【Java】从零开始搭建SpringBoot项目

Z时代
2024-01-10
分类：技术分享

一、新建springboot项目

1、

new-->Project-->Spring Initralizr
Group:com.zb
Artifact:zbook
springboot version:2.0.4

2、

将

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId></dependency>

改成

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId></dependency>

3、此时项目结构

【Java】从零开始搭建SpringBoot项目

maven clean一下，右键ZbookApplication运行，项目就跑起来了，就是这么简单，真正做到了开箱即用。

二、RestFul Api接口

1、在controller包下新建HomeController

package com.zb.controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class HomeController {
@RequestMapping("/")
public String home(){
return "Hello, Zbook!";
}}

注：RestController和Controller注解的区别是：RestController是返回的内容就是返回的内容，相当于加个@ResponseBody,而controller一般是返回的页面

此时打开网页，输入 http://localhost:8080/
就会看到Hello,Zbook!

三、集成Thymleaf

1、

上面的可以当作是提供服务的接口，假设我们要开发一个web应用，springboot默认是集成的thymleaf。
springboot是约定大于配置的，我们来看看关于thymleaf的约定
（1）默认静态文件（js，css，jpg等）放在resources下面的static文件夹下面
（2）页面文件放在templates文件夹下面
我们采用bootstrap来渲染页面，如下图
【Java】从零开始搭建SpringBoot项目

login.html
<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8" />
<title>登录</title>
<link href="https://segmentfault.com/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<form action="login_in" method="post" class="form-horizontal" role="form" >
<div class="form-group">
<h2 class="col-sm-offset-5 col-sm-4">用户登录</h2>
</div>
<div class="form-group">
<label for="username" class="col-sm-offset-3 col-sm-2 control-label">用户名：</label>
<div class="col-sm-3">
<input type="text" class="form-control" id="username" name="username" placeholder="请输入用户名" />
</div>
</div>
<div class="form-group">
<label for="password" class="col-sm-offset-3 col-sm-2 control-label">密码：</label>
<div class="col-sm-3">
<input type="text" class="form-control" id="password" name="password" placeholder="请输入密码" />
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-5 col-sm-4">
<button type="submit" class="btn btn-default">登录</button>
</div>
</div>
</form>
</div>
<script></script>
<script></script>
</body></html>

2、写一个LoginController

package com.zb.controller;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
public class LoginController {
@RequestMapping("/login")
public String login(){
return "login";
}}

3、加依赖

<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId></dependency>

4、

重启， http://localhost:8080/login
则会看到登录页面

四、集成mybatis

1、

springboot的配置文件分为两种：application.properties和application.yml
我们把它改成application.yml这种更直观

spring: application: name: myspringboot output: ansi: enabled: always profiles: active: dev thymeleaf: encoding: UTF-8 prefix: classpath:/templates/ server: tomcat: uri-encoding: UTF-8 max-connections: 500 min-spare-threads: 25 max-threads: 300 accept-count: 200 port: 8080 mybatis: type-aliases-package: com.zb.mapper mapper-locations: classpath:mapping/*.xml pagehelper: helper-dialect: mysql reasonable: true support-methods-arguments: true params: count=countSql logging: level: com.zb.mapper: debug --- #开发配置 spring: profiles: dev datasource: url: jdbc:mysql://localhost:3306/zb_db?useUnicode=true&characterEncoding=utf8&autoReconnect=true&failOverReadOnly=false&useSSL=false username: root password: 123456 driver-class-name: com.mysql.jdbc.Driver type: com.alibaba.druid.pool.DruidDataSource filters: stat maxActive: 20 initialSize: 1 maxWait: 60000 minIdle: 1 timeBetweenEvictionRunsMillis: 60000 minEvictableIdleTimeMillis: 300000 validationQuery: select 'x' testWhileIdle: true testOnBorrow: false testOnReturn: false poolPreparedStatements: true

maxOpenPreparedStatements: 20

2、添加依赖

        <dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>RELEASE</version>
</dependency>
<!-- 分页插件 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper-spring-boot-starter</artifactId>
<version>1.2.3</version></dependency>

