SpringBoot

最新推荐文章于 2021-11-27 17:20:14 发布

敲着敲着头发没了

最新推荐文章于 2021-11-27 17:20:14 发布

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文章标签： shiro spring boot

本文链接：https://blog.youkuaiyun.com/weixin_46170033/article/details/107428484

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SpringBoot

约定大约配置

（Maven、Spring、SpringMVC、SpringBoot）

1、微服务

1.什么是微服务

微服务是一种架构风格，他要求我们在开发一个应用的时候，这个应用必须构建成一系列小服务的组合；

2、HelloWorld

导入Web依赖

这样就可以直接使用springboot自带的tomcat了

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

写一个Controller文件

controller包必须跟*Application.class在同一级别下

@RestController
public class HelloController {
    @RequestMapping("/hello")
    public String hello(){
        return "Hello World";
    }
}

启动服务器

运行*Application的主方法

可以在application.properties文件中设置端口号

#更改端口号
server.port=8081

测试

进入网页就可以

3、实现原理（自动装配，run方法）

不全，网上搜吧 -。-

自动配置：

pom.xml

spring-boot-dependencies ：核心依赖，在父工程中

引入SpringBoot的依赖的时候不需要指定版本号

启动器

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

启动器：说白了就是SpringBoot的启动场景
spring-boot-starter-web，他就会帮助我们自动导入web环境所有的依赖
springboot会将所有的功能场景，都变成一个个启动器

主程序

//标注这个类是一个springboot的应用
@SpringBootApplication
public class DemoApplication {
    public static void main(String[] args) {
        //利用反射，启动springboot
        SpringApplication.run(DemoApplication.class, args);
    }
}

SpringBootApplication

@SpringBootConfiguration：springboot的配置

@Configuration：spring配置类

@Component：说明这也是一个spring的组件
@EnableAutoConfiguration：自动配置

@AutoConfigurationPackage：自动配置包
```
  	@Import(AutoConfigurationPackages.Registrar.class)：导入选择器
```
@Import(AutoConfigurationImportSelector.class)：自动配置，导入选择

List configurations = getCandidateConfigurations(annotationMetadata, attributes);获取所有的配置

protected List<String> getCandidateConfigurations(AnnotationMetadata metadata, AnnotationAttributes attributes) {
   List<String> configurations = SpringFactoriesLoader.loadFactoryNames(getSpringFactoriesLoaderFactoryClass(),
         getBeanClassLoader());
   Assert.notEmpty(configurations, "No auto configuration classes found in META-INF/spring.factories. If you "
         + "are using a custom packaging, make sure that file is correct.");
   return configurations;
}

结论：SpringBoot的所有自动配置都是在启动的时候扫描并加载：spring.factories所有的自动配置类都在这里

，但不一定生效，倒入了start，就有了对应的启动器，自动装配就会生效。

4、Yaml配置文件的使用

@Component
public class Dog {
    private String name;
    private int age;
    //下面还有构造方法和get set
}

@Component
//指向yaml中创建的person对象
@ConfigurationProperties(prefix = "person")
public class Person {
    private String name;
    private int age;
    private boolean happy;
    private Date birthday;
    private Map<String,Object> maps;
    private List<String> lists;
    private Dog dog;
    }

person:
  #随机生成一个uuid
  name: dong${random.uuid}
  #随机生成一个整数
  age: ${random.int}
  happy: true
  birthday: 2020/7/12
  maps: {k1: v1,k2: v2}
  hello: Happy
  lists:
    - code
    - music
    - girl
  dog:
    #如果person.hello存在就直接显示，不存在使用hello
    name: ${person.hello:hello}_旺财
    age: 3

拓展

//指定properties文件
@PropertySource(value = "classpath:dong.properties")
public class Person {
    //从文件中取出值
    @Value("${name}")
    private String name;

JSR303校验

导入maven依赖

<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-validator</artifactId>
    <version>6.0.13.Final</version>
</dependency>

使用注解进行校验

@Validated
public class Person {
    @Email(message = "邮箱格式错误")
    private String name;
    }

