maven项目配置（以及引入SSM框架的相关jar包）
一．Maven配置
1.maven框架的settings.xml文件配置
2.maven框架的pom.xml文件配置
2-1maven-compiler-plugin 配置
maven-compiler-plugin配置的作用
1.maven是项目管理工具，如果我们代码使用的JDK版本不告诉maven，则maven会使用默认的JDK版本，这样可能默认的JDK版本与我们使用的版本不一致会造成版本冲突，导致maven项目的代码编译失败
<plugins>
<plugin
<groupId>org.apache.maven.pluginsgroupId>
<artifactId>maven-compiler-pluginartifactId>
<version>3.7.0version>
<configuration>
<source>1.8source>
<target>1.8target>
<encoding>UTF8encoding>
configuration>
plugin>
plugins>
2-2引入项目所需要的jar包
2-2-1引入spring相关jar包
一、
<properties>
<spring.version>5.0.1.RELEASEspring.version>
properties>
二、
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-coreartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-beansartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-contextartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-jdbcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-txartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-webmvcartifactId>
<version>${spring.version}version>
dependency>
<dependency>
<groupId>org.springframeworkgroupId>
<artifactId>spring-testartifactId>
<version>${spring.version}version>
<scope>testscope>
dependency>
2-2-2引入servlet web、jackson、commons相关jar包
2.2.2.1servlet web相关jar包
<dependency>
<groupId>javax.servletgroupId>
<artifactId>javax.servlet-apiartifactId>
<version>4.0.0version>
<scope>providedscope>
dependency>
2.2.2.2Jackson相关jar包
<dependency>
<groupId>com.fasterxml.jackson.coregroupId>
<artifactId>jackson-databindartifactId>
<version>2.9.2version>
dependency>
2.2.2.3Commons相关jar包
<dependency>
<groupId>commons-collectionsgroupId>
<artifactId>commons-collectionsartifactId>
<version>3.2.2version>
dependency>
2-2-3引入mybatis相关jar包
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatisartifactId>
<version>3.4.5version>
dependency>
<dependency>
<groupId>org.mybatisgroupId>
<artifactId>mybatis-springartifactId>
<version>1.3.1version>
dependency>
2-2-4引入数据库相关jar包
<dependency>
<groupId>mysqlgroupId>
<artifactId>mysql-connector-javaartifactId>
<version>6.0.6version>
dependency>
<dependency>
<groupId>c3p0groupId>
<artifactId>c3p0artifactId>
<version>0.9.2version>
dependency>
3.web.xml配置
3-1更改web版本步骤
3-1-1Web版本3.1头部声明
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"xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1" metadata-complete="true">
<display-name>Archetype Created Web Applicationdisplay-name>
web-app>
<welcome-file-list>
<welcome-file>index.jspwelcome-file>
welcome-file-list>
3-2将spring配置文件进行整合
<servlet>
<servlet-name>spring-dispatcherservlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
<init-param>
<param-name>contextConfigLocationparam-name>
<param-value>classpath:spring/spring-*.xmlparam-value>
init-param>
servlet>
<servlet-mapping>
<servlet-name>spring-dispatcherservlet-name>
<url-pattern>/url-pattern>
servlet-mapping>
4. 数据库连接文件jdbc.properties
jdbc.driver=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/o2o?useUnicode=true&characterEncoding=utf8
jdbc.username=数据库用户名
jdbc.password=数据库密码
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