定时任务 定时任务1、SpringBoot启动类开启定时任务注解package com.sw; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.scheduling.annotation.EnableAsync; import org.springframework.scheduling.annotation.EnableScheduling; @EnableScheduling //开启定时任务 @SpringBootApplication public class Springboot09AsynctaskApplication { public static void main(String[] args) { SpringApplication.run(Springboot09AsynctaskApplication.class, args); } } 2、测试package com.sw.service; import org.springframework.scheduling.annotation.Scheduled; import org.springframework.stereotype.Service; /** * @Author suaxi * @Date 2020/12/26 17:35 * 定时任务 */ @Service public class ScheduledService { /* cron:秒 分 时 日 月 周几 0/3 * * * * 0-7 周一到周日每三秒执行一次 0 0 21 26 12 ? 12月26日21时执行 */ @Scheduled(cron = "0/3 * * * * 0-7") public void hello(){ System.out.println("抽象！"); } } 注：定时任务需使用cron表达式来源：cron百度百科 0 0 2 1 * ? * 表示在每月的1日的凌晨2点调度任务 0 15 10 ? * MON-FRI 表示周一到周五每天上午10：15执行作业 0 15 10 ? * 6L 2002-2006 表示2002-2006年的每个月的最后一个星期五上午10:15执行作 0 0 10,14,16 * * ? 每天上午10点，下午2点，4点 0 0/30 9-17 * * ? 朝九晚五工作时间内每半小时 0 0 12 ? * WED 表示每个星期三中午12点 "0 0 12 * * ?" 每天中午12点触发 "0 15 10 ? * *" 每天上午10:15触发 "0 15 10 * * ?" 每天上午10:15触发 "0 15 10 * * ? *" 每天上午10:15触发 "0 15 10 * * ? 2005" 2005年的每天上午10:15触发 "0 * 14 * * ?" 在每天下午2点到下午2:59期间的每1分钟触发 "0 0/5 14 * * ?" 在每天下午2点到下午2:55期间的每5分钟触发 "0 0/5 14,18 * * ?" 在每天下午2点到2:55期间和下午6点到6:55期间的每5分钟触发 "0 0-5 14 * * ?" 在每天下午2点到下午2:05期间的每1分钟触发 "0 10,44 14 ? 3 WED" 每年三月的星期三的下午2:10和2:44触发 "0 15 10 ? * MON-FRI" 周一至周五的上午10:15触发 "0 15 10 15 * ?" 每月15日上午10:15触发 "0 15 10 L * ?" 每月最后一日的上午10:15触发 "0 15 10 ? * 6L" 每月的最后一个星期五上午10:15触发 "0 15 10 ? * 6L 2002-2005" 2002年至2005年的每月的最后一个星期五上午10:15触发 "0 15 10 ? * 6#3" 每月的第三个星期五上午10:15触发

SpringBoot邮件发送 邮件发送1、application配置spring: mail: host: smtp.qq.com username: xxx@qq.com password: 123456 #qq邮箱需设置安全加密 properties.mail.smtp.ssl.enable: true注：1、host：邮件发送服务器2、username：邮箱地址3、password：密码4、使用QQ邮箱时，需设置安全加密2、Junit单元测试package com.sw; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.mail.SimpleMailMessage; import org.springframework.mail.javamail.JavaMailSenderImpl; import org.springframework.mail.javamail.MimeMessageHelper; import javax.mail.MessagingException; import javax.mail.internet.MimeMessage; import java.io.File; @SpringBootTest class Springboot09AsynctaskApplicationTests { @Autowired JavaMailSenderImpl mailSender; @Test void mailTest() { //简单邮件 SimpleMailMessage mailMessage = new SimpleMailMessage(); //标题 mailMessage.setSubject("Test"); //正文 mailMessage.setText("SpringBoot Mail Test"); //收件人 mailMessage.setTo("xxx@gmail.com"); //发件人 mailMessage.setFrom("xxx@qq.com"); mailSender.send(mailMessage); } @Test public void mailTest02() throws MessagingException { //复杂邮件测试 MimeMessage mimeMessage = mailSender.createMimeMessage(); //组装 MimeMessageHelper helper = new MimeMessageHelper(mimeMessage, true); //正文 helper.setSubject("哈尼"); helper.setText("<p style='color:red'>这是一封SpringBoot-mail测试邮件</p>",true); //开启html支持 //附件 helper.addAttachment("hani.png",new File("xxx/hani.png")); //绝对路径 helper.setTo("568362762@qq.com"); helper.setFrom("281463547@qq.com"); mailSender.send(mimeMessage); } } 注：如需发送附件，需填写绝对路径的地址

