实训-个人博客(后台登录)
在进行后台登录之前我们先在我们数据库的t_user表中输入一条记录,用于我们来进行后台的登录。
这里的密码是进行了MD5加密之后的了,如果还没有进行到MD5的可以写自己的密码,如:111111。
一,构建登录页面和后台管理首页
1,login.html登录页面
在admin文件夹下新建一个login.html页面,这个是登录的页面。
效果展示
login.html当前实现的全部的代码,在这里做的登录的检验。
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head th:replace="admin/_fragments :: head(~{::title})">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>博客管理登录</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/semantic-ui/2.2.4/semantic.min.css">
<link rel="stylesheet" href="../../static/css/me.css">
</head>
<body>
<br>
<br>
<br>
<div class="m-container-small m-padded-tb-massive" style="max-width: 30em !important;">
<div class="ur container">
<div class="ui middle aligned center aligned grid">
<div class="column">
<h2 class="ui teal image header">
<div class="content">
管理后台登录
</div>
</h2>
<form class="ui large form" method="post" action="#" th:action="@{/admin/login}">
<div class="ui segment">
<div class="field">
<div class="ui left icon input">
<i class="user icon"></i>
<input type="text" name="username" placeholder="用户名">
</div>
</div>
<div class="field">
<div class="ui left icon input">
<i class="lock icon"></i>
<input type="password" name="password" placeholder="密码">
</div>
</div>
<button class="ui fluid large teal submit button">登 录</button>
</div>
<div class="ui error mini message"></div>
<div class="ui mini negative message" th:unless="${#strings.isEmpty(message)}" th:text="${message}">用户名和密码错误</div>
</form>
</div>
</div>
</div>
</div>
<!--/*/<th:block th:replace="_fragments :: script">/*/-->
<script src="https://cdn.jsdelivr.net/npm/jquery@3.2/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/semantic-ui/2.2.4/semantic.min.js"></script>
<!--/*/</th:block>/*/-->
<script>
$('.ui.form').form({
fields : {
username : {
identifier: 'username',
rules: [{
type : 'empty',
prompt: '请输入用户名'
}]
},
password : {
identifier: 'password',
rules: [{
type : 'empty',
prompt: '请输入密码'
}]
}
}
});
</script>
</body>
</html>
2,_fragments.html页面
在admin文件夹下新建一个_fragments.html页面用来后台用。
所有代码
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head th:fragment="head(title)">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title th:replace="${title}">博客详情</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/semantic-ui/2.2.4/semantic.min.css"> <link rel="stylesheet" type="text/css" href="../static/css/typo.css" th:href="@{/css/typo.css}">
<link rel="stylesheet" type="text/css" href="../static/css/animate.css" th:href="@{/css/animate.css}">
<link rel="stylesheet" type="text/css" href="../static/lib/prism/prism.css" th:href="@{/lib/prism/prism.css}">
<link rel="stylesheet" type="text/css" href="../static/lib/tocbot/tocbot.css" th:href="@{/lib/tocbot/tocbot.css}">
<link rel="stylesheet" type="text/css" href="../static/css/me.css" th:href="@{/css/me.css}">
</head>
<body>
<!--导航-->
<nav th:fragment="menu(n)" class="ui inverted attached segment m-padded-tb-mini m-shadow-small" >
<div class="ui container">
<div class="ui inverted secondary stackable menu">
<h2 class="ui teal header item">管理后台</h2>
<a href="#" class="active m-item item m-mobile-hide" th:classappend="${n==1} ? 'active'"><i class="mini home icon"></i>博客</a>
<a href="#" class=" m-item item m-mobile-hide" th:classappend="${n==2} ? 'active'"><i class="mini idea icon"></i>分类</a>
<a href="#" class="m-item item m-mobile-hide" th:classappend="${n==3} ? 'active'"><i class="mini tags icon"></i>标签</a>
<div class="right m-item m-mobile-hide menu">
<div class="ui dropdown item">
<div class="text">
<img class="ui avatar image" src="https://unsplash.it/100/100?image=1005">
李仁密
</div>
<i class="dropdown icon"></i>
<div class="menu">
<a th:href="@{/admin/logout}" class="item">注销</a>
</div>
</div>
</div>
</div>
</div>
