maven项目springMVC+spring+mybatis集成，实现人员登陆

1.创建一个maven项目，pom.xml 代码如下

<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.example</groupId>
<artifactId>maven-springmvc</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>maven-springmvc Maven Webapp</name>
<url>http://maven.apache.org</url>
<properties>
<spring.version>4.3.1.RELEASE</spring.version>
<mybatis.version>3.4.1</mybatis.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>

<!--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-tx</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
f928

<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>

<!-- c3p0 -->
<dependency>
<groupId>com.mchange</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.5.2</version>
</dependency>

<!-- mybatis -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis</artifactId>
<version>${mybatis.version}</version>
</dependency>

<!-- mybatis-spring -->
<dependency>
<groupId>org.mybatis</groupId>
<artifactId>mybatis-spring</artifactId>
<version>1.3.0</version>
</dependency>

<!-- https://mvnrepository.com/artifact/cglib/cglib -->
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib</artifactId>
<version>3.2.2</version>
</dependency>

<!-- https://mvnrepository.com/artifact/com.github.pagehelper/pagehelper -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>5.0.0</version>
</dependency>

</dependencies>

<build>
<finalName>vip</finalName>
<resources>
<!--表示把java目录下的有关xml文件,properties文件编译/打包的时候放在resource目录下-->
<resource>
<directory>${basedir}/src/main/java</directory>
<includes>
<include>**/*.properties</include>
<include>**/*.xml</include>
</includes>
</resource>
<resource>
<directory>${basedir}/src/main/resources</directory>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<!-- put your configurations here -->
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>

</plugins>
</build>
</project>

2.编写web.xml,配置一个字符过滤器，防止乱码。初始化spring容器，创建一个listener，类名为’ContextLoaderListener’并通过’contextConfigLocation’指定applicationContext.xml位置，再配置springMVC，servle 类名为’DispatcherServlet’，把所有.do结尾的请求都交给springMVC来管理，xml位置与spring同理

<filter>
<filter-name>encodeing-filter</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>encodeing-filter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:applicationContext.xml</param-value>
</context-param>

<servlet>
<servlet-name>spring-mvc</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:spring-mvc.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring-mvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>

3.编写spring-mvc.xml文件，由于项目非常简单，只需要配置一个视图解析器，扫描所有的controller类，开启即可。

<!-- 开启注解 -->
<mvc:annotation-driven />

<!-- 静态资源交给默认的servlet-->
<mvc:default-servlet-handler />

<!-- 视图解析 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">

<!-- 重定向时，是否添加上下文路径 -->
<property name="redirectContextRelative" value="true" />
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />

</bean>

<!-- 扫描所有的控制器 -->
<context:component-scan base-package="com.macbeth.vip.controller" />

4.编写applicationContex.xml文件，首先，配置扫描所有的service包，再配置c3p0数据库连接池，再配置事务管理器关联刚刚配置的数据库连接池，通过tx标签，开启注解，使用SqlSessionFactoryBean,指定数据源，mybatis的xml的配置文件，和mapper.xml文件位置，最后通过MapperScannerConfigurer，扫描对应的dao层并指定刚刚配置的SqlSessionFactory。

<context:component-scan base-package="com.macbeth.vip">
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<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/vip"></property>
<property name="user" value="root"></property>
<property name="password" value=""></property>

</bean>

<!-- 配置事务管理器-->
<bean id="dataSourceTransactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

<property name="dataSource" ref="dataSource"></property>

</bean>

<!-- 使用注解来控制事物-->

<tx:annotation-driven transaction-manager="dataSourceTransactionManager"></tx:annotation-driven>

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<property name="mapperLocations">
<list>
<value>classpath:mappers/*Mapper.xml</value>
</list>
</property>
</bean>

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.macbeth.vip.dao"></property>
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>

5.mybatis-config 与mapper，其中mapper文件，namespace要指定对应的dao层类，resoulttype，实体类要和数据库中字段类型一致，sql语句中，不要写成${},id要与方法一致，否则会出现‘Invalid bound’错误。

<?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>
<setting name="cacheEnabled" value="true"/>

<setting name="defaultStatementTimeout" value="3000"/>

<setting name="mapUnderscoreToCamelCase" value="false"/>

<setting name="lazyLoadingEnabled" value="true" />

<setting name="proxyFactory" value="CGLIB" />

</settings>

</configuration>

<?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.macbeth.vip.dao.AdminDao">
<select id="findByAccount" resultType="com.macbeth.vip.entity.AdminEntity">
SELECT * FROM admin WHERE admin_account = #{admin_account}
</select>
</mapper>

6.编写entity，dao，service，controller代码，这里就不贴了，唯一需要注意的是dao层中，字段要加入@Param注解，否则会被当成实体处理

public AdminEntity findByAccount(@Param("admin_account") String admin_account) throws Exception;

7.源码地址：http://download.csdn.net/detail/gen_macbeth/9906312