1、配置文件总结(更新中)
# 服务端口
server:
port: 8001
# 服务名
spring:
application:
name: service-edu
# 环境设置
profiles:
active: dev
servlet:
multipart:
# 最大上传单个文件大小:默认1M
max-file-size: 1024MB
# 最大置总上传的数据大小 :默认10M
max-request-size: 1024MB
# MySQL数据库连接
datasource:
driver-class-name: com.mysql.cj.jdbc.Driver
url: jdbc:mysql://localhost:3306/guli?serverTimezone=GMT%2B8
username: root
password: root
#返回json的全局时间格式
jackson:
date-format: yyyy-MM-dd HH:mm:ss
time-zone: GMT+8
# nacos服务地址
cloud:
nacos:
discovery:
server-addr: 127.0.0.1:8848
# mybatis日志
mybatis-plus:
configuration:
log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
#配置mapper xml文件的路径
mapper-locations: classpath:com/cqupt/mapper/xml/*.xml
#阿里云 OSS
#不同的服务器,地址不同
aliyun:
oss:
file:
endpoint: oss-cn-chengdu.aliyuncs.com
keyid: LTAI4GKsV94rbzAC9wApMQpg
keysecret: 0AW5S5b1UqhylFCv7isypbBGwTnFgR
bucketname: edu-cq
vod:
file:
keyid: LTAI4GKsV94rbzAC9wApMQpg
keysecret: 0AW5S5b1UqhylFCv7isypbBGwTnFgR
#开启熔断机制
feign:
hystrix:
enabled: true
# 设置hystrix超时时间,默认1000ms
hystrix:
command:
default:
execution:
isolation:
thread:
timeoutInMilliseconds: 6000
2、创建时间、更新时间自动填充
项目中经常会遇到一些数据,每次都使用相同的方式填充,例如记录的创建时间,更新时间等。
我们可以使用 Mybatis Plus 的自动填充功能,完成这些字段的赋值工作:
-
数据库表中添加自动填充字段
在User表中添加datetime类型的新的字段 create_time、update_time
-
实体上添加注解
@Data public class User { @TableField(fill = FieldFill.INSERT) private Date createTime; @TableField(fill = FieldFill.INSERT_UPDATE) private Date updateTime; }
-
实现元对象处理器接口
注意:不要忘记添加 @Component 注解
@Component public class MyMetaObjectHandler implements MetaObjectHandler { @Override public void insertFill(MetaObject metaObject) { this.setFieldValByName("createTime", new Date(), metaObject); this.setFieldValByName("updateTime", new Date(), metaObject); } @Override public void updateFill(MetaObject metaObject) { this.setFieldValByName("updateTime", new Date(), metaObject); } }
3、乐观锁
主要适用场景:当要更新一条记录的时候,希望这条记录没有被别人更新,也就是说实现线程安全的数据更新。
-
数据库中添加version字段
-
实体类添加version字段,并添加 @Version 注解
@Version @TableField(fill = FieldFill.INSERT) //为了初始化 private Integer version;
-
元对象处理器接口添加version的insert默认值
@Component public class MyMetaObjectHandler implements MetaObjectHandler { @Override public void insertFill(MetaObject metaObject) { this.setFieldValByName("createTime", new Date(), metaObject); this.setFieldValByName("updateTime", new Date(), metaObject); this.setFieldValByName("version", 1, metaObject); } @Override public void updateFill(MetaObject metaObject) { this.setFieldValByName("updateTime", new Date(), metaObject); } }
-
在 MpConfig 中注册 Bean
@MapperScan("com.cqupt.mybatis_plus.mapper") @Configuration public class MpConfig { /** * 乐观锁插件 */ @Bean public OptimisticLockerInterceptor optimisticLockerInterceptor() { return new OptimisticLockerInterceptor(); } }
-
测试乐观锁可以修改成功
@Test public void update() { // 先查询后修改 User user = userMapper.selectById(10L); user.setName("小明"); userMapper.updateById(user); }
4、Mp分页
Mybatis Plus自带分页插件,只要简单的配置即可实现分页功能
-
在 MpConfig 中注册 Bean
@MapperScan("com.cqupt.mybatis_plus.mapper") @Configuration public class MpConfig { /** * 乐观锁插件 */ @Bean public OptimisticLockerInterceptor optimisticLockerInterceptor() { return new OptimisticLockerInterceptor(); } /** * 分页插件 */ @Bean public PaginationInterceptor paginationInterceptor() { return new PaginationInterceptor(); } }
-
测试TestPage分页
@Test public void TestPage() { Page<User> page = new Page<>(1, 3); userMapper.selectPage(page, null); page.getRecords().forEach(System.out::println); System.out.println(page.getCurrent()); System.out.println(page.getPages()); System.out.println(page.getSize()); System.out.println(page.getTotal()); System.out.println(page.hasNext()); System.out.println(page.hasPrevious()); }
5、逻辑删除
- 物理删除:真实删除,将对应数据从数据库中删除,之后查询不到此条被删除数据
- 逻辑删除:假删除,将对应数据中代表是否被删除字段状态修改为“被删除状态”,之后在数据库中仍旧能看到此条数据记录
-
数据库中添加 deleted字段
-
实体类添加deleted 字段 和 @TableLogic 注解
@TableField(fill = FieldFill.INSERT) private Date createTime; @TableField(fill = FieldFill.INSERT_UPDATE) private Date updateTime; @Version private Integer version; @TableLogic @TableField(fill = FieldFill.INSERT) private Integer deleted;