<a href="#" class="ui menu toggle black icon button m-right-top m-mobile-show">
<i class="sidebar icon"></i>
</a>
</nav>
<!--底部footer-->
<footer th:fragment="footer" class="ui inverted vertical segment m-padded-tb-massive">
<div class="ui center aligned container">
<div class="ui inverted divided stackable grid">
<div class="three wide column">
<div class="ui inverted link list">
<div class="item">
<img src="../static/images/wechat.jpg" th:src="@{/images/wechat.jpg}" class="ui rounded image" alt="" style="width: 110px">
</div>
</div>
</div>
<div class="three wide column" >
<h4 class="ui inverted header m-text-thin m-text-spaced " >最新博客</h4>
<div id="newblog-container">
<div class="ui inverted link list" th:fragment="newblogList">
<a href="#" th:href="@{/blog/{id}(id=${blog.id})}" target="_blank" class="item m-text-thin" th:each="blog : ${newblogs}" th:text="${blog.title}">用户故事(User Story)</a>
<!--/*-->
<a href="#" class="item m-text-thin">用户故事(User Story)</a>
<a href="#" class="item m-text-thin">用户故事(User Story)</a>
<!--*/-->
</div>
</div>
</div>
<div class="three wide column">
<h4 class="ui inverted header m-text-thin m-text-spaced ">联系我</h4>
<div class="ui inverted link list">
<a href="#" class="item m-text-thin" th:text="#{index.email}">Email:lirenmi@163.com</a>
<a href="#" class="item m-text-thin" th:text="#{index.qq}">QQ:865729312</a>
</div>
</div>
<div class="seven wide column">
<h4 class="ui inverted header m-text-thin m-text-spaced ">Blog</h4>
<p class="m-text-thin m-text-spaced m-opacity-mini" th:text="#{index.blogDescription}">这是我的个人博客、会分享关于编程、写作、思考相关的任何内容,希望可以给来到这儿的人有所帮助...</p>
</div>
</div>
<div class="ui inverted section divider"></div>
<p class="m-text-thin m-text-spaced m-opacity-tiny">Copyright © 2016 - <span th:text="${#dates.year(#dates.createNow())}">2017</span> Lirenmi Designed by Lirenmi</p>
</div>
</footer>
<th:block th:fragment="script">
<script src="https://cdn.jsdelivr.net/npm/jquery@3.2/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/semantic-ui/2.2.4/semantic.min.js"></script>
<script src="../static/lib/scroll/jquery.scrollTo.min.js" th:src="@{/lib/scroll/jquery.scrollTo.min.js}"></script>
<script src="../static/lib/prism/prism.js" th:src="@{/lib/prism/prism.js}"></script>
<script src="../static/lib/tocbot/tocbot.min.js" th:src="@{/lib/tocbot/tocbot.min.js}"></script>
<script src="../static/lib/qrcode/qrcode.min.js" th:src="@{/lib/qrcode/qrcode.min.js}"></script>
<script src="../static/lib/waypoints/jquery.waypoints.min.js" th:src="@{/lib/waypoints/jquery.waypoints.min.js}"></script>
<script>
$('#newblog-container').load(/*[[@{/footer/newblog}]]*/"/footer/newblog");
</script>
</th:block>
</body>
</html>
3,index.html后台管理首页
在admin文件夹下新建一个index.html页面,这个页面就是登录后的首页面了。
效果展示
代码
<!DOCTYPE html>
<html lang="en" xmlns:th="http://www.w3.org/1999/xhtml">
<head th:replace="admin/_fragments :: head(~{::title})">
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>博客管理</title>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/semantic-ui/2.2.4/semantic.min.css">
<link rel="stylesheet" href="../../static/css/me.css">
</head>
<body>
<!--导航-->
<nav th:replace="admin/_fragments :: menu(0)" class="ui inverted attached segment m-padded-tb-mini m-shadow-small" >
<div class="ui container">
<div class="ui inverted secondary stackable menu">
<h2 class="ui teal header item">管理后台</h2>
<a href="#" class="active m-item item m-mobile-hide"><i class="mini home icon"></i>博客</a>
<a href="#" class=" m-item item m-mobile-hide"><i class="mini idea icon"></i>分类</a>
<a href="#" class="m-item item m-mobile-hide"><i class="mini tags icon"></i>标签</a>
<div class="right m-item m-mobile-hide menu">
<div class="ui dropdown item">
<div class="text">
<img class="ui avatar image" src="https://unsplash.it/100/100?image=1005">
