SSM框架实现项目的增删改查+分页+分布式

1.先在idea中新建一个项目，File->new->project。选Maven,注意要选jdk1.8，点Next.
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2.k这里地Group,Artifactld自己填,点Next.

3.点finish。

4.ssm_parent1作为父类，不写任何东西，然后需要在ssm_parent1下面创建四个Module：ssm_bean,ssm_service,ssm_dao,ssm_web。
然后在每个Module的java下面创建包、类、接口什么的，需要说的是，ssm_web下面可能最初没有java和resources，需要自己建Directory，然后右击，找到Mark Directory as，分别选Source Root，Resources Root。
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建的Packge、Directory、File之类的直接上图：

6.userInfo:

package com.zhongruan.bean;

public class UserInfo {
    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;
    }

    @Override
    public String toString() {
        return "UserInfo{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }
}

IUserDao:

package com.zhongruan.dao;
import com.zhongruan.bean.UserInfo;

import java.util.List;

public interface IUserDao {
    public UserInfo doLogin(UserInfo userInfo);
    public List<UserInfo> findAll();
    public  void delete(int id);
    public  void update(UserInfo userInfo);
    public void insert(UserInfo userInfo);
    public UserInfo findId(int id);

}

usermapper.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.zhongruan.dao.IUserDao" >
    <select id="doLogin" parameterType="com.zhongruan.bean.UserInfo"
            resultType="com.zhongruan.bean.UserInfo">
        select * from userinfo where username=#{username} and password=#{password}
    </select>

    <select id="findAll" resultType="com.zhongruan.bean.UserInfo">
        select * from userinfo
    </select>

    <insert id="insert" parameterType="com.zhongruan.bean.UserInfo">
        insert into userinfo values (#{id},#{username},#{password})
    </insert>

    <delete id="delete" parameterType="java.lang.Integer">
        delete from userinfo where id =#{id}
    </delete>

    <update id="update" parameterType="com.zhongruan.bean.UserInfo">
        update userinfo set username=#{username},password=#{password} where id=#{id}
    </update>

    <select id="findId" parameterType="java.lang.Integer" resultType="com.zhongruan.bean.UserInfo">
        select * from userinfo where id=#{id}
    </select>

</mapper>

UserService:

package com.zhongruan.service.impl;
import com.github.pagehelper.PageHelper;
import com.zhongruan.bean.UserInfo;
import com.zhongruan.dao.IUserDao;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.stereotype.Service;
import java.util.List;

@Service
public class UserService implements IUserService {
    @Autowired
    private IUserDao userDao;
    private int page;
    private int size;

    @Override
    public boolean doLogin(UserInfo userInfo) {
        UserInfo userInfo1 = userDao.doLogin(userInfo);
        if (null != userInfo1) {
            return true;
        } else {
            return false;
        }
    }

    @Override
    public List<UserInfo> findAll(int page,int size) {
        PageHelper.startPage(page,size);
        return userDao.findAll();
    }

    @Override
    public void delete(int id) {
        userDao.delete(id);
    }
   @Override
    public void insert(UserInfo userInfo) {
        userDao.insert(userInfo);
    }
    @Override
    public void update(UserInfo userInfo) {
        userDao.update(userInfo);
    }
    @Override
    public UserInfo findId(int id) {
        return userDao.findId(id);

    }
}

IUserService:

package com.zhongruan.service;

import com.zhongruan.bean.UserInfo;

import javax.xml.registry.infomodel.User;
import java.util.List;

public interface IUserService {
    public boolean doLogin(UserInfo userInfo);

    public List<UserInfo> findAll(int page,int size);

    public void update(UserInfo userinfo);

    public UserInfo findId(int id);

    public void delete(int id);

    public void insert(UserInfo userInfo);
}

UserController:

package com.zhongruan.controller;

import com.github.pagehelper.PageInfo;
import com.zhongruan.bean.UserInfo;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
@RequestMapping("/user")
public class UserController {
    @Autowired
    private IUserService userService;
    private int page;
    private int size;

    @RequestMapping("/login.do")
    public ModelAndView login(UserInfo userInfo){
        ModelAndView mv=new ModelAndView();
        boolean flag=userService.doLogin(userInfo);
        if(flag){
            mv.setViewName("main");
        }else{
            mv.setViewName("../failer");
        }
        return mv;
    }
    @RequestMapping("/findAll.do")
    public ModelAndView findAll(int page,int size)
    {
        List<UserInfo> all=userService.findAll(page,size);
        ModelAndView mv=new ModelAndView();
        PageInfo<UserInfo> pageInfos=new PageInfo<>(all);
        mv.addObject("pageInfo",pageInfos);
        mv.setViewName("user-list");
        return mv;
    }

    @RequestMapping("/save.do")
    public ModelAndView save(UserInfo userinfo) {
        userService.insert(userinfo);
        ModelAndView mv = new ModelAndView();
        mv = findAll(1,5);
        return mv;
    }

    @RequestMapping("/delete.do")
    public ModelAndView delete(int id) {
        userService.delete(id);
        ModelAndView mv=new ModelAndView();
        mv=findAll(1,5);
        return mv;

    }
    @RequestMapping("/toUpdate.do")
    public ModelAndView toUpdate(int id) {
        UserInfo userinfo = userService.findId(id);
        ModelAndView mv = new ModelAndView();
        mv.addObject("user",userinfo);
        mv.setViewName("user-update");
        return mv;

    }

    @RequestMapping("/update.do")
    public ModelAndView update(UserInfo userinfo) {
        userService.update(userinfo);
        ModelAndView mv = new ModelAndView();
        mv = findAll(1,5);
        return mv;
    }


}

applicationContext.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:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
		http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
		http://www.springframework.org/schema/context
		http://www.springframework.org/schema/context/spring-context-4.3.xsd
		http://www.springframework.org/schema/aop
		http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
		http://www.springframework.org/schema/tx
		http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
    <!-- 1.配置数据库相关参数properties的属性：${url} -->
    <context:property-placeholder location="classpath:db.properties"/>

    <!-- 2.配置数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="2"/>
    </bean>

    <!-- 3.配置SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 扫描bean包 使用别名 -->
        <property name="typeAliasesPackage" value="com.zhongruan.bean"></property>

        <!--配置加载映射文件 UserMapper.xml-->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
        <property name="plugins">
            <array>
                <bean class="com.github.pagehelper.PageInterceptor">
                    <property name="properties">
                        <props>
                            <prop key="helperDialect">mysql</prop>
                            <prop key="resonable">true</prop>
                        </props>
                    </property>
                </bean>
            </array>
        </property>


    </bean>

    <!-- 自动生成dao,mapper-->
    <!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="com.zhongruan.dao"/>
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>



    <!--自动扫描-->
    <context:component-scan base-package="com.zhongruan"/>


    <!-- 配置事务-->
    <!-- 5.配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 6.开启事务注解-->
    <tx:annotation-driven></tx:annotation-driven>

</beans>

db.properties：

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/mysql?useSSL=true&characterEncoding=utf-8
jdbc.username=root
jdbc.password=123456

log4j.properties:

# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

spring-mvc.xml：


# Global logging configuration
log4j.rootLogger=DEBUG, stdout
# Console output...
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n

<?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"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context-4.3.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/tx
      http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!-- 1.注解扫描位置-->
    <context:component-scan base-package="com.zhongruan.controller" />

    <!-- 2.配置映射处理和适配器-->
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>

    <!-- 3.视图的解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/pages/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

运行结果：
在这里插入图片描述

SSM框架实现项目的增删改查+分页+分布式

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