JSR的注解

@Null							//被注释的元素必须为null
@NotNull						//被注释的元素必须部位null
@AssertTrue						//被注释的元素必须为true
@AssertFalse					//被注释的元素必须为false
@Min(value)						//被注释的必须是数字，必须大于等于最小值
@Max(value)						//被注释的必须是数字，必须大于等于最大值
@DecimalMin(value)				//被注释的必须是数字，必须大于等于最小值
@DecimalMax(value)				//被注释的必须是数字，必须大于等于最大值
@Size(max,min)					//被注释的元素大小必须在指定范围内
@Digits(integer,fraction)		//被注释的必须是数字，其值必须在指定范围内
@Past							//被注释的元素必须是一个过去的日期
@Future							//被注释的元素必须是一个将来的日期
@Pattern(value)					//被注释的元素必须必须符合指定的正则表达式

同时配置多套环境

server:
  port: 8081
spring:
  profiles:
    active: dev
---
server:
  port: 8082
spring:
  profiles: dev
---
server:
  port: 8083
spring:
  profiles: test

5、Web开发

静态资源可以存放的目录：

webjars
public，static，/**，resources

自定义配置文件

@Configuration
public class MyMvcConfig implements WebMvcConfigurer {
    @Override
    public void addViewControllers(ViewControllerRegistry registry) {
        registry.addViewController("/index.html").setViewName("index");
        registry.addViewController("/").setViewName("index");
        registry.addViewController("/main.html").setViewName("dashboard");
    }
}

6、Thymeleaf

在网页导入依赖

<html xmlns:th=http://www.thymeleaf.org>

语法

<div th:text="${msg}"></div>    <!--不会转义-->
<div th:utext="${msg}"></div>	<!--会转义-->
<hr>
<h3 th:each="user:${list}" th:text="${user}"></h3>  <!--遍历-->
<hr>
<h3 th:each="user:${list}">
    [[${user}]]
</h3>

7、国际化

配置i8n文件

自定义一个组件

public class MyLocalResolver implements LocaleResolver {
    @Override
    public Locale resolveLocale(HttpServletRequest request) {
        String language = request.getParameter("l");
        Locale locale = Locale.getDefault();
        if (!StringUtils.isEmpty(language)){
            String[] s = language.split("_");
            locale = new Locale(s[0], s[1]);
        }
        return locale;
    }

    @Override
    public void setLocale(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Locale locale) {

    }
}

把组件注入到@Bean中

@Bean
public LocaleResolver localeResolver(){
    return new MyLocalResolver();
}

前端请求

<a class="btn btn-sm" th:href="@{/index.html(l='zh_CN')}">中文</a>
<a class="btn btn-sm" th:href="@{/index.html(l='en_US')}">English</a>

数据显示

<!--#{}：进行数据显示-->
<h1 class="h3 mb-3 font-weight-normal" th:text="#{login.tip}">Please sign in</h1>

8、配置拦截器

实现HandlerInterceptor接口自定义拦截器

public class LoginHandler implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //登陆成功之后，应该有用户的session
        Object loginUser = request.getSession().getAttribute("loginUser");
        if (loginUser==null){
            request.setAttribute("msg","没有权限请先登录");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return false;
        }
        return true;
    }
}

将拦截器配置到Configuration

@Override
public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(new LoginHandler())
            .addPathPatterns("/**")
            .excludePathPatterns("/index.html","/","/user/login");
}

9、配置Druid数据源

1、导入Druid依赖和log4j的依赖

<!-- https://mvnrepository.com/artifact/com.alibaba/druid -->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>druid</artifactId>
    <version>1.1.23</version>
</dependency>
    
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

2、通过application.yaml文件配置Druid

spring:
  datasource:
    username: root
    password: 123456
    url: jdbc:mysql://localhost:3306/mybatis?useUnicode=true&characterEncoding=utf-8&serverTimezone=GMT%2B8
    driver-class-name: com.mysql.cj.jdbc.Driver
    #以下开始配置Druid
    type: com.alibaba.druid.pool.DruidDataSource
    maxPoolPreparedStatementPerConnectionSize: 20
    filters: stat,wall,log4j
    useGlobalDataSourceStat: true
    connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=500

