SSM整合

SSH：Struts2+Spring+Hibernate

SSM：SpringMVC+Spring+MyBatis

共同点：

    1.Spring依赖注入DI来管理各层的组件。

    2.使用面向切面编程AOP管理事物、日志、权限等。

不同点：

    1.Struts2 和 SpringMVC 控制器(controller)控制视图和模型的交互机制的不同，

    2.Struts2是Action类级别，SpringMVC是方法级别，更容易实现RESTful风格。

　3.Hibernate主要是在java代码中写HQL代码，MyBatis主要是要XML文件中配置SQL代码

 虽然说SSM比SSH要先进，但是在SpringBoot面前，都是渣渣

下面来讲SSM的整合

工程结构

pom.xml

<?xml version="1.0" encoding="UTF-8"?>

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0modelVersion>

  <groupId>com.jinkgroupId>
  <artifactId>SSMartifactId>
  <version>1.0-SNAPSHOTversion>
  <packaging>warpackaging>

  <name>SSM Maven Webappname>
  
  <url>http://www.example.comurl>

  <properties>
    <project.build.sourceEncoding>UTF-8project.build.sourceEncoding>
    <maven.compiler.source>1.8maven.compiler.source>
    <maven.compiler.target>1.8maven.compiler.target>
    <spring.version>5.0.2.RELEASEspring.version>
    <slf4j.version>1.6.6slf4j.version>
    <log4j.version>1.2.12log4j.version>
    <mysql.version>5.1.6mysql.version>
    <mybatis.version>3.4.5mybatis.version>
  properties>

  <dependencies>
    <dependency>
      <groupId>org.aspectjgroupId>
      <artifactId>aspectjweaverartifactId>
      <version>1.6.8version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-aopartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-contextartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-webmvcartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-testartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-txartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>org.springframeworkgroupId>
      <artifactId>spring-jdbcartifactId>
      <version>${spring.version}version>
    dependency>

    <dependency>
      <groupId>junitgroupId>
      <artifactId>junitartifactId>
      <version>4.12version>
      <scope>compilescope>
    dependency>

    <dependency>
      <groupId>mysqlgroupId>
      <artifactId>mysql-connector-javaartifactId>
      <version>${mysql.version}version>
    dependency>

    <dependency>
      <groupId>javax.servletgroupId>
      <artifactId>servlet-apiartifactId>
      <version>2.5version>
      <scope>providedscope>
    dependency>

    <dependency>
      <groupId>javax.servlet.jspgroupId>
      <artifactId>jsp-apiartifactId>
      <version>2.0version>
      <scope>providedscope>
    dependency>

    <dependency>
      <groupId>jstlgroupId>
      <artifactId>jstlartifactId>
      <version>1.2version>
    dependency>

    <dependency>
      <groupId>log4jgroupId>
      <artifactId>log4jartifactId>
      <version>${log4j.version}version>
    dependency>

    <dependency>
      <groupId>org.slf4jgroupId>
      <artifactId>slf4j-apiartifactId>
      <version>${slf4j.version}version>
    dependency>

    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatisartifactId>
      <version>${mybatis.version}version>
    dependency>

    <dependency>
      <groupId>org.mybatisgroupId>
      <artifactId>mybatis-springartifactId>
      <version>1.3.0version>
    dependency>

    <dependency>
      <groupId>c3p0groupId>
      <artifactId>c3p0artifactId>
      <version>0.9.1.2version>
      <type>jartype>
      <scope>compilescope>
    dependency>
    <dependency>
      <groupId>org.junit.jupitergroupId>
      <artifactId>junit-jupiter-apiartifactId>
      <version>5.3.2version>
      <scope>compilescope>
    dependency>
  dependencies>

  <build>
    <finalName>SSMfinalName>
    <pluginManagement>
      <plugins>
        <plugin>
          <artifactId>maven-clean-pluginartifactId>
          <version>3.1.0version>
        plugin>
        
        <plugin>
          <artifactId>maven-resources-pluginartifactId>
          <version>3.0.2version>
        plugin>
        <plugin>
          <artifactId>maven-compiler-pluginartifactId>
          <version>3.8.0version>
        plugin>
        <plugin>
          <artifactId>maven-surefire-pluginartifactId>
          <version>2.22.1version>
        plugin>
        <plugin>
          <artifactId>maven-war-pluginartifactId>
          <version>3.2.2version>
        plugin>
        <plugin>
          <artifactId>maven-install-pluginartifactId>
          <version>2.5.2version>
        plugin>
        <plugin>
          <artifactId>maven-deploy-pluginartifactId>
          <version>2.8.2version>
        plugin>
      plugins>
    pluginManagement>
  build>
project>

index.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
<a href="account/findAll">测试a>
body>
html>

web.xml

DOCTYPE web-app PUBLIC
 "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
 "http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
  <display-name>Archetype Created Web Applicationdisplay-name>

