ssm框架整合

创建数据库

create database ssm;
create table account(
id int primary key auto_increment,
name varchar(100),
money double(7,2)
);

创建好是这样的

里面的数据是后来加的

创建Maven工程

编写实体类

package com.tong.domain;

public class Account {

    private Integer id;
    private String name;
    private Double money;

    @Override
    public String toString() {
        return "Account{" +
                "id=" + id +
                ", name='" + name + '\'' +
                ", money=" + money +
                '}';
    }

    public Integer getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Double getMoney() {
        return money;
    }

    public void setMoney(Double money) {
        this.money = money;
    }

}

编写mapper

mapper是实现最底层功能的类
mapper是提供给service来使用的,通过mapper的基础方法service通过使用基础方法得到一些高级的方法来让controller使用
controller是直接与页面交互的 controller通过使用service里面的方法来实现具体的功能

这里mapper里面是接口是因为我们可以通过mybaits来自动实现实现类

package com.tong.mapper;

import com.tong.domain.Account;

import java.util.List;

public interface AccountMapper {
    public void save(Account account);
    public List<Account> findAll();

}

编写service

这次实现的方法比较简单所有没有实现额外的功能
接口在这

package com.tong.service;

import com.tong.domain.Account;

import java.util.List;

public interface AccountService {
    public void save(Account account );
    public List<Account> findAll();

}

实现在这

package com.tong.service.impl;

import com.tong.domain.Account;
import com.tong.mapper.AccountMapper;
import com.tong.service.AccountService;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
@Service("accountService")
public class AccountServiceImpl implements AccountService {


    @Autowired
    private AccountMapper accountMapper;
	 通过 在spring容器中找到AccountMapper类来注入到这里面
    @Override
    public void save(Account account) {
        accountMapper.save(account);
    }

    @Override
    public List<Account> findAll() {
        return accountMapper.findAll();
        }
 }

与页面交互的Controller

package com.tong.controller;

import com.tong.domain.Account;
import com.tong.service.AccountService;
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.ResponseBody;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
这个注解表明了这个是Controller
@RequestMapping("/account")
这个表示这个下面的方法访问的地址前都要加上/account
public class AccountController {
    @Autowired
    默认按byType自动装配
    public AccountService accountService;


    @RequestMapping(value = "/save",produces = "text/html;charset=UTF-8")
     这个方法访问是 根目录+/account/save
    @ResponseBody
    不返回地址
    public String save(Account account){
        System.out.println(account.toString());

        accountService.save(account);
		调用service里面的方法完成功能
        return  "保存成功了";
    }
    @RequestMapping("/findAll")
    public ModelAndView findAll(){
        List<Account> all = accountService.findAll();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("accountList",all);
        modelAndView.setViewName("accountList");
        
		modelAndView里面model是封装数据 view是跳转到那个页面
		
        return modelAndView;
    }



}

sql语句配置文件

DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.tong.mapper.AccountMapper">
		这很重要 这确定了我们写的sql语句是要用来实现那个接口位置不能写错

    <insert id="save" parameterType="account">
        insert into account values(#{id},#{name},#{money})
    insert>
    <select id="findAll" resultType="account">
        select * from account
    select>
mapper>

spring 配置文件

<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">



    
    <context:component-scan base-package="com.tong">
        
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller">context:exclude-filter>
        我们要排除controller是因为controller是直接与页面交互的
        controller要被springMVC扫描
    context:component-scan>

    
    <context:property-placeholder location="classpath:jdbc.properties">context:property-placeholder>

    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}">property>
        <property name="jdbcUrl" value="${jdbc.url}">property>
        <property name="user" value="${jdbc.username}">property>
        <property name="password" value="${jdbc.password}">property>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource">property>
        
        通过mybatis得到接口的实现类
        <property name="configLocation" value="classpath:sqlMapConfig-spring.xml">property>
    bean>



    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.tong.mapper">property>

    bean>


    
    
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource">property>
    bean>

    
    <tx:advice id="txAdvice">
        <tx:attributes>
            <tx:method name="*"/>
        tx:attributes>
    tx:advice>

    
    <aop:config>
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.tong.service.impl.*.*(..))">aop:advisor>
    aop:config>


beans>

spring-mvc配置文件

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">


<context:component-scan base-package="com.tong.controller">context:component-scan>

    <mvc:annotation-driven>mvc:annotation-driven>


    <bean id="resourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/pages/">property>
        
        <property name="suffix" value=".jsp">property>


    bean>


    <mvc:default-servlet-handler>mvc:default-servlet-handler>



beans>

mybaits配置文件

DOCTYPE configuration
        PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>

<typeAliases>





    <package name="com.tong.domain"/>
typeAliases>
    <mappers>
                <mapper resource="com.tong.mapper/AccountMapper.xml"/>
                这是加载映射文件 这个文件就是之前编写sql语句的xml配置文件
                这样mybaits就能自动生成实现类了

    mappers>

configuration>

web页面

save页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
    <h1>添加账户信息表单h1>
    <form name="accountForm" action="${pageContext.request.contextPath}/account/save" method="post">
        账户名称:<input type="text" name="name"><br>
        账户金额:<input type="text" name="money"><br>
        <input type="submit" value="保存"><br>
    form>
body>
html>

accountList页面

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
    <h1>展示账户数据列表h1>
    <table border="1">
        <tr>
            <th>账户idth>
            <th>账户名称th>
            <th>账户金额th>
        tr>

        <c:forEach items="${accountList}" var="account">
            <tr>
                <td>${account.id}td>
                <td>${account.name}td>
                <td>${account.money}td>
            tr>
        c:forEach>

    table>
body>
html>