3、通过配置类，配置监控页面

@Configuration
//相当于web.xml文件
public class DruidConfig {
    @ConfigurationProperties(prefix = "spring.datasource")
    @Bean
    public DataSource druidDataSource(){
        return new DruidDataSource();
    }
    //后台监控功能
    @Bean
    public ServletRegistrationBean statViewServlet(){
        ServletRegistrationBean<StatViewServlet> bean = new ServletRegistrationBean<>(new StatViewServlet(), "/druid/*");
        HashMap<String, String> initParameters = new HashMap<>();
        initParameters.put("loginUsername","root");
        initParameters.put("loginPassword","123456");
        bean.setInitParameters(initParameters);
        return bean;
    }
}

4、使用配置好的用户名和密码，登录配置的路径“/druid/**”

10、整合Mybatis

1、导入依赖

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.1.3</version>
</dependency>

2、创建包

正常创建mapper、pojo和controller包

但是我把mapper的xml文件放到resource下新建的mybatis下的mapper文件夹中

3、配置别名和扫描xml文件

在application.yaml中配置

mybatis:
  type-aliases-package: com.dong.pojo
  mapper-locations: classpath:mybatis/mapper/*.xml

4、写pojo类，和以前一样

5、写mapper接口

@Mapper
@Repository
public interface UserMapper {
    List<User> queryUserList();
    User queryUserById(@Param("id") Integer id);
    int updateUser(User user);
}

6、写mapper.xml和以前一样

11、SpringSecurity(安全)

几个类：

WebSecurityConfigurerAdapter：自定义Security策略
AuthenticationManagerBuilder：自定义认证策略
@EnableWebSecurity：开启WebSecurity模式

SpringSecurity的两个主要目标是“认证”和“授权”（访问控制）

“认证”：Authentication

“授权”：Authorization

1、导入依赖

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

2、编写配置类

@EnableWebSecurity
public class SerurityConfig extends WebSecurityConfigurerAdapter {
    //授权
    @Override
    protected void configure(HttpSecurity http) throws Exception {
       //首页所有人都可以访问，功能也只有对应有权限的人才能访问
        http.authorizeRequests()
                .antMatchers("/").permitAll()
                .antMatchers("/level1/**").hasRole("vip1")
                .antMatchers("/level2/**").hasRole("vip2")
                .antMatchers("/level3/**").hasRole("vip3");

     //没有权限到登录页
     //loginPage指定登录的页面
     //loginProcessingUrl指定登录提交的表单
     //usernameParameter指定前端用户名文本框的name属性
     //passwordParameter指定前端密码框的name属性
        http.formLogin().loginPage("/tologin").usernameParameter("user").passwordParameter("pwd").loginProcessingUrl("/login");
        //注销,成功跳转首页
        http.logout().logoutSuccessUrl("/");
        //开启记住我功能，默认保存两周
       //rememberMeParameter指定记住我复选框的name属性
        http.rememberMe().rememberMeParameter("remember");
    }
    //认证
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder())
                .withUser("dongdong").password(new BCryptPasswordEncoder().encode("123456")).roles("vip2","vip3")
                .and()
                .withUser("root").password(new BCryptPasswordEncoder().encode("123456")).roles("vip1","vip2")
                .and()
                .withUser("guest").password(new BCryptPasswordEncoder().encode("123456")).roles("vip1");
    }
}

3、根据不同的等级显示不同的页面

<!--导入命名空间xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4"
-->
<html xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity4">
<!--
sec:authorize="!isAuthenticated()"
判断是否登录
-->
<div sec:authorize="!isAuthenticated()">
<a class="item" th:href="@{/toLogin}" >
<i class="address card icon"></i> 登录
</a>
</div>
<div sec:authorize="isAuthenticated()">
 <a class="item">
     <!--sec:authentication="name"显示用户名-->
 用户名：<span sec:authentication="name"></span>
</a></div>
<!--sec:authorize="hasRole('vip1')"判断权限是否是vip1-->
<div class="column" sec:authorize="hasRole('vip1')">

