0028ssm环境搭建（springmvc+spring+mybatis）

spring整合springmvc和mybatis主要分为如下几个步骤：

1、spring环境搭建

2、springmvc环境搭建

3、spring整合springmvc

4、spring整合mybatis

具体如下：

先把最基本的会用到的内容创建出来

a、创建maven项目的过程（可参考之前创建springmvc项目的过程）

b、pom.xml中引入spring、springmvc、mybatis、jdbc、mysql、jstl等一系列相关jar包

c、创建controller类、service接口和实现类、dao接口、domain实体、数据库表（如果只是搭建spring环境，只需service即可，为了后面方便，此处统一建了）

1、spring环境搭建

spring环境搭建好的一个标志就是将service交给容器管理

a、applicationContext.xml中开启注解扫描，并排除扫描controller，因为controller是要交给springmvc管理的

b、service上加注解，交给容器管理，并可以给servcie起名字

c、编写测试类EmpTest中的run1()方法测试spring环境是否搭建好

2、springmvc环境搭建

springmvc环境搭建好的一个标志就是页面发送请求能够正常访问到controller中的方法

a、web.xml中配置前端控制器和中文乱码的过滤器

b、resources下创建springmvc.xml，并改约束xmlns

　　1、开启注解扫描，只扫描controller

　　2、配置视图解析器

　　3、过滤静态资源-->webapp下建立相应目录

　　4、开启springmvc注解的支持

c、创建index.jsp-->写<a>标签访问controller的方法

d、controller上加@Controller注解交给容器管理，并写对应的查询方法，返回"list"字符串

e、在/WEB-INF/pages下建立list.jsp

f、部署项目并启动，进行简单测试

3、spring整合springmvc

整合成功的一个标志是controller能够调用到service中的方法

a、web.xml中配置监听器ContextLoaderListener和上下文初始话参数context-param，

　　用监听器监听容器启动的时候加载上下文参数中配置的spring配置文件

b、controller中注入service

c、重新启动项目进行测试

4、spring整合mybatis

spring整合mybatis成功的标志是service能够调用到dao对象，且dao能操作数据库

a、在spring的配置文件中进行配置

　　1、配置连接池

　　2、配置SqlSessionFactory工厂（其中还需要配置映射文件路径mapperLocations）

　　3、配置扫描接口所在的包

b、dao上加上注解@MapperScan（写@Repository是不行的，无法与映射文件做关联，查询时会报错）

c、service中注入dao，并调用dao的方法

目录结构如下：

代码实现如下：

1、index.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2019/12/9
  Time: 12:50
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <%--访问路径是相对路径，前边没有/--%>
    <a href="emp/queryusers">springmvc测试</a>
    <form action="emp/addEmp" method="post">
        员工姓名：<input type="text" name="lastName"><br>
        邮箱：<input type="text" name="email"><br>
        性别<input type="text" name="gender"><br>
        部门编号：<input type="text" name="dId"><br>
        <input type="submit" value="提交">
    </form>
</body>
</html>

2、EmpController.java

package com.example.controller;

import com.example.domain.Employee;
import com.example.service.EmpService;
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 javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

@Controller
@RequestMapping("/emp")
public class EmpController {
    //service是spring管理的，只有spring整合了springmvc后才能依赖注入
    @Autowired
    private EmpService empService;
    @RequestMapping("/queryusers")
    public String queryusers(Model model){
        List<Employee> users = empService.queryusers();
        System.out.println("执行EmpController中的queryusers");
        model.addAttribute("users",users);
        System.out.println(users);
        return "list";
    }
    @RequestMapping("addEmp")
    public void addEmp(Employee employee, HttpServletRequest request, HttpServletResponse response)throws Exception{
        empService.addEmp(employee);
        response.sendRedirect(request.getContextPath()+"/emp/queryusers");

    }
}

3、EmpDao.java

package com.example.dao;

import com.example.domain.Employee;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.stereotype.Repository;

import java.util.List;

@MapperScan
/*@Repository*/
public interface EmpDao {
    public List<Employee> queryusers();

    public void addEmp(Employee employee);
}

4、Employee.java

package com.example.domain;

public class Employee {
    private int id;
    private String lastName;
    private String email;
    private String gender;
    private int dId;

    public int getId() {
        return id;
    }

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

    public String getLastName() {
        return lastName;
    }

    public void setLastName(String lastName) {
        this.lastName = lastName;
    }

    public String getEmail() {
        return email;
    }

    public void setEmail(String email) {
        this.email = email;
    }

    public String getGender() {
        return gender;
    }

    public void setGender(String gender) {
        this.gender = gender;
    }

    public int getdId() {
        return dId;
    }

    public void setdId(int dId) {
        this.dId = dId;
    }

    @Override
    public String toString() {
        return "Employee{" +
                "id=" + id +
                ", lastName='" + lastName + '\'' +
                ", email='" + email + '\'' +
                ", gender='" + gender + '\'' +
                ", dId=" + dId +
                '}';
    }
}

