ssm框架搭建簡單demo+源碼

應某網絡友人邀約，需要一個SSM框架的Demo作為基礎學習資料，於是乎，就有了本文。一個從零開始的SSM框架Demo對一個新手來說，是非常重要的，可大大減少在學習過程中遇到的各種各樣的坑，說到最后，也算是助人為樂吧！下面我們從零開始進行SSM框架的搭建，在介紹最后，百度雲上提供有源碼以便需要Demo的親朋好友們進行下載~~~

環境配置

eclipse+tomcat

 

 

 

1*代碼結構圖示

2*配置文件

spring.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:tx="http://www.springframework.org/schema/tx" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
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/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd">

<!-- 1.掃描器 -->
<context:component-scan base-package="com.fykj"></context:component-scan>

<!-- 2.日期轉換器 -->
<!-- <bean id="formattingConversionServiceFactoryBean"
class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
<property name="converters">
<list>
<bean class="com.zy.converter.MyConverter"></bean>
</list>
</property>
</bean> -->

<!--3 引用轉換器 -->
<!-- <mvc:annotation-driven conversion-service="formattingConversionServiceFactoryBean"></mvc:annotation-driven> -->

<!-- 4.配置上傳文件解析器 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="maxUploadSize">
<value>10240000</value><!-- 最大上傳尺寸:102400B -->
</property>
</bean>

<!-- 5.將aop改成注解配置 -->
<!-- 打開代理 -->

<aop:aspectj-autoproxy proxy-target-class="true"></aop:aspectj-autoproxy>

<!-- 整合配置 -->
<!-- 1.mybatis配置連接池 -->
<bean name="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
<property name="driverClass" value="com.mysql.jdbc.Driver"></property>
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/db_test"></property>
<property name="user" value="root"></property>
<property name="password" value="root"></property>
<property name="maxPoolSize" value="10"></property>
<property name="minPoolSize" value="2"></property>
</bean>

<!-- 2.mybatis工廠 -->
<bean name="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource"></property>
<property name="configLocation" value="classPath:mybatis-config.xml"></property>
</bean>

<!-- 3.mybatis中的mapper掃描 mapper(動態代理加強版) 掃描 替換mybatis中的mapper掃描 -->
<bean name="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.fykj.mapper"></property>
</bean>

<!-- 4.配置事務管理 -->
<bean name="transactionManager"
class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<property name="dataSource" ref="dataSource"></property>
</bean>

<!-- 5.配置注解驅動 -->
<tx:annotation-driven transaction-manager="transactionManager" />

 

</beans>

　　

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>

</configuration>

3*主體代碼

UserController

package com.fykj.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import com.fykj.entity.User;
import com.fykj.service.UserService;

@Controller
@RequestMapping("/user")
public class UserController {

    @Autowired
    private UserService userService;

    @RequestMapping("/login")
    public String login(String username, String password, Model model) throws Exception {
        
        User user = userService.checkLogin(username, password);

        if (user != null) {

            model.addAttribute(user);

            return "/welcome.jsp";
        }

        return "/fail.jsp";
    }
}

entity

package com.fykj.entity;

public class User {

    private int id;
    private String username;
    private String password;

    public int getId() {
        return id;
    }

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

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

}

Service

user service

---

package com.fykj.service;

import com.fykj.entity.User;

public interface UserService {

    public User checkLogin(String username, String password);


}

---

user service impl

---

package com.fykj.service;

import javax.annotation.Resource;

import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import com.fykj.entity.User;
import com.fykj.mapper.UserMapper;
import com.fykj.service.UserService;

//@Service("userService")
//@Service
//@Transactional
@Component
public class UserServiceImpl implements UserService {
    @Resource
    public UserMapper userMapper;

    public User checkLogin(String username, String password) {

        User user = userMapper.getUserByName(username);

        if (user != null && user.getPassword().equals(password)) {

            return user;
        }
        return null;
    }

}

mapper

user mapper

---

package com.fykj.mapper;

import com.fykj.entity.User;

public interface UserMapper {

    public User getUserByName(String username);
}

---

user mapper xml

---

<?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.fykj.mapper.UserMapper">

    <!-- <resultMap type="com.fykj.entity.User" id="userMap"> -->
    <!-- <id property="id" column="id" /> -->
    <!-- <result property="username" column="username" /> -->
    <!-- <result property="password" column="password" /> -->
    <!-- </resultMap> -->

    <select id="getUserByName" parameterType="String" resultType="com.fykj.entity.User">

        select * from
        db_user WHERE username=#{username}

    </select>

</mapper>

源碼下載地址:https://pan.baidu.com/s/1kVTKrJp