idea 搭建maven构建的springmvc+hibernate

1.create new project 如下图新建项目,注意勾选 create from archetype



填写好group id等信息后，一路下一步

2.在pom.xml里添加依赖,我的pom.xml:

<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.test</groupId>
<artifactId>demo</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>sample Maven Webapp</name>
<url>http://maven.apache.org</url>

<properties>
<!-- spring版本号 -->
<spring.version>4.3.1.RELEASE</spring.version>
</properties>

<!--项目依赖 -->
<dependencies>
<!--日志包-->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.21</version>
</dependency>

<!--j2ee相关包 servlet、jsp、jstl-->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.2</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>

<!--mysql驱动包-->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.35</version>
</dependency>

<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.2.12.Final</version>
</dependency>

<!--spring相关包-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring.version}</version>
</dependency>

<!--其他需要的包-->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.4</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.3.1</version>
</dependency>
<dependency>
<groupId>javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.12.1.GA</version>
</dependency>

<!-- Gson -->
<dependency>
<groupId>com.google.code.gson</groupId>
<artifactId>gson</artifactId>
<version>2.8.0</version>
</dependency>

<!-- c3p0 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>

</dependencies>
<build>
<finalName>demo</finalName>
</build>
</project>

3.添加applicationContext.xml和spring-servlet.xml：

在WEB-INF目录下新建applicationContext.xml和spring-servlet.xml:

applicationContext.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd"> 
<context:annotation-config/>
<context:component-scan base-package="dao"/>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver">
</property>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/test1"></property>
<property name="user" value="root"></property>
<property name="password" value="root"></property>
<!--连接池中保留的最小连接数。-->
<property name="minPoolSize" value="10"/>
<!--连接池中保留的最大连接数。Default: 15 -->
<property name="maxPoolSize" value="10"/>
<!--最大空闲时间,10秒内未使用则连接被丢弃。若为0则永不丢弃。Default: 0 -->
<property name="maxIdleTime" value="10"/>
<!--当连接池中的连接耗尽的时候c3p0一次同时获取的连接数。Default: 3 -->
<property name="acquireIncrement" value="3"/>
</bean>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate5.LocalSessionFactoryBean">
<property name="packagesToScan" value="model"/>
<property name="dataSource">
<ref bean="dataSource"/>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.connection.url">jdbc:mysql://localhost:3306/test1</prop>
<prop key="hibernate.connection.driver_class">com.mysql.jdbc.Driver</prop>
</props>
</property>
</bean>

</beans>

spring-servlet.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans  http://www.springframework.org/schema/beans/spring-beans-4.1.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.1.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd"> 
<!-- 扫描controller包中的bean -->
<context:component-scan base-package="controller"/>
<!-- 将没有url映射的请求交给web服务器的default servlet处理 -->
<mvc:default-servlet-handler/>
<mvc:annotation-driven>
<mvc:message-converters register-defaults="true">
<bean class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="supportedMediaTypes" value="text/html;charset=UTF-8"/>
</bean>
</mvc:message-converters>
</mvc:annotation-driven>

<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver"
id="internalResourceViewResolver">
<!-- 前缀 -->
<property name="prefix" value="/"/>
<!-- 后缀 -->
<property name="suffix" value=".jsp"/>
</bean>
</beans>

此时两个文件有有错误，因为相关包还没创建，先不管.

4.修改web.xml:

<?xml version="1.0" encoding="UTF-8"?>
<web-app
version="3.1"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"> <display-name>sample</display-name>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
<welcome-file>index.jsp</welcome-file>
<welcome-file>default.html</welcome-file>
<welcome-file>default.htm</welcome-file>
<welcome-file>default.jsp</welcome-file>
</welcome-file-list>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

<!-- springMVC servlet -->
<servlet>
<servlet-name>spring</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/</url-pattern><!-- 监听所有请求 -->
</servlet-mapping>

</web-app>

4.在main目录下新建目录，名称java，并将java目录设置为源码目录



5.在java目录下新建三个包：controller,dao,model

并在controller包中新建类Test:

package controller;

import com.google.gson.Gson;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;

@Controller
public class Test {

@RequestMapping(value = "/test",produces = "application/json;charset=UTF-8")
@ResponseBody
public String test() {

return "hello springMVC";
}
}

6.发布到tomcat上并运行，至于怎样添加tomcat并发布，请自行搜索，此处省略

在地址栏输入:http://localhost:8080/test 即可看到"hello springMVC"字样，证明springMVC搭建成功

7.添加hibernate支持:

选择File->Project Structure 在左边菜单栏选择 Facet ，点加号，选择Hibernate



然后选OK就可以，不需要添加hibernate.cfg.xml，我们用applicationContext.xml配置hibernate

8.在idea中配置mysql数据库连接，此处省略，请自行搜索

9.打开persistence选项卡，在项目上点右键，选择Assign Data Sources,选择刚才建立的数据库连接

在新窗口中按下图配置



此表中有外键，一个user对应多个blog，blog表中的字段user_id表示对应的user表中的id

因此需要设置外键关系，选中blog表，点上面的加号，然后按下图配置：



然后点ok

10，在dao包下新建UserDAO类，代码如下：

package dao;

import model.Blog;
import model.User;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.query.Query;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service
public class UserDAO {

@Resource
SessionFactory sf;

public List<Blog> query(){

Session session = sf.openSession();
Query query = session.createQuery("from Blog ");
List<Blog> list = query.list();
for (int i = 0; i < list.size(); i++) {
Blog blog = list.get(i);
User user = blog.getUserByUID();
user.getName();
user.setBlogById(null);
blog.setUserByUID(user);
}
session.close();
return list;
}
}
修改Test.java代码如下：

package controller;

import com.google.gson.Gson;
import dao.UserDAO;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.annotation.Resource;

@Controller
public class Test extends Base {

@Resource
UserDAO ud;

@RequestMapping(value = "/test",produces = "application/json;charset=UTF-8")
@ResponseBody
public String test() {

return new Gson().toJson(ud.query());
}
}


重新访问 http://localhost:8080/test
即可看到连同外键一起查询到的结果