J2EE项目系列（三）--Spring Data JPA+Spring+SpringMVC+Maven快速开发（1）项目架构

好久没给大家弄Java后端项目系列了，因为接了Java后端外包以及学习一些后端优化的东西。而现在开始慢慢在这个系列的（三）逐渐把后端外包的一些有价值的东西分享给大家，并且自己也总结一遍嘛。

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文章结构：（1）项目环境搭建；（2）简单业务逻辑测试框架；（3）项目配置注意点；（4）快速开发上手技巧；

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一、项目环境搭建：

项目框架：Spring Data JPA+Spring+SpringMVC+Maven+JDK1.7+Tomcat7.0

使用IDEA开发

（1）Maven构建：

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>com.fuzhu</groupId> <artifactId>springdatajpa</artifactId> <packaging>war</packaging> <version>1.0-SNAPSHOT</version> <name>springdatajpa Maven Webapp</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <maven.build.timestamp.format>yyyyMMdd'T'HHmmss</maven.build.timestamp.format> <buildNumber>${maven.build.timestamp}</buildNumber> <maven.compiler.target>1.7</maven.compiler.target> <maven.compiler.source>1.7</maven.compiler.source> <java-version>1.7</java-version> <version-springframework>4.0.4.RELEASE</version-springframework> <version-slf4j>1.6.6</version-slf4j> <version-hibernate.validator>5.0.1.Final</version-hibernate.validator> <version-hibernate.jpa>1.0.1.Final</version-hibernate.jpa> <version-hibernate>4.2.6.Final</version-hibernate> <mysql.version>5.1.35</mysql.version> </properties> <dependencies> <!-- Spring MVC --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>${version-springframework}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>${version-springframework}</version> </dependency> <!-- spring 表达式语言 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>${version-springframework}</version> </dependency> <!-- 核心工具包 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>${version-springframework}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>${version-springframework}</version> <exclusions> <!-- Exclude Commons Logging in favor of SLF4j --> <exclusion> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> </exclusion> </exclusions> </dependency> <!-- spring-context 的扩展支持，用于 MVC 方面 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>${version-springframework}</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>${version-springframework}</version> </dependency> <!-- springIoC（依赖注入）的基础实现 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>${version-springframework}</version> </dependency> <!-- Spring事务支持 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>${version-springframework}</version> </dependency> <!-- spring 对Junit 等测试框架的简单封装 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>${version-springframework}</version> </dependency> <!--hibernate的包--> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>${version-hibernate}</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>${version-hibernate}</version> <exclusions> <exclusion> <artifactId>cglib</artifactId> <groupId>cglib</groupId> </exclusion> <exclusion> <artifactId>dom4j</artifactId> <groupId>dom4j</groupId> </exclusion> </exclusions> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>${version-hibernate.validator}</version> </dependency> <dependency> <groupId>org.hibernate.javax.persistence</groupId> <artifactId>hibernate-jpa-2.0-api</artifactId> <version>${version-hibernate.jpa}</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-ehcache</artifactId> <version>${version-hibernate}</version> </dependency> <!-- Spring data jpa --> <dependency> <groupId>org.springframework.data</groupId> <artifactId>spring-data-jpa</artifactId> <version>1.6.2.RELEASE</version> </dependency> <!-- AspectJ --> <dependency> <groupId>org.aspectj</groupId> <artifactId>aspectjrt</artifactId> <version>1.6.10</version> </dependency> <!-- Logging --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>${version-slf4j}</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>jcl-over-slf4j</artifactId> <version>${version-slf4j}</version> <scope>runtime</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <!-- logger end--> <!-- slf4j --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.7.7</version> </dependency> <!--slf4j-log4j12 --> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-log4j12</artifactId> <version>1.7.12</version> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>3.0-alpha-1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- druid dataSource --> <dependency> <groupId>com.alibaba</groupId> <artifactId>druid</artifactId> <version>1.0.0</version> </dependency> <!--mysql --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>${mysql.version}</version> </dependency> <!-- Apache Commons Dependencies --> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-lang3</artifactId> <version>3.3.2</version> </dependency> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3.1</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-digester3</artifactId> <version>3.2</version> </dependency> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.4</version> </dependency> <dependency> <groupId>org.apache.commons</groupId> <artifactId>commons-exec</artifactId> <version>1.2</version> </dependency> <dependency> <groupId>commons-beanutils</groupId> <artifactId>commons-beanutils</artifactId> <version>1.9.1</version> </dependency> <dependency> <groupId>commons-codec</groupId> <artifactId>commons-codec</artifactId> <version>1.9</version> </dependency> <!--common end--> <!-- https://mvnrepository.com/artifact/cglib/cglib --> <dependency> <groupId>cglib</groupId> <artifactId>cglib</artifactId> <version>2.2.2</version> </dependency> <!--fastjson--> <dependency> <groupId>com.alibaba</groupId> <artifactId>fastjson</artifactId> <version>1.2.5</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.1.0</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-annotations</artifactId> <version>2.1.0</version> </dependency> <!-- junit测试的包--> <dependency> <groupId>org.hamcrest</groupId> <artifactId>hamcrest-core</artifactId> <version>1.3</version> <scope>test</scope> </dependency> <dependency> <groupId>org.hamcrest</groupId> <artifactId>hamcrest-library</artifactId> <version>1.3</version> <scope>test</scope> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> </dependencies> <!-- 固定版本1.7--> <build> <finalName>springdatajpa</finalName> <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.7</source> <target>1.7</target> </configuration> </plugin> </plugins> </build> </project>