哈哈
</div>
<i class="dropdown icon"></i>
<div class="menu">
<a href="#" th:href="@{/admin/logout}" class="item">注销</a>
</div>
</div>
</div>
</div>
</div>
<a href="#" class="ui menu toggle black icon button m-right-top m-mobile-show">
<i class="sidebar icon"></i>
</a>
</nav>
<!--中间内容-->
<div class="m-container-small m-padded-tb-big">
<div class="ui container">
<div class="ui success large message">
<h3>Hi,</h3>
<p>你好,欢迎登录!</p>
</div>
<img src="https://unsplash.it/1000/400?image=15" alt="" class="ui rounded bordered fluid image">
</div>
</div>
<br>
<br>
<!--底部footer-->
<footer th:replace="admin/_fragments :: footer" class="ui inverted vertical segment m-padded-tb-massive">
<div class="ui center aligned container">
<div class="ui inverted divided stackable grid">
<div class="three wide column">
<div class="ui inverted link list">
<div class="item">
<img src="../../static/images/wechat.jpg" class="ui rounded image" alt="" style="width: 110px">
</div>
</div>
</div>
<div class="three wide column">
<h4 class="ui inverted header m-text-thin m-text-spaced " >最新博客</h4>
<div class="ui inverted link list">
<a href="#" class="item m-text-thin">用户故事(User Story)</a>
<a href="#" class="item m-text-thin">用户故事(User Story)</a>
<a href="#" class="item m-text-thin">用户故事(User Story)</a>
</div>
</div>
<div class="three wide column">
<h4 class="ui inverted header m-text-thin m-text-spaced ">联系我</h4>
<div class="ui inverted link list">
<a href="#" class="item m-text-thin">Email:2410845853@qq.com</a>
<a href="#" class="item m-text-thin">QQ:2410845853</a>
</div>
</div>
<div class="seven wide column">
<h4 class="ui inverted header m-text-thin m-text-spaced ">Blog</h4>
<p class="m-text-thin m-text-spaced m-opacity-mini">这是我的个人博客、会分享关于编程、写作、思考相关的任何内容,希望可以给来到这儿的人有所帮助...</p>
</div>
</div>
<div class="ui inverted section divider"></div>
<p class="m-text-thin m-text-spaced m-opacity-tiny">Copyright © 2016 - 2017 Lirenmi Designed by Lirenmi</p>
</div>
</footer>
<!--/*/<th:block th:replace="_fragments :: script">/*/-->
<script src="https://cdn.jsdelivr.net/npm/jquery@3.2/dist/jquery.min.js"></script>
<script src="https://cdn.jsdelivr.net/semantic-ui/2.2.4/semantic.min.js"></script>
<!--/*/</th:block>/*/-->
<script>
$('.menu.toggle').click(function () {
$('.m-item').toggleClass('m-mobile-hide');
});
$('.ui.dropdown').dropdown({
on : 'hover'
});
</script>
</body>
</html>
二,UserService和UserServicelmpl
在com.lrm下新建一个文件夹service,在service文件夹中新建UserService接口和UserServicelmpl实现接口类
在com.lrm下新建一个文件夹dao,在dao文件夹中新建UserRepository接口用于与数据库相连接。
三、LoginController实现登录
在com.lrm.web下新建一个文件夹admin,在admin文件夹中新建LoginController登录控制器和BlogController blogs控制器。
LoginController.java代码
package com.lrm.web.admin;
import com.lrm.po.User;
import com.lrm.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import javax.servlet.http.HttpSession;
@Controller
@RequestMapping("/admin")
public class LoginController {
@Autowired
private UserService userService;
@GetMapping
public String loginPage() {
return "admin/login";
}
@PostMapping("/login")
public String login(@RequestParam String username,
@RequestParam String password,
HttpSession session,
RedirectAttributes attributes) {
User user = userService.checkUser(username, password);
if (user != null) {
user.setPassword(null);
session.setAttribute("user",user);
return "admin/index";
} else {
attributes.addFlashAttribute("message", "用户名和密码错误");
return "redirect:/admin";
}
}
@GetMapping("/logout")
public String logout(HttpSession session) {
session.removeAttribute("user");
return "redirect:/admin";
}
}
BlogController
这个控制器是为了不让其他的人能直接通过输入url就可以访问我们的blogs.html页面。
package com.lrm.web.admin;
import com.lrm.po.Blog;
import com.lrm.po.Type;
import com.lrm.po.User;
import com.lrm.service.BlogService;