3、建表

CREATE datebase zb_db;

CREATE TABLE `user` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`username` varchar(255) DEFAULT NULL,
`password` varchar(255) DEFAULT NULL,
`mobile` varchar(255) DEFAULT NULL,
`email` varchar(255) DEFAULT NULL,
`sex` varchar(255) DEFAULT NULL,
`nickname` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(1, 'admin', '123456', '13918891675','[email protected]', '男', '管理员');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(2, 'lisi2', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(3, 'lisi3', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(4, 'lisi4', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(5, 'lisi5', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(6, 'lisi6', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(7, 'lisi7', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(8, 'lisi8', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(9, 'lisi9', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(10, 'lisi10', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(11, 'lisi11', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(12, 'lisi12', '123456', '13918891675','[email protected]', 'm', 'lisi1');
insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(13, 'lisi13', '123456', '13918891675','[email protected]', 'm', 'lisi1');insert into `user`(id, username, password, mobile, email,sex, nickname) VALUES(14, 'lisi14', '123456', '13918891675','[email protected]', 'm', 'lisi1');

4、用mybatisgenerator自动生成文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE generatorConfiguration
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
<generatorConfiguration>
<!-- 数据库驱动:选择你的本地硬盘上面的数据库驱动包-->
<classPathEntry  location="C:\Users\DELL\Downloads\mysql-connector-java-5.1.22-bin.jar"/>
<context id="DB2Tables"  targetRuntime="MyBatis3">
<commentGenerator>
<property name="suppressDate" value="true"/>
<!-- 是否去除自动生成的注释 true：是 ： false:否 -->
<property name="suppressAllComments" value="true"/>
</commentGenerator>
<!--数据库链接URL，用户名、密码 -->
<jdbcConnection driverClass="com.mysql.jdbc.Driver" connectionURL="jdbc:mysql://127.0.0.1/zb_db" userId="root" password="123456">
</jdbcConnection>
<javaTypeResolver>
<property name="forceBigDecimals" value="false"/>
</javaTypeResolver>
<!-- 生成模型的包名和位置-->
<javaModelGenerator targetPackage="com.zb.model" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
<property name="trimStrings" value="true"/>
</javaModelGenerator>
<!-- 生成映射文件的包名和位置-->
<sqlMapGenerator targetPackage="mapping" targetProject="src/main/resources">
<property name="enableSubPackages" value="true"/>
</sqlMapGenerator>
<!-- 生成DAO的包名和位置-->
<javaClientGenerator type="XMLMAPPER" targetPackage="com.zb.mapper" targetProject="src/main/java">
<property name="enableSubPackages" value="true"/>
</javaClientGenerator>
<!-- 要生成的表 tableName是数据库中的表名或视图名 domainObjectName是实体类名-->
<table tableName="role_permission" domainObjectName="RolePermission" enableCountByExample="false" enableUpdateByExample="false" enableDeleteByExample="false" enableSelectByExample="false" selectByExampleQueryId="false"></table>
</context></generatorConfiguration>

5、在pom里面添加plugin

<!-- mybatis generator 自动生成代码插件 -->
<plugin>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-maven-plugin</artifactId>
<version>1.3.2</version>
<configuration>
<configurationFile>${basedir}/src/main/resources/generator/generatorConfig.xml</configurationFile>
<overwrite>true</overwrite>
<verbose>true</verbose>
</configuration></plugin>

6、用mvn mybatis-generator:generate -e命令生成文件

此时目录结构

【Java】从零开始搭建SpringBoot项目

7、写dao和service,controller,mapper

mapper增加了几个方法

@Select("Select * from user")
List<User> selectAll();
@Select("Select * from user where username = #{username} and password = #{password}")
User selectByUsernamePass(@Param("username") String username, @Param("password") String password);
@Select("Select * from user where username = #{username}")User selectByUsername(@Param("username") String username);

