SSM整合

整合SSM框架：

目录结构：


创建maven项目，补全目录结构，添加依赖：

    <!--Jar包版本控制-->
    <properties>
        <spring.version>5.0.2.RELEASE</spring.version>
        <slf4j.version>1.6.6</slf4j.version>
        <log4j.version>1.2.12</log4j.version>
        <mysql.version>5.1.6</mysql.version>
        <mybatis.version>3.4.5</mybatis.version>
    </properties>

    <dependencies>

        <!-- spring -->
        <dependency>
            <groupId>org.aspectj</groupId>
            <artifactId>aspectjweaver</artifactId>
            <version>1.6.8</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aop</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.12</version>
            <scope>compile</scope>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>${mysql.version}</version>
        </dependency>

        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <version>2.5</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>javax.servlet.jsp</groupId>
            <artifactId>jsp-api</artifactId>
            <version>2.0</version>
            <scope>provided</scope>
        </dependency>

        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

        <!-- log start -->
        <dependency>
            <groupId>log4j</groupId>
            <artifactId>log4j</artifactId>
            <version>${log4j.version}</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-api</artifactId>
            <version>${slf4j.version}</version>
        </dependency>

        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>${slf4j.version}</version>
        </dependency>
        <!-- log end -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
            <version>${mybatis.version}</version>
        </dependency>

        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
            <version>1.3.0</version>
        </dependency>

        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
            <type>jar</type>
            <scope>compile</scope>
        </dependency>

    </dependencies>

    <build>
        <pluginManagement>
            <plugins>
                <plugin>
                    <groupId>org.apache.maven.plugins</groupId>
                    <artifactId>maven-compiler-plugin</artifactId>
                    <version>3.2</version>
                    <configuration>
                        <source>1.8</source>
                        <target>1.8</target>
                        <encoding>UTF-8</encoding>
                        <showWarnings>true</showWarnings>
                    </configuration>
                </plugin>
            </plugins>
        </pluginManagement>

            <!--扫描Dao层的xml文件，不配置的话需要在resoureces文件夹中建对应的文件夹 -->
            <resources>
                <resource>
                    <directory>src/main/java</directory>
                    <includes>
                        <include>**/*.xml
                    
                
            
    

配置 web.xml：

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">

    <!-- 配置前端控制器：服务器启动必须加载，需要加载springmvc.xml配置文件 -->
    <servlet>
        <servlet-name>dispatcherServlet</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <!-- 配置初始化参数，创建完DispatcherServlet对象，加载springmvc.xml配置文件 -->
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:springmvc.xml</param-value>
        </init-param>
        <!-- 服务器启动的时候，让DispatcherServlet对象创建 -->
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcherServlet</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <!--字符编码过滤器-->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>

        <!--指定字符编码-->
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>

        <!--强制指定字符编码，即如果在request中指定了字符编码，那么也会为其强制指定当前设置的字符编码-->
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*
    

    
    
        org.springframework.web.context.ContextLoaderListener
    
    
    
        contextConfigLocation
        classpath:applicationContext.xml
    

添加相关的配置文件：

db.properties：

jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/ssm?useSSL=false
jdbc.user=root
jdbc.password=1997

log4j.properties：

# Set root category priority to INFO and its only appender to CONSOLE.
#log4j.rootCategory=INFO, CONSOLE            debug   info   warn error fatal
log4j.rootCategory=info, CONSOLE, LOGFILE

# Set the enterprise logger category to FATAL and its only appender to CONSOLE.
log4j.logger.org.apache.axis.enterprise=FATAL, CONSOLE

# CONSOLE is set to be a ConsoleAppender using a PatternLayout.
log4j.appender.CONSOLE=org.apache.log4j.ConsoleAppender
log4j.appender.CONSOLE.layout=org.apache.log4j.PatternLayout
log4j.appender.CONSOLE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

