1.pom.xml添加jpa和数据库依赖包

<dependency>      <groupId>org.springframework.boot</groupId>      <artifactId>spring-boot-starter-data-jpa</artifactId> </dependency> <dependency>     <groupId>com.oracle</groupId>     <artifactId>ojdbc6</artifactId>     <version>11.2.0.3</version> </dependency>

2.application.properties配置数据库连接池

spring.datasource.url=jdbc:oracle:thin:@localhost:1521:orcl spring.datasource.username=jdjk spring.datasource.password=jdjk spring.datasource.initialSize=20   spring.datasource.minIdle=20   spring.datasource.maxActive=100     spring.datasource.maxWait=60000 spring.jpa.database-platform=org.hibernate.dialect.OracleDialect

3.创建表映射实体类

import javax.persistence.Entity; import javax.persistence.Id; import javax.persistence.Table;  @Entity @Table(name="t_sys_jkconfig") public class T_SYS_JKCONFIG{  	private String xh; 	private String server_ip; 	private String server_name; 	private String server_action; 	 	@Id 	public String getXh() { 		return xh; 	} 	public void setXh(String xh) { 		this.xh = xh; 	} 	public String getServer_ip() { 		return server_ip; 	} 	public void setServer_ip(String server_ip) { 		this.server_ip = server_ip; 	} 	public String getServer_name() { 		return server_name; 	} 	public void setServer_name(String server_name) { 		this.server_name = server_name; 	} 	public String getServer_action() { 		return server_action; 	} 	public void setServer_action(String server_action) { 		this.server_action = server_action; 	} }

4.创建接口继承JpaRepository

import java.util.List; import java.util.Map;  import org.springframework.data.jpa.repository.JpaRepository; import org.springframework.data.jpa.repository.Modifying; import org.springframework.data.jpa.repository.Query; import org.springframework.data.repository.query.Param; import org.springframework.stereotype.Repository; import org.springframework.transaction.annotation.Transactional;  import cn.com.highset.goexpo.bqd.bean.T_SYS_JKCONFIG;  @Repository @Transactional public interface IBaseDao extends JpaRepository<T_SYS_JKCONFIG, String> {  	 	T_SYS_JKCONFIG findByXh(String xh); 	 	//返回对象 	@Query(value = "select * from t_sys_jkconfig where server_ip = :ip", nativeQuery = true) 	List<T_SYS_JKCONFIG> getByIp(@Param("ip") String ip); 	 	//返回map 	@Query(value = "select server_ip from t_sys_jkconfig where server_ip = :ip", nativeQuery = true) 	List<Map> getMapByIp(@Param("ip") String ip);  	@Modifying 	@Query(value = "update t_sys_jkconfig set server_ip = :ip where xh = :xh", nativeQuery = true) 	void updateByXh(@Param("ip") String ip,@Param("xh") String xh); }

5.在Controller中调用方法

import java.util.List; import java.util.Map;  import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Controller; import org.springframework.ui.Model; import org.springframework.web.bind.annotation.RequestMapping;  import cn.com.highset.goexpo.dao.IBaseDao;  @Controller public class IndexController { 	 	@Autowired 	private IBaseDao baseDao; 	 	@RequestMapping("/") 	public String root(Model model) { 		//新增 		T_SYS_JKCONFIG t = new T_SYS_JKCONFIG(); 		t.setXh("111"); 		t.setServer_ip("222"); 		t.setServer_name("333"); 		t.setServer_action("444"); 		baseDao.save(t); 		//删除 		T_SYS_JKCONFIG jkconfig = baseDao.findByXh("111"); 		baseDao.delete(jkconfig); 		//修改 		baseDao.updateByXh("12345", "1"); 		//查询 		List<Map> list =  baseDao.getMapByIp("192.168.1.120"); 		for(Map t : list){ 			System.out.println(t.get("xh")); 		} 		model.addAttribute("list", list); 		return "home"; 	} }

6.在启动类Application中添加扫描注解

import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.boot.autoconfigure.domain.EntityScan; import org.springframework.data.jpa.repository.config.EnableJpaRepositories; import org.springframework.web.bind.annotation.RestController;  @RestController @SpringBootApplication @EnableJpaRepositories(basePackages = "xxx.xxx.dao") @EntityScan("xxx.xxx.bean") public class Application {  	public static void main(String[] args) { 		SpringApplication.run(Application.class, args); 	} }