异步任务 异步任务1、Servicepackage com.sw.service; import org.springframework.scheduling.annotation.Async; import org.springframework.stereotype.Service; /** * @Author suaxi * @Date 2020/12/26 15:57 */ @Service public class AsyncService { //告诉Spring这是一个异步任务 @Async public void hello(){ try { Thread.sleep(3000); } catch (InterruptedException e) { e.printStackTrace(); } System.out.println("数据正在加载..."); } } 2、Controllerpackage com.sw.controller; import com.sw.service.AsyncService; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; /** * @Author suaxi * @Date 2020/12/26 15:58 */ @RestController public class AsyncController { @Autowired private AsyncService asyncService; @RequestMapping("/test") public String hello(){ asyncService.hello(); return "Ok"; } } 3、SpringBoot启动类开启异步任务的注解package com.sw; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.scheduling.annotation.EnableAsync; import org.springframework.scheduling.annotation.EnableScheduling; @EnableAsync //开启异步任务注解 @SpringBootApplication public class Springboot09AsynctaskApplication { public static void main(String[] args) { SpringApplication.run(Springboot09AsynctaskApplication.class, args); } } 当用户执行/test请求时，前端页面及时返回结果，同时异步任务延迟三秒在控制台打印输出结果

Swagger SwaggerSwagger 是一个规范和完整的框架，用于生成、描述、调用和可视化 RESTful 风格的 Web 服务。1、导入依赖<dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger2</artifactId> <version>2.9.2</version> </dependency> <dependency> <groupId>io.springfox</groupId> <artifactId>springfox-swagger-ui</artifactId> <version>2.9.2</version> </dependency>2、SwaggerConfig配置package com.sw.swagger.config; import org.springframework.context.annotation.Bean; import org.springframework.context.annotation.Configuration; import org.springframework.core.env.Environment; import org.springframework.core.env.Profiles; import springfox.documentation.builders.PathSelectors; import springfox.documentation.builders.RequestHandlerSelectors; import springfox.documentation.service.ApiInfo; import springfox.documentation.service.Contact; import springfox.documentation.spi.DocumentationType; import springfox.documentation.spring.web.plugins.Docket; import springfox.documentation.swagger2.annotations.EnableSwagger2; import java.util.ArrayList; /** * @Author suaxi * @Date 2020/12/26 11:03 */ @Configuration @EnableSwagger2 public class SwaggerConfig { //配置Swagger的Docket @Bean public Docket docket(Environment environment) { //配置哪种环境下需要启用Swagger Profiles profiles = Profiles.of("dev", "test"); //监听配置文件 boolean flag = environment.acceptsProfiles(profiles); //链式编程 return new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) .enable(flag) //配置是否启动Swagger，默认为true，如需关闭须手动设置为false .select() //RequestHandlerSelectors 配置扫描接口的方式 //basePackage() 指定要扫描的包 //any() 扫描全部 //none() 不扫描 //withClassAnnotation(Controller.class) 扫描类注解(参数是一个注解的反射对象) //withMethodAnnotation(RequestMapping.class) 扫描方法上的注解 .apis(RequestHandlerSelectors.basePackage("com.sw.swagger.controller")) //paths() 过滤的路径 .paths(PathSelectors.ant("/**")) .build(); } //配置Swagger apiInfo private ApiInfo apiInfo(){ //作者信息 Contact contact = new Contact("suaix","http://wangchouchou.com","281463547@qq.com"); return new ApiInfo( "Swagger StudyDemo", "SwaggerStudy", "1.0", "http://wangchouchou.com", contact, "Apache 2.0", "http://www.apache.org/licenses/LICENSE-2.0", new ArrayList()); } } Docket配置//配置Swagger的Docket @Bean public Docket docket(Environment environment) { //配置哪种环境下需要启用Swagger Profiles profiles = Profiles.of("dev", "test"); //监听配置文件 boolean flag = environment.acceptsProfiles(profiles); //链式编程 return new Docket(DocumentationType.SWAGGER_2) .apiInfo(apiInfo()) .enable(flag) //配置是否启动Swagger，默认为true，如需关闭须手动设置为false .select() //RequestHandlerSelectors 配置扫描接口的方式 //basePackage() 指定要扫描的包 //any() 扫描全部 //none() 不扫描 //withClassAnnotation(Controller.class) 扫描类注解(参数是一个注解的反射对象) //withMethodAnnotation(RequestMapping.class) 扫描方法上的注解 .apis(RequestHandlerSelectors.basePackage("com.sw.swagger.controller")) //paths() 过滤的路径 .paths(PathSelectors.ant("/**")) .build(); }配置什么环境下需要使用Swagger通过监听配置文件实现//配置那种环境下需要启用Swagger Profiles profiles = Profiles.of("dev", "test"); //监听配置文件 boolean flag = environment.acceptsProfiles(profiles); 3、配置文档分组.groupName("Demo")如何配置实现多个分组？