学习springboot的一些简单的笔记

程序员文章站 2022-05-03 23:49:33

添加的注解1、实体下(entity)@Data@AllArgsConstructor@NoArgsConstructor@ToString2、serviceImpl@Service@Transactional3、application下@MapperScan("com.zhage.dao")配置文件application例子server.port=8989server.servlet.context-path=/emsspring.datasource.type=com...

添加的注解

1、实体下(entity)

@Data
@AllArgsConstructor
@NoArgsConstructor
@ToString

2、serviceImpl

@Service
@Transactional

3、application下

@MapperScan("com.zhage.dao")

配置文件

application例子

server.port=8989
server.servlet.context-path=/ems

spring.datasource.type=com.alibaba.druid.pool.DruidDataSource
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/ems_thymeleaf?serverTimezone=UTC&characterEncodeing=UTF-8
spring.datasource.username=root
spring.datasource.password=654321

mybatis.mapper-locations=classpath:/com/zhage/mapper/*.xml
mybatis.type-aliases-package=com.zhage.entity

spring.resources.static-locations=classpath:/templates,classpath:/static/

xxxmapper.xml例子

<!DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.zhage.dao.EmpDAO">
    <select id="findAll" resultType="Emp">
        select id,name,salary,age,bir from t_emp
    </select>

    <select id="find" parameterType="String" resultType="Emp">
        select id,name,salary,age,bir from t_emp where id=#{id}
    </select>

    <insert id="save" parameterType="Emp">
        insert into t_emp values(#{id},#{name},#{salary},#{age},#{bir})
    </insert>

    <delete id="delete" parameterType="String">
        delete from t_emp where id=#{id}
    </delete>

    <update id="update" parameterType="Emp">
        update t_emp set name=#{name},salary=#{salary},age=#{age},bir=#{bir}
        where id=#{id}
    </update>
</mapper>

关于权限管理

核心API

Subject：用户主体（把操作交给SecurityManager）
SecurityManager：安全管理器（关联Realm）
Realm：Shiro连接数据的桥梁

自定义Realm类

package com.itheima.shiro;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

/**
 * 自定义Realm
 * @author lenovo
 *
 */
public class UserRealm extends AuthorizingRealm{

	/**
	 * 执行授权逻辑
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection arg0) {
		System.out.println("执行授权逻辑");
		return null;
	}

	/**
	 * 执行认证逻辑
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken arg0) throws AuthenticationException {
		System.out.println("执行认证逻辑");
		return null;
	}

}

编写shiro配置类

package com.itheima.shiro;

import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * Shiro的配置类
 * @author lenovo
 *
 */
@Configuration
public class ShiroConfig {

	/**
	 * 创建ShiroFilterFactoryBean
	 */
    @Bean
	public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager securityManager){
		ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
		
		//设置安全管理器
		shiroFilterFactoryBean.setSecurityManager(securityManager);
		
		return shiroFilterFactoryBean;
	}
	
	/**
	 * 创建DefaultWebSecurityManager
	 */
	@Bean(name="securityManager")
	public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm")UserRealm userRealm){
		DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
		//关联realm
		securityManager.setRealm(userRealm);
		return securityManager;
	}
	
	/**
	 * 创建Realm
	 */
	@Bean(name="userRealm")
	public UserRealm getRealm(){
		return new UserRealm();
	}
}

使用Shiro内置过滤器实现页面拦截

package com.itheima.shiro;

import java.util.LinkedHashMap;
import java.util.Map;

import org.apache.shiro.spring.web.ShiroFilterFactoryBean;
import org.apache.shiro.web.mgt.DefaultWebSecurityManager;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

/**
 * Shiro的配置类
 * @author lenovo
 *
 */
@Configuration
public class ShiroConfig {

	/**
	 * 创建ShiroFilterFactoryBean
	 */
	@Bean
	public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager securityManager){
		ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
		
		//设置安全管理器
		shiroFilterFactoryBean.setSecurityManager(securityManager);
		