  
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListenerlistener-class>
  listener>
  
  <context-param>
    <param-name>contextConfigLocationparam-name>
    <param-value>classpath:applicationContext.xmlparam-value>
  context-param>

  
  <servlet>
    <servlet-name>dispatcherServletservlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
    
    <init-param>
      <param-name>contextConfigLocationparam-name>
      <param-value>classpath:springmvc.xmlparam-value>
    init-param>
    <load-on-startup>1load-on-startup>
  servlet>
  <servlet-mapping>
    <servlet-name>dispatcherServletservlet-name>
    <url-pattern>/url-pattern>
  servlet-mapping>

  
  <filter>
    <filter-name>characterEncodingFilterfilter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
    <init-param>
      <param-name>encodingparam-name>
      <param-value>UTF-8param-value>
    init-param>
  filter>
  <filter-mapping>
    <filter-name>characterEncodingFilterfilter-name>
    <url-pattern>/url-pattern>
  filter-mapping>
web-app>

list.jsp

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Titletitle>
head>
<body>

<h3>查询所有的账户信息h3>
body>
html>

springmvc.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:mvc="http://www.springframework.org/schema/mvc"
       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/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.jinke">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    context:component-scan>

    
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/pages/"/>
        <property name="suffix" value=".jsp"/>
    bean>

    
    <mvc:resources mapping="/css/**" location="/css/"/>
    <mvc:resources mapping="/images/**" location="/images/"/>
    <mvc:resources mapping="/js/**" location="/js/"/>

    
    <mvc:annotation-driven/>

beans>

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.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">

    
    <context:component-scan base-package="com.jinke">
        
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    context:component-scan>

    
    
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver"/>
        <property name="jdbcUrl" value="jdbc:mysql:///ssm"/>
        <property name="user" value="root"/>
        <property name="password" value="1234"/>
    bean>

    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
    bean>

    
    <bean id="mapperScannerConfigurer" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.jinke.dao"/>
    bean>

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

    
    <tx:advice id="txAdvice" transaction-manager="dataSourceTransactionManager">
        <tx:attributes>
            <tx:method name="find*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        tx:attributes>
    tx:advice>

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

beans>

下面是java代码

package com.jinke.controller;

import com.jinke.domain.Account;
import com.jinke.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;

import java.util.List;

@Controller
@RequestMapping("/account")
public class AccountController {

    @Autowired
    private AccountService accountService;

    @RequestMapping("/findAll")
    public String findAll() {
        System.out.println("web : findall");
        //调用service的方法
        List list = accountService.findAll();
        for (Account account : list) {
            System.out.println(account);
        }
        return "list";
    }

}

package com.jinke.dao;

import com.jinke.domain.Account;
import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface AccountDao {


    @Select("select * from account")
    public List findAll();

    @Insert("insert into account (name,money) values (#{name},#{money})")
    public void saveAccount(Account account);
}

package com.jinke.domain;

import java.io.Serializable;

public class Account implements Serializable {

    private Integer id;
    private String name;
    private Double mondy;

    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 getMondy() {
        return mondy;
    }

    public void setMondy(Double mondy) {
        this.mondy = mondy;
    }

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

package com.jinke.service.impl;

import com.jinke.dao.AccountDao;
import com.jinke.domain.Account;
import com.jinke.service.AccountService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class AccountServiceImpl implements AccountService {

    @Autowired
    private AccountDao accountDao;

    @Override
    public List findAll() {
        System.out.println("service :findall");
        return accountDao.findAll();
    }

    @Override
    public void saveAccount(Account account) {
        System.out.println("业务层：保存账户。。。");
        accountDao.saveAccount(account);
    }
}

package com.jinke.service;

import com.jinke.domain.Account;

import java.util.List;

public interface AccountService {

    public List findAll();

    public void saveAccount(Account account);
}

SSH和SSM的整合都需要进行大量的配置，SpringBoot则解决了这个问题，原理就是约束大于配置，敬请期待

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