dao和service都是正常调用，下面是controller

package com.zb.controller;
import com.github.pagehelper.PageInfo;
import com.zb.model.User;
import com.zb.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.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/user")
@ResponseBody
public User getUserById(int id){
User user = userService.selectByPrimaryKey(id);
return user;
}
@RequestMapping("https://segmentfault.com/userlist")
public String getUserList(Model model, PageInfo pageInfo){
int pageNum  = (pageInfo.getPageNum() == 0)? 1 : pageInfo.getPageNum();
int pageSize  = (pageInfo.getPageSize() == 0)? 10 : pageInfo.getPageSize();
PageInfo<User> result = userService.selectAll(pageNum, pageSize);
model.addAttribute("users", result.getList());
model.addAttribute("pageInfo", result);
return "userlist";
}
@RequestMapping("/userdelete")
public String userdelete(int id){
userService.deleteByPrimaryKey(id);
return "redirect:/userlist";
}
@RequestMapping("/useredit")
public String useredit(int id, Model model){
User user = userService.selectByPrimaryKey(id);
model.addAttribute("user", user);
return "useredit";
}
@RequestMapping(value = "/userupdateoradd", method = RequestMethod.POST)
public String userUpdateOrAdd(User user){
if(user.getId() == 0){
userService.insertSelective(user);
} else {
userService.updateByPrimaryKeySelective(user);
}
return "redirect:/userlist";
}}

页面userlist.html

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8" />
<title>用户管理</title>
<link href="https://segmentfault.com/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<div>
<nav class="navbar navbar-default" role="navigation">
<div class="container-fluid">
<div>
<ul  class="nav navbar-nav" >
<li><a href="https://segmentfault.com/userlist">用户管理</a></li>
<li><a href="#">书籍管理</a></li>
</ul>
</div>
</div>
</nav>
</div>
<div>
<h2>用户管理</h2>
<table width="100%" border="0" cellpadding="0" cellspacing="0" class="table_list">
<thead>
<tr>
<th width="20%">编号</th>
<th width="20%">用户名</th>
<th width="20%">电子邮箱</th>
<th width="20%">手机</th>
<th width="20%">操作</th>
</tr>
</thead>
<tbody>
<tr th:each="user:${users}">
<td height="40px"><a th:text="${user.id}" data-toggle="modal" data-target="#myModal" onclick="values(this)"></a></td>
<td th:text="${user.username}"></td>
<td th:text="${user.email}"></td>
<td th:text="${user.mobile}"></td>
<td><a href="#" class="delete_a" th:value="${user.id}">删除</a></td>
</tr>
</tbody>
</table>
</div>
</div>
<script></script>
<script></script>
</body></html>

8，在ZbookApplication上加上注解扫描

@ComponentScan(basePackages = {"com.zb"})@MapperScan("com.zb.mapper")

9、顺便把分页加上（依赖包之前已经加了）

service层

    @Override
public PageInfo<User> selectAll(int pageNum, int pageSize) {
PageHelper.startPage(pageNum, pageSize);
List<User> users = userDao.selectAll();
PageInfo<User> pageInfo = new PageInfo<>(users);
return pageInfo;}

controller层

public String getUserList(Model model, PageInfo pageInfo){
int pageNum  = (pageInfo.getPageNum() == 0)? 1 : pageInfo.getPageNum();
int pageSize  = (pageInfo.getPageSize() == 0)? 10 : pageInfo.getPageSize();
PageInfo<User> result = userService.selectAll(pageNum, pageSize);
model.addAttribute("users", result.getList());
model.addAttribute("pageInfo", result);
return "userlist";}

页面修改：

<div id="example"> <ul id="pageLimit"></ul> </div>
<input type="hidden" id="pageNum" name="pageNum" th:value="${pageInfo.pageNum}" /><input type="hidden" id="pages" name="pages" th:value="${pageInfo.pages}" />

