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