		//添加Shiro内置过滤器
		/**
		 * Shiro内置过滤器，可以实现权限相关的拦截器
		 *    常用的过滤器：
		 *       anon: 无需认证（登录）可以访问
		 *       authc: 必须认证才可以访问
		 *       user: 如果使用rememberMe的功能可以直接访问
		 *       perms： 该资源必须得到资源权限才可以访问
		 *       role: 该资源必须得到角色权限才可以访问
		 */
		Map<String,String> filterMap = new LinkedHashMap<String,String>();
		/*filterMap.put("/add", "authc");
		filterMap.put("/update", "authc");*/
		
		filterMap.put("/testThymeleaf", "anon");
		
		filterMap.put("/*", "authc");
		
		//修改调整的登录页面
		shiroFilterFactoryBean.setLoginUrl("/toLogin");
		
		shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
		
		
		return shiroFilterFactoryBean;
	}
	
	/**
	 * 创建DefaultWebSecurityManager
	 */
	@Bean(name="securityManager")
	public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm")UserRealm userRealm){
		DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager();
		//关联realm
		securityManager.setRealm(userRealm);
		return securityManager;
	}
	
	/**
	 * 创建Realm
	 */
	@Bean(name="userRealm")
	public UserRealm getRealm(){
		return new UserRealm();
	}
}

实现用户认证（登录）操作

设计登录页面

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>登录页面</title>
</head>
<body>
<h3>登录</h3>
<form method="post" action="login">
	用户名:<input type="text" name="name"/><br/>
	密码：<input type="password" name="password"/><br/>
	<input type="submit" value="登录"/>
</form>
</body>
</html>

4.4.2.编写Controller的登录逻辑

/**
	 * 登录逻辑处理
	 */
	@RequestMapping("/login")
	public String login(String name,String password,Model model){
		
		/**
		 * 使用Shiro编写认证操作
		 */
		//1.获取Subject
		Subject subject = SecurityUtils.getSubject();
		
		//2.封装用户数据
		UsernamePasswordToken token = new UsernamePasswordToken(name,password);
		
		//3.执行登录方法
		try {
			subject.login(token);
			
			//登录成功
			//跳转到test.html
			return "redirect:/testThymeleaf";
		} catch (UnknownAccountException e) {
			//e.printStackTrace();
			//登录失败:用户名不存在
			model.addAttribute("msg", "用户名不存在");
			return "login";
		}catch (IncorrectCredentialsException e) {
			//e.printStackTrace();
			//登录失败:密码错误
			model.addAttribute("msg", "密码错误");
			return "login";
		}
	}

编写Realm的判断逻辑

package com.itheima.shiro;

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.authc.UsernamePasswordToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

/**
 * 自定义Realm
 * @author lenovo
 *
 */
public class UserRealm extends AuthorizingRealm{

	/**
	 * 执行授权逻辑
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection arg0) {
		System.out.println("执行授权逻辑");
		return null;
	}

	/**
	 * 执行认证逻辑
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken arg0) throws AuthenticationException {
		System.out.println("执行认证逻辑");
		
		//假设数据库的用户名和密码
		String name = "eric";
		String password = "123456";
		
		//编写shiro判断逻辑，判断用户名和密码
		//1.判断用户名
		UsernamePasswordToken token = (UsernamePasswordToken)arg0;
		if(!token.getUsername().equals(name)){
			//用户名不存在
			return null;//shiro底层会抛出UnKnowAccountException
		}
		
		//2.判断密码
		return new SimpleAuthenticationInfo("",password,"");
	}

}

与mybait整合

编写user实例

package com.itheima.domain;

public class User {
	private Integer id;
	private String name;
	private String password;
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getPassword() {
		return password;
	}
	public void setPassword(String password) {
		this.password = password;
	}
	
}

编写UserMapper接口

package com.itheima.mapper;

import com.itheima.domain.User;

public interface UserMapper {

	public User findByName(String name);
}

编写UserMapper.xml映射文件

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<!-- 该文件存放CRUD的sql语句 -->
<mapper namespace="com.itheima.mapper.UserMapper">
	
	<select id="findByName" parameterType="string" resultType="user">
	SELECT 	id, 
		NAME, 
		PASSWORD
		FROM 
		user where name = #{value}
	</select>
</mapper>

编写业务接口和实现

接口

package com.itheima.service;

import com.itheima.domain.User;

public interface UserService {

	public User findByName(String name);
}

实现

package com.itheima.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.itheima.domain.User;
import com.itheima.mapper.UserMapper;
import com.itheima.service.UserService;