<script></script>
<script>
$('#pageLimit').bootstrapPaginator({
currentPage: $("#pageNum").val(),
totalPages: $("#pages").val(),
size: "normal",
bootstrapMajorVersion: 3,
alignment: "right",
numberOfPages: 5,
itemTexts: function (type, page, current) {
switch (type) {
case "first": return "首页";
case "prev": return "上一页";
case "next": return "下一页";
case "last": return "末页";
case "page": return page;
}
},
onPageClicked: function (event, originalEvent, type, page){//给每个页眉绑定一个事件，其实就是ajax请求，其中page变量为当前点击的页上的数字。
window.location.href = "userlist?pageNum=" + page;
}
});
$(function(){
$(".delete_a").click(function(){
var userId=$(this).attr("value");
if(confirm("确认删除吗？")){
window.location.href="https://segmentfault.com/userdelete?id=" + userId;
return ;
}
});
});</script>

此时目录

【Java】从零开始搭建SpringBoot项目

此时重启，输入 http://localhost:8080/userlist
就会看到user列表，也可以分页。

五、简单登录，用filter实现

1、

package com.zb.filter;
import com.zb.model.User;
import javax.servlet.*;
import javax.servlet.annotation.WebFilter;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
@WebFilter(filterName = "sessionFilter",urlPatterns = {"/*"})
public class SessionFilter implements Filter {
String NO_LOGIN = "您还未登录";
String[] includeUrls = new String[]{"/login","/login_in"};
@Override
public void init(FilterConfig filterConfig) throws ServletException {
}
@Override
public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest)servletRequest;
HttpServletResponse response = (HttpServletResponse)servletResponse;
HttpSession session = request.getSession();
String url = request.getRequestURI();
boolean needFilter = isNeedFilter(url);
//静态资源放行
if(url.endsWith(".css")||url.endsWith(".js")||url.endsWith(".jpg")
||url.endsWith(".gif")||url.endsWith(".png")){
filterChain.doFilter(servletRequest, servletResponse);
return;
}
if(!needFilter){
filterChain.doFilter(servletRequest, servletResponse);
} else {
User user = (User)session.getAttribute(session.getId());
if(user != null){
filterChain.doFilter(servletRequest, servletResponse);
} else {
String requestType = request.getHeader("X-Requested-With");
//判断是否是ajax请求
if(requestType!=null && "XMLHttpRequest".equals(requestType)){
response.getWriter().write(this.NO_LOGIN);
}else{
//重定向到登录页(需要在static文件夹下建立此html文件)
response.sendRedirect(request.getContextPath()+"/login");
}
return;
}
}
}
public boolean isNeedFilter(String uri) {
for (String includeUrl : includeUrls) {
if(includeUrl.equals(uri)) {
return false;
}
}
return true;
}
@Override
public void destroy() {
}}

2、在ZbookApplication上加注解

@ServletComponentScan

3、在LoginController下写登录逻辑

package com.zb.controller;
import com.zb.model.User;
import com.zb.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.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
@Controller
public class LoginController {
@Autowired
private UserService userService;
@RequestMapping("/login")
public String login(){
return "login";
}
@RequestMapping(value = "/login_in", method = RequestMethod.POST)
public String login_in(User user, HttpServletRequest request, Model model){
User user1 = userService.validateUser(user.getUsername(), user.getPassword());
if(user1 == null){
return "login";
}
HttpSession session = request.getSession();
session.setAttribute(session.getId(), user1);
return "redirect:/userlist";
}
@RequestMapping("/logout")
public String logout(HttpServletRequest request){
request.getSession().removeAttribute(request.getSession().getId());
return "login";
}}

现在就可以简单的登录了

4、修改页面让页面显示用户名和退出

<div>
<a href="https://segmentfault.com/a/1190000038992617/logout">退出</a>
<p th:text="${#httpSession.getAttribute(#httpSession.getId()).username}"></p>
<p>您好，</p></div>

六、权限

权限管理我们使用现在比较流行的shiro,原理就不说了，直接说怎么使用

1、加依赖包

<!--shiro权限-->
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-core</artifactId>
<version>1.2.4</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-web</artifactId>
<version>1.2.4</version>
</dependency>
<dependency>
<groupId>org.apache.shiro</groupId>
<artifactId>shiro-spring</artifactId>
<version>1.2.4</version>
</dependency>
<dependency>
<groupId>com.github.theborakompanioni</groupId>
<artifactId>thymeleaf-extras-shiro</artifactId>
<version>2.0.0</version></dependency>