-
元对象处理器接口添加deleted的insert默认值
@Component public class MyMetaObjectHandler implements MetaObjectHandler { @Override public void insertFill(MetaObject metaObject) { this.setFieldValByName("createTime", new Date(), metaObject); this.setFieldValByName("updateTime", new Date(), metaObject); this.setFieldValByName("version", 1, metaObject); this.setFieldValByName("deleted", 0, metaObject); } @Override public void updateFill(MetaObject metaObject) { this.setFieldValByName("updateTime", new Date(), metaObject); } }
-
在 MpConfig 中注册 Bean
@MapperScan("com.cqupt.mybatis_plus.mapper") @Configuration public class MpConfig { /** * 乐观锁插件 */ @Bean public OptimisticLockerInterceptor optimisticLockerInterceptor() { return new OptimisticLockerInterceptor(); } /** * 分页插件 */ @Bean public PaginationInterceptor paginationInterceptor() { return new PaginationInterceptor(); } /** * 逻辑删除插件 */ @Bean public ISqlInjector sqlInjector() { return new LogicSqlInjector(); } }
-
测试
- 测试后发现,数据并没有被删除,deleted字段的值由0变成了1
- 测试后分析打印的sql语句,是一条update
- 注意:被删除数据的deleted 字段的值必须是 0,才能被选取出来执行逻辑删除的操作
@Test
public void testLogicDelete() {
userMapper.deleteBatchIds(Arrays.asList(1,2,3));
List<User> users = userMapper.selectList(null);
users.forEach(System.out::println);
}
- 查询操作也会自动添加逻辑删除字段的判断
6、性能分析
性能分析拦截器,用于输出每条 SQL 语句及其执行时间
SQL 性能执行分析,开发环境使用,超过指定时间,停止运行。有助于发现问题
参数:maxTime: SQL 执行最大时长,超过自动停止运行,有助于发现问题。
参数:format: SQL是否格式化,默认false
/**
* SQL 执行性能分析插件
* 开发环境使用,线上不推荐。 maxTime 指的是 sql 最大执行时长
*/
@Bean
@Profile({
"dev","test"})// 设置 dev test 环境开启
public PerformanceInterceptor performanceInterceptor() {
PerformanceInterceptor performanceInterceptor = new PerformanceInterceptor();
performanceInterceptor.setMaxTime(500);//ms,超过此处设置的ms则sql不执行
performanceInterceptor.setFormat(true);
return performanceInterceptor;
}
7、代码生成器
在test/java目录下创建包com.atguigu.eduservice,创建代码生成器:CodeGenerator.java
package com.cqupt.generator;
import com.baomidou.mybatisplus.annotation.DbType;
import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.generator.AutoGenerator;
import com.baomidou.mybatisplus.generator.config.DataSourceConfig;
import com.baomidou.mybatisplus.generator.config.GlobalConfig;
import com.baomidou.mybatisplus.generator.config.PackageConfig;
import com.baomidou.mybatisplus.generator.config.StrategyConfig;
import com.baomidou.mybatisplus.generator.config.rules.DateType;
import com.baomidou.mybatisplus.generator.config.rules.NamingStrategy;
import org.junit.Test;
/**
* @author
* @since 2018/12/13
*/
public class CodeGenerator {
@Test
public void run() {
// 1、创建代码生成器
AutoGenerator mpg = new AutoGenerator();
// 2、全局配置
GlobalConfig gc = new GlobalConfig();
String projectPath = System.getProperty("user.dir");
gc.setOutputDir("D:\\IdeaProject\\IdeaProject\\guli_parent\\service\\service-edu" + "/src/main/java");
gc.setAuthor("Zhy");
gc.setOpen(false); //生成后是否打开资源管理器
gc.setFileOverride(false); //重新生成时文件是否覆盖
gc.setServiceName("%sService"); //去掉Service接口的首字母I
gc.setIdType(IdType.ID_WORKER_STR); //主键策略
gc.setDateType(DateType.ONLY_DATE);//定义生成的实体类中日期类型
gc.setSwagger2(true);//开启Swagger2模式
mpg.setGlobalConfig(gc);
// 3、数据源配置
DataSourceConfig dsc = new DataSourceConfig();
dsc.setUrl("jdbc:mysql://localhost:3306/guli?serverTimezone=GMT%2B8");
dsc.setDriverName("com.mysql.cj.jdbc.Driver");
dsc.setUsername("root");
dsc.setPassword("root");
dsc.setDbType(DbType.MYSQL);
mpg.setDataSource(dsc);
// 4、包配置
PackageConfig pc = new PackageConfig();
pc.setModuleName("eduservice"); //模块名
pc.setParent("com.cqupt");
pc.setController("controller");
pc.setEntity("entity");
pc.setService("service");
pc.setMapper("mapper");
mpg.setPackageInfo(pc);
// 5、策略配置
StrategyConfig strategy = new StrategyConfig();
strategy.setInclude("edu_subject");
strategy.setNaming(NamingStrategy.underline_to_camel);//数据库表映射到实体的命名策略
strategy.setTablePrefix(pc.getModuleName() + "_"); //生成实体时去掉表前缀
strategy.setColumnNaming(NamingStrategy.underline_to_camel);//数据库表字段映射到实体的命名策略