12、Shiro

1、导入依赖

<!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-core -->
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-core</artifactId>
    <version>1.5.3</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/jcl-over-slf4j -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>jcl-over-slf4j</artifactId>
    <version>2.0.0-alpha1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/log4j/log4j -->
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.slf4j/slf4j-log4j12 -->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>2.0.0-alpha1</version>
</dependency>

2、配置文件

log4j.properties

log4j.rootLogger=INFO, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m %n

# General Apache libraries
log4j.logger.org.apache=WARN

# Spring
log4j.logger.org.springframework=WARN

# Default Shiro logging
log4j.logger.org.apache.shiro=INFO

# Disable verbose logging
log4j.logger.org.apache.shiro.util.ThreadContext=WARN
log4j.logger.org.apache.shiro.cache.ehcache.EhCache=WARN

shrio.ini

[users]
# user 'root' with password 'secret' and the 'admin' role
root = secret, admin
# user 'guest' with the password 'guest' and the 'guest' role
guest = guest, guest
# user 'presidentskroob' with password '12345' ("That's the same combination on
# my luggage!!!" ;)), and role 'president'
presidentskroob = 12345, president
# user 'darkhelmet' with password 'ludicrousspeed' and roles 'darklord' and 'schwartz'
darkhelmet = ludicrousspeed, darklord, schwartz
# user 'lonestarr' with password 'vespa' and roles 'goodguy' and 'schwartz'
lonestarr = vespa, goodguy, schwartz

# -----------------------------------------------------------------------------
# Roles with assigned permissions
#
# Each line conforms to the format defined in the
# org.apache.shiro.realm.text.TextConfigurationRealm#setRoleDefinitions JavaDoc
# -----------------------------------------------------------------------------
[roles]
# 'admin' role has all permissions, indicated by the wildcard '*'
admin = *
# The 'schwartz' role can do anything (*) with any lightsaber:
schwartz = lightsaber:*
# The 'goodguy' role is allowed to 'drive' (action) the winnebago (type) with
# license plate 'eagle5' (instance specific id)
goodguy = winnebago:drive:eagle5

QuickStart.class

import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
import org.apache.shiro.config.IniSecurityManagerFactory;
import org.apache.shiro.mgt.SecurityManager;
import org.apache.shiro.session.Session;
import org.apache.shiro.subject.Subject;
import org.apache.shiro.util.Factory;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;


/**
 * Simple Quickstart application showing how to use Shiro's API.
 *
 * @since 0.9 RC2
 */
public class QuickStart {

    private static final transient Logger log = LoggerFactory.getLogger(QuickStart.class);
    public static void main(String[] args) {

        // The easiest way to create a Shiro SecurityManager with configured
        // realms, users, roles and permissions is to use the simple INI config.
        // We'll do that by using a factory that can ingest a .ini file and
        // return a SecurityManager instance:

        // Use the shiro.ini file at the root of the classpath
        // (file: and url: prefixes load from files and urls respectively):
        Factory<SecurityManager> factory = new IniSecurityManagerFactory("classpath:shiro.ini");
        SecurityManager securityManager = factory.getInstance();

        // for this simple example quickstart, make the SecurityManager
        // accessible as a JVM singleton.  Most applications wouldn't do this
        // and instead rely on their container configuration or web.xml for
        // webapps.  That is outside the scope of this simple quickstart, so
        // we'll just do the bare minimum so you can continue to get a feel
        // for things.
        SecurityUtils.setSecurityManager(securityManager);

        // Now that a simple Shiro environment is set up, let's see what you can do:

        // get the currently executing user:
        Subject currentUser = SecurityUtils.getSubject();

        // Do some stuff with a Session (no need for a web or EJB container!!!)
        Session session = currentUser.getSession();
        session.setAttribute("someKey", "aValue");
        String value = (String) session.getAttribute("someKey");
        if (value.equals("aValue")) {
            log.info("Retrieved the correct value! [" + value + "]");
        }