（2）.spring配置文件：

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context" xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jpa="http://www.springframework.org/schema/data/jpa" xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!--扫描资源文件--> <context:property-placeholder location="classpath:database.properties" ignore-unresolvable="true"/> <!--Druid数据源--> <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource" init-method="init" destroy-method="close"> <property name="driverClassName" value="${database.driverClassName}"/> <property name="url" value="${database.url}" /> <property name="username" value="${database.username}" /> <property name="password" value="${database.password}" /> <!-- 申请连接时执行validationQuery检测连接是否有效，配置为true会降低性能 --> <property name="testOnBorrow" value="false" /> <property name="testOnReturn" value="false" /> <!-- 申请连接的时候检测 --> <property name="testWhileIdle" value="false" /> <!-- 配置间隔多久才进行一次检测，检测需要关闭的空闲连接，单位是毫秒 --> <property name="timeBetweenEvictionRunsMillis" value="1800000" /> <!-- 配置一个连接在池中最小生存的时间，单位是毫秒 --> <property name="minEvictableIdleTimeMillis" value="1800000" /> <property name="defaultAutoCommit" value="false" /> </bean> <!-- 指定事务管理器，JPA使用JpaTransactionManager事务管理器实现. --> <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager"> <property name="entityManagerFactory" ref="entityManagerFactory" /> </bean> <!-- 指定JPA实现 --> <bean id="jpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"> <property name="showSql" value="false" /> </bean> <!-- 适用于所有环境的FactoryBean，能全面控制EntityManagerFactory配置,如指定Spring定义的DataSource等等. --> <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"> <!-- 指定持久化单元名字，即JPA配置文件中指定的 --> <property name="persistenceUnitName" value="com.ima" /> <!-- 见上 --> <property name="jpaVendorAdapter" ref="jpaVendorAdapter" /> <!-- 见上 --> <property name="dataSource" ref="dataSource" /> </bean> <!-- 映射jpa接口--> <jpa:repositories base-package="com.ima.repository" /> <!-- 开启事务管理注解 --> <tx:annotation-driven transaction-manager="transactionManager"/> </beans>

（3）.springMVC的配置：

<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- 开启SpringMVC注解 --> <mvc:annotation-driven /> <!-- 只扫描Controller 注解 --> <context:component-scan base-package="com.ima.controller" use-default-filters="false"> <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller" /> <context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice" /> </context:component-scan> <!-- 定义视图解析器 --> <bean id="resourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views/"/> <property name="suffix" value=".jsp"/> <property name="contentType" value="text/html;charset=UTF-8"/> </bean> <!-- 用于返回json格式 --> <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"> <property name="supportedMediaTypes"> <list> <value>application/x-www-form-urlencoded;charset=UTF-8</value> </list> </property> </bean> <!--上传文件配置--> <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver"> <property name="defaultEncoding" value="utf-8"/> <property name="maxUploadSize" value="10485760"/> <property name="maxInMemorySize" value="40960"/> </bean> <mvc:annotation-driven> <mvc:message-converters register-defaults="true"> <!--字符串编码转换--> <bean id="stringHttpMessageConverter" class="org.springframework.http.converter.StringHttpMessageConverter"> <constructor-arg value="UTF-8"/> </bean> </mvc:message-converters> </mvc:annotation-driven> </beans>