strategy.setEntityLombokModel(true); // lombok 模型 @Accessors(chain = true) setter链式操作
strategy.setRestControllerStyle(true); //restful api风格控制器
strategy.setControllerMappingHyphenStyle(true); //url中驼峰转连字符
mpg.setStrategy(strategy);
// 6、执行
mpg.execute();
}
}
8、统一异常处理
我们想让异常结果也显示为统一的返回结果对象,并且统一处理系统的异常信息,那么需要统一异常处
理。
1、在service-base中创建统一异常处理类GlobalExceptionHandler.java:
@ControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler(Exception.class)
@ResponseBody
public R error(Exception e) {
e.printStackTrace();
return R.error().message("服务器发生了错误");
}
}
2、GlobalExceptionHandler.java中添加自定义异常
@ControllerAdvice
public class GlobalExceptionHandler {
/*
* 全局异常
* */
@ExceptionHandler(Exception.class)
@ResponseBody
public R error(Exception e) {
e.printStackTrace();
return R.error().message("服务器发生了错误!");
}
/*
* 自定义异常
* */
@ExceptionHandler(GuliException.class)
@ResponseBody
public R error(GuliException e) {
e.printStackTrace();
return R.error().code(e.getCode()).message(e.getMsg());
}
}
9、日志
日志记录器(Logger)的行为是分等级的。如下表所示:
分为:OFF、FATAL、ERROR、WARN、INFO、DEBUG、ALL
默认情况下,spring boot从控制台打印出来的日志级别只有INFO及以上级别,可以配置日志级别
# 设置日志级别
logging.level.root=WARN
-
配置logback日志:resources 中创建 logback-spring.xml
<?xml version="1.0" encoding="UTF-8"?> <configuration scan="true" scanPeriod="10 seconds"> <!-- 日志级别从低到高分为TRACE < DEBUG < INFO < WARN < ERROR < FATAL,如果设 置为WARN,则低于WARN的信息都不会输出 --> <!-- scan:当此属性设置为true时,配置文件如果发生改变,将会被重新加载,默认值 为true --> <!-- scanPeriod:设置监测配置文件是否有修改的时间间隔,如果没有给出时间单位,默认 单位是毫秒。当scan为true时,此属性生效。默认的时间间隔为1分钟。 --> <!-- debug:当此属性设置为true时,将打印出logback内部日志信息,实时查 看logback运行状态。默认值为false。 --> <contextName>logback</contextName> <!-- name的值是变量的名称,value的值时变量定义的值。通过定义的值会被插入 到logger上下文中。定义变量后,可以使“${}”来使用变量。 --> <property name="log.path" value="D:/IdeaProject/IdeaProject/guli_parent/edu" /> <!-- 彩色日志 --> <!-- 配置格式变量:CONSOLE_LOG_PATTERN 彩色日志格式 --> <!-- magenta:洋红 --> <!-- boldMagenta:粗红--> <!-- cyan:青色 --> <!-- white:白色 --> <!-- magenta:洋红 --> <property name="CONSOLE_LOG_PATTERN" value="%yellow(%date{yyyy-MM-dd HH:mm:ss}) |%highlight(%-5level) |%blue(%thread) |%blue(%file:%line) |%green(%logger) |%cyan(%msg%n)"/> <!--输出到控制台--> <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender"> <!--此日志appender是为开发使用,只配置最底级别,控制台输出的日志级别是大于或 等于此级别的日志信息--> <!-- 例如:如果此处配置了INFO级别,则后面其他位置即使配置了DEBUG级别的日 志,也不会被输出 --> <filter class="ch.qos.logback.classic.filter.ThresholdFilter"> <level>INFO</level> </filter> <encoder> <Pattern>${CONSOLE_LOG_PATTERN}</Pattern> <!-- 设置字符集 --> <charset>UTF-8</charset> </encoder> </appender> <!--输出到文件--> <!-- 时间滚动输出 level为 INFO 日志 --> <appender name="INFO_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <!-- 正在记录的日志文件的路径及文件名 --> <file>${log.path}/log_info.log</file> <!--日志文件输出格式--> <encoder> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> <charset>UTF-8</charset> </encoder> <!-- 日志记录器的滚动策略,按日期,按大小记录 --> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <!-- 每天日志归档路径以及格式 --> <fileNamePattern>${log.path}/info/log-info-%d{yyyy-MM- dd}.%i.log</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <!--日志文件保留天数--> <maxHistory>15</maxHistory> </rollingPolicy> <!-- 此日志文件只记录info级别的 --> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>INFO</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender> <!-- 时间滚动输出 level为 WARN 日志 --> <appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <!-- 正在记录的日志文件的路径及文件名 --> <file>${log.path}/log_warn.log</file> <!--日志文件输出格式--> <encoder> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> <charset>UTF-8</charset> <!-- 此处设置字符集 --> </encoder> <!-- 日志记录器的滚动策略,按日期,按大小记录 --> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>${log.path}/warn/log-warn-%d{yyyy-MM- dd}.%i.log</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <!--日志文件保留天数--> <maxHistory>15</maxHistory> </rollingPolicy> <!-- 此日志文件只记录warn级别的 --> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>warn</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender> <!