1.新建一个Maven项目
直接点击next:
选择这个,这个是指javaWeb项目
输入maven项目的坐标
点击finish,创建项目完成
2.添加maven依赖并下载
找到刚建的maven项目下的pom.xml配置文件,打开:
接下来,在url和dependencies标签中间加上如下内容:
<properties>
<!-- Spring版本号 -->
<spring.version>4.3.8.RELEASE</spring.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
在dependencies和/dependencies标签之间添加依赖:
<!-- Spring相关包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</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-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-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 数据库连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.20</version>
</dependency>
<!-- MyBatis相关包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<!-- MySQL相关包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.26</version>
</dependency>
<!-- Spring集成MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
添加完成后的pom.xml文件是这样的(当然你的文件上面的部分会跟我不一样,版本号也可能不一样):
<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>Tur</groupId>
<artifactId>Tur</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>Tur Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<!-- Spring版本号 -->
<spring.version>4.3.8.RELEASE</spring.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<!-- Spring相关包 -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</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-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-jdbc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- 数据库连接池 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.20</version>
</dependency>
<!-- MyBatis相关包 -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>3.3.0</version>
</dependency>
<!-- MySQL相关包 -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.26</version>
</dependency>
<!-- Spring集成MyBatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.2.3</version>
</dependency>
</dependencies>
<build>
<finalName>Tur</finalName>
</build>
</project>
编辑完pom.xml文件之后,保存,eclipse会自动开始下载相关的依赖,等待下载完成。
3.建立springMVC配置文件
在src/main中创建java文件夹,以后的java文件都存在这个目录下。
在java文件夹下按如图所示路径建立多个文件夹:
在src/main/resources文件夹下创建spring文件夹,然后在spring文件夹下创建spring-mvc.xml文件:
打开spring-mvc.xml,在其中输入如下配置:
<?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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">
<!-- 启动自动扫描 -->
<context:component-scan
base-package="com.tur.controllers" /><!-- 这里写你的要扫面的java包名,我现在这么写就是扫描com.qcbylearn.controllers下的所有类-->
<!-- 注册MVC注解驱动 -->
<mvc:annotation-driven />
<!-- 静态资源可访问的设置方式 -->
<mvc:default-servlet-handler />
<!-- 配置视图解析器,可以显式设置,也可以不设置,不设置会依据SpringMVC的默认设置 -->
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/views/" />
<property name="suffix" value=".jsp" /><!-- 这里会自动在你输入的跳转路径前加上/views/前缀,在跳转路径后加上.jsp后缀 -->
</bean>
</beans>
接下来打开你的webapp下的WEB-INF目录,打开目录下的web.xml文件:
在display-name标签后添加如下内容:
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>Dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
变成这样:
<!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>
<display-name>Archetype Created Web Application</display-name>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-*.xml</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
<servlet-name>Dispatcher</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring/spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>Dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
4.建立myBatis配置文件
在spring目录下建立如下xml文件:
打开文件,输入如下配置:
<?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"
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">
<!-- 导入db配置 -->
<context:property-placeholder ignore-unresolvable="true" location="classpath:spring/db.properties" />
<!-- Druid 数据库连接池-->
<bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
<property name="driverClassName" value="${jdbc.driver}" />
<property name="url" value="${jdbc.url}" />
<property name="username" value="${jdbc.username}" />
<property name="password" value="${jdbc.password}" />
</bean>
<!-- 注册SqlSessionFactoryBean -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 自动扫描mappers.xml文件 -->
<property name="mapperLocations" value="classpath:mybatis/mapper/*.xml" />
</bean>
<!-- DAO接口所在包名,Spring会自动查找其下的类 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.tur.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory" />
</bean>
</beans>
接着,在spring文件夹下新建一个文件:
打开文件,输入如下配置并保存:
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://IP地址:端口号/数据库名
jdbc.username=你的数据库用户名
jdbc.password=你的数据库密码
到此为止2,我们的ssm框架应该是搭好了,我们来验证一下:
现在我们如果直接
我们先来建一个表
表名是person,表结构如下图所示:
在表中输入几行数据:
接下来,我们按照下图结构建立文件:
在BatisMapper.xml中,输入如下内容:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.tur.dao.PersonMapper" >
<resultMap id="BaseResultMap" type="com.tur.entities.Person">
<id column="id" property="id" jdbcType="BIGINT" />
<result column="name" property="name" jdbcType="VARCHAR" />
<result column="sex" property="sex" jdbcType="VARCHAR" />
<result column="age" property="age" jdbcType="INTEGER" />
</resultMap>
<sql id="Base_Column_List">
id, name, sex, age
</sql>
<select id="selectByPrimaryKey" resultMap="BaseResultMap" parameterType="java.lang.Long" >
select
<include refid="Base_Column_List"/>
from person
where id = #{id,jdbcType=INTEGER}
</select>
</mapper>
接下来,我们在java各个包下新建一些java文件:
PersonController.java:
为了简单起见,我们就不调用service层和serviceImpl层了,我们直接在controller层中调用查找数据库的方法
package com.tur.controllers;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import com.tur.dao.PersonMapper;
import com.tur.entities.Person;
@Controller
public class PersonController {
@Autowired
private PersonMapper personMapper;
@RequestMapping(value="a")//设置访问controller的路径
public void test()
{
List<Person> personList = personMapper.selectByPrimaryKey(23359827L);//通过主键去查询数据库
for(Person p : personList)
{
System.out.println(p.toString());//遍历输出查询到的结果
}
}
}
PersonMapper.java:
注意,这是一个接口
package com.tur.dao;
import java.util.List;
import com.tur.entities.Person;
public interface PersonMapper {
List<Person> selectByPrimaryKey(Long id);
}
Person.java:
package com.tur.entities;
public class Person {
private long id;
private String name;
private String sex;
private int age;
public Person()
{
}
public Person(long id, String name, String sex, int age) {
this.id = id;
this.name = name;
this.sex = sex;
this.age = age;
}
//重写toString方法,方便打印出属性的值
@Override
public String toString() {
return "Person [id=" + id + ", name=" + name + ", sex=" + sex + ", age=" + age + "]";
}
}
接下来,让我们直接在浏览器地址输入这个controller的访问路径:
通过这个路径,我们可以直接访问到controller
点击回车,发现跳转到了404错误页面,这个没关系,这是因为我们没设置跳转页面的原因,但是现在去看我们的控制台,发现已经打印出了从数据库中查询到的结果了:
大功告成!