SSM项目整合及案例

一.SSM环境搭建

1.新建Web项目，导入相关jar包

2.配置web.xml

3.配置文件（/resource）

• database.properties
• Log4j.properties
• mybatis-config.xml
  • 配置typeAliases
  • 设置全局性依赖加载
• applicationContext-mybatis.xml
• springmvc-servlet.xml

二.配置文件详细

1.database.properties

driver=com.mysql.jdbc.Driver url=jdbc:mysql://127.0.0.1:3306/smbms?useUnicode=true&characterEncoding=utf-8 user=root password=root minIdle=45 maxIdle=50 initialSize=5 maxActive=100 maxWait=100 removeAbandonedTimeout=180 removeAbandoned=true

2.Web.xml

<display-name>springMVC</display-name>   <welcome-file-list>     <welcome-file>/WEB-INF/jsp/login.jsp</welcome-file>项目默认登录页面   </welcome-file-list>   <context-param>     <param-name>contextConfigLocation</param-name>     <param-value>classpath:applicationContext-*.xml</param-value>spring配置文件导入   </context-param>   <filter>jSP与Java使用不同编码时，针对编码问题进行过滤     <filter-name>encodingFilter</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>encodingFilter</filter-name>     <url-pattern>/*</url-pattern>   </filter-mapping>   <servlet>     <servlet-name>spring</servlet-name>     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>前端控制器实现     <init-param>       <param-name>contextConfigLocation</param-name>spring-mvc配置文件导入       <param-value>classpath:springmvc-servlet.xml</param-value>     </init-param>     <load-on-startup>1</load-on-startup>标记容器是否在启动的时加载这个servlet，>0表示是，正数越大优先越高   </servlet>   <servlet-mapping>     <servlet-name>spring</servlet-name>     <url-pattern>/</url-pattern>   </servlet-mapping>   <listener>     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>SpringMVC容器初始化   </listener>   <context-param>     <param-name>log4jConfigLocation</param-name>Log4j日志配置     <param-value>classpath:log4j.properties</param-value>   </context-param>   <context-param>     <param-name>webAppRootKey</param-name>     <param-value>SMBMS_C12_09.root</param-value>在Eclipse调试Web项目时，项目的路径是一个临时路径   </context-param>   <listener>     <listener-class> org.springframework.web.util.Log4jConfigListenerlog监听器，spring5以上被废弃 </listener-class>   </listener> </web-app>

3.mybatis-config.xml

<?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>          <!– 是否使用 懒加载 关联对象  同 hibernate中的延迟加载 一样  default:true –>           <setting name="lazyLoadingEnabled" value="false" />        </settings>       <typeAliases>           <!--这里给实体类取别名，方便在mapper配置文件中使用-->          <package name="cn.smbms.pojo"/>      </typeAliases> </configuration>

4.applicationContext-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:aop="http://www.springframework.org/schema/aop"          xmlns:p="http://www.springframework.org/schema/p"          xmlns:tx="http://www.springframework.org/schema/tx"          xmlns:context="http://www.springframework.org/schema/context"          xsi:schemaLocation="               http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd               http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd               http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd             http://www.springframework.org/schema/context             http://www.springframework.org/schema/context/spring-context.xsd">                  <context:component-scan base-package="cn.smbms.service"/> 扫描service层组件     <context:component-scan base-package="cn.smbms.dao"/>  扫描dao层组件         <!-- 读取数据库配置文件 -->     <context:property-placeholder location="classpath:database.properties"/>         <!-- JNDI获取数据源(使用dbcp连接池) -->      <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" scope="singleton">                     <property name="driverClassName" value="${driver}" />  <property name="url" value="${url}" />  <property name="username" value="${user}" />  <property name="password" value="${password}" /> <property name="initialSize" value="${initialSize}"/> <property name="maxActive" value="${maxActive}"/> <property name="maxIdle" value="${maxIdle}"/> <property name="minIdle" value="${minIdle}"/> <property name="maxWait" value="${maxWait}"/> <property name="removeAbandonedTimeout" value="${removeAbandonedTimeout}"/> <property name="removeAbandoned" value="${removeAbandoned}"/> <!-- sql 心跳 --> <property name= "testWhileIdle" value="true"/> <property name= "testOnBorrow" value="false"/> <property name= "testOnReturn" value="false"/> <property name= "validationQuery" value="select 1"/> <property name= "timeBetweenEvictionRunsMillis" value="60000"/> <property name= "numTestsPerEvictionRun" value="${maxActive}"/>     </bean>         <!-- 事务管理 -->            <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">                    <property name="dataSource" ref="dataSource"/>            </bean>                        <!-- 配置mybitas SqlSessionFactoryBean-->     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">             <property name="dataSource" ref="dataSource"/>             <property name="configLocation" value="classpath:mybatis-config.xml"/>     </bean>                <!-- AOP 事务处理 开始 -->    <aop:aspectj-autoproxy /> <aop:config  proxy-target-class="true"> <aop:pointcut expression="execution(* *cn.smbms.service..*(..))" id="transService"/> <aop:advisor pointcut-ref="transService" advice-ref="txAdvice" /> </aop:config> <tx:advice id="txAdvice" transaction-manager="transactionManager">      <tx:attributes>         <tx:method name="smbms*"  propagation="REQUIRED" rollback-for="Exception"  />     </tx:attributes>  </tx:advice> <!-- AOP 事务处理 结束 -->       <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">           <property name="basePackage" value="cn.smbms.dao" />  自动扫描 将Mapper接口生成代理注入到Spring     </bean>     </beans>

