maven + spring boot + spring data jpa + thymeleaf框架整合

yangjinpingc

2018-05-20

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Spring Boot简介

Spring Boot是基于Spring4的条件注册的一套快速开发整合包，用于快速、敏捷地开发新一代基于Spring框架的应用程序。

JPA和spring data jpa简介

JPA(Java Persistence API)是Sun官方提出的Java持久化规范。它为Java开发人员提供了一种对象/关联映射工具来管理Java应用中的关系数据。它的出现主要是为了简化现有的持久化开发工作和整合ORM技术。

Spring data jpa是在JPA规范下提供了Repository层的实现，但是使用哪一种ORM需要你来决定（默认用Hibernate实现）。

thymeleaf简介

Thymeleaf是一款用于渲染XML/XHTML/HTML5内容的模板引擎。

整合过程介绍（开发工具：IntelliJ IDEA ）

项目结构如下：

1、创建maven项目，pom.xml配置如下：

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.xieke.test</groupId>
    <artifactId>springboot-demo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>1.5.1.RELEASE</version>
    </parent>
    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.39</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-thymeleaf -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
            <version>1.4.0.RELEASE</version>
        </dependency>
        <!-- https://mvnrepository.com/artifact/org.springframework.data/spring-data-jpa -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
            <version>1.5.1.RELEASE</version>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <!-- 实现热部署， mvn spring-boot:run 启动应用有效 -->
                <dependencies>
                    <dependency>
                        <groupId>org.springframework</groupId>
                        <artifactId>springloaded</artifactId>
                        <version>1.2.5.RELEASE</version>
                    </dependency>
                </dependencies>
            </plugin>
        </plugins>
    </build>
</project>

2、添加application.properties文件到 resources下，配置如下：

server.port=8080
server.tomcat.uri-encoding=utf-8

#MySQL
spring.datasource.driver-class-name=com.mysql.jdbc.Driver
#spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?characterEncoding=utf8
spring.datasource.username=root
spring.datasource.password=999999

#Spring Data JPA(Spring Boot 默认使用hibernate作为JPA的实现)
spring.jpa.database=MYSQL
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect

#视图层控制(view默认配置)
spring.mvc.view.prefix=classpath:/templates/
spring.mvc.view.suffix=.html
spring.mvc.static-path-pattern=/static/**

# 是否启用thymeleaf模板解析
spring.thymeleaf.enabled=true
# 是否开启模板缓存（建议：开发环境下设置为false，生产环境设置为true）
spring.thymeleaf.cache=false

3、在resources下新建static/ scripts，templates/ user文件夹用来存放js，html文件

3.1 index.html

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8"/>
    <script src="../../static/scripts/jquery.min.js"></script>
    <script src="../../static/scripts/test.js"></script>
    <title>Title</title>
</head>
<body>
    <h1>TEST PAGE</h1>
</body>
</html>

3.2 test.js

$(document).ready(function (){
    alert("OK TEST");
});

4、java 主要配置文件如下：

4.1 JPA配置类JpaConfiguration.java

package com.xieke.test.configuration;

import org.springframework.boot.autoconfigure.domain.EntityScan;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.core.Ordered;
import org.springframework.core.annotation.Order;
import org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.transaction.annotation.EnableTransactionManagement;

@Order(Ordered.HIGHEST_PRECEDENCE) // 最高值优先，默认最低值优先
@Configuration
@EnableTransactionManagement(proxyTargetClass = true)
@EnableJpaRepositories(basePackages = "com.xieke.test.repository")
@EntityScan(basePackages = "com.xieke.test.entity")
public class JpaConfiguration {
    @Bean
    PersistenceExceptionTranslationPostProcessor persistenceExceptionTranslationPostProcessor(){
        return new PersistenceExceptionTranslationPostProcessor();
    }
}

4.2 项目启动类Entry.java

package com.xieke.test.configuration;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.annotation.ComponentScan;

/**
 * 项目启动入口，配置包根路径
 */
@SpringBootApplication
@ComponentScan(basePackages = "com.xieke.test")
public class Entry {
    public static void main(String[] args) throws Exception {
        SpringApplication.run(Entry.class, args);
    }
}

5、其他具体业务实现代码就不全部贴出来了，详细代码请参考码云。

thymeleaf jpa spring框架 boot 框架