SpringMVC Hibernate与JPA使用教程
作者：正怒月神
这篇文章主要介绍了SpringMVC Hibernate与JPA，在正式进入Hibernate的高级应用之前，需要了解声明是数据模型与领域模型，这两个概念将会帮助我们更好的理解实体对象的关联关系映射
起因：
老项目是SpringMVC，为了之后能使用更方便的SpringBoot。
所以在其中添加了SpringBoot项目，
但是老项目SpringMVC使用的Hibernate，SpringBoot希望使用JPA
解决方案如下：
一、POM
说明：
1 spring boot标签中，是需要添加的架包
由于我的发布方式是tomcat，所以需要打包时过滤springboot中的tomcat
2 build标签中，是打包方式。这里可以不看
3 这里有一个jpa版本的问题。
由于之前使用的jpa版本很低。这导致和springboot2.7.2版本的jpa版本不匹配。
其中，jpa2.7.2版本的findOne方法没有了，改为了findById。
这导致调用基础dao的方法会报错：NoSuchMethod。
所以下面也提供了JPA的架包导入方式。如果JPA版本是匹配的，那直接使用下面注释的
spring-boot-starter-data-jpa
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.14.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.kintech</groupId>
<packaging>war</packaging>
<artifactId>kintech.webInvoice</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>kintech.webInvoice</name>
<description>kintech.webInvoice</description>
<properties>
<java.version>1.8</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring-boot.version>2.1.1.RELEASE</spring-boot.version>
<fastjson.version>2.0.10</fastjson.version>
<spring-cloud.version>2021.0.3</spring-cloud.version>
</properties>
<dependencies>
<!-- srping boot begin-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-tomcat</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<scope>provided</scope>
</dependency>
<!-- srping boot end-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</dependency>
<!--<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
-->
<!-- JPA -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.12.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.4.12.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-ehcache</artifactId>
<version>5.4.12.Final</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-commons</artifactId>
<version>1.13.13.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.11.13.RELEASE</version>
</dependency>
<!-- JPA -->
<!-- kintech begin-->
<dependency>
<groupId>com.kintech</groupId>
<artifactId>kintech.web</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<dependency>
<groupId>com.kintech</groupId>
<artifactId>kintech.common</artifactId>
<version>0.0.1-SNAPSHOT</version>
<exclusions>
<exclusion>
<groupId>redis.clients</groupId>
<artifactId>jedis</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-redis</artifactId>
</exclusion>
<exclusion>
<groupId>org.springframework.session</groupId>
<artifactId>spring-session</artifactId>
</exclusion>
<exclusion>
<groupId>org.apache.commons</groupId>
<artifactId>commons-pool2</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.kintech</groupId>
<artifactId>kintech.service</artifactId>
<version>0.0.1-SNAPSHOT</version>
</dependency>
<!-- kintech end-->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.24</version>
</dependency>
<dependency>
<groupId>cn.hutool</groupId>
<artifactId>hutool-all</artifactId>
<version>5.8.9</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework.cloud</groupId>
<artifactId>spring-cloud-dependencies</artifactId>
<version>${spring-cloud.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<build>
<finalName>${project.name}</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-assembly-plugin</artifactId>
<version>3.0.0</version>
<configuration>
<descriptors>
<descriptor>src/main/assembly/assembly.xml</descriptor>
<!--对应在src/main/resource包下创建buildzip.xml配置文件-->
</descriptors>
</configuration>
<executions>
<execution>
<id>make-assembly</id>
<phase>package</phase>
<goals>
<goal>single</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<testFailureIgnore>true</testFailureIgnore>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.18.1</version>
<configuration>
<skip>true</skip>
<!-- <skipTests>true</skipTests> -->
</configuration>
</plugin>
</plugins>
</build>
</project>二、引入springMVC中的applicationContext.xml
1 先看一下springmvc中的xml
将其拷贝到springboot中的resources下
2 application.yml (springboot)
添加如下：
spring:
main:
allow-bean-definition-overriding: true
三、启动类
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.autoconfigure.data.jpa.JpaRepositoriesAutoConfiguration;
import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.ImportResource;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
//过滤hibernate jpa的自动加载
@SpringBootApplication(exclude = {HibernateJpaAutoConfiguration.class})
//扫描包
@ComponentScan(basePackages={"com.kintech"},lazyInit=true)
//扫描jpa的dao
@EnableJpaRepositories(basePackages = {"com.kintech.dao.jpa"})
//扫描jpa 用到的entity
@EntityScan("com.kintech.model.domain")
//导入springmvc的applicationContext.xml
@ImportResource({"classpath:spring/applicationContext.xml"})
public class WebInvoiceApplication {
public static void main(String[] args) {
SpringApplication.run(WebInvoiceApplication.class, args);
}
}到此这篇关于SpringMVC Hibernate与JPA使用教程的文章就介绍到这了,更多相关SpringMVC Hibernate与JPA内容请搜索脚本之家以前的文章或继续浏览下面的相关文章希望大家以后多多支持脚本之家！