<link rel="stylesheet" href="css/index.css" />
</head>
<body>
hello world
<div id="tank"></div>
<!--  
<div class="a"></div>
<div class="a"></div>
-->
<script src="js/zquery.1.0.0.js"></script>
<script src="js/index.js"></script>

</body>
</html>

优化jsp:
在webcontent下新建两个文件夹:css,js;
在css下新建file:index.css,后缀名为css;
在js下新建file:index.js & zquery.1.0.0.js,后缀名为js;
index.css代码:

body{
    color:red;
}
#tank{
    width:100px;
    height:100px;
/*  background:red;  */
    border:1px solid red;
    position:absolute;
}
.a{
    width:100px;
    height:100px;
    background:red;
    margin-bottom:5px;  

}

index.js代码:

var User = function(username,password){
    this.username = username;
    this.password = password;
    this.login = function(){
        console.log(this.username+"has logined!");

    }
}

//var xiaoming = new User("xiaoming","666666");
//xiaoming.login();

//var xiaohong = {username:"xiaohong",password:"666",login:function()
//{console.log(this.username+"has logined!")}}
//xiaohong.login();
//function run(){
//  console.log("123");
//}
//run();
//??????
//var tank = document.getElementById("tank");
var tank = $("#tank");
var run1=function(){
//  console.log("321");
    //interval 间隔2000运动跑
    window.setInterval(function(){
        tank.style.left = tank.offsetLeft+100+"px";
    }, 50)

}
/**
 * 触发事件
 */
tank.onclick = function(){
    run1();
    //alert("321");
}
//run1();

zquery.1.0.0.js代码:

var $ = function(element){
    var ele;
    if(element.indexOf("#")!=-1) //包含#  
        //substring 截取  如112233  截取掉#
        lel=document.getElementById(element.substring(1));
    return lel;
}
package com.hnkj.webdemo.controller; public class AuthController { } package com.hnkj.webdemo.entity; public class User { } package com.hnkj.webdemo.repository; public class UserRepository { } package com.hnkj.webdemo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; @SpringBootApplication public class WebdemoApplication { public static void main(String[] args) { SpringApplication.run(WebdemoApplication.class, args); } } spring.application.name=webdemo spring.datasource.url=jdbc:mysql://localhost:3306/sale_manager_system?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC spring.datasource.username=root spring.datasource.password=123456 spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver package com.hnkj.webdemo; import org.junit.jupiter.api.Test; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest class WebdemoApplicationTests { @Test void contextLoads() { } } <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.18</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.hnkj</groupId> <artifactId>webdemo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>webdemo</name> <description>Demo project for Spring Boot</description> <url/> <licenses> <license/> </licenses> <developers> <developer/> </developers> <scm> <connection/> <developerConnection/> <tag/> <url/> </scm> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-validation</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>com.mysql</groupId> <artifactId>mysql-connector-j</artifactId> <scope>runtime</scope> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build> </project> <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8" /> <meta name="viewport" content="width=device-width, initial-scale=1.0" /> <title>管理员登录界面</title> <!-- 外链式引入css样式 --> <link rel="stylesheet" href="css/login.css" /> </head> <body> <div id="login"> <h2 class="login-title">用户登录</h2> <form id="loginform" name="loginform"> <div class="loginFunc"> <span class="loginFuncApp">二维码登录</span> <span class="loginFuncNormal">账号登录</span> </div> <input type="text" placeholder="账号" class="userName" name="userName" /> <input type="password" placeholder="密码" class="password" name="password" /> <p class="info"> <input type="radio" value="1" name="role" checked /> <span>管理员</span> <input type="radio" value="2" name="role" /> <span>用户</span> <span class="help"><a href="#">忘记密码?</a></span> </p> <input type="submit" value="登 录" class="submit" /> <input type="button" value="注 册" class="button" onclick="register()" /> </form> <div id="loginError" style="color: red; margin-bottom: 10px; text-align: center;"></div> </div> <!-- 确保 DOM 加载完成后再绑定事件监听器 --> <script> document.getElementById('loginform').addEventListener('submit', function (e) { e.preventDefault(); // 阻止表单默认提交行为 // 获取输入的账号和密码 const userName = document.querySelector('.userName').value; const password = document.querySelector('.password').value; const loginError = document.getElementById('loginError'); // 清除之前的错误信息 loginError.textContent = ''; // 进行登录校验 if (userName.trim() === '') { loginError.textContent = '账号不能为空'; return; } if (password.trim() === '') { loginError.textContent = '密码不能为空'; return; } // 如果需要更复杂的校验,可以添加更多规则,例如密码长度等 if (password.length < 6) { loginError.textContent = '密码长度不能少于6位'; return; } // 获取表单数据 const formData = new FormData(this); const data = Object.fromEntries(formData.entries()); console.log('登录数据:', data); // 发送AJAX请求 fetch('http://localhost:8080/api/auth/login', { method: 'POST', headers: { 'Content-Type': 'application/x-www-form-urlencoded' }, body: new URLSearchParams(data) }) .then(response => { console.log('登录响应:', response); return response.json(); }) .then(result => { console.log('登录成功:', result); if (result.success) { // 根据表单选择的角色跳转 const role = data.role; // 获取表单中的角色值 const redirectPath = role === '1' ? 'AdminSystem/adminHome.html' : 'UserSystem/userHome.html'; window.location.href = redirectPath; } else { // 登录失败,显示错误信息 alert(result.message); } }) .catch(error => { console.error('登录请求出错:', error); alert('登录请求失败,请重试'); }); }); function register() { window.location.href = "register.html"; } </script> </body> </html> 通过这几段代码能否找到问题所在
最新发布
06-05
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