（4）.数据源的配置：

database.url=jdbc:mysql://127.0.0.1:3306/aidou?useUnicode=true&characterEncoding=utf8 database.username=root database.password=751197996 database.driverClassName=com.mysql.jdbc.Driver

（5）.log4j的日志配置（见源码）

（6）.JPA的配置包，指定持久化单元：

<?xml version="1.0" encoding="UTF-8" standalone="no"?> <persistence xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.0" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd"> <persistence-unit name="com.ima" transaction-type="RESOURCE_LOCAL"> <!--ENABLE_SELECTIVE[(默认和推荐值):实体不缓存,除非明确标记为可缓存的。] DISABLE_SELECTIVE[实体缓存,除非明确标记为不缓存] NONE[无缓存] ALL[全部缓存]--> <shared-cache-mode>ENABLE_SELECTIVE</shared-cache-mode> <properties> <!-- 使用MySQL方言 --> <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/> <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver" /> <property name="hibernate.connection.url" value="jdbc:mysql:///aidou" /> <property name="hibernate.connection.username" value="root" /> <property name="hibernate.connection.password" value="751197996" /> <property name="hibernate.connection.charSet" value="UTF-8" /> <!-- 自动输出schema创建DDL语句 --> <property name="hibernate.hbm2ddl.auto" value="update" /> <!-- 显示SQL语句 --> <property name="hibernate.show_sql" value="true" /> <!-- 在显示SQL语句时格式化语句 --> <property name="hibernate.format_sql" value="true" /> <property name="hibernate.use_sql_comments" value="true" /> <!--org.hibernate.cache.EhCacheRegionFactory --> <!-- Enable Batching --> <property name="hibernate.jdbc.batch_size" value="20" /> <property name="hibernate.default_batch_fetch_size" value="10" /> <!-- Hibernate二级缓存相关配置 --> <!-- 开启二级缓存 --> <property name="hibernate.cache.use_second_level_cache" value="true" /> <!-- 打开Hibernate查询缓存 --> <property name="hibernate.cache.use_query_cache" value="true" /> <!-- 配置缓存提供者 --> <property name="hibernate.cache.region.factory_class" value="org.hibernate.cache.ehcache.EhCacheRegionFactory" /> <property name="hibernate.generate_statistics" value="true" /> </properties> </persistence-unit> </persistence>

（7）.web.xml配置

<!DOCTYPE web-app PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN" "http://java.sun.com/dtd/web-app_2_3.dtd" > <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation=" http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" version="3.0"> <display-name>Archetype Created Web Application</display-name> <!-- Spring 配置 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:META-INF/spring/spring-jpa.xml</param-value> </context-param> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- log4j 系统日志--> <context-param> <param-name>log4jConfigLocation</param-name> <param-value>classpath:META-INF/log4j.properties</param-value> </context-param> <listener> <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class> </listener> <!-- 使用spring Encoding,设置为UTF-8 --> <filter> <filter-name>Set Character Encoding</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>Set Character Encoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- Spring MVC 启动配置 --> <servlet> <servlet-name>appServlet</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:META-INF/springmvc/spring-mvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>appServlet</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <filter> <filter-name>Spring OpenEntityManagerInViewFilter</filter-name> <filter-class>org.springframework.orm.jpa.support.OpenEntityManagerInViewFilter</filter-class> <init-param> <!-- 指定org.springframework.orm.jpa.LocalEntityManagerFactoryBean在spring配置文件中的名称,默认值为entityManagerFactory 如果LocalEntityManagerFactoryBean在spring中的名称不是entityManagerFactory,该参数一定要指定,否则会出现找不到entityManagerFactory的例外 --> <param-name>entityManagerFactoryBeanName</param-name> <param-value>entityManagerFactory</param-value> </init-param> </filter> <filter-mapping> <filter-name>Spring OpenEntityManagerInViewFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- Druid,监控数据库,以及WEB访问连接信息 --> <!--根据配置中的url-pattern来访问内置监控页面，如果是上面的配置，内置监控页面的首页是/druid/index.html--> <filter> <filter-name>DruidWebStatFilter</filter-name> <filter-class>com.alibaba.druid.support.http.WebStatFilter</filter-class> <init-param> <param-name>exclusions</param-name> <param-value>*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*</param-value> </init-param> <init-param> <param-name>sessionStatMaxCount</param-name> <param-value>1000</param-value> </init-param> <init-param> <param-name>sessionStatEnable</param-name> <param-value>false</param-value> </init-param> </filter> <filter-mapping> <filter-name>DruidWebStatFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <servlet> <servlet-name>DruidStatView</servlet-name> <servlet-class>com.alibaba.druid.support.http.StatViewServlet</servlet-class> <init-param> <!-- 允许清空统计数据 --> <param-name>resetEnable</param-name> <param-value>true</param-value> </init-param> <init-param> <!-- 用户名 --> <param-name>loginUsername</param-name> <param-value>druid</param-value> </init-param> <init-param> <!-- 密码 --> <param-name>loginPassword</param-name> <param-value>druid</param-value> </init-param> </servlet> <servlet-mapping> <servlet-name>DruidStatView</servlet-name> <url-pattern>/druid/*</url-pattern> </servlet-mapping> </web-app>

