JavaSSM框架整合

时间 2019-12-08

标签 javassm 框架整合繁體版

原文原文链接

SSM整合

ssm框架框架整合

在博客的前面介绍了mybatis，spring，springmvc的使用，那么这篇博客将介绍将mybatis和spring，springmvc的整合。php

整合以前，咱们须要明白一个点，spring和mybatis之间进行整合不像spring和springmvc同样是自然一体，因此在中间就须要一个磨合剂，那就是mybatis-spring这个依赖。html

jar包的导入

使用maven进行项目管理java

<!--添加Servlet的依赖-->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>javax.servlet-api</artifactId>
    <version>3.1.0</version>
    <scope>provided</scope>
</dependency>

<!--JSTL用于在控制器中将模型绑定到JSP中-->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>

<!--添加spring的依赖-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-core</artifactId>
    <version>${spring.version}</version>
</dependency>

<!--上下文-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context</artifactId>
    <version>${spring.version}</version>
</dependency>
<!--上下文支持包-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-context-support</artifactId>
    <version>${spring.version}</version>
</dependency>

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

<!--添加Spring MVC的依赖-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-webmvc</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-aspects</artifactId>
    <version>${spring.version}</version>
</dependency>
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-aop</artifactId>
    <version>${spring.version}</version>
</dependency>

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

<!--利用它处理事务问题-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>${spring.version}</version>
</dependency>

<!--添加数据库Mysql驱动-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.13</version>
</dependency>

<!--添加Mybatis依赖-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis</artifactId>
    <version>3.2.6</version>
</dependency>

<!--整合Mybatis与Spring的依赖-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.0</version>
</dependency>
<!-- Mybatis分页依赖 -->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>4.1.6</version>
</dependency>

<!-- 处理时间日期格式 -->
<dependency>
    <groupId>joda-time</groupId>
    <artifactId>joda-time</artifactId>
    <version>2.9.9</version>
</dependency>

<!-- 用于MD5加密 -->
<dependency>
    <groupId>commons-codec</groupId>
    <artifactId>commons-codec</artifactId>
    <version>1.10</version>
</dependency>

<!--日志-->
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.7</version>
</dependency>
<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.7</version>
</dependency>
<dependency>
    <groupId>log4j</groupId>
    <artifactId>log4j</artifactId>
    <version>1.2.17</version>
</dependency>

<!--添加Json依赖-->
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-databind</artifactId>
    <version>${jackson.version}</version>
</dependency>
<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-annotations</artifactId>
    <version>${jackson.version}</version>
</dependency>
<!--有时候不加可能会报错-->
<dependency>
    <groupId>net.sf.json-lib</groupId>
    <artifactId>json-lib</artifactId>
    <version>2.4</version>
    <classifier>jdk15</classifier>
</dependency>

<dependency>
    <groupId>com.fasterxml.jackson.core</groupId>
    <artifactId>jackson-core</artifactId>
    <version>${jackson.version}</version>
</dependency>

<!-- 新添加处理json为java bean -->
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-core-asl</artifactId>
    <version>1.9.13</version>
</dependency>
<dependency>
    <groupId>org.codehaus.jackson</groupId>
    <artifactId>jackson-mapper-asl</artifactId>
    <version>1.9.13</version>
</dependency>

<!-- 数据源的引入， 池化技术 -->
<dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.2.1</version>
</dependency>
<dependency>
    <groupId>commons-dbcp</groupId>
    <artifactId>commons-dbcp</artifactId>
    <version>1.2.2</version>
</dependency>

<!--阿里巴巴json库-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version> 1.2.47</version>
</dependency>

<!--java发送http请求的库-->
<dependency>
    <groupId>com.github.kevinsawicki</groupId>
    <artifactId>http-request</artifactId>
    <version>5.6</version>
</dependency>

<dependency>
    <groupId>junit</groupId>
    <artifactId>junit</artifactId>
    <version>4.11</version>
    <scope>test</scope>
</dependency>

在这里面导入的jar包有点多，不过能够基本知足咱们的需求了。mysql

文件的配置

首先，咱们要明确文件的配置从哪里开始，那么确定是须要最早配置web.xml了，由于它管理着web项目的配置信息。git

web.xmlgithub

<?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" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd http://www.springframework.org/schema/mvc/spring-mvc.xsd" version="3.1">

    <!--配置ContextLoaderListener，初始化IOC容器 做用就是启动Web容器时，自动装配ApplicationContext的配置信息 常常配合下面<context-param>使用 -->
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <!-- 上下文 -->
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <!--classpath其实就至关于resources文件夹-->
        <param-value>classpath:spring/applicationContext.xml</param-value>
    </context-param>

    <!-- 防止Spring内存溢出监听器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>

    <!--servlet分发-->
    <servlet>
        <servlet-name>springmvc</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>classpath:/spring/springmvc-servlet.xml</param-value>
        </init-param>
    </servlet>

    <!-- characterEncodingFilter字符编码过滤器 -->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <!-- 须要使用的字符集 -->
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <!--是否强制设置request的编码为encoding，即UTF-8，默认为false -->
            <param-name>forceRequestEncoding</param-name>
            <param-value>false</param-value>
        </init-param>
        <init-param>
            <!--是否强制设置response的编码为encoding，即UTF-8 -->
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <!-- 这里必须写 /* -->
        <url-pattern>/*</url-pattern>
    </filter-mapping>