2、建表

shiro需要5张表：用户、角色、权限、用户角色关联表，角色权限关联表
用户表已建立，现在续建4张表

CREATE TABLE `role` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`rolename` varchar(255) DEFAULT NULL,
`description` varchar(255) DEFAULT NULL,
`status` varchar(255) DEFAULT NULL,
`create_time` DATE DEFAULT NULL,
`update_time` DATE DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
CREATE TABLE `permission` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`permissionname` varchar(255) DEFAULT NULL,
`resourceType` varchar(255) DEFAULT NULL,
`url` varchar(255) DEFAULT NULL,
`permission` varchar(255) DEFAULT NULL,
`status` varchar(255) DEFAULT NULL,
`create_time` DATE DEFAULT NULL,
`update_time` DATE DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
CREATE TABLE `user_role` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`user_id` varchar(255) DEFAULT NULL,
`role_id` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
CREATE TABLE `role_permission` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`role_id` varchar(255) DEFAULT NULL,
`permission_id` varchar(255) DEFAULT NULL,
PRIMARY KEY (`id`)) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;

insert into `role`(id, rolename, description, status, create_time, update_time) VALUES (1, 'admin', '管理员', 'use', '2018-08-10', '2018-08-10');
insert into `role`(id, rolename, description, status, create_time, update_time) VALUES (2, 'manage', '经理', 'use', '2018-08-10', '2018-08-10');
insert into `role`(id, rolename, description, status, create_time, update_time) VALUES (3, 'user', '普通用户', 'use', '2018-08-10', '2018-08-10');
INSERT INTO `permission` (id, permissionname, resourceType, url, permission, status, create_time, update_time) VALUES (1,'用户管理','menu', 'userlist','user:list','use','2018-08-10', '2018-08-10');
INSERT INTO `permission` (id, permissionname, resourceType, url, permission, status, create_time, update_time) VALUES (2,'用户修改','menu', 'useredit','user:edit','use','2018-08-10', '2018-08-10');
INSERT INTO `permission` (id, permissionname, resourceType, url, permission, status, create_time, update_time) VALUES (3,'用户删除','menu', 'userdelete','user:delete','use','2018-08-10', '2018-08-10');
INSERT INTO `user_role` (id, user_id, role_id) VALUES (1, 1 ,1);
INSERT INTO `user_role` (id, user_id, role_id) VALUES (2, 1 ,2);
INSERT INTO `user_role` (id, user_id, role_id) VALUES (3, 1 ,3);
INSERT INTO `user_role` (id, user_id, role_id) VALUES (4, 2 ,2);
INSERT INTO `user_role` (id, user_id, role_id) VALUES (5, 3 ,3);
INSERT INTO `user_role` (id, user_id, role_id) VALUES (6, 4 ,3);
INSERT INTO `role_permission` (id, role_id, permission_id) VALUES (1, 1, 1);
INSERT INTO `role_permission` (id, role_id, permission_id) VALUES (2, 1, 2);
INSERT INTO `role_permission` (id, role_id, permission_id) VALUES (3, 1, 3);
INSERT INTO `role_permission` (id, role_id, permission_id) VALUES (4, 2, 1);
INSERT INTO `role_permission` (id, role_id, permission_id) VALUES (5, 2, 2);INSERT INTO `role_permission` (id, role_id, permission_id) VALUES (6, 3, 1);