        // let's login the current user so we can check against roles and permissions:
        if (!currentUser.isAuthenticated()) {
            UsernamePasswordToken token = new UsernamePasswordToken("lonestarr", "vespa");
            token.setRememberMe(true);
            try {
                currentUser.login(token);
            } catch (UnknownAccountException uae) {
                log.info("There is no user with username of " + token.getPrincipal());
            } catch (IncorrectCredentialsException ice) {
                log.info("Password for account " + token.getPrincipal() + " was incorrect!");
            } catch (LockedAccountException lae) {
                log.info("The account for username " + token.getPrincipal() + " is locked.  " +
                        "Please contact your administrator to unlock it.");
            }
            // ... catch more exceptions here (maybe custom ones specific to your application?
            catch (AuthenticationException ae) {
                //unexpected condition?  error?
            }
        }

        //say who they are:
        //print their identifying principal (in this case, a username):
        log.info("User [" + currentUser.getPrincipal() + "] logged in successfully.");

        //test a role:
        if (currentUser.hasRole("schwartz")) {
            log.info("May the Schwartz be with you!");
        } else {
            log.info("Hello, mere mortal.");
        }

        //test a typed permission (not instance-level)
        if (currentUser.isPermitted("lightsaber:wield")) {
            log.info("You may use a lightsaber ring.  Use it wisely.");
        } else {
            log.info("Sorry, lightsaber rings are for schwartz masters only.");
        }

        //a (very powerful) Instance Level permission:
        if (currentUser.isPermitted("winnebago:drive:eagle5")) {
            log.info("You are permitted to 'drive' the winnebago with license plate (id) 'eagle5'.  " +
                    "Here are the keys - have fun!");
        } else {
            log.info("Sorry, you aren't allowed to drive the 'eagle5' winnebago!");
        }

        //all done - log out!
        currentUser.logout();

        System.exit(0);
    }
}

Subject currentUser = SecurityUtils.getSubject();		 //创建subject
Session session = currentUser.getSession();				 //通过subject得到session
currentUser.login(token);								 //登录
currentUser.isAuthenticated()							 //是否被认证
currentUser.getPrincipal()								 //得到认证
currentUser.hasRole("schwartz")							 //是否有这个角色
currentUser.isPermitted("lightsaber:wield")				 //获得权限
currentUser.logout();									 //注销

13、Springboot整合Shiro

1、整合Mybatis

2、导入shiro-spring依赖

<!-- https://mvnrepository.com/artifact/org.apache.shiro/shiro-spring -->
<dependency>
    <groupId>org.apache.shiro</groupId>
    <artifactId>shiro-spring</artifactId>
    <version>1.5.3</version>
</dependency>

3、两个工具类

ShrioConfig.class

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;

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

@Configuration
public class ShrioConfig {

    //第三步：ShiroFilterFactoryBean
    @Bean
    public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("defaultWebSecurityManager") DefaultWebSecurityManager defaultWebSecurityManager) {
        ShiroFilterFactoryBean shiroFilterFactoryBean = new ShiroFilterFactoryBean();
        //设置安全管理器
        shiroFilterFactoryBean.setSecurityManager(defaultWebSecurityManager);
        //添加内置过滤器
        /*
         * anon：无需认证就可访问
         * authc：必须认证才能访问
         * user：必须拥有记住我功能才能访问
         * perms：拥有某个资源的权限才能访问
         * role：拥有某个角色权限才能访问
         * */
        Map<String, String> filterMap = new LinkedHashMap<>();
        filterMap.put("/user/add","perms[wen]");
        filterMap.put("/user/update","perms[sunxing]");
        filterMap.put("/user/*","authc");
        shiroFilterFactoryBean.setFilterChainDefinitionMap(filterMap);
        //拦截后跳转登录页面
        shiroFilterFactoryBean.setLoginUrl("/tologin");
        //未授权请求
        shiroFilterFactoryBean.setUnauthorizedUrl("/noauth");
        return shiroFilterFactoryBean;
    }

