SSM整合时配置文件的编写

左手的ㄟ右手 2023-10-18 12:46 29阅读 0赞

## 编写web.xml ##

### 1.配置项目初始化时启动Spring容器 ###

传递参数，spring配置文件的位置

<context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext.xml</param-value>
     </context-param>
    
    
     <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
     </listener>

其中applicationContext.xml为spring配置文件，位置在src/main/resource目录下。

### 2.编写SpringMVC前段控制器，拦截所有请求 ###

方式一：

在param中通过location指定springMVC配置文件的位置

<servlet>
      <servlet-name>dispatcherServlet</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      <init-param>
       <param-name>contextConfigLocation</param-name>
       <param-value>location</param-value>
      </init-param>
      <load-on-startup>1</load-on-startup>
     </servlet>
    
     
     <servlet-mapping>
      <servlet-name>dispatcherServlet</servlet-name>
      <url-pattern>/</url-pattern>
     </servlet-mapping>

方式二：

去掉init-param,名字统一改为dispatcherServlet,然后在与web.xml同级目录下新建dispatcherServlet-servlet.xml

其中dispatcherServlet要与上面的servlet-name一致。

<servlet>
      <servlet-name>dispatcherServlet</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      
      <load-on-startup>1</load-on-startup>
     </servlet>
    
     
     <servlet-mapping>
      <servlet-name>dispatcherServlet</servlet-name>
      <url-pattern>/</url-pattern>
     </servlet-mapping>

### 3.编写springMVC带的字符编码过滤器，字符编码器要放在所有过滤器之前 ###

<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>
      <init-param>
       <param-name>forceRequestEncoding</param-name>
       <param-value>true</param-value>
      </init-param>
      <init-param>
       <param-name>forceResponseEncoding</param-name>
       <param-value>true</param-value>
      </init-param>
     </filter>
     <filter-mapping>
      <filter-name>CharacterEncodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
     </filter-mapping>

### 4.配置Rest风格的URL的过滤器 ###

<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>
     <filter>
      <filter-name>HttpPutFormContentFilter</filter-name>
      <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
     </filter>
     <filter-mapping>
      <filter-name>HttpPutFormContentFilter</filter-name>
      <url-pattern>/*</url-pattern>
     </filter-mapping>

### 5.完整的web.xml代码 ###

<?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_2_5.xsd"
     id="WebApp_ID" version="2.5">
     
     
     
     <context-param>
      <param-name>contextConfigLocation</param-name>
      <param-value>classpath:applicationContext.xml</param-value>
     </context-param>
    
     
     <listener>
      <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
     </listener>
     
     
     
     <servlet>
      <servlet-name>dispatcherServlet</servlet-name>
      <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
      
      <load-on-startup>1</load-on-startup>
     </servlet>
    
     
     <servlet-mapping>
      <servlet-name>dispatcherServlet</servlet-name>
      <url-pattern>/</url-pattern>
     </servlet-mapping>
     
     
     <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>
      <init-param>
       <param-name>forceRequestEncoding</param-name>
       <param-value>true</param-value>
      </init-param>
      <init-param>
       <param-name>forceResponseEncoding</param-name>
       <param-value>true</param-value>
      </init-param>
     </filter>
     <filter-mapping>
      <filter-name>CharacterEncodingFilter</filter-name>
      <url-pattern>/*</url-pattern>
     </filter-mapping>
     
     
     <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>
     <filter>
      <filter-name>HttpPutFormContentFilter</filter-name>
      <filter-class>org.springframework.web.filter.HttpPutFormContentFilter</filter-class>
     </filter>
     <filter-mapping>
      <filter-name>HttpPutFormContentFilter</filter-name>
      <url-pattern>/*</url-pattern>
     </filter-mapping>
     
     
    </web-app>

## 编写springMVC的配置文件 ##

在上面方式二新建的dispatcherServlet-servlet.xml中进行配置

主要配置网站的跳转逻辑的控制、配置视图解析器，方便页面返回等。

所以我们先在项目下新建相应的mvc结构的包。

![outside_default.png][]![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L0JBREFPX0xJVU1BTkdfUUlaSEk_size_16_color_FFFFFF_t_70][]

### 1.配置扫描组件 ###

<context:component-scan base-package="com.badao" use-default-filters="false">
      
      <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
     </context:component-scan>

SpringMVC默认是扫描所有的，所以为了让它只扫描控制器，要加上use-default-filters="false"

### 2.配置视图解析器 ###

<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
      <property name="prefix" value="/WEB-INF/views/"></property>
      <property name="suffix" value=".jsp"></property>
     </bean>

在WEB-INF目录下新建views目录，用来存放jsp页面，配置好前缀与后缀，就能解析视图，返回相应页面。

### 3.SpringMVC的两个标准配置 ###

<mvc:default-servlet-handler/>
     
     <mvc:annotation-driven/>

### 4.完整配置springMVC配置文件代码 ###

## 编写spring的配置文件 ##

在src/main/resource目录下新建applicationContext.xml

这里主要配置和业务逻辑有关的，比如数据源、事务控制等。

### 1.配置数据源 ###

<context:property-placeholder location="classpath:dbconfig.properties" />
     <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
      <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
      <property name="driverClass" value="${jdbc.driverClass}"></property>
      <property name="user" value="${jdbc.user}"></property>
      <property name="password" value="${jdbc.password}"></property>
     </bean>