-- 时间滚动输出 level为 ERROR 日志 --> <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender"> <!-- 正在记录的日志文件的路径及文件名 --> <file>${log.path}/log_error.log</file> <!--日志文件输出格式--> <encoder> <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{50} - %msg%n</pattern> <charset>UTF-8</charset> <!-- 此处设置字符集 --> </encoder> <!-- 日志记录器的滚动策略,按日期,按大小记录 --> <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy"> <fileNamePattern>${log.path}/error/log-error-%d{yyyy-MM- dd}.%i.log</fileNamePattern> <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP"> <maxFileSize>100MB</maxFileSize> </timeBasedFileNamingAndTriggeringPolicy> <!--日志文件保留天数--> <maxHistory>15</maxHistory> </rollingPolicy> <!-- 此日志文件只记录ERROR级别的 --> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>ERROR</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> </appender> <!-- <logger>用来设置某一个包或者具体的某一个类的日志打印级别、以及指 定<appender>。 <logger>仅有一个name属性, 一个可选的level和一个可选的addtivity属性。 name:用来指定受此logger约束的某一个包或者具体的某一个类。 level:用来设置打印级别,大小写无关:TRACE, DEBUG, INFO, WARN, ERROR, ALL 和 OFF, 如果未设置此属性,那么当前logger将会继承上级的级别。 --> <!-- 使用mybatis的时候,sql语句是debug下才会打印,而这里我们只配置了info,所以想 要查看sql语句的话,有以下两种操作: 第一种把<root level="INFO">改成<root level="DEBUG">这样就会打印sql,不过 这样日志那边会出现很多其他消息 第二种就是单独给mapper下目录配置DEBUG模式,代码如下,这样配置sql语句会打 印,其他还是正常DEBUG级别: --> <!--开发环境:打印控制台--> <springProfile name="dev"> <!--可以输出项目中的debug日志,包括mybatis的sql日志--> <logger name="com.guli" level="INFO" /> <!-- root节点是必选节点,用来指定最基础的日志输出级别,只有一个level属性 level:用来设置打印级别,大小写无关:TRACE, DEBUG, INFO, WARN, ERROR, ALL 和 OFF,默认是DEBUG 可以包含零个或多个appender元素。 --> <root level="INFO"> <appender-ref ref="CONSOLE" /> <appender-ref ref="INFO_FILE" /> <appender-ref ref="WARN_FILE" /> <appender-ref ref="ERROR_FILE" /> </root> </springProfile> <!--生产环境:输出到文件--> <springProfile name="pro"> <root level="INFO"> <appender-ref ref="CONSOLE" /> <appender-ref ref="DEBUG_FILE" /> <appender-ref ref="INFO_FILE" /> <appender-ref ref="ERROR_FILE" /> <appender-ref ref="WARN_FILE" /> </root> </springProfile> </configuration>
-
将错误日志输出到文件:GlobalExceptionHandler.java 中
@ControllerAdvice @Slf4j public class GlobalExceptionHandler { /* * 全局异常 * */ @ExceptionHandler(Exception.class) @ResponseBody public R error(Exception e) { e.printStackTrace(); log.error(e.getMessage()); return R.error().message("服务器发生了错误!"); } /* * 自定义异常 * */ @ExceptionHandler(GuliException.class) @ResponseBody public R error(GuliException e) { e.printStackTrace(); log.error(e.getMessage()); return R.error().code(e.getCode()).message(e.getMsg()); } }
10、Excel 操作
EasyExcel采用一行一行的解析模式,并将一行的解析结果以观察者的模式通知处理。
1、实现写操作
1、导入相关依赖
<dependencies>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi</artifactId>
<poi.version>3.17</poi.version>
</dependency>
<dependency>
<groupId>org.apache.poi</groupId>
<artifactId>poi-ooxml</artifactId>
<poi.version>3.17</poi.version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.alibaba/easyexcel -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>easyexcel</artifactId>
<version>2.1.1</version>
</dependency>
</dependencies>
2、创建实体类,设置表头和添加的数据字段
@Data
public class DemoData {
//设置Excel表头名称
@ExcelProperty(value = "学生编号", index = 0)
private Integer sno;
@ExcelProperty(value = "学生姓名", index = 1)
private String sname;
}
3、实现写操作
public static void main(String[] args) {
String filename = "D:\\学习文档\\谷粒学院实战文档\\test.xlsx";
EasyExcel.write(filename, DemoData.class).sheet("学生列表").doWrite(data());
}
2、实现读操作
1、创建实体类
@Data
public class DemoData {
//设置Excel表头名称
//设置列对应的属性
@ExcelProperty(value = "学生编号", index = 0)
private Integer sno;
@ExcelProperty(value = "学生姓名", index = 1)
private String sname;
}
2、创建读取操作的监听器
//创建读取excel监听器
public class ExcelListener extends AnalysisEventListener<DemoData> {
//一行一行去读取excle内容
@Override
public void invoke(DemoData data, AnalysisContext analysisContext) {
System.out.println("***" + data);
}
//读取excel表头信息
@Override
public void invokeHeadMap(Map<Integer, String> headMap, AnalysisContext context) {
System.out.println("表头信息:" + headMap);
}
//读取完成后执行
@Override