    //第二步：DefaultWebSecurityManager
    @Bean(name = "defaultWebSecurityManager")
    public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm") UserRealm userRealm) {
        DefaultWebSecurityManager defaultWebSecurityManager = new DefaultWebSecurityManager();
        //关联Realm
        defaultWebSecurityManager.setRealm(userRealm);
        return defaultWebSecurityManager;
    }

    //第一步：创建realm对象，需要自定义
    @Bean(name = "userRealm")
    public UserRealm userRealm() {
        return new UserRealm();
    }

    ;
}

UserRealm.class

import com.example.pojo.User;
import com.example.service.UserService;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.authc.*;
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.subject.Subject;
import org.springframework.beans.factory.annotation.Autowired;

public class UserRealm extends AuthorizingRealm {
    @Autowired
    private UserService userService;
    //授权
    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        System.out.println("执行了=》授权");
        SimpleAuthorizationInfo info = new SimpleAuthorizationInfo();
        info.addStringPermission("user:add");
        //拿到当前对象
        Subject subject = SecurityUtils.getSubject();
        User currentUser = (User) subject.getPrincipal();
        info.addStringPermission(currentUser.getUserCode());
        return info;
    }
    //认证
    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException {
        System.out.println("执行了=》认证");
        //用户名，密码
        UsernamePasswordToken userToken = (UsernamePasswordToken) token;
        User user = userService.queryByName(userToken.getUsername());
        if (user==null){
            return null;
        }
		Subject subject = SecurityUtils.getSubject();
        Session session = subject.getSession();
        session.setAttribute("loginUser",user);
        return new SimpleAuthenticationInfo(user,user.getUserPassword(),"");
    }
}

Controller中的登录模块

@RequestMapping("/login")
public String login(String username,String password,Model model){
    //获取当前用户
    Subject subject = SecurityUtils.getSubject();
    //封装用户登录数据
    UsernamePasswordToken token = new UsernamePasswordToken(username, password);
    try {
        subject.login(token);
        return "index";
    } catch (UnknownAccountException e) {
        //用户名不存在
        model.addAttribute("msg","用户名不存在");
        return "login";
    }catch (IncorrectCredentialsException e){
        model.addAttribute("msg","密码错误");
        return "login";
    }
}

14、Thymeleaf整合Shiro

1、导入依赖

<!-- https://mvnrepository.com/artifact/com.github.theborakompanioni/thymeleaf-extras-shiro -->
<dependency>
    <groupId>com.github.theborakompanioni</groupId>
    <artifactId>thymeleaf-extras-shiro</artifactId>
    <version>2.0.0</version>
</dependency>

2、在ShrioConfig.class中配置

//整合Shiro和Thymeleaf
@Bean
public ShiroDialect getShiroDialect(){
    return new ShiroDialect();
}

3、前端使用

<div shiro:hasPermission="wen">
<a  th:href="@{/user/add}">add</a>
</div>
<div shiro:hasPermission="sunxing">
<a th:href="@{/user/update}">update</a>
</div>
<div th:if="${session.loginUser==null}">
<a th:href="@{/tologin}">登录</a>
</div>
        //用户名不存在
        model.addAttribute("msg","用户名不存在");
        return "login";
    }catch (IncorrectCredentialsException e){
        model.addAttribute("msg","密码错误");
        return "login";
    }
}

14、Thymeleaf整合Shiro

1、导入依赖

<!-- https://mvnrepository.com/artifact/com.github.theborakompanioni/thymeleaf-extras-shiro -->
<dependency>
    <groupId>com.github.theborakompanioni</groupId>
    <artifactId>thymeleaf-extras-shiro</artifactId>
    <version>2.0.0</version>
</dependency>

2、在ShrioConfig.class中配置

//整合Shiro和Thymeleaf
@Bean
public ShiroDialect getShiroDialect(){
    return new ShiroDialect();
}

3、前端使用

<div shiro:hasPermission="wen">
<a  th:href="@{/user/add}">add</a>
</div>
<div shiro:hasPermission="sunxing">
<a th:href="@{/user/update}">update</a>
</div>
<div th:if="${session.loginUser==null}">
<a th:href="@{/tologin}">登录</a>
</div>