3、加载bean

package com.zb.shiro;
import java.util.LinkedHashMap;
import java.util.Map;
import at.pollux.thymeleaf.shiro.dialect.ShiroDialect;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.spring.security.interceptor.AuthorizationAttributeSourceAdvisor;
import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator;
import org.springframework.boot.web.servlet.FilterRegistrationBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.filter.DelegatingFilterProxy;
/**
* Shiro 配置
*
Apache Shiro 核心通过 Filter 来实现，就好像SpringMvc 通过DispachServlet 来主控制一样。
既然是使用 Filter 一般也就能猜到，是通过URL规则来进行过滤和权限校验，所以我们需要定义一系列关于URL的规则和访问权限。
*/
@Configuration
public class ShiroConfiguration {
private static final Logger logger = LoggerFactory.getLogger(ShiroConfiguration.class);
@Bean
public FilterRegistrationBean delegatingFilterProxy(){
FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
DelegatingFilterProxy proxy = new DelegatingFilterProxy();
proxy.setTargetFilterLifecycle(true);
proxy.setTargetBeanName("shiroFilter");
filterRegistrationBean.setFilter(proxy);
return filterRegistrationBean;
}
/**
* ShiroFilterFactoryBean 处理拦截资源文件问题。
* 注意：单独一个ShiroFilterFactoryBean配置是或报错的，以为在
* 初始化ShiroFilterFactoryBean的时候需要注入：SecurityManager
*
Filter Chain定义说明
1、一个URL可以配置多个Filter，使用逗号分隔
2、当设置多个过滤器时，全部验证通过，才视为通过
3、部分过滤器可指定参数，如perms，roles
*
*/
@Bean("shiroFilter")
public ShiroFilterFactoryBean shirFilter(SecurityManager securityManager){
logger.info("ShiroConfiguration.shirFilter()");
ShiroFilterFactoryBean shiroFilterFactoryBean  = new ShiroFilterFactoryBean();
// 必须设置 SecurityManager
shiroFilterFactoryBean.setSecurityManager(securityManager);
//拦截器.
Map<String,String> filterChainDefinitionMap = new LinkedHashMap<String,String>();
//配置退出过滤器,其中的具体的退出代码Shiro已经替我们实现了
filterChainDefinitionMap.put("/logout", "https://segmentfault.com/a/1190000038992617/logout");
filterChainDefinitionMap.put("/*/*.js", "anon");
filterChainDefinitionMap.put("/*/*.css", "anon");
filterChainDefinitionMap.put("/login_in", "anon");
filterChainDefinitionMap.put("/login", "anon");
//<!-- 过滤链定义，从上向下顺序执行，一般将 /**放在最为下边 -->:这是一个坑呢，一不小心代码就不好使了;
//<!-- authc:所有url都必须认证通过才可以访问; anon:所有url都都可以匿名访问-->
filterChainDefinitionMap.put("/**", "authc");
// 如果不设置默认会自动寻找Web工程根目录下的"/login.jsp"页面
shiroFilterFactoryBean.setLoginUrl("/login");
// 登录成功后要跳转的链接
shiroFilterFactoryBean.setSuccessUrl("https://segmentfault.com/userlist");
//未授权界面;
shiroFilterFactoryBean.setUnauthorizedUrl("/login");
shiroFilterFactoryBean.setFilterChainDefinitionMap(filterChainDefinitionMap);
return shiroFilterFactoryBean;
}
@Bean
public SecurityManager securityManager(){
DefaultWebSecurityManager securityManager =  new DefaultWebSecurityManager();
securityManager.setRealm(myShiroRealm());
return securityManager;
}
@Bean
public MyShiroRealm myShiroRealm(){
MyShiroRealm myShiroRealm = new MyShiroRealm();
return myShiroRealm;
}
/**
*  开启Shiro的注解(如@RequiresRoles,@RequiresPermissions),需借助SpringAOP扫描使用Shiro注解的类,并在必要时进行安全逻辑验证
* 配置以下两个bean(DefaultAdvisorAutoProxyCreator和AuthorizationAttributeSourceAdvisor)即可实现此功能
* @return
*/
@Bean
public DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator(){
DefaultAdvisorAutoProxyCreator advisorAutoProxyCreator = new DefaultAdvisorAutoProxyCreator();
advisorAutoProxyCreator.setProxyTargetClass(true);
return advisorAutoProxyCreator;
}
/**
* 开启aop注解支持
* @param securityManager
* @return
*/
@Bean
public AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor(SecurityManager securityManager) {
AuthorizationAttributeSourceAdvisor authorizationAttributeSourceAdvisor = new AuthorizationAttributeSourceAdvisor();
authorizationAttributeSourceAdvisor.setSecurityManager(securityManager);
return authorizationAttributeSourceAdvisor;
}
@Bean
public ShiroDialect shiroDialect() {
return new ShiroDialect();
}
}

