欢迎您访问程序员文章站本站旨在为大家提供分享程序员计算机编程知识!
您现在的位置是: 首页

SSM框架整合配置案例

程序员文章站 2024-01-15 22:13:06
...

一、SSM

1.SpringMVC
它用于web层,相当于controller(等价于传统的servlet和struts的action),用来处理用户请求。

2.Spring
IOC容器,它可以装载bean,创建对象

3.Mybatis
操作数据库

二、配置案例

1.导入jar包

SSM框架整合配置案例

2.配置web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    <!-- 指定spring配置文件 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>classpath:beans.xml</param-value>
    </context-param>
    <!-- 监听器 初始化spring的配置文件 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>
    <!-- 配置servlet请求分发器,用来处理请求,找到对应的controller处理请求 -->
    <servlet>
        <!-- 默认springmvc配置文件在WEB-INF下,<servlet-name>+servlet.xml -->
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置contextConfigLocation,指定springmvc配置文件位置 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
    </servlet>
    <servlet-mapping>
        <servlet-name>springmvc</servlet-name>
        <url-pattern>*.do</url-pattern>
    </servlet-mapping>

    <!-- 处理请求编码,默认只对post有效 -->
    <filter>
        <filter-name>encoding</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>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>
</web-app>

3.spring配置文件

src下beans.xml(web.xml文件中指定)

<?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: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.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd
        http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- bean definitions here -->
    <!-- 导入数据库配置信息 -->
    <context:property-placeholder location="classpath:JDBC.properties" />
    <!-- 扫描service,dao层 -->
    <context:component-scan base-package="cn.wang.*"></context:component-scan>
    <!-- dataSource -->
    <bean id="dataSource"
        class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="${driverClassName}"></property>
        <property name="url" value="${url}"></property>
        <property name="username" value="${username}"></property>
        <property name="password" value="${password}"></property>
    </bean>
    <!-- sessionFactory -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- dataSource -->
        <property name="dataSource" ref="dataSource"></property>
    </bean>
    <!-- spring-mybatis整合注入mapper映射文件 -->
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 指定要扫描的包 -->
        <property name="basePackage" value="cn.wang.dao"></property>
        <!-- sqlSessionFactory ,使用sqlSessionFactoryBeanName属性注入 -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
    </bean>
    <!-- 事务 -->
    <!-- 声明注解事务 -->
    <tx:annotation-driven transaction-manager="transcationManager" />
    <!-- 事务管理器 -->
    <bean id="transcationManager"
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <!-- dataSource -->
        <property name="dataSource" ref="dataSource"></property>
    </bean>

</beans>

4.springmvc配置文件

src下springmvc.xml(web.xml中指定)

<?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:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
        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-3.1.xsd">
<!-- spring mvc注解支持 -->
<mvc:annotation-driven></mvc:annotation-driven>
<!-- spring创建bean 基包扫描 -->
<context:component-scan base-package="cn.wang.controller"></context:component-scan>
<!-- 创建 一个controller bean对象 -->
<!-- 
<bean name="/login.do" class="cn.wang.controller.UserController"></bean>
 -->
 <!-- 内部资源视图解析器 -->
<!-- <bean id="irc" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    前缀 
    <property name="prefix" value="/WEB-INF/"></property>
    后缀 
    <property name="suffix" value=".jsp"></property>
</bean> -->
</beans>

5.数据库配置信息

src下JDBC.properties(beans.xml中导入)
SSM框架整合配置案例

6.实体类User

SSM框架整合配置案例

7.dao层

(1)接口IUserDao

package cn.wang.dao;

import java.io.Serializable;
import java.util.List;

import org.springframework.stereotype.Repository;

import cn.wang.domain.User;

/**
 * User Dao层
 * @author wangchao
 * 接口下没有实现类,有Mapper.xml
 * 当前对象就是dao层对象
 */
@Repository
public interface IUserDao {

    List<User> findAll();

    User findByUsername(String username);

    User findById(Serializable id);

    void add(User user);

    void deleteById(Serializable id);

    void updata(User user);

}

(2)IUserDao.xml(对应mapper)

<?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="cn.wang.dao.IUserDao">
    <select id="findByUsername" resultType="cn.wang.domain.User">
        select * from tbl_user where uname=#{username}
    </select>   

    //... ...

</mapper>

8.service层

(1)接口IUserService

import java.io.Serializable;
import java.util.List;

import cn.wang.domain.User;

public interface IUserService {
    List<User> findAll();

    User findByUsername(String username);

    User findById(Serializable id);

    void add(User user);

    void deleteById(Serializable id);

    void updata(User user);
}

(2)接口实现类UserServiceImpl
SSM框架整合配置案例

9.Controller层

@Controller
//父路径
@RequestMapping("/user")
public class UserController {
    @Autowired
    private IUserService userService;
    @RequestMapping(value = "/login", method = RequestMethod.POST)
    public String login1(User user, Model model) {
        System.out.println(user);
        User login = userService.findByUsername(user.getUname());
        if (login != null && user.getUpsw().equals(login.getUpsw())) {
            model.addAttribute("user", login);
            return "/WEB-INF/welcome.jsp";
        } else {
            // 错误信息
            model.addAttribute("errMsg", "用户名密码错");
            return "/index.jsp";
        }
    }
}

10.前台页面

(1)/index.jsp
SSM框架整合配置案例
(2)/WEB-INF/weclome.jsp
SSM框架整合配置案例

相关标签: ssm 框架