ssm配置

本次采用的Spring MVC Jar包如下：

spring-aop-4.1.3.RELEASE.jar
spring-beans-4.1.3.RELEASE.jar
spring-context-4.1.3.RELEASE.jar
spring-context-support-4.1.3.RELEASE.jar
spring-core-4.1.3.RELEASE.jar
spring-expression-4.1.3.RELEASE.jar
spring-jdbc-4.1.3.RELEASE.jar
spring-oxm-4.1.3.RELEASE.jar
spring-tx-4.1.3.RELEASE.jar
spring-web-4.1.3.RELEASE.jar
spring-webmvc-4.1.3.RELEASE.jar

1.首先创建Web项目
web.mvc
2.引入所有的jar文件
3.配置web.xml
做web开发的都知道,web.xml是项目的入口，我们既然使用spring那么当然要添加Spring的支持啦！
spring默认加载的是applicationContext.xml，由于我们需要集成MyBatis
所以我把Spring的配置文件强制指定名称，并与MyBatis一起配置，减少配置文件数量
先指定spring配置文件名名称与路径

<!--  Spring 上下文参数 加载Spring配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:xmlconfig/springmvc-mybatis.xml</param-value>
    </context-param>

再执行Spring上下文监听配置

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

添加支持Spring mvc 的配置
说明：添加支持目前有3种方式。第一种：拦截 /*.do

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

优势：拦截明确，不会和其他的拦截冲突
缺点：URL不美观

第二种：拦截 /*

<!-- spring mvc 拦截器配置 -->
<servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:/xmlconfig/springmvc-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/*</url-pattern>
</servlet-mapping>

优点：支持rest风格，Url美观
缺点：会拦截静态资源

第三种，也是我推荐的一种：拦截 /

<!-- spring mvc 拦截器配置 -->
<servlet>
    <servlet-name>springmvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:/xmlconfig/springmvc-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
    <servlet-name>springmvc</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>

优点：支持rest风格，URL美观，不拦截静态资源
我们采用第三种做为我们的拦截方案，将配置添加到web.xml中。
大家都知道，web项目最怕的就是乱码，而spring为我们提供了字符编码的过滤器，我们也给配置到web.xml中

<!-- 字符编码配置 -->
<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>

<!-- 字符编码配置 -->
<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>

我们采用的是tomcat服务器，为了让静态的资源直接交给tomcat处理，所以我们在web.xml中配置了以下配置

<!-- 激活Tomcat的defaultServlet来处理静态文件 -->
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.gif</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.png</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.css</url-pattern>
</servlet-mapping>

<!-- 激活Tomcat的defaultServlet来处理静态文件 -->
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.jpg</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.gif</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.png</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.js</url-pattern>
</servlet-mapping>
<servlet-mapping>
    <servlet-name>default</servlet-name>
    <url-pattern>*.css</url-pattern>
</servlet-mapping>

4.配置springmvc-mybatis.xml和springmvc-servlet.xml
相信很多人都在这里卡主了，因为配置实在是太多了，各种方式都有
为了不妨碍大家，我决定直接将完整的配置直接贴出来
springmvc-mybatis.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:p="http://www.springframework.org/schema/p"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:util="http://www.springframework.org/schema/util"
       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
            http://www.springframework.org/schema/util
            http://www.springframework.org/schema/util/spring-util-4.1.xsd">

    <!-- 数据源定义-->
    <bean id="dataSource" class="com.jolbox.bonecp.BoneCPDataSource">
        <property name="driverClass" value="jdbc:mysql://127.0.0.1:3306/web" />
        <property name="jdbcUrl" value="root" />
        <property name="username" value="123456" />
        <property name="password" value="com.mysql.jdbc.Driver" />
    </bean>

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

    <!-- 配置事务管理器 -->
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource" />
    </bean>

    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource">
            <ref bean="dataSource" />
        </property>
    </bean>
    <bean id="defaultLobHandler"
          class="org.springframework.jdbc.support.lob.DefaultLobHandler"
          lazy-init="true"/>
    <!-- 查 找 类 路 径 下 的 映 射 器 并 自 动 将 它 们 创 建 成 MapperFactoryBean-->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ansitech.web.orm.mapper" />
    </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/mvc
       http://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd
        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">

    <description>Spring MVC Configuration</description>

    <!-- 对静态资源文件的访问，交给default servlet handler处理 -->
    <mvc:default-servlet-handler/>

