搭建java项目有疑惑的可以移步看看这个
这是新建的一个空项目
1.首先打开 pom.xml 导入ssm的jar包
<properties>
<!-- spring版本号 -->
<spring-version>4.3.18.RELEASE</spring-version>
<!-- mybatis版本号 -->
<mybatis-version>3.4.2</mybatis-version>
</properties>
<dependencies>
<!-- spring基础包 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring-version}</version>
</dependency>
<!-- spring面向切面编程 -->
<!-- https://mvnrepository.com/artifact/org.springframework/spring-aspects -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring-version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>1.8.13</version>
</dependency>
<!--spring jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.0.0.RELEASE</version>
</dependency>
<!--spring单元测试-->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${spring-version}</version>
<scope>test</scope>
</dependency>
<!-- mysql驱动 -->
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.6</version>
</dependency>
<!-- mybatis -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis-version}</version>
</dependency>
<!-- mybatis整合spring的适配包 -->
<!-- https://mvnrepository.com/artifact/org.mybatis/mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.1</version>
</dependency>
<!-- 逆向工程 -->
<!-- https://mvnrepository.com/artifact/org.mybatis.generator/mybatis-generator-core -->
<dependency>
<groupId>org.mybatis.generator</groupId>
<artifactId>mybatis-generator-core</artifactId>
<version>1.3.5</version>
</dependency>
<!-- 数据库连接池 -->
<!-- https://mvnrepository.com/artifact/c3p0/c3p0 -->
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1</version>
</dependency>
<!-- https://mvnrepository.com/artifact/javax.servlet/servlet-api -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
<!-- https://mvnrepository.com/artifact/jstl/jstl -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/junit/junit -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
<scope>test</scope>
</dependency>
<!-- 分页插件 -->
<!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.0</version>
</dependency>
<!-- 返回 json 字符串 -->
<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.5</version>
</dependency>
<!-- JSR303数据校验 -->
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>5.4.1.Final</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-resources-plugin</artifactId>
<version>2.4.3</version>
</dependency>
<!-- 日志管理 -->
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>1.2.3</version>
</dependency>
</dependencies>这是ssm需要的jar包，在我的机器上没有出现jar包冲突的问题，如果你出现了jar包冲突的问题，去本地的mavne仓库，把这个jar包删掉，重新下载一份，然后 update maven（如果还没有解决的话，自行百度吧，jar包冲突烦人得很）
下载好之后，应该是这个样子的
Maven Dependenices下面有好多jar包
2.在 src/main/resources/ 新建一个 jdbc连接信息
右击 resources --> new --> other 搜索 file
输入名字：jdbc.properties
jdbc.driverClass = com.mysql.cj.jdbc.Driver
jdbc.jdbcUrl = jdbc:mysql://localhost:3306/o2o_school?serverTimezone=GMT&characterEncoding=utf8
jdbc.user = root
jdbc.password = root这些个人配置信息是需要根据自己的电脑配置填写的
3.依旧在这个目录下 新建一个 mybatis-config.xml
这次搜索xml 就好了
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<settings>
<!-- 获取数据库自增主键值 -->
<setting name="useGeneratedKeys" value="true"></setting>
<!-- 使用列标签替换列别名 默认值为true-->
<setting name="useColumnLabel" value="true"></setting>
<!-- 开启驼峰命名规则 Table(create_time)-> Entity(createTime) -->
<setting name="mapUnderscoreToCamelCase" value="true"></setting>
</settings>
</configuration>4.然后在 src/main/resources/ 下面新建一个 spring.xml
右击 resources --> new --> other 搜索 spring
输入 spring.xml 然后确认就好了
打开 spring.xml,然后点击 Namespaces 有对号的打一下对号，导入命名空间,然后点击 source返回
3.配置spring.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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
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-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<!-- 定义需要扫描的包 下面的base-package 的值是需要根据自己的包名修改的-->
<context:component-scan base-package="cn.junhui">
<!-- 除了controller不扫描(web), 其他的都扫描 -->
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!--导入数据库配置文件 -->
<context:property-placeholder
