JavaSSM框架整合

時間 2019-12-08

標籤 javassm 框架整合简体版

原文原文鏈接

SSM整合

ssm框架框架整合

在博客的前面介紹了mybatis，spring，springmvc的使用，那麼這篇博客將介紹將mybatis和spring，springmvc的整合。php

整合以前，咱們須要明白一個點，spring和mybatis之間進行整合不像spring和springmvc同樣是自然一體，因此在中間就須要一個磨合劑，那就是mybatis-spring這個依賴。html

jar包的導入

使用maven進行項目管理java

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

<!--JSTL用於在控制器中將模型綁定到JSP中-->
<dependency>
    <groupId>javax.servlet</groupId>
    <artifactId>jstl</artifactId>
    <version>1.2</version>
</dependency>

<!--添加spring的依賴-->
<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的依賴-->
<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>

<!--利用它處理事務問題-->
<dependency>
    <groupId>org.springframework</groupId>
    <artifactId>spring-tx</artifactId>
    <version>${spring.version}</version>
</dependency>

<!--添加數據庫Mysql驅動-->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.13</version>
</dependency>

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

<!--整合Mybatis與Spring的依賴-->
<dependency>
    <groupId>org.mybatis</groupId>
    <artifactId>mybatis-spring</artifactId>
    <version>1.3.0</version>
</dependency>
<!-- Mybatis分頁依賴 -->
<dependency>
    <groupId>com.github.pagehelper</groupId>
    <artifactId>pagehelper</artifactId>
    <version>4.1.6</version>
</dependency>

<!-- 處理時間日期格式 -->
<dependency>
    <groupId>joda-time</groupId>
    <artifactId>joda-time</artifactId>
    <version>2.9.9</version>
</dependency>

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

<!--日誌-->
<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依賴-->
<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>
<!--有時候不加可能會報錯-->
<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>

<!-- 新添加處理json爲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>

<!-- 數據源的引入， 池化技術 -->
<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庫-->
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version> 1.2.47</version>
</dependency>

<!--java發送http請求的庫-->
<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>

在這裏面導入的jar包有點多，不過能夠基本知足咱們的需求了。mysql

文件的配置

首先，咱們要明確文件的配置從哪裏開始，那麼確定是須要最早配置web.xml了，由於它管理着web項目的配置信息。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 做用就是啓動Web容器時，自動裝配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其實就至關於resources文件夾-->
        <param-value>classpath:spring/applicationContext.xml</param-value>
    </context-param>

    <!-- 防止Spring內存溢出監聽器 -->
    <listener>
        <listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
    </listener>

    <!--servlet分發-->
    <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字符編碼過濾器 -->
    <filter>
        <filter-name>characterEncodingFilter</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <!-- 須要使用的字符集 -->
            <param-name>encoding</param-name>
            <param-value>UTF-8</param-value>
        </init-param>
        <init-param>
            <!--是否強制設置request的編碼爲encoding，即UTF-8，默認爲false -->
            <param-name>forceRequestEncoding</param-name>
            <param-value>false</param-value>
        </init-param>
        <init-param>
            <!--是否強制設置response的編碼爲encoding，即UTF-8 -->
            <param-name>forceResponseEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>

    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <!-- 這裏必須寫 /* -->
        <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,咱們關於上下文文件的引入就只寫了一個applicationContext.xml,那麼其餘文件怎麼辦呢？咱們能夠在applicationContext.xml文件中引入其餘的文件。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和其餘整合的配置文件 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">

    <!--掃描controller的註解 填寫本身的控制器的包 -->
    <context:component-scan base-package="cc.weno.controller"/>
    <!--靜態資源放行問題-->
    <mvc:default-servlet-handler/>
    <!--配置代理-->
    <mvc:annotation-driven/>

    <!--配置攔截器-->
    <mvc:interceptors>
        <!--配置一個攔截器 能夠配置多個，那麼攔截順序則是從上到下 -->
        <mvc:interceptor>
            <!--攔截的URI /* 表明攔截這一層的任意字符 /** 表明攔截任意層次的任意字符 -->
            <mvc:mapping path="/**"/>
            <!--不進行攔截的uri-->
            <mvc:exclude-mapping path="/index"/>
            <mvc:exclude-mapping path="/login"/>
            <!-- 攔截器的包 -->
            <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，咱們須要配置一下jdbc.properties數據庫

mysql.driver=com.mysql.jdbc.Driver
mysql.url=數據庫地址 例如：jdbc:mysql://localhost:3306/test
mysql.username=帳號
mysql.password=密碼

#定義初始鏈接數
dbcp.initialSize=0
#定義最大鏈接數
dbcp.maxActive=20
#定義最大空閒
dbcp.maxIdle=20
#定義最小空閒
dbcp.minIdle=1
#定義最長等待時間
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">

    <!--自動掃描包，包括控制層和持久層 -->
    <context:component-scan base-package="cc.weno"/>

    <!--引入數據庫配置文件-->
    <bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <!-- value 填寫jdbc.properties文件的位置 -->
        <property name="location" value="classpath:/config/jdbc.properties"/>
    </bean>

    <!--配置鏈接池-->
    <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}"/>
        <!--定義數據庫的鏈接-->
        <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，就不須要像之前同樣寫mybati的配置文件了-->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <property name="dataSource" ref="dataSource"/>
        <!-- 自動掃描mapping.xml文件 注意路徑是"/"不是"."-->
        <property name="mapperLocations" value="classpath:mybatis/*.xml"/>
        <property name="configuration">
            <!--能夠將以前mybatis的一些配置項轉移到這裏來-->
            <bean class="org.apache.ibatis.session.Configuration">
                <property name="mapUnderscoreToCamelCase" value="true"/>
            </bean>
        </property>
    </bean>

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

    <!--數據庫事務管理-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
</beans>

項目結構如圖所示

層	做用	設計
持久層(DAO層)	DAO層負責與數據庫聯繫，進行數據持久化	首先設計接口，而後再配置×××mapper.xml文件
業務層（Service層）	負責業務模塊的邏輯應用設計	先設計接口，再設計實現類，而後調用接口來實現邏輯業務（spring-mybatis.xml文件配置後，直接調用）
Control層（控制層）	負責具體模塊的控制	調用Service層的接口來控制業務

DAO層和前面的博客配置沒有什麼區別，讓咱們主要來看看Service層的配置。

首先，先定義UserService的接口

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

而後進行Service接口的實現，使用@Service標註Service層

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

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

在Controller層中

@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;
    }
}