IDEA环境下SSM整合------环境配置

声明：本文纯为个人笔记整理，如有不妥之处还望及时指出，欢迎转载！ 

只为解决操作问题，可以从第二幅图往后看！

一、做不出详细的概念叙述和文本设计，本文主要以实战步骤为主，少量解释为辅助，下面请大家牢记两幅图：

截图来自张开涛博客

      典型的jsp(java server page)是一种服务器执行的组件，运行在标准HTML页面的java技术，最终还是被编译成服务器可以识别的servlet代码，生成.class文件，相比Servlet开发简洁、方便，缺点是视图显示、业务控制比较复杂，而且把对后端操作放在jsp页面很不安全；

      故产生了Jsp+JavaBean开发，使用<jsp:usebean>标签，自动将请求封装为javabean组件，可以认为是为了增强jsp开发；这也是单一的开发思路，即下图所示，这种模型同样是没有本子上解决问题，大量的业务处理依然在jsp页面中，而bean负责的只有参数的请求处理；所以出现了我们的MVC模型；

jsp+bean模型

MVC模型

在JvavEE的开发中，可以认为下图就是我们的web mvc模型

控制器用servlet、模型用JavaBean、视图采用Jsp

二、下面开始步入正题；

进行springmvc开发，写业务逻辑之前，首先要做到：

1.开发环境（jdk+IDE+maven+mysql）

2.配置环境（web.xml、pom.xml、application.xml、springmvc.xml、mybatis.xml）

3.定义domian、生成dao、mapper

按照上述步骤进行开发，便于在后期调错，另外 可以个那好的梳理业务逻辑，本文只介绍，文件配置到连接上数据库。

三、SpringMvc开发用到的通用配置文件

1.pom.xml这里粘贴一个详细的pom文件，包含各种依赖和maven常用的几个插件

<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/maven-v4_0_0.xsd"> <modelVersion>4.0.0</modelVersion> <groupId>Traing</groupId> <artifactId>springmvc</artifactId> <packaging>war</packaging> <version>0.0.1-SNAPSHOT</version> <name>springmvc</name> <url>http://maven.apache.org</url> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> <webVersion>2.3</webVersion> </properties> <dependencies> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-core</artifactId> <version>2.4.3</version> </dependency> <dependency> <groupId>com.fasterxml.jackson.core</groupId> <artifactId>jackson-databind</artifactId> <version>2.4.3</version> </dependency> <!--以下四个是SpringMvc中数据校验jar包jsr 303的相关依赖 --> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-validator</artifactId> <version>5.1.3.Final</version> </dependency> <dependency> <groupId>javax.validation</groupId> <artifactId>validation-api</artifactId> <version>1.1.0.Final</version> </dependency> <dependency> <groupId>org.jboss.logging</groupId> <artifactId>jboss-logging</artifactId> <version>3.1.1.GA</version> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>bean-validator</artifactId> <version>3.0-JBoss-4.0.2</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.enterprise.deploy</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.jms</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.management.j2ee</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.eclipse.persistence</groupId> <artifactId>javax.persistence</artifactId> <version>2.0.0</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.resource</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.security.auth.message</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.security.jacc</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.servlet</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.servlet.jsp</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.servlet.jsp.jstl</artifactId> <version>3.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.xml.bind</groupId> <artifactId>jaxb-api-osgi</artifactId> <version>2.2.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.ws.rs</groupId> <artifactId>jsr311-api</artifactId> <version>1.1.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish.web</groupId> <artifactId>jstl-impl</artifactId> <version>1.2</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.mail</groupId> <artifactId>mail</artifactId> <version>1.4.3</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.xml</groupId> <artifactId>webservices-api-osgi</artifactId> <version>2.0.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.jboss.weld</groupId> <artifactId>weld-osgi-bundle</artifactId> <version>1.0.1-SP3</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish.web</groupId> <artifactId>javax.servlet.jsp.jstl</artifactId> <version>1.2.1</version> </dependency> <!-- 项目其他依赖 --> <!-- mysql 依赖 https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.23</version> </dependency> <!-- junit 依赖 --> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.12</version> <scope>test</scope> </dependency> <!-- Mybatis --> <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis</artifactId> <version>3.2.1</version> </dependency> <!-- spring 依赖 --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>3.2.18.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context-support</artifactId> <version>3.2.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-test --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-test</artifactId> <version>3.2.18.RELEASE</version> <scope>test</scope> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-core --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>3.2.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-web --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>3.2.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-aop --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>3.2.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/aspectj/aspectjweaver --> <dependency> <groupId>aspectj</groupId> <artifactId>aspectjweaver</artifactId> <version>1.5.4</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-tx --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-tx</artifactId> <version>3.2.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-jdbc</artifactId> <version>3.2.18.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework/spring-orm --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>3.2.18.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>3.2.18.RELEASE</version> </dependency> <!-- spring mybatis 整合依赖 --> <dependency> <groupId>org.mybatis</groupId> <artifactId>mybatis-spring</artifactId> <version>1.3.1</version> </dependency> <!--生成代码插件 --> <dependency> <groupId>org.mybatis.generator</groupId> <artifactId>mybatis-generator-core</artifactId> <version>1.3.3</version> <type>jar</type> </dependency> <!-- 连接池 --> <!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp --> <dependency> <groupId>commons-dbcp</groupId> <artifactId>commons-dbcp</artifactId> <version>1.4</version> </dependency> <!-- https://mvnrepository.com/artifact/commons-pool/commons-pool --> <dependency> <groupId>commons-pool</groupId> <artifactId>commons-pool</artifactId> <version>1.6</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.poi/poi --> <dependency> <groupId>org.apache.poi</groupId> <artifactId>poi</artifactId> <version>3.17</version> </dependency> <!-- 文件上传 --> <!-- https://mvnrepository.com/artifact/commons-fileupload/commons-fileupload --> <dependency> <groupId>commons-fileupload</groupId> <artifactId>commons-fileupload</artifactId> <version>1.3</version> </dependency> <!-- https://mvnrepository.com/artifact/commons-io/commons-io --> <dependency> <groupId>commons-io</groupId> <artifactId>commons-io</artifactId> <version>2.6</version> </dependency> <!-- 导入c3p0依赖 --> <dependency> <groupId>com.mchange</groupId> <artifactId>mchange-commons-java</artifactId> <version>0.2.3.1</version> </dependency> <dependency> <groupId>c3p0</groupId> <artifactId>c3p0</artifactId> <version>0.9.1.2</version> </dependency> <!-- log4j --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.16</version> </dependency> </dependencies> <build> //打成jar时会自动打包依赖 <plugins> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-resources-plugin</artifactId> <configuration> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.7</source> <target>1.7</target> <encoding>UTF-8</encoding> </configuration> </plugin> <plugin> <groupId>org.apache.maven.plugins</groupId> <artifactId>maven-shade-plugin</artifactId> <version>1.4</version> <configuration> <createDependencyReducedPom>true</createDependencyReducedPom> </configuration> <executions> <execution> <phase>package</phase> <goals> <goal>shade</goal> </goals> <configuration> <transformers> <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer"> <mainClass>com.cmos.task.TaskManager</mainClass> </transformer> </transformers> </configuration> </execution> </executions> </plugin> </plugins> </build> </project>