    <!-- 启用spring mvc 注解 -->
    <context:annotation-config />

    <!-- 默认的注解映射的支持 -->
    <mvc:annotation-driven />

    <!-- 设置使用注解的类所在的jar包 -->
    <context:component-scan base-package="com.ansitech.web"></context:component-scan>

    <!-- 完成请求和注解POJO的映射 -->
<bean class=
      "org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"/>

    <!-- JSP视图文件解析配置 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
    <property name="prefix" value="/WEB-INF/view/"/>
    <property name="suffix" value=".jsp"/>
    <property name="viewNames" value="jsp/*"/>
    <property name="order" value="1"/>
</bean>

<bean class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
    <property name="prefix" value="/WEB-INF/view/"/>
    <property name="suffix" value=".jsp"/>
    <property name="order" value="2"/>
</bean>

    <!-- 上传文件拦截，设置最大上传文件大小 10M=10*1024*1024(B)=10485760 bytes -->
    <bean id="multipartResolver"
          class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- one of the properties available; the maximum file size in bytes -->
        <property name="maxUploadSize">
            <value>5242880</value>
        </property>
    </bean>
</beans>

web.xml

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns="http://java.sun.com/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
         http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
         version="3.0">
    <!-- 程序Session配置 -->
    <session-config>
        <!-- Session过期时间(单位：分) -->
        <session-timeout>30</session-timeout>
    </session-config>

    <!-- 激活Tomcat的defaultServlet来处理静态文件 -->
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.jpg</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.gif</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.png</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.js</url-pattern>
    </servlet-mapping>
    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.css</url-pattern>
    </servlet-mapping>

    <!--  Spring 上下文参数 加载Spring配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath*:xmlconfig/springmvc-mybatis.xml</param-value>
    </context-param>

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

    <!-- spring mvc 拦截器配置 -->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath*:/xmlconfig/springmvc-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!-- 字符编码配置 -->
    <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>

    <!-- 欢迎页 -->
    <welcome-file-list>
        <welcome-file>/index.html</welcome-file>
    </welcome-file-list>
</web-app>

接下来就是包的结构了
前缀大家可以自己定义自己喜欢的，但是后边的结构，是整个框架的核心，所以请大家按照我的格式去建
前缀com.ansitech
com.ansitech.orm
com.ansitech.orm.base
com.ansitech.orm.mapper
com.ansitech.service
com.ansitech.service.po
com.ansitech.service.impl
com.ansitech.web
com.ansitech.web.controller
大家可能不理解，为什么要这么建呢？
那么我们来以用户管理模块来解释，用户对象为User
那么我们需要建立基础对象：
com.ansitech.orm.base.User.Java

package com.ansitech.orm.base;

/**
 * 用户对象
 *
 * @author qsyang
 */
public class User {

    private int id;
    private String loginName;
    private String loginPwd;
    /**
     * 用户类型 1 管理员 2 普通用户
     */
    private int typeId;

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getLoginName() {
        return loginName;
    }

    public void setLoginName(String loginName) {
        this.loginName = loginName;
    }

    public String getLoginPwd() {
        return loginPwd;
    }

    public void setLoginPwd(String loginPwd) {
        this.loginPwd = loginPwd;
    }

    public int getTypeId() {
        return typeId;
    }

    public void setTypeId(int typeId) {
        this.typeId = typeId;
    }
}

基础对象建好了，我们需要做一个Mapper来实现用户对象的增删改查

com.ansitech.orm.mapper.UserMapper.java

package com.ansitech.orm.mapper;

import com.ansitech.orm.base.User;
import org.apache.ibatis.annotations.Param;

/**
 * 用户数据接口
 *
 * @author qsyang
 */
public interface UserMapper {

    void add(User user);

    User get(@Param("id") int id);

    void update(User user);

    int delete(@Param("id") int id);

}

使用ORM模式，我们需要创建一个抽象的用户对象来解决额外属性查询的问题

com.ansitech.orm.AbstractUser.java

package com.ansitech.orm;

import com.ansitech.orm.base.User;

/**
 * 抽象用户对象
 *
 * 提供其他属性获取
 *
 * @author qsyang
 */
public abstract class AbstractUser extends User{

    //获取当前用户所属分类名称
    public abstract String findTypeName();
}

有了数据接口了，我们需要对外提供服务

com.ansitech.service.IUserService.java

package com.ansitech.service;

import com.ansitech.orm.AbstractUser;
import com.ansitech.orm.base.User;