location="classpath:jdbc.properties" />
<!-- 配置数据源 -->
<bean id="pooledDataSource"
class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
<property name="driverClass" value="{jdbc.driverClass}"></property>
<property name="user" value="${jdbc.user}"></property>
<property name="password" value="${jdbc.password}"></property>
</bean>
<!-- 配置和mybatis整合 -->
<bean id="sqlSessionFactory"
class="org.mybatis.spring.SqlSessionFactoryBean">
<!-- 指定mybatis全局配置文件的位置 -->
<property name="configLocation"
value="classpath:mybatis-config.xml"></property>
<property name="dataSource" ref="pooledDataSource"></property>
<!-- 指定mybatis的mapper文件的位置 -->
<property name="mapperLocations"
value="classpath:mapper/*.xml"></property>
<!--扫描entity包 使用别名 -->
<property name="typeAliasesPackage" value="cn.junhui.entity"></property>
</bean>
<!-- 配置扫描器，将mybatis接口的实现加入到ioc容器中去 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<!-- 注入sqlSessionFactory -->
<property name="sqlSessionFactory" value="sqlSessionFactory"></property>
<!--给出需要扫描的dao接口包 -->
<property name="basePackage" value="cn.junhui.dao"></property>
</bean>
<!-- 配置批量操作的sqlSession -->
<bean id="sqlSession"
class="org.mybatis.spring.SqlSessionTemplate">
<constructor-arg name="sqlSessionFactory"
ref="sqlSessionFactory"></constructor-arg>
<constructor-arg name="exectorType" value="BATCH"></constructor-arg>
</bean>
<!-- 配置service层 -->
<!--配置事务控制层 -->
<bean id="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!-- 设置数据源 -->
<property name="dataSource" ref="pooledDataSource"></property>
</bean>
</beans>
5.根据4的步骤新建一个springmvc.xml的配置文件
<?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:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
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-4.3.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd">
<!-- 默认springmvc配置文件 -->
<context:component-scan base-package="cn.junhui"
use-default-filters="false">
<!-- 只扫描controller -->
<context:include-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<!-- 视图解析器 -->
<bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/"></property>
<property name="suffix" value=".jsp"></property>
</bean>
<mvc:view-controller path="/login_page"
view-name="login" />
<!-- 两个标准配置 -->
<!-- 将springmvc不能处理的请求（静态资源）交给tomcat -->
<mvc:default-servlet-handler />
<!-- 能支持springmvc更高级的一些功能，jsr303校验，ajax，映射动态请求 -->
<mvc:annotation-driven />
</beans>
6.编写 web.xml
<?xml version="1.0" encoding="UTF-8"?>
<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_2_5.xsd"
id="WebApp_ID" version="2.5">
<!-- 配置spring -->
<!-- needed for ContextLoaderListener -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring.xml</param-value>
</context-param>
<!-- Bootstraps the root web application context before servlet initialization -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- 配置springmvc -->
<!-- The front controller of this Spring Web application, responsible for
handling all application requests -->
<servlet>
<servlet-name>springDispatcherServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:springmvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<!-- Map all requests to the DispatcherServlet for handling -->
<servlet-mapping>
<servlet-name>springDispatcherServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<!-- 3.字符编码过滤器 一定要放在所有过滤器之前 -->
<filter>
<filter-name>CharacterEncodingFilter</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>CharacterEncodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- 使用rest风格的url 将页面普通的post请求转化为delete或者put请求 -->
<filter>
<filter-name>HiddenHttpMethodFilter</filter-name>
<filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HiddenHttpMethodFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<!-- ajax直接发送put请求 -->
<filter>
<filter-name>HttpPutFormContentFilter</filter-name>
<filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>HttpPutFormContentFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>到此为止,基本就搭建结束了，最后写一个test.jsp测试一下