public void doAfterAllAnalysed(AnalysisContext analysisContext) {
}
}
3、实现读操作
public static void main(String[] args) {
String filename = "D:\\学习文档\\谷粒学院实战文档\\test.xlsx";
EasyExcel.read(filename, DemoData.class, new ExcelListener()).sheet().doRead();
}
11、Redis缓存
1、导入依赖
<!-- redis -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</dependency>
<!-- spring2.X集成redis所需common-pool2-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
<version>2.6.0</version>
</dependency>
2、添加redis配置类
/**
* @author Zhy
* @date 2021/2/26 16:01
*/
@EnableCaching
@Configuration
public class RedisConfig extends CachingConfigurerSupport {
@Bean
public RedisTemplate<String, Object> redisTemplate(RedisConnectionFactory
factory) {
RedisTemplate<String, Object> template = new RedisTemplate<>();
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new
Jackson2JsonRedisSerializer(Object.class);
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
template.setConnectionFactory(factory);
//key序列化方式
template.setKeySerializer(redisSerializer);
//value序列化
template.setValueSerializer(jackson2JsonRedisSerializer);
//value hashmap序列化
template.setHashValueSerializer(jackson2JsonRedisSerializer);
return template;
}
@Bean
public CacheManager cacheManager(RedisConnectionFactory factory) {
RedisSerializer<String> redisSerializer = new StringRedisSerializer();
Jackson2JsonRedisSerializer jackson2JsonRedisSerializer = new Jackson2JsonRedisSerializer(Object.class);
//解决查询缓存转换异常的问题
ObjectMapper om = new ObjectMapper();
om.setVisibility(PropertyAccessor.ALL, JsonAutoDetect.Visibility.ANY);
om.enableDefaultTyping(ObjectMapper.DefaultTyping.NON_FINAL);
jackson2JsonRedisSerializer.setObjectMapper(om);
// 配置序列化(解决乱码的问题),过期时间600秒
RedisCacheConfiguration config =
RedisCacheConfiguration.defaultCacheConfig()
.entryTtl(Duration.ofSeconds(600))
.serializeKeysWith(RedisSerializationContext.SerializationPair.fromSerializer(redisSerializer))
.serializeValuesWith(RedisSerializationContext.SerializationPair.fromSerializer(jackson2JsonRedisSerializer))
.disableCachingNullValues();
RedisCacheManager cacheManager = RedisCacheManager.builder(factory)
.cacheDefaults(config)
.build();
return cacheManager;
}
}
12、单点登录实现方式
1、JWT令牌的使用
1、添加依赖
<!-- JWT-->
<dependency>
<groupId>io.jsonwebtoken</groupId>
<artifactId>jjwt</artifactId>
</dependency>
2、引入jwt工具类
/**
* @author Zhy
* @date 2021/2/26 21:02
*/
public class JwtUtils {
public static final long EXPIRE = 1000 * 60 * 60 * 24; // token过期时间
public static final String APP_SECRET = "ukc8BDbRigUDaY6pZFfWus2jZWLPHO"; // 密钥
// 生产token字符串的方法
public static String getJwtToken(String id, String nickname){
String JwtToken = Jwts.builder()
.setHeaderParam("typ", "JWT")
.setHeaderParam("alg", "HS256") // 设置头部信息
.setSubject("guli-user")
.setIssuedAt(new Date())
.setExpiration(new Date(System.currentTimeMillis() + EXPIRE)) // 设置过期时间
.claim("id", id)
.claim("nickname", nickname) // 设置token主体信息,存储用户信息,可以输入多个
.signWith(SignatureAlgorithm.HS256, APP_SECRET)
.compact();
return JwtToken;
}
/**
* 判断token是否存在与有效
* @param jwtToken
* @return
*/
public static boolean checkToken(String jwtToken) {
if(StringUtils.isEmpty(jwtToken)) return false;
try {
Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* 判断token是否存在与有效
* @param request
* @return
*/
public static boolean checkToken(HttpServletRequest request) {
try {
String jwtToken = request.getHeader("token");
if(StringUtils.isEmpty(jwtToken)) return false;
Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
} catch (Exception e) {
e.printStackTrace();
return false;
}
return true;
}
/**
* 根据token获取用户id
* @param request
* @return
*/
public static String getMemberIdByJwtToken(HttpServletRequest request) {
String jwtToken = request.getHeader("token");
if(StringUtils.isEmpty(jwtToken)) return "";
Jws<Claims> claimsJws = Jwts.parser().setSigningKey(APP_SECRET).parseClaimsJws(jwtToken);
Claims claims = claimsJws.getBody();
return (String)claims.get("id");
}
}
2、阿里云短信的使用
1、引入依赖
<dependencies>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