其中location="classpath:dbconfig.properties" 就是属性文件存放的位置。

通过<context:property-placeholder location="classpath:dbconfig.properties" />就可以将属性文件引入。

### 2.新建属性文件dbconfig.properties ###

在resource下新建dbconfig.properties文件，用来存取数据源的相关属性，在applicationContext.xml中就可以通过

$\{\}来获取属性。

jdbc.jdbcUrl=jdbc:mysql://localhost:3306/ssm_crud
    jdbc.driverClass=com.mysql.jdbc.Driver
    jdbc.user=root
    jdbc.password=123456

这里ssm\_crud是建立的mysql的数据库的名字

root与123456是对应自己的连接数据库的用户名和密码

### 3.配置扫描业务逻辑组件 ###

<context:component-scan base-package="com.badao">
      <context:exclude-filter type="annotation"
       expression="org.springframework.stereotype.Controller" />
     </context:component-scan>

### 4.配置和Mybatis整合 ###

<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
      
      <property name="configLocation" value="classpath:mybatis-config.xml"></property>
      <property name="dataSource" ref="pooledDataSource"></property>
      
      <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
     </bean>

所以在resource下新建mapper目录用来存放mapper文件，在上面已经声明位置。

### 5.配置扫描器 ###

将mybatis接口的实现加入到ioc容器中

<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      
      <property name="basePackage" value="com.badao.ssm.dao"></property>
     </bean>

### 6.配置事务控制 ###

<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
      
      <property name="dataSource" ref="pooledDataSource"></property>
     </bean>
     
     <aop:config>
      
      <aop:pointcut expression="execution(* com.badao.ssm.service..*(..))" id="txPoint"/>
      
      <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
     </aop:config>
     
     
     <tx:advice id="txAdvice" transaction-manager="transactionManager">
      <tx:attributes>
       
       <tx:method name="*"/>
       
       <tx:method name="get*" read-only="true"/>
      </tx:attributes>
     </tx:advice>

### 7.完整的spring的配置文件 ###

<?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:aop="http://www.springframework.org/schema/aop"
     xmlns:tx="http://www.springframework.org/schema/tx"
     xsi:schemaLocation="http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
      http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd
      http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd">
    
     <context:component-scan base-package="com.badao">
      <context:exclude-filter type="annotation"
       expression="org.springframework.stereotype.Controller" />
     </context:component-scan>
    
     
     
     <context:property-placeholder location="classpath:dbconfig.properties" />
     <bean id="pooledDataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
      <property name="jdbcUrl" value="${jdbc.jdbcUrl}"></property>
      <property name="driverClass" value="${jdbc.driverClass}"></property>
      <property name="user" value="${jdbc.user}"></property>
      <property name="password" value="${jdbc.password}"></property>
     </bean>
    
     
     <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
      
      <property name="configLocation" value="classpath:mybatis-config.xml"></property>
      <property name="dataSource" ref="pooledDataSource"></property>
      
      <property name="mapperLocations" value="classpath:mapper/*.xml"></property>
     </bean>
    
     
     <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
      
      <property name="basePackage" value="com.badao.ssm.dao"></property>
     </bean>
     
     
     <bean id="sqlSession" class="org.mybatis.spring.SqlSessionTemplate">
      <constructor-arg name="sqlSessionFactory" ref="sqlSessionFactory"></constructor-arg>
      <constructor-arg name="executorType" value="BATCH"></constructor-arg>
     </bean>
     
    
     
     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
      
      <property name="dataSource" ref="pooledDataSource"></property>
     </bean>
     
     <aop:config>
      
      <aop:pointcut expression="execution(* com.badao.ssm.service..*(..))" id="txPoint"/>
      
      <aop:advisor advice-ref="txAdvice" pointcut-ref="txPoint"/>
     </aop:config>
     
     
     <tx:advice id="txAdvice" transaction-manager="transactionManager">
      <tx:attributes>
       
       <tx:method name="*"/>
       
       <tx:method name="get*" read-only="true"/>
      </tx:attributes>
     </tx:advice>
     
     
     
    </beans>

## 编写MyBatis的配置文件 ##

在resource下新建mybatis-config.xml,作为全局配置文件

### 1.开启驼峰命名规则 ###

### 2.开启别名 ###

### 3.完整mybatis-config.xml文件代码 ###

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE configuration
      PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
      "http://mybatis.org/dtd/mybatis-3-config.dtd">
    <configuration>
     <settings>
      <setting name="mapUnderscoreToCamelCase" value="true"/>
     </settings>
     
     <typeAliases>
      <package name="com.badao.ssm.bean"/>
     </typeAliases>
    
    </configuration>

## 代码下载 ##

本阶段示例代码下载

[https://download.csdn.net/download/badao\_liumang\_qizhi/10857091][https_download.csdn.net_download_badao_liumang_qizhi_10857091]

[outside_default.png]: https://csdnimg.cn/release/phoenix/outside_default.png
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[https_download.csdn.net_download_badao_liumang_qizhi_10857091]: https://download.csdn.net/download/badao_liumang_qizhi/10857091