这样就完成了工程的配置了！！！

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二、简单业务逻辑测试框架

简单的bean：（为了偷懒就用JPA自动建表了，不过后面会给出sql，而且JPA自动建表有坑！！）

//积分变化记录 @Entity @Table(name = "i_dou_change") public class IDouChange { private Long id; //积分变化的类型，拉黑或者在线或者充值 private String changeType; private Date createTime; //积分变化数 private Integer iDouCount; //积分变化者 private User user; public IDouChange() { } @Id @GeneratedValue public Long getId() { return id; } public void setId(Long id) { this.id = id; } @Column(name = "change_type") public String getChangeType() { return changeType; } public void setChangeType(String changeType) { this.changeType = changeType; } @Temporal(TemporalType.TIMESTAMP) @Column(name = "create_time",nullable=true,columnDefinition="timestamp default current_timestamp") public Date getCreateTime() { return createTime; } public void setCreateTime(Date createTime) { this.createTime = createTime; } @Column(name = "i_dou_count") public Integer getiDouCount() { return iDouCount; } public void setiDouCount(Integer iDouCount) { this.iDouCount = iDouCount; } //简单的多对一 @JoinColumn(name="user_id") @ManyToOne(fetch= FetchType.LAZY) public User getUser() { return user; } public void setUser(User user) { this.user = user; } }

对应的repository接口dao

@Repository public interface AiDouChangeRepository extends JpaRepository<IDouChange, Long> { }

对应的service

@Service public class AiDouService { @Autowired private AiDouChangeRepository aiDouChangeRepository; public void save(IDouChange iDouChange){ aiDouChangeRepository.save(iDouChange); } }

写个测试的controller

@RestController @RequestMapping("/user") public class UserController { @Autowired private UserService userService; @Autowired private AiDouService aiDouService; //test： @RequestMapping(value = "/test", method = {RequestMethod.GET, RequestMethod.POST}, produces = "text/html;charset=UTF-8") //测试嘛 public String test(String type, Integer iDouCount ) { DTO dto = new DTO(); IDouChange iDouChange = new IDouChange(); iDouChange.setChangeType(type); iDouChange.setiDouCount(iDouCount); aiDouService.save(iDouChange); if (iDouChange == null) { dto.code = "-1"; dto.msg = "Have bean registered"; return JSON.toJSONString(dto); } else { return JSON.toJSONString(iDouChange); } } }

然后？？直接部署呀！！对应传参，测试成功咯！！！

一对多没实现关联，傻逼的插入就是这样的啦

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三、项目配置注意点：

还有就是在web.xml中映射好spring文件以及springMVC文件

四、快速开发上手技巧：

（1）在一般项目时，使用这个框架Spring Data JPA+Spring+SpringMVC+Maven，快速映射dao层即可编写业务

（2）接口文档工具，swagger+postman，让前端移动端更快速接入

（3）数据库最好还是新建好导入，再用IDEA的persistence导入，这样的话，编码问题就不会出现太多。用IDEA的persistence导入姿势

（4）虽然不建议用jpa自动建表，因为有编码问题，不懂的人，就尴尬了，要搞很久，这个系列的第三篇博客会讲解怎么解决这个的编码问题。

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源码下载：J2EE项目系列（三）–Spring Data JPA+Spring+SpringMVC+Maven快速开发（1）项目架构

好了，J2EE项目系列（三）–Spring Data JPA+Spring+SpringMVC+Maven快速开发（1）项目架构讲完了。本博客是这个系列的第一篇，所以先讲下项目架构。另外，这个系列还有一些我在外包项目过程中做的优化，七牛云，云旺IM等使用，以及解决一些小bug等等技巧，我会尽快出完给大家，分享经验给大家。欢迎在下面指出错误，共同学习！！你的点赞是对我最好的支持！！

更多内容，可以访问JackFrost的博客