</dependency>
<dependency>
<groupId>com.aliyun</groupId>
<artifactId>aliyun-java-sdk-core</artifactId>
</dependency>
</dependencies>
2、编写controller和service
@RestController
@RequestMapping("/edumsm/msm")
@CrossOrigin
@Api(description = "短信服务")
public class MsmController {
@Autowired
private MsmService msmService;
@Autowired
private RedisTemplate<String, String> redisTemplate;
@ApiOperation(value = "发送短信")
@GetMapping("/send/{phone}")
public R sendMsm(@PathVariable String phone) {
// 从redis获取验证码,如果获取到直接返回
String code = redisTemplate.opsForValue().get(phone);
if (!StringUtils.isEmpty(code)) {
return R.ok();
}
// 如果redis获取不到再通过阿里云发送
code = RandomUtil.getFourBitRandom();
Map<String, Object> param = new HashMap<>();
param.put("code", code);
Boolean isSend = msmService.send(param, phone);
if (isSend) {
// 存入redis并设置有效时间
redisTemplate.opsForValue().set(phone, code, 5, TimeUnit.MINUTES);
return R.ok();
} else {
return R.error().message("短信发送失败!");
}
}
}
@Service
public class MsmServiceImpl implements MsmService {
@Override
public Boolean send(Map<String, Object> param, String phone) {
if (StringUtils.isEmpty(phone))
return false;
DefaultProfile profile = DefaultProfile.getProfile("default", "LTAI4FvvVEWiTJ3GNJJqJnk7", "9st82dv7EvFk9mTjYO1XXbM632fRbG");
IAcsClient client = new DefaultAcsClient(profile);
// 设置相关固定参数
CommonRequest request = new CommonRequest();
//request.setProtocol(ProtocolType.HTTPS);
request.setMethod(MethodType.POST);
request.setDomain("dysmsapi.aliyuncs.com");
request.setVersion("2017-05-25");
request.setAction("SendSms");
// 设置发送相关参数
request.putQueryParameter("PhoneNumbers",phone); //手机号
request.putQueryParameter("SignName","我的谷粒在线教育网站"); //申请阿里云 签名名称
request.putQueryParameter("TemplateCode","SMS_180051135"); //申请阿里云 模板code
request.putQueryParameter("TemplateParam", JSONObject.toJSONString(param)); //验证码数据,转换json数据传递
try {
CommonResponse response = client.getCommonResponse(request);
boolean success = response.getHttpResponse().isSuccess();
return success;
} catch (ClientException e) {
e.printStackTrace();
return false;
}
}
}
13、HttpClient工具类
1、导入依赖
<dependencies>
<!--httpclient-->
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
</dependency>
<!--commons-io-->
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
</dependency>
<!--gson-->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
</dependency>
</dependencies>
2、创建httpclient工具类
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang.StringUtils;
import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.config.RequestConfig;
import org.apache.http.client.config.RequestConfig.Builder;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ConnectTimeoutException;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.conn.ssl.SSLContextBuilder;
import org.apache.http.conn.ssl.TrustStrategy;
import org.apache.http.conn.ssl.X509HostnameVerifier;
import org.apache.http.entity.ContentType;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.PoolingHttpClientConnectionManager;
import org.apache.http.message.BasicNameValuePair;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLException;
import javax.net.ssl.SSLSession;
import javax.net.ssl.SSLSocket;
import java.io.IOException;
import java.net.SocketTimeoutException;
import java.security.GeneralSecurityException;
import java.security.cert.CertificateException;
import java.security.cert.X509Certificate;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Set;
/**
* 依赖的jar包有:commons-lang-2.6.jar、httpclient-4.3.2.jar、httpcore-4.3.1.jar、commons-io-2.4.jar
* @author zhaoyb
*
*/
public class HttpClientUtils {
public static final int connTimeout=10000;
public static final int readTimeout=10000;
public static final String charset="UTF-8";
private static HttpClient client = null;
static {
PoolingHttpClientConnectionManager cm = new PoolingHttpClientConnectionManager();
cm.setMaxTotal(128);
cm.setDefaultMaxPerRoute(128);
client = HttpClients.custom().setConnectionManager(cm).build();