2.web.xml  需要注意其中两个配置文件 一个是application.xml ：主要配置dataSource、dao、service等跟持久化相近的非webBean

一个是springmvc.xml：配置controller、handlerResolver视图解析器等web层组件

<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>springmvc</display-name> <welcome-file-list> <welcome-file>/views/login.jsp</welcome-file> </welcome-file-list> <!-- 处理字符集编码 --> <filter> <filter-name>CharacterEncoding</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> <init-param> <param-name>forceEncoding</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>CharacterEncoding</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 配置springmvc核心过滤器 --> <servlet> <servlet-name>dispatcher</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:/springmvc.xml</param-value> </init-param> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>dispatcher</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> <!-- 配置spring的web工厂 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:/applicationContext.xml</param-value> </context-param> <!-- RESTful风格的配置：把POST请求转为PUT、DELETE请求--> <filter> <filter-name>HiddenHttpMethodFilter</filter-name> <filter-class>org.springframework.web.filter.HiddenHttpMethodFilter</filter-class> </filter> <filter-mapping> <filter-name>HiddenHttpMethodFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> </web-app>

3.application.xml由于我主要用的注解驱动开发，所以这个配置文件没有相关的dao、servic的bean配置、我将mybatis的配置单独写在Mybatis.xml文件里，但是不要忘记引入到这里。如果只有数据库配置的话，也可以直接写进来（不建议）

