SpringMVC Hibernate与JPA使用教程
正怒月神 人气:0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);
}
}加载全部内容