4、写Realm

package com.zb.shiro;
import com.zb.model.Permission;
import com.zb.model.Role;
import com.zb.model.User;
import com.zb.service.UserService;
import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.apache.shiro.util.ByteSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import javax.annotation.Resource;
/**
*  身份校验核心类;
*
* @version v.0.1
*/
public class MyShiroRealm extends AuthorizingRealm{
private static final Logger logger = LoggerFactory.getLogger(MyShiroRealm.class);
private static String SALT = "mySlalt";
@Resource
private UserService userService;
/**
* 认证信息.(身份验证)
* :
* Authentication 是用来验证用户身份
* @param token
* @return
* @throws AuthenticationException
*/
@Override
protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
logger.info("MyShiroRealm.doGetAuthenticationInfo()");
//获取用户的输入的账号.
String username = (String)token.getPrincipal();
//通过username从数据库中查找 User对象，如果找到，没找到.
//实际项目中，这里可以根据实际情况做缓存，如果不做，Shiro自己也是有时间间隔机制，2分钟内不会重复执行该方法
User user = userService.selectByUsername(username);
logger.info("----->>userInfo=" + user.toString());
if(user == null){
return null;
}
/*
* 获取权限信息:这里没有进行实现，
* 请自行根据UserInfo,Role,Permission进行实现；
* 获取之后可以在前端for循环显示所有链接;
*/
//userInfo.setPermissions(userService.findPermissions(user));
userService.findRoleAndPermissions(user);
//账号判断;
//加密方式;
//交给AuthenticatingRealm使用CredentialsMatcher进行密码匹配，如果觉得人家的不好可以自定义实现
SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(
user, //用户名
user.getPassword(), //密码
ByteSource.Util.bytes(user.getUsername() + SALT),//salt=username+salt
getName()  //realm name
);
//明文: 若存在，将此用户存放到登录认证info中，无需自己做密码对比，Shiro会为我们进行密码对比校验
//      SimpleAuthenticationInfo authenticationInfo = new SimpleAuthenticationInfo(
//           userInfo, //用户名
//           userInfo.getPassword(), //密码
//             getName()  //realm name
//      );
return authenticationInfo;
}
/**
* 此方法调用  hasRole,hasPermission的时候才会进行回调.
*
* 权限信息.(授权):
* 1、如果用户正常退出，缓存自动清空；
* 2、如果用户非正常退出，缓存自动清空；
* 3、如果我们修改了用户的权限，而用户不退出系统，修改的权限无法立即生效。
* （需要手动编程进行实现；放在service进行调用）
* 在权限修改后调用realm中的方法，realm已经由spring管理，所以从spring中获取realm实例，
* 调用clearCached方法；
* :Authorization 是授权访问控制，用于对用户进行的操作授权，证明该用户是否允许进行当前操作，如访问某个链接，某个资源文件等。
* @param principals
* @return
*/
@Override
protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principals) {
logger.info("权限配置-->MyShiroRealm.doGetAuthorizationInfo()");
SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
User userInfo  = (User)principals.getPrimaryPrincipal();
///在认证成功之后返回.
//设置角色信息.
//支持 Set集合,
//用户的角色对应的所有权限
for(Role role:userInfo.getRoleList()){
authorizationInfo.addRole(role.getRolename());
for(Permission p:role.getPermissionList()){
authorizationInfo.addStringPermission(p.getPermission());
}
}
return authorizationInfo;
}}

5、自动生成那四个表的代码，加相关的

@Select("select * from Role where id in (select role_id from user_role where user_id = #{userId})")List<Role> selectRoleByUserId(@Param("userId") int userId);

@Select("select * from permission where id in (select permission_id from role_permission where role_id = #{roleId})")List<Permission> selectPermissionIdByRoleId(@Param("roleId") int roleId);

