SSM 人事管理系统---> 整理

最近刚用ssm写完 人事管理 系统，记录一下自己的思路和心得

1.导入jar包

2.加入配置文件

applicationContext.xml   springmvc-config.xml

2.1 web.xml

2.11 

配置Spring核心监听器，默认会以 /WEB-INF/applicationContext.xml作为配置文件

org.springframework.web.context.ContextLoaderListener

<listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class></listener><context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/applicationContext*.xml</param-value></context-param>

若要指定 applicationContext.xml文件的位置 可把<param-value>的值换成 classpath:applicationContext.xml
2.12

配置 springMVC前端控制器

  <servlet>    <servlet-name>springmvc</servlet-name>    <servlet-class>        org.springframework.web.servlet.DispatcherServlet    </servlet-class>    <init-param>      <param-name>contextConfigLocation</param-name>      <param-value>/WEB-INF/springmvc-config.xml</param-value>    </init-param>    <load-on-startup>1</load-on-startup>  </servlet>

控制器拦截所有请求

<servlet-mapping>    <servlet-name>springmvc</servlet-name>    <url-pattern>/</url-pattern>  </servlet-mapping>

2.13 可以加入 编码过滤器

 

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

3 applicationContext.xml

3.1 引入mapper类----->dao         

<mybatis:scan base-package="cn.xw.hrm.dao"/> 

3.2 把用到spring注解的类，加入扫描包，注册成 bean

<context:component-scan base-package="cn.xw.hrm"/>

3.3 加载数据源

<context:property-override location="classpath:db.properties"/>

3.3 用c3p0连接数据圆

<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"/>

3.4 配置sessionFactory

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"
   p:dataSource-ref="dataSource"/>

3.5 jdbc事务管理器

<bean id="transactionManager" 
class="org.springframework.jdbc.datasource.DataSourceTransactionManager"
p:dataSource-ref="dataSource"/>

3.6 用注解方式管理事物

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

4 Springmvc-config.xml

扫描controller

    <context:component-scan base-package="cn.xw.hrm.controller"/>    <!-- 设置默认配置方案 -->    <mvc:annotation-driven />    <!-- 使用默认的Servlet来响应静态文件 -->    <mvc:default-servlet-handler/>

<!--     定义Spring MVC的拦截器     -->    <mvc:interceptors>    <mvc:interceptor>    <mvc:mapping path="/*"/>     <bean class="cn.xw.hrm.interceptor.AuthorizedInterceptor"/>    </mvc:interceptor>    </mvc:interceptors>

5 实体类

User   ------> set get方法

6.Dao------>mapper

public interface  userDao (){}

6.1 动态 sql

@SelectProvider(type=UserSqlProvide.class,method="updateUser")
void update(User user);
6.2 创建  class UserSqlProvide 

public String updateUser(final User user){return new SQL(){{UPDATE("user_inf");if(user.getUsername() != null){SET(" username = #{username} ");}if(user.getLoginname() != null){SET(" loginname = #{loginname} ");}if(user.getPassword()!= null){SET(" password = #{password} ");}if(user.getStatus()!= null){SET(" status = #{status} ");}if(user.getCreateDate()!= null){SET(" create_date = #{createDate} ");}WHERE(" id = #{id} ");}}.toString();}

7     

  interface  UserService (){}

根据id 修改 user

@Service("hrmService")

void updateUser(User user)

7.2 class UserService implements UserService (){

//自动注入dao
@Autowired
private UserDao userDao;

public void updateUser(User user){

userDao.update(user);

}

}

8----> 控制器

@Controller

class  UserController(){

@Autowired
@Qualifier("userService")
private UserService userService;

@RequestMapping("/user/updateUser")
public ModelAndView updateUser(
@ModelAttribute User user,
ModelAndView mv){

User user = userService.updateUser(user);

mv.addObject("user",user);

mv.setViemName("/user/selectUser");

retuen mv;

｝

}