连接池相关属性详细

5.springmvc-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:mvc="http://www.springframework.org/schema/mvc"     xmlns:p="http://www.springframework.org/schema/p"     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         http://www.springframework.org/schema/mvc         http://www.springframework.org/schema/mvc/spring-mvc.xsd">         <context:component-scan base-package="cn.smbms.controller"/>扫描控制器层组件 <!-- 解决JSON数据乱码和日期转换问题 --> <mvc:annotation-driven>          <mvc:message-converters>                  <bean class="org.springframework.http.converter.StringHttpMessageConverter">                          <property name="supportedMediaTypes">                                  <list>                                          <value>application/json;charset=UTF-8</value>                                  </list>                          </property>                  </bean>                  <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">                          <property name="supportedMediaTypes">                                  <list>                                          <value>text/html;charset=UTF-8</value>                                          <value>application/json</value>                                  </list>                          </property>                          <property name="features">                                  <list>                                     <!-- Date的日期转换器 -->   <value>WriteDateUseDateFormat</value> </list> </property> </bean> </mvc:message-converters> </mvc:annotation-driven>   <mvc:resources location="/statics/" mapping="/statics/**"></mvc:resources>指定路径静态资源   <!-- 配置多视图解析器：允许同样的内容数据呈现不同的view --> <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver"> <property name="favorParameter" value="true"/> <property name="defaultContentType" value="text/html"/> <property name="mediaTypes"> <map> <entry key="html" value="text/html;charset=UTF-8"/> <entry key="json" value="application/json;charset=UTF-8"/> <entry key="xml" value="application/xml;charset=UTF-8"/> </map> </property> <property name="viewResolvers"> <list> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" > <property name="prefix" value="/WEB-INF/jsp/"/> <property name="suffix" value=".jsp"/> </bean>                 </list> </property> </bean>   <!-- 配置interceptors -->拦截器（bean中的那个类）SysInterceptor.java <mvc:interceptors> <mvc:interceptor> <mvc:mapping path="/sys/**"/> <bean class="cn.smbms.interceptor.SysInterceptor"/> </mvc:interceptor> </mvc:interceptors>     <!-- 配置MultipartResolver，用于上传文件，使用spring的CommonsMultipartResolver -->  <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">  <property name="maxUploadSize" value="5000000"/>  <property name="defaultEncoding" value="UTF-8"/> </bean> </beans>

 

三.（案例）实现登录注销（案例超市订单管理系统）

创建login.jsp <section class="loginCont">         <form class="loginForm" action="${pageContext.request.contextPath }/dologin.html"  name="actionForm" id="actionForm"  method="post" > <div class="info">${error }</div> <div class="inputbox">                     <label for="user">用户名：</label> <input type="text" class="input-text" id="userCode" name="userCode" placeholder="请输入用户名" required/> </div>         <div class="inputbox">                     <label for="mima">密码：</label>                     <input type="password" id="userPassword" name="userPassword" placeholder="请输入密码" required/>                 </div>         <div class="subBtn">                     <input type="submit" value="登录"/>                     <input type="reset" value="重置"/>                 </div>         </form>         </section>