6、修改LoginController

修改登录方法

    @RequestMapping(value = "/login_in", method = RequestMethod.POST)
public String login_in(User user, HttpServletRequest request, Model model){
User user1 = userService.validateUser(user.getUsername(), user.getPassword());
if(user1 == null){
return "login";
}
// (1) session
//        HttpSession session = request.getSession();
//        session.setAttribute(session.getId(), user1);
//        return "redirect:/userlist";
// (3) shiro
String msg ;
UsernamePasswordToken token = new UsernamePasswordToken(user.getUsername(), user.getPassword());
token.setRememberMe(true);
Subject subject = SecurityUtils.getSubject();
try {
subject.login(token);
if (subject.isAuthenticated()) {
//shiro 的session和request的session封装的是一个，就是说两个都可以
//                request.getSession().setAttribute(request.getSession().getId(),user);
subject.getSession().setAttribute(subject.getSession().getId(),user);
return "redirect:/userlist";
} else {
return "login";
}
} catch (IncorrectCredentialsException e) {
msg = "登录密码错误. Password for account " + token.getPrincipal() + " was incorrect.";
model.addAttribute("message", msg);
System.out.println(msg);
} catch (ExcessiveAttemptsException e) {
msg = "登录失败次数过多";
model.addAttribute("message", msg);
System.out.println(msg);
} catch (LockedAccountException e) {
msg = "帐号已被锁定. The account for username " + token.getPrincipal() + " was locked.";
model.addAttribute("message", msg);
System.out.println(msg);
} catch (DisabledAccountException e) {
msg = "帐号已被禁用. The account for username " + token.getPrincipal() + " was disabled.";
model.addAttribute("message", msg);
System.out.println(msg);
} catch (ExpiredCredentialsException e) {
msg = "帐号已过期. the account for username " + token.getPrincipal() + "  was expired.";
model.addAttribute("message", msg);
System.out.println(msg);
} catch (UnknownAccountException e) {
msg = "帐号不存在. There is no user with username of " + token.getPrincipal();
model.addAttribute("message", msg);
System.out.println(msg);
} catch (UnauthorizedException e) {
msg = "您没有得到相应的授权！" + e.getMessage();
model.addAttribute("message", msg);
System.out.println(msg);
}
return "login";
}
@RequestMapping("/logout")
public String logout(HttpServletRequest request){
//        request.getSession().removeAttribute(request.getSession().getId());
SecurityUtils.getSubject().getSession().removeAttribute(SecurityUtils.getSubject().getSession().getId());
return "login";}

7、修改contorller方法，或者在页面里面加权限

@RequestMapping("https://segmentfault.com/userlist")@RequiresPermissions("user:list")

@RequestMapping("/userdelete")@RequiresPermissions("user:delete")

这种或者
页面上

<shiro:hasPermission name="user:delete"></shiro:hasPermission>

至此，权限就加好了

【Java】从零开始搭建SpringBoot项目

欢迎关注微信公众号：丰极，回复：springboot1，有项目的github地址。

以上是【Java】从零开始搭建SpringBoot项目的全部内容，来源链接： utcz.com/a/99460.html

【Java】从零开始搭建SpringBoot项目

一、新建springboot项目

1、

2、

3、此时项目结构

二、RestFul Api接口

1、在controller包下新建HomeController

三、集成Thymleaf

1、

2、写一个LoginController

3、加依赖

4、

四、集成mybatis

1、

2、添加依赖

3、建表

4、用mybatisgenerator自动生成文件

5、在pom里面添加plugin

6、用mvn mybatis-generator:generate -e命令生成文件

7、写dao和service,controller,mapper

8，在ZbookApplication上加上注解扫描

9、顺便把分页加上（依赖包之前已经加了）

五、简单登录，用filter实现

1、

2、在ZbookApplication上加注解

3、在LoginController下写登录逻辑

4、修改页面让页面显示用户名和退出

六、权限

1、加依赖包

2、建表

3、加载bean

4、写Realm

5、自动生成那四个表的代码，加相关的

6、修改LoginController

7、修改contorller方法，或者在页面里面加权限

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