配置多个Docket实例即可4、实体类package com.sw.swagger.pojo; import io.swagger.annotations.Api; import io.swagger.annotations.ApiModel; import io.swagger.annotations.ApiModelProperty; /** * @Author suaxi * @Date 2020/12/26 14:39 */ //@Api("用户实体类") @ApiModel("用户实体类") public class User { @ApiModelProperty("用户名") public String username; @ApiModelProperty("密码") public String password; } 5、Controllerpackage com.sw.swagger.controller; import com.sw.swagger.pojo.User; import io.swagger.annotations.ApiOperation; import io.swagger.annotations.ApiParam; import org.springframework.web.bind.annotation.GetMapping; import org.springframework.web.bind.annotation.PostMapping; import org.springframework.web.bind.annotation.RestController; /** * @Author suaxi * @Date 2020/12/26 10:59 */ @RestController public class HelloController { @ApiOperation("POST测试") @PostMapping("/hello") public String helloTest(@ApiParam("用户名") String username){ return "swagger-springboot"; } @ApiOperation("返回User对象") @PostMapping("/u") public User user(){ return new User(); } @ApiOperation("Hello控制类") @GetMapping("/h") public String hello(){ return "swagger-springboot"; } } 小结：1、通过Swagger可以给一些难以理解的属性或接口添加注释信息2、接口文档实时更新3、在线测试

Shiro Shiro1、导入依赖<dependency> <groupId>org.apache.shiro</groupId> <artifactId>shiro-spring</artifactId> <version>1.4.1</version> </dependency>2、Config配置UserRealm：package com.sw.config; import com.sw.pojo.User; import com.sw.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.session.Session; import org.apache.shiro.subject.PrincipalCollection; import org.apache.shiro.subject.Subject; import org.springframework.beans.factory.annotation.Autowired; /** * @Author suaxi * @Date 2020/12/24 16:56 */ //自定义UserRealm public class UserRealm extends AuthorizingRealm { @Autowired private UserService userService; @Override protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) { System.out.println("执行了===》授权doGetAuthorizationInfo"); SimpleAuthorizationInfo info = new SimpleAuthorizationInfo(); info.addStringPermission("user:add"); //获得当前登录的对象 Subject subject = SecurityUtils.getSubject(); User currentUser = (User) subject.getPrincipal(); //拿到user对象 //设置当前用户的权限 info.addStringPermission(currentUser.getPerms()); return info; } @Override protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken token) throws AuthenticationException { System.out.println("执行了===》认证doGetAuthorizationInfo"); UsernamePasswordToken userToken = (UsernamePasswordToken) token; //从数据库查询用户信息 User user = userService.findUserByName(userToken.getUsername()); if (user==null){ //用户为空 return null; //抛出 UnknownAccountException 异常 } //设置session Subject subject = SecurityUtils.getSubject(); Session session = subject.getSession(); session.setAttribute("loginUser",user); //密码认证由shiro做 return new SimpleAuthenticationInfo(user,user.getPassword(),""); } } ShiroConfig:package com.sw.config; import at.pollux.thymeleaf.shiro.dialect.ShiroDialect; 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.LinkedHashMap; import java.util.Map; /** * @Author suaxi * @Date 2020/12/24 16:54 */ @Configuration public class ShiroConfig { //3、ShiroFilterFactoryBean @Bean public ShiroFilterFactoryBean getShiroFilterFactoryBean(@Qualifier("securityManager")DefaultWebSecurityManager defaultWebSecurityManager){ ShiroFilterFactoryBean bean = new ShiroFilterFactoryBean(); //设置安全管理器 