}
public static String postParameters(String url, String parameterStr) throws ConnectTimeoutException, SocketTimeoutException, Exception{
return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
}
public static String postParameters(String url, String parameterStr,String charset, Integer connTimeout, Integer readTimeout) throws ConnectTimeoutException, SocketTimeoutException, Exception{
return post(url,parameterStr,"application/x-www-form-urlencoded",charset,connTimeout,readTimeout);
}
public static String postParameters(String url, Map<String, String> params) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
return postForm(url, params, null, connTimeout, readTimeout);
}
public static String postParameters(String url, Map<String, String> params, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
return postForm(url, params, null, connTimeout, readTimeout);
}
public static String get(String url) throws Exception {
return get(url, charset, null, null);
}
public static String get(String url, String charset) throws Exception {
return get(url, charset, connTimeout, readTimeout);
}
/**
* 发送一个 Post 请求, 使用指定的字符集编码.
*
* @param url
* @param body RequestBody
* @param mimeType 例如 application/xml "application/x-www-form-urlencoded" a=1&b=2&c=3
* @param charset 编码
* @param connTimeout 建立链接超时时间,毫秒.
* @param readTimeout 响应超时时间,毫秒.
* @return ResponseBody, 使用指定的字符集编码.
* @throws ConnectTimeoutException 建立链接超时异常
* @throws SocketTimeoutException 响应超时
* @throws Exception
*/
public static String post(String url, String body, String mimeType,String charset, Integer connTimeout, Integer readTimeout)
throws ConnectTimeoutException, SocketTimeoutException, Exception {
HttpClient client = null;
HttpPost post = new HttpPost(url);
String result = "";
try {
if (StringUtils.isNotBlank(body)) {
HttpEntity entity = new StringEntity(body, ContentType.create(mimeType, charset));
post.setEntity(entity);
}
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
post.setConfig(customReqConf.build());
HttpResponse res;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(post);
} else {
// 执行 Http 请求.
client = HttpClientUtils.client;
res = client.execute(post);
}
result = IOUtils.toString(res.getEntity().getContent(), charset);
} finally {
post.releaseConnection();
if (url.startsWith("https") && client != null&& client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
return result;
}
/**
* 提交form表单
*
* @param url
* @param params
* @param connTimeout
* @param readTimeout
* @return
* @throws ConnectTimeoutException
* @throws SocketTimeoutException
* @throws Exception
*/
public static String postForm(String url, Map<String, String> params, Map<String, String> headers, Integer connTimeout,Integer readTimeout) throws ConnectTimeoutException,
SocketTimeoutException, Exception {
HttpClient client = null;
HttpPost post = new HttpPost(url);
try {
if (params != null && !params.isEmpty()) {
List<NameValuePair> formParams = new ArrayList<NameValuePair>();
Set<Entry<String, String>> entrySet = params.entrySet();
for (Entry<String, String> entry : entrySet) {
formParams.add(new BasicNameValuePair(entry.getKey(), entry.getValue()));
}
UrlEncodedFormEntity entity = new UrlEncodedFormEntity(formParams, Consts.UTF_8);
post.setEntity(entity);
}
if (headers != null && !headers.isEmpty()) {
for (Entry<String, String> entry : headers.entrySet()) {
post.addHeader(entry.getKey(), entry.getValue());
}
}
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
post.setConfig(customReqConf.build());
HttpResponse res = null;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(post);
} else {
// 执行 Http 请求.
client = HttpClientUtils.client;
res = client.execute(post);
}
return IOUtils.toString(res.getEntity().getContent(), "UTF-8");
} finally {
post.releaseConnection();
if (url.startsWith("https") && client != null
&& client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
}
/**
* 发送一个 GET 请求
*
* @param url
* @param charset
* @param connTimeout 建立链接超时时间,毫秒.
