2020
09-24
09-24
Springboot和Jpa实现学生CRUD操作代码实例
前期准备使用idea新建个SpringBoot项目在数据库中建student表建包1.编写entity包下实体类Student(一个Javabean规范)packagecom.example.stu.kudestu.stu.entity;importjavax.persistence.*;@Entity@Table(name="student")//@Entity应用在实体类上@Table(name="student")应用在实体类上,并且name属性为数据库表名publicclassStudent{@Id@GeneratedValue(strategy=GenerationType.IDENTITY)//ID自增private...
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方法一:1.在pom.xml文件下添加依赖包<dependency><groupId>com.alibaba</groupId><artifactId>fastjson</artifactId><version>1.2.15</version></dependency>2.修改启动文件packagemyshop;importjava.util.List;importorg.springframework.boot.SpringApplication;importorg.springframework.boot.autoconfigure.SpringBootApplication;importorg.springframework.http.converter.HttpMessageConverter;importo...
为啥要热部署:在修改代码的时候,不需要重新启动程序,程序会自动进行编译注意:控制器中新增加的方法是不能进行热部署的方法:1.在pom.xml文件里面添加下面代码<project><build><finalName>myshop</finalName><plugins><plugin><groupId>org.springframework.boot</groupId><artifactId>spring-boot-maven-plugin</artifactId></plugin></plugins></build></project>2.右键项目-》“properties”-...
1.pom.xml添加相应依赖<dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-thymeleaf</artifactId></dependency>2.application.properties#thymeleafspring.thymeleaf.prefix=classpath:/templates/spring.thymeleaf.suffix=.htmlspring.thymeleaf.mode=HTML5spring.thymeleaf.encoding=UTF-8spring.thymeleaf.content-type=text/html;charset=utf-8spring.thymeleaf.cache=false3...
在项目pom.xml中加入依赖<dependency><groupId>org.elasticsearch.client</groupId><artifactId>elasticsearch-rest-high-level-client</artifactId><version>7.6.1</version></dependency><dependency><groupId>org.elasticsearch</groupId><artifactId>elasticsearch</artifactId><version>7.6.1</version></dependency>发现项目总会拉下6.4.3的版本,并且项目中也会引用这个版本然后启动项目,还会发现找不到方法...
1.添加Banner.txt文件._________/\\/___'_____(_)______\\\\(()\___|'_|'_||'_\/_`|\\\\\\/___)||_)|||||||(_||))))'|____|.__|_||_|_||_\__,|////=========|_|==============|___/=/_/_/_/::tianhengSpringBoot::(v2.0.5.RELEASE)2.修改application.properties文件#端口号server.port=8090#配置bannner地址spring.banner.location=banner.txt3.添...
报错信息:Pluginorg.apache.maven.plugins:maven-clean-plugin:3.0.0oroneofitsdependenciescouldnotberesolved解决方法:修改pom.xml下:<version>0.0.1-SNAPSHOT</version>为<version>0.0.1</version>另附:可能Problem窗体下回给出错误提示(警告不用管),直接右键删除即可,不然有报错提示MavenClean会不成功以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持自学编程网。...
1.修改pom.xml文件<projectxmlns="http://maven.apache.org/POM/4.0.0"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="http://maven.apache.org/POM/4.0.0http://maven.apache.org/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>top.ytheng</groupId><artifactId>springboot-demo</artifactId><version>0.0.1</version><packaging>war</packaging><parent><groupI...
步骤,如图所示:1.添加异步任务业务类packagetop.ytheng.demo.task;importjava.util.concurrent.Future;importorg.springframework.scheduling.annotation.Async;importorg.springframework.scheduling.annotation.AsyncResult;importorg.springframework.stereotype.Component;//异步任务业务类@Component//标记此类是异步类,也可在方法中标记//不加,则类里面的方法为同步执行@AsyncpublicclassAsyncTask{publicvoi...