bean.setSecurityManager(defaultWebSecurityManager); //添加shiro的内置过滤器 /* anon：无需认证 authc：必须认证 user：必须有 “记住我” 功能才可以访问 perms：拥有对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/update","perms[user:update]"); filterMap.put("/user/add","perms[user:add]"); filterMap.put("/logout","logout"); //注销 filterMap.put("/user/*","authc"); bean.setFilterChainDefinitionMap(filterMap); //设置登录请求 bean.setLoginUrl("/toLogin"); //未授权页面 bean.setUnauthorizedUrl("/noauth"); return bean; } //2、DefaultWebSecurityManager @Bean(name = "securityManager") public DefaultWebSecurityManager getDefaultWebSecurityManager(@Qualifier("userRealm")UserRealm userRealm){ DefaultWebSecurityManager securityManager = new DefaultWebSecurityManager(); //关联UserRealm securityManager.setRealm(userRealm); return securityManager; } //1、创建Realm对象 @Bean public UserRealm userRealm(){ return new UserRealm(); } //整合ShiroDialect shiro-thymeleaf @Bean public ShiroDialect getShiroDialect(){ return new ShiroDialect(); } }

SpringSecurity SpringSecurity1、导入依赖<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-security</artifactId> </dependency>2、Config配置package com.sw.config; import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder; import org.springframework.security.config.annotation.web.builders.HttpSecurity; import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity; import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter; import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder; /** * @Author suaxi * @Date 2020/12/24 14:45 */ @EnableWebSecurity public class SercurityConfig extends WebSecurityConfigurerAdapter { //授权 @Override protected void configure(HttpSecurity http) throws Exception { //首页所有人可以访问，功能页需要权限才能访问 //请求授权规则 http.authorizeRequests() .antMatchers("/").permitAll() .antMatchers("/level1/*").hasRole("vip1") .antMatchers("/level2/*").hasRole("vip2") .antMatchers("/level3/*").hasRole("vip3"); //没有权限，默认跳转到登录页 //自定义登录页 http.formLogin().loginPage("/toLogin").loginProcessingUrl("/login"); http.csrf().disable(); //注销 http.logout().logoutSuccessUrl("/"); //开启记住我 //自定义rememberMe http.rememberMe().rememberMeParameter("remember"); } //认证 @Override protected void configure(AuthenticationManagerBuilder auth) throws Exception { //在内存中虚拟用户 auth.inMemoryAuthentication().passwordEncoder(new BCryptPasswordEncoder()) .withUser("1").password(new BCryptPasswordEncoder().encode("1")).roles("vip1") .and() .withUser("2").password(new BCryptPasswordEncoder().encode("1")).roles("vip2") .and() .withUser("3").password(new BCryptPasswordEncoder().encode("1")).roles("vip3") .and() .withUser("root").password(new BCryptPasswordEncoder().encode("1")).roles("vip1","vip2","vip3"); } }

yaml配置 yaml配置文件application.properties语法结构：key=valueapplication.yaml语法结构：key：空格 valueyamlYAML是"YAML Ain't a Markup Language"（YAML不是一种标记语言）的递归缩写。基本语法：# k=v name: test #对象 student: name: test age: 3 #行内写法 student1: {name: test,age: 3} #数组 students: -test1 -test2 -test3 students1: [test1,test2,test3]注入配置文件1、导入配置文件的依赖<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-configuration-processor</artifactId> <optional>true</optional> </dependency>2、yaml配置文件person: name: test age: 3 happy: false birth: 2020/12/22 map: {k: v,k1: v1} list: -code -girl dog: name: test age: 33、实体类package com.sw.pojo; import lombok.AllArgsConstructor; import lombok.Data; import lombok.NoArgsConstructor; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; import java.util.Date; import java.util.List; import java.util.Map; /** * @Author suaxi * @Date 2020/12/22 10:38 */ @Data @AllArgsConstructor @NoArgsConstructor @Component //注册Bean @ConfigurationProperties(prefix = "person") public class Person { private String name; private int age; private Boolean happy; private Date birth; private Map<String,Object> map; private List<Object> list; private Dog dog; } @ConfigurationProperties的作用：将配置文件中配置的每一个属性的值，映射到这个组件中，参数prefix = "person"，将配置文件中person下的所有属性一一对应补充：通过properties注入属性@PropertySource(value = "classpath:application.properties")properties与yaml对比 @ConfigurationProperties@value功能批量注入配置文件中的属性需单个一一指定松散绑定是否SPEL表达式否是JSR303校验是否复杂类型封装是否松散绑定：yaml中写的是last-name，实体类中写的是lastName，值依然能注入，yaml中 - 后面的第一个字母默认大写JSR303校验：JSR是Java Specification Requests的缩写，意思是Java 规范提案。使用时须在实体类前加上注解 @Validated //JSR303校验

JSON JSONJSON(JavaScript Object Notation，JS标记对象)是一种轻量级的数据交换格式。1、jackson导入依赖<dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.12.0</version> </dependency>Utils工具类package com.sw.utils; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.SerializationFeature; import java.text.SimpleDateFormat; /** * @Author suaxi * @Date 2020/12/17 16:08 */ public class JsonUtils { public static String getJson(Object object){ return getJson(object,"yyyy-MM-dd HH:mm:ss"); } public static String getJson(Object object,String dateFormate){ ObjectMapper mapper = new ObjectMapper(); //不使用时间戳 mapper.configure(SerializationFeature.WRITE_DATES_AS_TIMESTAMPS,false); //自定义时间格式 SimpleDateFormat sdf = new SimpleDateFormat(dateFormate); mapper.setDateFormat(sdf); try { return mapper.writeValueAsString(object); } catch (JsonProcessingException e) { e.printStackTrace(); } return null; } } Controllerpackage com.sw.controller; import com.alibaba.fastjson.JSON; import com.fasterxml.jackson.core.JsonProcessingException; import com.fasterxml.jackson.databind.ObjectMapper; import com.sw.pojo.User; import com.sw.utils.JsonUtils; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import java.util.ArrayList; import java.util.Date; import java.util.List; /** * @Author suaxi * @Date 2020/12/17 15:38 */ //@Controller @RestController public class UserController { @RequestMapping("/j1") //@ResponseBody //不会走视图解析器，直接返回一个字符串 public String test01() throws JsonProcessingException { //jackson ObjectMapper ObjectMapper mapper = new ObjectMapper(); User user = new User("孙笑川", 33, "男"); String s = mapper.writeValueAsString(user); return s; } @RequestMapping("/j2") public String test02() throws JsonProcessingException { List<User> userList = new ArrayList<User>(); User user1 = new User("孙笑川1", 33, "男"); User user2 = new User("孙笑川2", 33, "男"); User user3 = new User("孙笑川3", 33, "男"); userList.add(user1); userList.add(user3); userList.add(user2); return JsonUtils.getJson(userList); } @RequestMapping("/j3") public String test03() throws JsonProcessingException { return JsonUtils.getJson(new Date()); } } 2、fastjson<dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.75</version> </dependency>Controllerpackage com.sw.controller; import com.alibaba.fastjson.JSON; import com.sw.pojo.User; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RestController; import java.util.ArrayList; import java.util.List; /** * @Author suaxi * @Date 2020/12/17 15:38 */ //@Controller @RestController public class UserController { @RequestMapping("/j4") public String test04(){ List<User> userList = new ArrayList<User>(); User user1 = new User("孙笑川1", 33, "男"); User user2 = new User("孙笑川2", 33, "男"); User user3 = new User("孙笑川3", 33, "男"); userList.add(user1); userList.add(user3); userList.add(user2); String s = JSON.toJSONString(userList); return s; } }