import com.lrm.service.TagService;
import com.lrm.service.TypeService;
import com.lrm.vo.BlogQuery;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.web.PageableDefault;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.mvc.support.RedirectAttributes;
import javax.servlet.http.HttpSession;
@Controller
@RequestMapping("/admin")
public class BlogController {
private static final String INPUT = "admin/blogs-input";
private static final String LIST = "admin/blogs";
private static final String REDIRECT_LIST = "redirect:/admin/blogs";
@Autowired
private BlogService blogService;
@Autowired
private TypeService typeService;
@Autowired
private TagService tagService;
@GetMapping("/blogs")
public String blogs(@PageableDefault(size = 8, sort = {"updateTime"}, direction = Sort.Direction.DESC) Pageable pageable,
BlogQuery blog, Model model) {
model.addAttribute("types", typeService.listType());
model.addAttribute("page", blogService.listBlog(pageable, blog));
return LIST;
}
@PostMapping("/blogs/search")
public String search(@PageableDefault(size = 8, sort = {"updateTime"}, direction = Sort.Direction.DESC) Pageable pageable,
BlogQuery blog, Model model) {
model.addAttribute("page", blogService.listBlog(pageable, blog));
return "admin/blogs :: blogList";
}
@GetMapping("/blogs/input")
public String input(Model model) {
setTypeAndTag(model);
model.addAttribute("blog", new Blog());
return INPUT;
}
private void setTypeAndTag(Model model) {
model.addAttribute("types", typeService.listType());
model.addAttribute("tags", tagService.listTag());
}
@GetMapping("/blogs/{id}/input")
public String editInput(@PathVariable Long id, Model model) {
setTypeAndTag(model);
Blog blog = blogService.getBlog(id);
blog.init();
model.addAttribute("blog",blog);
return INPUT;
}
@PostMapping("/blogs")
public String post(Blog blog, RedirectAttributes attributes, HttpSession session) {
blog.setUser((User) session.getAttribute("user"));
blog.setType(typeService.getType(blog.getType().getId()));
blog.setTags(tagService.listTag(blog.getTagIds()));
Blog b;
if (blog.getId() == null) {
b = blogService.saveBlog(blog);
} else {
b = blogService.updateBlog(blog.getId(), blog);
}
if (b == null ) {
attributes.addFlashAttribute("message", "操作失败");
} else {
attributes.addFlashAttribute("message", "操作成功");
}
return REDIRECT_LIST;
}
@GetMapping("/blogs/{id}/delete")
public String delete(@PathVariable Long id,RedirectAttributes attributes) {
blogService.deleteBlog(id);
attributes.addFlashAttribute("message", "删除成功");
return REDIRECT_LIST;
}
}
四、MD5加密
在net.zl.myblog下新建一个文件夹util,在util文件夹中新建MD5Utils用于加密的类
package com.lrm.util;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
public class MD5Utils {
/**
* MD5加密类
* @param str 要加密的字符串
* @return 加密后的字符串
*/
public static String code(String str){
try {
MessageDigest md = MessageDigest.getInstance("MD5");
md.update(str.getBytes());
byte[]byteDigest = md.digest();
int i;
StringBuffer buf = new StringBuffer("");
for (int offset = 0; offset < byteDigest.length; offset++) {
i = byteDigest[offset];
if (i < 0)
i += 256;
if (i < 16)
buf.append("0");
buf.append(Integer.toHexString(i));
}
//32位加密
return buf.toString();
// 16位的加密
//return buf.toString().substring(8, 24);
} catch (NoSuchAlgorithmException e) {
e.printStackTrace();
return null;
}
}
public static void main(String[] args) {
System.out.println(code("111111"));
}
}
五、登录拦截器
package com.lrm.interceptor;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;
@Configuration
public class WebConfig extends WebMvcConfigurerAdapter {
@Override
public void addInterceptors(InterceptorRegistry registry) {
registry.addInterceptor(new LoginInterceptor())
.addPathPatterns("/admin/**")
.excludePathPatterns("/admin")
.excludePathPatterns("/admin/login");
}
}