5、EmpMapper.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">
<!--命名空间应该是对应接口的包名+接口名 -->
<mapper namespace="com.example.dao.EmpDao">
    <!--id应该是接口中的方法，结果类型如没有配置别名则应该使用全名称 -->
    <select id="queryusers" resultType="com.example.domain.Employee">
        select id,lastName,email,gender from employee
    </select>

    <insert id="addEmp" parameterType="com.example.domain.Employee">
        insert into employee values(null,#{lastName},#{email},#{gender},#{dId})
    </insert>
</mapper>

6、EmpServiceImpl.java

package com.example.service.impl;

import com.example.dao.EmpDao;
import com.example.domain.Employee;
import com.example.service.EmpService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.ui.Model;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.List;

@Service("empService")
public class EmpServiceImpl implements EmpService {
    @Autowired
    private EmpDao empDao;
    @Override
    public List<Employee> queryusers() {
        List<Employee> users = empDao.queryusers();
        System.out.println("执行EmpServiceImpl中的queryusers方法");
        return users;
    }

    @Override
//    @Transactional
    public void addEmp(Employee employee) throws RuntimeException{
        System.out.println("执行EmpServiceImpl中的addEmp方法");
        empDao.addEmp(employee);
        int a=10/0;
        System.out.println(a);
    }
}

7、EmpTest.java

package com.example.test;

import com.example.service.EmpService;
import com.example.service.impl.EmpServiceImpl;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class EmpTest {
    /*spring环境搭建测试 */
    @Test
    public void run1(){
        //加载配置文件
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        //获取对象
        EmpService empService = (EmpServiceImpl)ac.getBean("empService");
        //调用方法
        empService.queryusers();

    }
}

8、list.jsp

<%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2019/12/9
  Time: 12:45
  To change this template use File | Settings | File Templates.
--%>

<%@ page contentType="text/html;charset=UTF-8" language="java" isELIgnored="false" %>
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>Title</title>
</head>
<body>
    <h3>成功进入list页面</h3>
    <c:forEach items="${users}" var="user">
        ${user.lastName}
    </c:forEach>
</body>
</html>

9、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>4.0.0</modelVersion>

  <groupId>com.example</groupId>
  <artifactId>springmvc-sping-mybatis</artifactId>
  <version>1.0-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>springmvc-sping-mybatis Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.7</maven.compiler.source>
    <maven.compiler.target>1.7</maven.compiler.target>
    <spring.version>5.0.2.RELEASE</spring.version>
  </properties>

  <dependencies>
    <!--添加spring、springmvc依赖-->
    <!--  aop   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aop</artifactId>
      <version>${spring.version}</version>
    </dependency>

    <!--  aspects   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-aspects</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--  beans   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-beans</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--  contexts   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-context</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--  core    -->
    <!--<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-core</artifactId>
      <version>${spring.version}</version>
    </dependency>-->
    <!--  expression   -->
    <!--<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-expression</artifactId>
      <version>${spring.version}</version>
    </dependency>-->
    <!--  orm   -->
    <!--<dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-orm</artifactId>
      <version>${spring.version}</version>
    </dependency>-->
    <!--  jdbc   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-jdbc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--  test   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-test</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--  tx   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-tx</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--  web   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-web</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!--  webmvc   -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.12</version>
      <scope>compile</scope>
    </dependency>
    <!--添加spring、springmvc依赖-->
    <!--mybatis-spring适配器 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis-spring</artifactId>
      <version>1.3.0</version>
    </dependency>
    <!--mysql数据库驱动，版本要与所装数据库版本兼容，否则会报错 -->
    <dependency>
      <groupId>mysql</groupId>
      <artifactId>mysql-connector-java</artifactId>
      <version>8.0.13</version>
    </dependency>
    <!-- mybatis ORM框架 -->
    <dependency>
      <groupId>org.mybatis</groupId>
      <artifactId>mybatis</artifactId>
      <version>3.4.1</version>
    </dependency>
    <!--c3p0 连接池 -->
    <dependency>
      <groupId>c3p0</groupId>
      <artifactId>c3p0</artifactId>
      <version>0.9.1.2</version>
    </dependency>
    <!--配置页面引入的jstl所需的依赖-->
    <dependency>
      <groupId>jstl</groupId>
      <artifactId>jstl</artifactId>
      <version>1.2</version>
    </dependency>
    <dependency>
      <groupId>javax.servlet</groupId>
      <artifactId>jsp-api</artifactId>
      <version>2.0</version>
      <scope>provided</scope>
    </dependency>

  </dependencies>

  <build>
    <!--resources这段配置必须加，否则dao接口和映射文件无法绑定，访问时会报错-->
    <resources>
      <resource>
        <directory>src/main/java</directory>
        <includes>
          <include>**/*.properties</include>
          <include>**/*.xml</include>
        </includes>
        <filtering>false</filtering>
      </resource>
    </resources>
    <finalName>springmvc-sping-mybatis</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
      </plugins>
    </pluginManagement>
  </build>
</project>