1.实体类(User.java)必须在cn.smbms.pojo.*包下

public class User { private Integer id; //id   @NotEmpty(message="用户编码不能为空") private String userCode; //用户编码   @NotEmpty(message="用户名称不能为空") private String userName; //用户名称   @NotNull(message="密码不能为空") @Length(min=6,max=10,message="用户密码长度为6-10") private String userPassword; //用户密码           @Past(message="必须是一个过去的时间") //@DateTimeFormat(pattern="yyyy-MM-dd") //@JSONField(format="yyyy-MM-dd") private Date birthday;  //出生日期   private Integer gender;  //性别 private String phone;   //电话 private String address; //地址 private Integer userRole;    //用户角色 private Integer createdBy;   //创建者 private Date creationDate; //创建时间 private Integer modifyBy;     //更新者 private Date modifyDate;   //更新时间   private Integer age;//年龄   private String userRoleName;    //用户角色名称   private String idPicPath;        //证件照路径   private String workPicPath; //工作证照片路径   public String getWorkPicPath() { return workPicPath; }   public void setWorkPicPath(String workPicPath) { this.workPicPath = workPicPath; }   public String getIdPicPath() { return idPicPath; }   public void setIdPicPath(String idPicPath) { this.idPicPath = idPicPath; }   public User(){}   public User(Integer id,String userCode,String userName,String userPassword,Integer gender,Date birthday,String phone, String address,Integer userRole,Integer createdBy,Date creationDate,Integer modifyBy,Date modifyDate){ this.id = id; this.userCode = userCode; this.userName = userName; this.userPassword = userPassword; this.gender = gender; this.birthday = birthday; this.phone = phone; this.address = address; this.userRole = userRole; this.createdBy = createdBy; this.creationDate = creationDate; this.modifyBy = modifyBy; this.modifyDate = modifyDate; } public String getUserRoleName() { return userRoleName; } public void setUserRoleName(String userRoleName) { this.userRoleName = userRoleName; } public Integer getAge() { /*long time = System.currentTimeMillis()-birthday.getTime(); Integer age = Long.valueOf(time/365/24/60/60/1000).IntegerValue();*/ Date date = new Date(); Integer age = date.getYear()-birthday.getYear(); return age; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getUserCode() { return userCode; } public void setUserCode(String userCode) { this.userCode = userCode; } public String getUserName() { return userName; } public void setUserName(String userName) { this.userName = userName; } public String getUserPassword() { return userPassword; } public void setUserPassword(String userPassword) { this.userPassword = userPassword; } public Integer getGender() { return gender; } public void setGender(Integer gender) { this.gender = gender; } public Date getBirthday() { return birthday; } public void setBirthday(Date birthday) { this.birthday = birthday; } public String getPhone() { return phone; } public void setPhone(String phone) { this.phone = phone; } public String getAddress() { return address; } public void setAddress(String address) { this.address = address; } public Integer getUserRole() { return userRole; } public void setUserRole(Integer userRole) { this.userRole = userRole; } public Integer getCreatedBy() { return createdBy; } public void setCreatedBy(Integer createdBy) { this.createdBy = createdBy; } public Date getCreationDate() { return creationDate; } public void setCreationDate(Date creationDate) { this.creationDate = creationDate; } public Integer getModifyBy() { return modifyBy; } public void setModifyBy(Integer modifyBy) { this.modifyBy = modifyBy; } public Date getModifyDate() { return modifyDate; } public void setModifyDate(Date modifyDate) { this.modifyDate = modifyDate; } }

2.Dao层(在cn.smbms.dao.*包下)

>创建UserMapper.java接口
public interface UserMapper { /**  * 通过userCode获取User  * @param userCode  * @return  * @throws Exception  */ public User getLoginUser(@Param("userCode")String userCode)throws Exception; }
>创建UserMapper.xml
<mapper namespace="cn.smbms.dao.user.UserMapper"> <select id="getLoginUser" resultType="User"> select * from smbms_user u <trim prefix="where" prefixOverrides="and | or"> <if test="userCode != null"> and u.userCode = #{userCode} </if> </trim> </select> <mapper>

 

3.Service层（必须在cn.smbms.service.*包下）

>创建UserService.java接口
public interface UserService {   /**  * 用户登录  * @param userCode  * @param userPassword  * @return  */ public User login(String userCode,String userPassword) throws Exception;
>创建UserServiceImp.java实现类
@Service public class UserServiceImpl implements UserService {   @Resource private UserMapper userMapper;   @Override public User login(String userCode, String userPassword) throws Exception { // TODO Auto-generated method stub User user = null; user = userMapper.getLoginUser(userCode); //匹配密码 if(null != user){ if(!user.getUserPassword().equals(userPassword)) user = null; } return user; }

 

4.拦截器（Interceptor）创建cn.smbms.interceptor.SysInterceptor类

public class SysInterceptor extends HandlerInterceptorAdapter { private Logger logger = Logger.getLogger(SysInterceptor.class);   public boolean preHandle(HttpServletRequest request,HttpServletResponse response,Object handler) throws Exception{ logger.debug("SysInterceptor preHandle =========================="); HttpSession session = request.getSession();   User user = (User)session.getAttribute(Constants.USER_SESSION);   if(null == user){ response.sendRedirect(request.getContextPath()+"/401.jsp"); return false; } return true; } }

5.Controller层（必须在cn.smbms.controller.*包下）

>创建LoginController.java

@Controller public class LoginController { private Logger logger = Logger.getLogger(LoginController.class);   @Resource private UserService userService;   @RequestMapping(value="/login.html") public String login(){ logger.debug("LoginController welcome SMBMS=================="); return "login"; }   @RequestMapping(value="/dologin.html",method=RequestMethod.POST)验证登录 public String doLogin(@RequestParam String userCode,@RequestParam String userPassword,HttpServletRequest request,HttpSession session) throws Exception{ logger.debug("doLogin===================================="); //调用service方法，进行用户匹配 User user = userService.login(userCode,userPassword); if(null != user){//登录成功 //放入session session.setAttribute(Constants.USER_SESSION, user); //页面跳转（frame.jsp） return "redirect:/sys/main.html"; }else{ //页面跳转（login.jsp）带出提示信息--转发 request.setAttribute("error", "用户名或密码不正确"); return "login"; } }   @RequestMapping(value="/logout.html")注销 public String logout(HttpSession session){ //清除session session.removeAttribute(Constants.USER_SESSION); return "login"; } @RequestMapping(value="/sys/main.html")主页跳转 public String main(){ return "frame"; }   @RequestMapping(value="/syserror.html") public String sysError(){ return "syserror"; }