# LOGFILE is set to be a File appender using a PatternLayout.
log4j.appender.LOGFILE=org.apache.log4j.FileAppender
log4j.appender.LOGFILE.File=d:\axis.log
log4j.appender.LOGFILE.Append=true
log4j.appender.LOGFILE.layout=org.apache.log4j.PatternLayout
log4j.appender.LOGFILE.layout.ConversionPattern=%d{ISO8601} %-6r [%15.15t] %-5p %30.30c %x - %m\n

添加springmvc.xml配置文件：

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

    <!-- 扫描controller的注解，别的不扫描 -->
    <context:component-scan base-package="com.lsh">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!-- 配置视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- JSP文件所在的目录 -->
        <property name="prefix" value="/WEB-INF/pages/" />
        <!-- 文件的后缀名 -->
        <property name="suffix" value=".jsp" />
    </bean>

    <!-- 设置静态资源不过滤 -->
    <mvc:resources location="/css/" mapping="/css/**" />
    <mvc:resources location="/images/" mapping="/images/**" />
    <mvc:resources location="/js/" mapping="/js/**" />

    <!-- 开启对SpringMVC注解的支持 -->
    <mvc:annotation-driven />

</beans>

添加applicationContext.xml配置文件：

添加实体类Account：

package com.lsh.domain;

import java.io.Serializable;

public class Account implements Serializable {

    private Integer id;
    private String name;
    private Double 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;
    }

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

编写Dao层：

添加接口AccountDao：

package com.lsh.dao;

import com.lsh.domain.Account;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface AccountDao {
    public void saveAccount(Account account);

    public List<Account> findAll();

    public Account findOne(int id);
}

添加接口的配置文件AccountDao.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.lsh.dao.AccountDao">

	<!--<resultMap id="listMap" type="com.lsh.domain.Account" >-->
	<!--    <id column="id" property="id"  />-->
	<!--    <result column="name" property="name" />-->
	<!--    <result column="money" property="money" />-->
	<!--</resultMap>-->

    <insert id="saveAccount">
        insert into account (name,money) values (#{name},#{money})
    </insert>

    <select id="findAll" resultType="com.lsh.domain.Account">
       select * from account
    </select>

    <select id="findOne" resultType="com.lsh.domain.Account">
        select * from account where id = #{id}
    </select>

</mapper>

编写Controller层：
添加AccountController类：

package com.lsh.controller;

import com.lsh.domain.Account;
import com.lsh.service.AccountService;
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 java.util.List;

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

    @Autowired
    private AccountService accoutService;
    /**
     * 查询所有的数据
     * @return
     */
    @RequestMapping("/findAll")
    public String findAll(Model model) {
        System.out.println("表现层：查询所有账户...");
        List<Account> list = accoutService.findAll();
        model.addAttribute("list",list);
        for (Account account : list) {
            System.out.println(account);
        }
        return "list";
    }

    @RequestMapping("/findOne")
    public String findOne(Model model,int id) {
        System.out.println("表现层：查询所有账户...");
        Account acc = accoutService.findOne(id);
        model.addAttribute("One",acc);

        return "One";
    }

}

编写Service层：
添加AccountService接口：

package com.lsh.service;

import com.lsh.domain.Account;

import java.util.List;

public interface AccountService {

    public void saveAccount(Account account);

    public List<Account> findAll();

    public Account findOne(int id);
}

添加接口的实现类AccountServiceImpl：

package com.lsh.service;

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

import java.util.List;

@Service("accountService")
public class AccountServiceImpl implements AccountService {
    @Autowired
    private AccountDao accountDao;


    public void saveAccount(Account account) {

    }

    public List<Account> findAll() {

        System.out.println("业务层：查询所有账户...");

        return accountDao.findAll();

    }

    @Override
    public Account findOne(int id) {
        return accountDao.findOne(id);
    }

}

编写登录界面index.jsp：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
        <a href="account/findAll">查询所有a>
        <br>
        <a href="account/findOne">查询一个a>
        <br>
        <form action="account/findOne" method="get">
            <input type="text" name="id" />
            <input type="submit" value="提交" />
        form>
body>
html>

返回网页one.jsp：

<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Titletitle>
head>
<body>
        ${One.name}
body>
html>