10、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 Application</display-name>
  <!--配置监听器，监听到容器启动的时候加载spring的配置文件，默认只加载/WEB-INF/applicationContext.xml-->
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <!--设置加载spring配置文件的路径-->
  <context-param>
    <param-name>contextConfigLocation</param-name>
    <param-value>classpath:applicationContext.xml</param-value>
  </context-param>
  <!--配置springmvc的前端控制器-->
  <servlet>
    <servlet-name>dispatcherServlet</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <init-param>
      <!--加载springmvc.xml，使其配置生效-->
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:springmvc.xml</param-value>
    </init-param>
    <!--启动时就创建DispatcherServlet对象，所以启动时就会加载springmvc.xml-->
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>dispatcherServlet</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>

  <!--配置解决中文乱码的过滤器-->
  <filter>
    <filter-name>characterEncodingFilter</filter-name>
    <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
  </filter>
  <filter-mapping>
    <filter-name>characterEncodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
  </filter-mapping>

</web-app>

11、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:aop="http://www.springframework.org/schema/aop"
       xmlns:c="http://www.springframework.org/schema/c"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:lang="http://www.springframework.org/schema/lang"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-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/util http://www.springframework.org/schema/util/spring-util-4.3.xsd
      http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
      http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.3.xsd
      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd
      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.3.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd ">

    <!--spring环境，开启注解扫描，管理service层，不应该管理controller层，controller层应该由springmvc管理-->
    <context:component-scan base-package="com.example">
        <!--该包下的哪些注解不扫描-->
        <context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--spring整合mybats开始-->
    <!--配置连接池-->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="com.mysql.jdbc.Driver" />
        <property name="jdbcUrl" value="jdbc:mysql://192.168.225.132:3306/jdbc?useSSL=false" />
        <property name="user" value="root" />
        <property name="password" value="123" />
    </bean>
    <!--配置SqlSessionFactory工厂-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <!-- 自动扫描mapping.xml文件，**表示迭代查找，且dao接口上写@MapperScan -->
        <property name="mapperLocations" value="classpath:com/example/mapper/*.xml  " />
    </bean>
    <!--配置扫描接口所在的包-->
    <bean id="mapperScanner" class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.example.dao"/>
        <!--<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>-->
    </bean>
    <!--spring整合mybats结束-->

    <!--配置spring声明式事物管理开始-->
    <!--1配置事物管理-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!--2配置事物通知，即不同方法的事物管理方式-->
    <tx:advice id="txAdvice" transaction-manager="transactionManager">
        <tx:attributes>
            <tx:method name="query*" read-only="true"/>
            <tx:method name="*" isolation="DEFAULT"/>
        </tx:attributes>
    </tx:advice>
    <!--3配置AOP增加，即哪些方法上加事物-->
    <aop:config>
        <!--任意返回类型，com.example.service.impl包下以ServiceImpl结尾的类，任意参数的任意方法-->
        <aop:advisor advice-ref="txAdvice" pointcut="execution(* com.example.service.impl.*.*.*(..))"/>
    </aop:config>

<!--配置spring声明式事物管理结束-->

</beans>

12、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:aop="http://www.springframework.org/schema/aop"
       xmlns:c="http://www.springframework.org/schema/c"
       xmlns:cache="http://www.springframework.org/schema/cache"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:jdbc="http://www.springframework.org/schema/jdbc"
       xmlns:jee="http://www.springframework.org/schema/jee"
       xmlns:lang="http://www.springframework.org/schema/lang"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:p="http://www.springframework.org/schema/p"
       xmlns:task="http://www.springframework.org/schema/task"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xmlns:util="http://www.springframework.org/schema/util"
       xsi:schemaLocation="http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-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/util http://www.springframework.org/schema/util/spring-util-4.3.xsd
      http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.3.xsd
      http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache-4.3.xsd
      http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-4.3.xsd
      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
      http://www.springframework.org/schema/lang http://www.springframework.org/schema/lang/spring-lang-4.3.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd ">
    <!--开启注解扫描，只扫描controller-->
    <context:component-scan base-package="com.example">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
    </context:component-scan>

    <!--视图解析器，根据Controller返回的字符串找对应的文件-->
    <bean id="internalResourceViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!--文件路径-->
        <property name="prefix" value="/WEB-INF/pages/" />
        <!--文件后缀-->
        <property name="suffix" value=".jsp" />
    </bean>

    <!--jsp页面引入的js文件也会被拦截，配置哪些静态资源文件不要被前端控制器拦截-->
    <mvc:resources mapping="/js/" location="/js/**" />
    <mvc:resources mapping="/css/" location="/css/**" />
    <mvc:resources mapping="/images/" location="/images/**" />
    <!--开启springmvc框架注解的支持-->
    <mvc:annotation-driven/>

</beans>

如有理解不到之处，望指正！

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