4.Mybatis.xml  注意db.properties文件中的内容username、password注意不要配置的太通用 有可能会和本机的配置冲突

db.properties文件中的内容 driverClassName=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/studentmanager?useUnicode=true&characterEncoding=UTF-8 jdbcUserName=root jdbcPassword=root Mybatis.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:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.2.xsd"> <context:property-placeholder location="classpath:db.properties"/> <!-- 配置数据源--> <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> <property name="driverClassName" value="${driverClassName}"> </property> <property name="url" value="${url}"> </property> <property name="username" value="${jdbcUserName}"> </property> <property name="password" value="${jdbcPassword}"> </property> </bean> <!--配置sqlSessionFactory--> <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean"> <!-- 加载mybatis的全局配置文件 <property name="configLocation" value="classpath:mybatis/sqlMapConfig.xml"/> --> <!-- 数据库连接池 --> <property name="dataSource" ref="dataSource"/> <property name="mapperLocations" value="classpath:/Mapper/*Mapper.xml"> </property> <property name="typeAliasesPackage" value="classpath:com.cmos.domain"> </property> </bean> <!-- mapper扫描器 --> <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer"> <!-- 扫描包路径，如果需要扫描多个包，中间使用半角逗号隔开 --> <property name="basePackage" value="com.cmos.dao"/> <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/> </bean> <!-- 事务管理 --> <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"> </property> </bean> <!-- 使用annotation注解方式配置事务 --> <tx:annotation-driven transaction-manager="transactionManager"/> </beans>

5.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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                           http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
                           http://www.springframework.org/schema/context
                           http://www.springframework.org/schema/context/spring-context-3.2.xsd
                           http://www.springframework.org/schema/mvc
                           http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd">
    <!-- 包含：webBean ViewResolver、handlerAdapter controller handlerMapping-->
    <!-- 配置自定义扫描的包 -->
    <context:component-scan base-package="com.cmos.controller,com.cmos.service,com.cmos.dao"/>
    <!-- 配置视图解析器：如何把handler方法返回值解析为实际的物理视图 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/views/">
        </property>
        <property name="suffix" value=".jsp">
        </property>
    </bean>
    <!-- default-servlet-handler 会在SpringMvc 上下文中定义一个DefaultServletHttpRequestHandler,
        它会对进入DispatcherServlet的请求进行筛查，如果发现没有经过映射的请求，就将该请求交由web应用服务器
         默认的Servlet处理，如果不是静态资源则用DispathcerServlet进行处理 -->
    <mvc:default-servlet-handler/>
    <mvc:annotation-driven>
    </mvc:annotation-driven>

    <!--拦截器-->
    <mvc:interceptors>
        <mvc:interceptor>
            <mvc:mapping path="/district"/>
            <mvc:mapping path="/organization"/>
            <mvc:mapping path="/unit"/>
            <mvc:mapping path="/student"/>
            <!--com.coms...是我项目的包的名称不要误解 -->
            <bean class="com.cmos.handlers.MyInterceptor"></bean>
        </mvc:interceptor>
    </mvc:interceptors>


    <!-- 配置SimpleMappingExceptionResolver -->
    <bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <prop key="java.lang.ArrayIndexOutOfBoundsException">error</prop>
            </props>
        </property>
    </bean>


</beans>

　6.dao和mapper.xml  我这里只粘了一个dao和mapper的样例

　　特别注意：

　　　　1.dao参数类型和Mapper的参数类型严格对称

　　　　2.mapper中的resultMap配置，前面是数据库字段名、后面是对应对象名，要严格一致

　　　　3.不要在Mybtais.xml中引入dao和mapper的位置

package com.cmos.dao;
import com.cmos.domain.District;
import org.apache.ibatis.annotations.Param;
import org.springframework.stereotype.Repository;

import java.util.List;

@Repository
public interface DistrictDao {


    int deleteByPrimaryKey(Integer disId);

    int insert(District record);

    int updateByExample(@Param("example") District example);

    List<District> selectAll();


}




Mapper.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.cmos.dao.DistrictDao">
  <resultMap id="BaseResultMap" type="com.cmos.domain.District">
    <id column="dis_id" jdbcType="INTEGER" property="disId" />
    <result column="dis_name" jdbcType="VARCHAR" property="disName" />
  </resultMap>

  <select id="selectAll"  resultMap="BaseResultMap">
    select dis_id,dis_name from district
  </select>

  <delete id="deleteByPrimaryKey" parameterType="java.lang.Integer">
    delete from district
    where dis_id = #{disId,jdbcType=INTEGER}
  </delete>

  <insert id="insert" parameterType="com.cmos.domain.District">
    insert into district (dis_id, dis_name)
    values (#{disId,jdbcType=INTEGER}, #{disName,jdbcType=VARCHAR})
  </insert>

  <update id="updateByExample" parameterType="com.cmos.domain.District">
    update district
    set dis_name = #{example.disName,jdbcType=VARCHAR}
    where dis_id = #{example.disId,jdbcType=INTEGER}
  </update>
</mapper>