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

</web-app>

applicationContext.xml文件的配置web

在web.xml文件配置中,咱们关于上下文文件的引入就只写了一个applicationContext.xml,那么其余文件怎么办呢？咱们能够在applicationContext.xml文件中引入其余的文件。spring

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" 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">

    <!--引入spring和其余整合的配置文件 好比spring-mybatis.xml等-->
    <import resource="classpath:/spring/spring-*.xml"/>
</beans>

配置springmvc-servlet.xml文件sql

<?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: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-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd">

    <!--扫描controller的注解 填写本身的控制器的包 -->
    <context:component-scan base-package="cc.weno.controller"/>
    <!--静态资源放行问题-->
    <mvc:default-servlet-handler/>
    <!--配置代理-->
    <mvc:annotation-driven/>

    <!--配置拦截器-->
    <mvc:interceptors>
        <!--配置一个拦截器 能够配置多个，那么拦截顺序则是从上到下 -->
        <mvc:interceptor>
            <!--拦截的URI /* 表明拦截这一层的任意字符 /** 表明拦截任意层次的任意字符 -->
            <mvc:mapping path="/**"/>
            <!--不进行拦截的uri-->
            <mvc:exclude-mapping path="/index"/>
            <mvc:exclude-mapping path="/login"/>
            <!-- 拦截器的包 -->
            <bean class="cc.weno.interceptor.LoginInterceptor"/>
        </mvc:interceptor>
    </mvc:interceptors>

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

</beans>

在配置mybatis文件以前，咱们须要配置一下jdbc.properties数据库

mysql.driver=com.mysql.jdbc.Driver
mysql.url=数据库地址 例如：jdbc:mysql://localhost:3306/test
mysql.username=帐号
mysql.password=密码

#定义初始链接数
dbcp.initialSize=0
#定义最大链接数
dbcp.maxActive=20
#定义最大空闲
dbcp.maxIdle=20
#定义最小空闲
dbcp.minIdle=1
#定义最长等待时间
dbcp.maxWait=60000

spring-mybatis.xml文件的配置

<?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:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/cache" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.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 http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/cache http://www.springframework.org/schema/cache/spring-cache.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">

    <!--自动扫描包，包括控制层和持久层 -->
    <context:component-scan base-package="cc.weno"/>

    <!--引入数据库配置文件-->
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <!-- value 填写jdbc.properties文件的位置 -->
        <property name="location" value="classpath:/config/jdbc.properties"/>
    </bean>

    <!--配置链接池-->
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close" >
        <property name="driverClassName" value="${mysql.driver}"/>
        <property name="url" value="${mysql.url}"/>
        <property name="username" value="${mysql.username}"/>
        <property name="password" value="${mysql.password}"/>
        <!--定义数据库的链接-->
        <property name="initialSize" value="${dbcp.initialSize}"/>
        <property name="maxIdle" value="${dbcp.maxIdle}"/>
        <property name="minIdle" value="${dbcp.minIdle}"/>
        <property name="maxWait" value="${dbcp.maxWait}"/>
        <property name="maxActive" value="${dbcp.maxActive}"/>
    </bean>

    <!--整合spring和mybatis，就不须要像之前同样写mybati的配置文件了-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自动扫描mapping.xml文件 注意路径是"/"不是"."-->
        <property name="mapperLocations" value="classpath:mybatis/*.xml"/>
        <property name="configuration">
            <!--能够将以前mybatis的一些配置项转移到这里来-->
            <bean class="org.apache.ibatis.session.Configuration">
                <property name="mapUnderscoreToCamelCase" value="true"/>
            </bean>
        </property>
    </bean>

    <!-- 扫描DAO持久层接口 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="cc.weno.mapper"/>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

    <!--数据库事务管理-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>

项目结构如图所示

层	做用	设计
持久层(DAO层)	DAO层负责与数据库联系，进行数据持久化	首先设计接口，而后再配置×××mapper.xml文件
业务层（Service层）	负责业务模块的逻辑应用设计	先设计接口，再设计实现类，而后调用接口来实现逻辑业务（spring-mybatis.xml文件配置后，直接调用）
Control层（控制层）	负责具体模块的控制	调用Service层的接口来控制业务

DAO层和前面的博客配置没有什么区别，让咱们主要来看看Service层的配置。

首先，先定义UserService的接口

public interface UserService {
    User getUser(String name);
}

而后进行Service接口的实现，使用@Service标注Service层

@Service("userService")
public class UserServiceImpl implements UserService {
    /** * mybatis的接口 */
    @Resource
    private UserMapper userMapper;

    // 直接进行使用
    @Override
    public User getUser(String name) {
        userMapper.getUser(name);
    }
}

在Controller层中

@Controller
public class UserController {

    @Resource
    private UserService userService;

    @RequestMapping(value = "/index")
    @ResponseBody
    public String index(@RequestParam("name")String name) {
        User u  =userService.getUser(name);
        return u;
    }
}

UserMapper.xml文件却是没有任何要更改的地方，只要别忘了配置<mapper namespace="cc.weno.mapper.UserMapper">文件就好了。

而后SSM框架基本的整合就到这里了，在这里面代码没几行，配置文件却是写了一大堆〒_〒【此时好想说：springboot真香】