@Service
public class UserServiceImpl implements UserService{

	//注入Mapper接口
	@Autowired
	private UserMapper userMapper;
	
	@Override
	public User findByName(String name) {
		return userMapper.findByName(name);
	}

	
}

修改UserRealm

package com.itheima.shiro;

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.authc.UsernamePasswordToken;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;
import org.springframework.beans.factory.annotation.Autowired;

import com.itheima.domain.User;
import com.itheima.service.UserService;

/**
 * 自定义Realm
 * @author lenovo
 *
 */
public class UserRealm extends AuthorizingRealm{

	/**
	 * 执行授权逻辑
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection arg0) {
		System.out.println("执行授权逻辑");
		return null;
	}
	
	@Autowired
	private UserService userSerivce;

	/**
	 * 执行认证逻辑
	 */
	@Override
	protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken arg0) throws AuthenticationException {
		System.out.println("执行认证逻辑");
		
		//编写shiro判断逻辑，判断用户名和密码
		//1.判断用户名
		UsernamePasswordToken token = (UsernamePasswordToken)arg0;
		
		User user = userSerivce.findByName(token.getUsername());
		
		if(user==null){
			//用户名不存在
			return null;//shiro底层会抛出UnKnowAccountException
		}
		
		//2.判断密码
		return new SimpleAuthenticationInfo("",user.getPassword(),"");
	}

}

Spring Boot与Shiro整合实现用户授权

5.1.使用Shiro内置过滤器拦截资源

/**
	 * 创建ShiroFilterFactoryBean
	 */
	@Bean
	public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager securityManager){
		ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
		
		//设置安全管理器
		shiroFilterFactoryBean.setSecurityManager(securityManager);
		
		//添加Shiro内置过滤器
		/**
		 * Shiro内置过滤器，可以实现权限相关的拦截器
		 *    常用的过滤器：
		 *       anon: 无需认证（登录）可以访问
		 *       authc: 必须认证才可以访问
		 *       user: 如果使用rememberMe的功能可以直接访问
		 *       perms： 该资源必须得到资源权限才可以访问
		 *       role: 该资源必须得到角色权限才可以访问
		 */
		Map<String,String> filterMap = new LinkedHashMap<String,String>();
		/*filterMap.put("/add", "authc");
		filterMap.put("/update", "authc");*/
		
		filterMap.put("/testThymeleaf", "anon");
		//放行login.html页面
		filterMap.put("/login", "anon");
		
		//授权过滤器
		//注意：当前授权拦截后，shiro会自动跳转到未授权页面
		filterMap.put("/add", "perms[user:add]");
		
		filterMap.put("/*", "authc");
		
		//修改调整的登录页面
		shiroFilterFactoryBean.setLoginUrl("/toLogin");
		//设置未授权提示页面
		shiroFilterFactoryBean.setUnauthorizedUrl("/noAuth");
		
		shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
		
		
		return shiroFilterFactoryBean;
	}

完成Shiro的资源授权

UserRealm：

/**
	 * 执行授权逻辑
	 */
	@Override
	protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection arg0) {
		System.out.println("执行授权逻辑");
		
		//给资源进行授权
		SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
		
		//添加资源的授权字符串
		info.addStringPermission("user:add");
		
		return info;
	}

thymeleaf和shiro标签整合使用

6.2.配置ShiroDialect

在ShiroConfig类里面添加getShiroDialect方法

/**
	 * 配置ShiroDialect，用于thymeleaf和shiro标签配合使用
	 */
	@Bean
	public ShiroDialect getShiroDialect(){
		return new ShiroDialect();
	}

6.3.在页面上使用shiro标签

<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>测试Thymeleaf的使用</title>
</head>
<body>
<h3 th:text="${name}"></h3>

<hr/>
<div shiro:hasPermission="user:add">
进入用户添加功能： <a href="add">用户添加</a><br/>
</div>
<div shiro:hasPermission="user:update">
进入用户更新功能： <a href="update">用户更新</a><br/>
</div>
<a href="toLogin">登录</a>
</body>
</html>

本文地址：https://blog.csdn.net/haa252259386/article/details/109268316