<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.5.6.RELEASE</version> </parent>
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency>
<properties> <java.version>1.8</java.version> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <start-class>com.cc.Application</start-class> </properties>
<build> <finalName>springbootstudy</finalName> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build>
@Controller @RequestMapping("/hello") public class FirstController { @RequestMapping("/abc") @ResponseBody public String abc() { System.out.println("now in FirstController.abc"); return "Hello World!"; } }
@SpringBootApplication public class App { public static void main(String[] args) { //负责启动引导应 用程序 SpringApplication.run(App.class, args); } }
先运行启动类,然后在浏览器输入:<u> http://localhost:8080/hello/abc </u>
@SpringBootApplication:开启组件扫描和自动配置,
实际 上,@SpringBootApplication将三个有用的注解组合在了一起:
Spring的@Configuration:标明该类使用Spring基于Java的配置
Spring的@ComponentScan:启用组件扫描
Spring Boot的@EnableAutoConfiguration:开启Spring Boot自动配置
(1)加入依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.43</version> </dependency>
(2)在数据库中创建一个库springbootstudy,同时建一个表tbl_user,有如下字段:uuid、name、age
(3)配置数据源、配置jpa对hibernate的支持,在resources文件夹中建立一个application.properties文件,基本配置如下:
spring.datasource.driverClassName=com.mysql.jdbc.Driver spring.datasource.url=jdbc:mysql://127.0.0.1:3306/springbootstudy?useUnicode=true&characterEncoding=UTF-8 spring.datasource.username=root spring.datasource.password=root spring.datasource.max-active=20 spring.datasource.max-idle=8 spring.datasource.min-idle=8 spring.datasource.initial-size=10 spring.jpa.database=MySQL spring.jpa.show-sql=true spring.jpa.generate-ddl=false spring.jpa.hibernate.ddl-auto=update spring.jpa.properties.hibernate.current_session_context_class=org.springframework.orm.hibernate4.SpringSessionContext spring.jpa.properties.hibernate.format_sql=true spring.jpa.properties.hibernate.use_sql_comments=false spring.hibernate.packageScan=com.cc spring.jta.transaction-manager-id=transactionManager spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
2:添加user模块,先写vo
3:添加dao及实现,DAO接口示例如下:
public interface UserDAO<M extends UserModel> { public String create(M m); public void update(M m); public void delete(String uuid); public M getByUuid(String uuid); public List<M> getAll(); }
4:添加java配置
为了支持直接注入Hibernate的SessionFactory,建立一个H4Conf的类,采用java配置的方式:
@Configuration public class H4Conf { @Bean public SessionFactory sessionFactory(HibernateEntityManagerFactory hemf) { return hemf.getSessionFactory(); } }
添加Service及实现
添加Controller实现
(1)在application.properties中添加:
spring.thymeleaf.cache=false spring.thymeleaf.prefix=classpath:/templates
(2)添加依赖
<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-thymeleaf</artifactId> </dependency>
<!DOCTYPE HTML> <html xmlns:th="http://www.thymeleaf.org"> <head> <title>hello</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> </head> <body> <form th:action="@{/user/add}" method="post"> <table> <tr> <td>uuid</td> <td><input type="text" name="uuid" id="uuid"/></td> </tr> <tr> <td>name</td> <td><input type="text" name="name" id="name"/></td> </tr> <tr> <td>age</td> <td><input type="text" name="age" id="age"/></td> </tr> <tr> <td></td> <td><input type="submit" value="保存"/></td> </tr> </table> </form> </body> </html>
http://localhost:8080/user/toList
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