搭建springWeb保姆级教程

经过我们对mybatis和spring框架的学习，我们即将要用框架进行前后端数据交互，已经脱离了那种用servlet的方式进行数据传输，今天让我们来搭建最基本的springweb框架！！！

1.创建一个web项目

2. 选择一个web项目

2.将spring集成mybatis

1.导入mybatis Jar包


<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>1.3.1version>
dependency>

2.配置 sqlSessionFactory(在spring-mybatis.xml中)


 <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
   
        <property name="dataSource" ref="dataSource">property>
  
        <property name="configLocation" value="classpath:mybatis-config.xml">property>
   
        <property name="mapperLocations" value="classpath:mappers/*Mappers.xml">
        property>
    bean>
    <bean id="mapperFactory"
          class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ffyc.ssm.dao">property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">
        property>
    bean>

3.将比较常用的包导入到项目中


        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>8.0.16version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.4.2version>
        dependency>
        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
            <scope>providedscope>
        dependency>
        
        <dependency>
            <groupId>com.alibabagroupId>
            <artifactId>druidartifactId>
            <version>1.1.10version>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-contextartifactId>
            <version>5.2.2.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>5.2.2.RELEASEversion>
        dependency>
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>8.0.16version>
        dependency>
         
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-aspectsartifactId>
            <version>5.2.2.RELEASEversion>
        dependency>

4.创建响应的包和类

5.配置对应的mybatis-config.xml文件


"1.0" encoding="UTF-8" ?>
configuration
        PUBLIC "-//mybatis.org//DTD Config
3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
 
    <settings>
        <setting name="logImpl" value="STDOUT_LOGGING"/>
    settings>
    
    <typeAliases>
        <package name="com.ffyc.ssm.model"/>
    typeAliases>
 
 
configuration>

6.配置spring.xml,开启全局扫描


"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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
          
    <context:component-scan base-package="com.ffyc.ssm"> context:component-scan>
    
 
     
    <aop:aspectj-autoproxy />
beans>

7.配置数据库db.xml


"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.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/tx
        http://www.springframework.org/schema/tx/spring-tx.xsd">
    <context:property-placeholder location="classpath:config.properties">context:property-placeholder>
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
 
        <property name="driverClassName" value="${driver}">property>
        <property name="url" value="${url}">property>
        <property name="username" value="${uname}">property>
        <property name="password" value="${pwd}">property>
        <property name="initialSize" value="5">property>
        <property name="maxActive" value="10">property>
 
bean>
 
 
    
    <bean id="transactionManager"
          class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource">property>
    bean>
 
    
    <tx:annotation-driven transaction-manager="transactionManager"/>
beans>

config.properties：


driver=com.mysql.cj.jdbc.Driver
url=jdbc:mysql://127.0.0.1:3306/数据库名?serverTimezone=Asia/Shanghai
uname=账号 //不能写成username，可能会调用系统上的username，结果报错
pwd=密码

8.集成mybatis

将数据库db.xml添加到spring-mybatis.xml中，spring-mybatis.xml添加到spring.xml进行全局扫描


"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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        http://www.springframework.org/schema/context/spring-context.xsd
        http://www.springframework.org/schema/aop
        http://www.springframework.org/schema/aop/spring-aop.xsd">
    
    <import resource="classpath:db.xml">import>
 
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
   
        <property name="dataSource" ref="dataSource">property>
  
        <property name="configLocation" value="classpath:mybatis-config.xml">property>
   
        <property name="mapperLocations" value="classpath:mappers/*Mappers.xml">
        property>
    bean>
    <bean id="mapperFactory"
          class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <property name="basePackage" value="com.ffyc.ssm.dao">property>
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory">
        property>
    bean>
 
beans>

9.导入 SpringWeb Jar包


<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>5.2.2.RELEASEversion>
dependency>

10.在 web.xml 文件中配置 DispatcherServlet


    <servlet>
        <servlet-name>applicationservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            <param-value>classpath:spring.xmlparam-value>
        init-param>
        <load-on-startup>0load-on-startup>
    servlet>
    
    <servlet-mapping>
        <servlet-name>applicationservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>

11.开启 SpringMVC 注解

新建一个xml文件，在spring.xml统一进行解析


 
    <mvc:annotation-driven>mvc:annotation-driven>

12.配置过滤器


<filter>
<filter-name>characterEncodingFilterfilter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilterfilter-class>
<init-param>
<param-name>encodingparam-name>
<param-value>UTF-8param-value>
init-param>
filter>
<filter-mapping>
<filter-name>characterEncodingFilterfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>

13.添加 gson jar 包（json数据）


<dependency>
<groupId>com.google.code.gsongroupId>
<artifactId>gsonartifactId>
<version>2.8.6version>
dependency>

14.配置关于jackson Jar包


<dependency>
            <groupId>com.fasterxml.jackson.coregroupId>
            <artifactId>jackson-databindartifactId>
            <version>2.13.3version>
        dependency>

15.添加过滤器 Jar包


<dependency>
<groupId>com.thetransactioncompanygroupId>
<artifactId>cors-filterartifactId>
<version>2.5version>
dependency>

16.在 web.xml 中配置过滤器


<filter>
<filter-name>CORSfilter-name>
<filter-class>com.thetransactioncompany.cors.CORSFilterfilter-class>
filter>
<filter-mapping>
<filter-name>CORSfilter-name>
<url-pattern>/*url-pattern>
filter-mapping>

17.注册拦截器


<mvc:interceptors>
<mvc:interceptor>
<mvc:mapping path="/**"/>
<mvc:exclude-mapping path="/statics/**"/>
<mvc:exclude-mapping path="/loginCtl/checklogin"/>
<bean id="demo" class="com.ff.springMVC.util.DemoInterceptor">bean>
mvc:interceptor>
mvc:interceptors>

18.添加拦截器所需要的Jar包


<dependency>
<groupId>commons-fileuploadgroupId>
<artifactId>commons-fileuploadartifactId>
<version>1.3.3version>
dependency>

19.添加拦截器文件解析器


文件解析器
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<property name="defaultEncoding" value="utf-8">property>
<property name="maxUploadSize" value="10485760">property>
bean>

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原文地址：https://blog.csdn.net/dfdbb6b/article/details/128174352