* @param readTimeout 响应超时时间,毫秒.
* @return
* @throws ConnectTimeoutException 建立链接超时
* @throws SocketTimeoutException 响应超时
* @throws Exception
*/
public static String get(String url, String charset, Integer connTimeout,Integer readTimeout)
throws ConnectTimeoutException,SocketTimeoutException, Exception {
HttpClient client = null;
HttpGet get = new HttpGet(url);
String result = "";
try {
// 设置参数
Builder customReqConf = RequestConfig.custom();
if (connTimeout != null) {
customReqConf.setConnectTimeout(connTimeout);
}
if (readTimeout != null) {
customReqConf.setSocketTimeout(readTimeout);
}
get.setConfig(customReqConf.build());
HttpResponse res = null;
if (url.startsWith("https")) {
// 执行 Https 请求.
client = createSSLInsecureClient();
res = client.execute(get);
} else {
// 执行 Http 请求.
client = HttpClientUtils.client;
res = client.execute(get);
}
result = IOUtils.toString(res.getEntity().getContent(), charset);
} finally {
get.releaseConnection();
if (url.startsWith("https") && client != null && client instanceof CloseableHttpClient) {
((CloseableHttpClient) client).close();
}
}
return result;
}
/**
* 从 response 里获取 charset
*
* @param ressponse
* @return
*/
@SuppressWarnings("unused")
private static String getCharsetFromResponse(HttpResponse ressponse) {
// Content-Type:text/html; charset=GBK
if (ressponse.getEntity() != null && ressponse.getEntity().getContentType() != null && ressponse.getEntity().getContentType().getValue() != null) {
String contentType = ressponse.getEntity().getContentType().getValue();
if (contentType.contains("charset=")) {
return contentType.substring(contentType.indexOf("charset=") + 8);
}
}
return null;
}
/**
* 创建 SSL连接
* @return
* @throws GeneralSecurityException
*/
private static CloseableHttpClient createSSLInsecureClient() throws GeneralSecurityException {
try {
SSLContext sslContext = new SSLContextBuilder().loadTrustMaterial(null, new TrustStrategy() {
public boolean isTrusted(X509Certificate[] chain,String authType) throws CertificateException {
return true;
}
}).build();
SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslContext, new X509HostnameVerifier() {
@Override
public boolean verify(String arg0, SSLSession arg1) {
return true;
}
@Override
public void verify(String host, SSLSocket ssl)
throws IOException {
}
@Override
public void verify(String host, X509Certificate cert)
throws SSLException {
}
@Override
public void verify(String host, String[] cns,
String[] subjectAlts) throws SSLException {
}
});
return HttpClients.custom().setSSLSocketFactory(sslsf).build();
} catch (GeneralSecurityException e) {
throw e;
}
}
public static void main(String[] args) {
try {
String str= post("https://localhost:443/ssl/test.shtml","name=12&page=34","application/x-www-form-urlencoded", "UTF-8", 10000, 10000);
//String str= get("https://localhost:443/ssl/test.shtml?name=12&page=34","GBK");
/*Map<String,String> map = new HashMap<String,String>();
map.put("name", "111");
map.put("page", "222");
String str= postForm("https://localhost:443/ssl/test.shtml",map,null, 10000, 10000);*/
System.out.println(str);
} catch (ConnectTimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SocketTimeoutException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
14、定时任务
1、添加注解 @EnableScheduling
@SpringBootApplication
@ComponentScan(basePackages = {
"com.cqupt"})
@EnableDiscoveryClient
@EnableFeignClients
@EnableScheduling
@MapperScan("com.cqupt.staservice.mapper")
public class StaApplication {
public static void main(String[] args) {
SpringApplication.run(StaApplication.class, args);
}
}
2、创建定时任务类,使用cron表达式
@Component
public class ScheduledTask {
@Autowired
private StatisticsDailyService statisticService;
@ApiOperation(value = "每天凌晨1点执行方法")
@Scheduled(cron = "0 0 1 * * ?")
public void taskStatistics() {
String day = DateUtil.formatDate(DateUtil.addDays(new Date(), -1));
statisticService.registerCount(day);
}
}