/**
 * 用户服务接口
 *
 * @author qsyang
 */
public interface IUserService {

    //添加系统管理员
    void addSystemUser(String loginName, String loginPwd);

    //添加普通用户
    void addNormalUser(String loginName, String loginPwd);

    //根据用户Id查询抽象用户
    AbstractUser getAbstractUserById(int userId);

    //根据用户Id查询用户
    User getUserById(int userId);

    //修改用户信息
    void updateUser(int userId, String loginName, String loginPwd);

    //根据用户Id删除用户
    int deleteUser(int userId);
}

有了服务接口，就要有实现接口

com.ansitech.service.impl.UserService.java

package com.ansitech.service.impl;

import com.ansitech.orm.AbstractUser;
import com.ansitech.orm.base.User;
import com.ansitech.orm.mapper.UserMapper;
import com.ansitech.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

/**
 * 用户接口实现类
 *
 * @author qsyang
 */
@Service
public class UserService implements IUserService {

    @Autowired
    private UserMapper userMapper;

    @Override
    public void addSystemUser(String loginName, String loginPwd) {
        User user = new User();
        user.setLoginName(loginName);
        user.setLoginPwd(loginPwd);
        //用户类型 1 管理员 2 普通用户
        user.setTypeId(1);
        userMapper.add(null);
    }

    @Override
    public void addNormalUser(String loginName, String loginPwd) {
        User user = new User();
        user.setLoginName(loginName);
        user.setLoginPwd(loginPwd);
        //用户类型 1 管理员 2 普通用户
        user.setTypeId(2);
        userMapper.add(null);
    }

    @Override
    public AbstractUser getAbstractUserById(int userId) {
        throw new UnsupportedOperationException("Not supported yet.");
    }

    @Override
    public User getUserById(int userId) {
        return userMapper.get(userId);
    }

    @Override
    public void updateUser(int userId, String loginName, String loginPwd) {
        //先根据用户Id查询用户对象
        User user = userMapper.get(userId);
        if (user != null) {
            user.setLoginName(loginName);
            user.setLoginPwd(loginPwd);
            //修改用户
            userMapper.update(user);
        }
    }

    @Override
    public int deleteUser(int userId) {
        return userMapper.delete(userId);
    }

}<span style="font-family: Arial; font-size: 14px; line-height: 26px;">细心的便宜，可能已经看到了，getAbstractUserById()这个方法我们还没有实现</span><br style="font-family: Arial; font-size: 14px; line-height: 26px;" /><span style="font-family: Arial; font-size: 14px; line-height: 26px;">因为AbstractUser还有具体的实现类，所以我们来新建实现类</span>

<span style="font-family: Arial; font-size: 14px; line-height: 26px;"></span><pre name="code" class="html">package com.ansitech.service.po;

import com.ansitech.orm.AbstractUser;
import com.ansitech.orm.base.User;
import com.ansitech.service.impl.UserService;

/**
 * 用户数据操作对象
 *
 * @author qsyang
 */
public class UserPO extends AbstractUser {

    private final UserService userService;

    public UserPO(UserService userService) {
        this.userService = userService;
    }

    public UserPO copyFrom(User obj) {
        this.setId(obj.getId());
        this.setLoginName(obj.getLoginName());
        this.setLoginPwd(obj.getLoginPwd());
        this.setTypeId(obj.getTypeId());
        return this;
    }

    @Override
    public String findTypeName() {
        return userService.findTypeName(this.getTypeId());
    }

}

对象已经创建好了，这个时候我们可以修改下service实现类的方法了，并且我们增加了一个方法
增加这个方法，只是因为我们有可能需要继续调用其他的Mapper去查询。
修改的实现方法

@Override
public AbstractUser getAbstractUserById(int userId) {
    User user = userMapper.get(userId);
    if (user != null) {
        UserPO po = new UserPO(this);
        po.copyFrom(user);
        return po;
    }
    return null;
}

新增的方法：

public String findTypeName(int typeId) {
    if (typeId == 1) {
        return "系统管理员";
    } else {
        return "普通用户";
    }
}

只有一来，Service架构和orm架构就已经完成了，下面只需要建立控制器就可以了

package com.ansitech.web.controller.user;

import com.ansitech.orm.base.User;
import com.ansitech.service.impl.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

/**
 * 用户控制器
 *
 * @author qsyang
 */
@Controller
public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping("/user/user-index")
    public String index() {
        User user = userService.getUserById(1);
        if (user != null) {
            System.out.println("user name = " + user.getLoginName());
        }
        return "jsp/user/index";
    }
}