Maven+SSM框架搭建中(二)

    思路:

  1.     配置maven环境;
  2.     设置maven的本地仓库,远程仓库(即中央仓库);
  3.     创建一个完整的maven项目 ;
  4.     导包,即配置pom.xml ;
  5.     添加框架整合的配置文件到src/main/resources下 ;
  6.     配置web.xml:主要是配置 编码过滤器,监听器,读取配置文件.
  7.     然后再配置一下项目的jdk环境
  • log4j.properties
  • mybatis-config.xml
  • spring-mvc.xml
  • spring-mybatis.xml


    千里之行,始于跬步。搭架子之前先配置下项目的运行环境。

    

   

      第一步和第二步主要是搭建maven环境,这个在上一章有介绍。配置完成后,进行下一步。

    3.1 然后就是创建一个完整的maven项目。

          打开eclipse,

            右键 New  > Project > Maven Project > Next > Next >

            

>  Next  


>   Finish

    3.2  可以看到项目基本搭建完成,但这个时候的项目结构可能还存在些问题,一个标准的maven项目Java Resources下包含src/main/resources和src/test/java和src/main/java ,而创建出来的包只有src/main/resources,这里需要自己手动创建。(如果项目包含以上三个包可以跳过3.2直接到3.3)

解决方法这里介绍两种:

第一种比较简单:https://blog.youkuaiyun.com/qq_29410905/article/details/80117436  去看看

第二种麻烦些: 

右键项目 > Build Path > Configure Build Path > Source 可以看到另外两个包资源丢失,这里删除再创建它们。


Add Folder  > Create New Folder 创建刚刚删掉的包src/main/java和src/test/java >Finish > Apply > OK,这个时候就可以看到目录就比较完整了。

    3.3 可以看到项目名的位置在报错,原因是工具生成的index.jsp页面不够完整,可以直接删掉。这个时候可以看到项目不报错了。

    4.1 然后就是导包,通过pom.xml 导包,这里直接附上源码,基本上都相同,删减包看项目需求。

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>com.znkj</groupId>
  <artifactId>Template</artifactId>
  <packaging>war</packaging>
  <version>0.0.1-SNAPSHOT</version>
  <name>Template Maven Webapp</name>
  <url>http://maven.apache.org</url>
  
  <properties>
		<!-- spring版本号 -->
		<spring.version>4.3.3.RELEASE</spring.version>
	<!-- 	<spring.version>4.0.2.RELEASE</spring.version> -->
		<!-- mybatis版本号 -->
		<mybatis.version>3.2.6</mybatis.version>
		<!-- log4j日志文件管理包版本 -->
		<slf4j.version>1.7.7</slf4j.version>
		<log4j.version>1.2.17</log4j.version>
	</properties>
	<dependencies>

		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
		</dependency>



		<dependency>
			<groupId>junit</groupId>
			<artifactId>junit</artifactId>
			<version>4.12</version>
			<!-- 表示开发的时候引入,发布的时候不会加载此包 -->
			<scope>test</scope>
		</dependency>
		<!-- spring核心包 -->
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-core</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-web</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-oxm</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-tx</artifactId>
			<version>${spring.version}</version>
		</dependency>

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

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-webmvc</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-context-support</artifactId>
			<version>${spring.version}</version>
		</dependency>

		<dependency>
			<groupId>org.springframework</groupId>
			<artifactId>spring-test</artifactId>
			<version>${spring.version}</version>
		</dependency>
		<!-- mybatis核心包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis</artifactId>
			<version>${mybatis.version}</version>
		</dependency>
		<!-- mybatis/spring包 -->
		<dependency>
			<groupId>org.mybatis</groupId>
			<artifactId>mybatis-spring</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!-- 导入java ee jar 包 -->
		<dependency>
			<groupId>javax</groupId>
			<artifactId>javaee-api</artifactId>
			<version>7.0</version>
		</dependency>
		<!-- 导入Mysql数据库链接jar包 Start -->
		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<version>5.1.30</version>
		</dependency>
		<!-- 导入dbcp的jar包,用来在applicationContext.xml中配置数据库 -->
		<dependency>
			<groupId>commons-dbcp</groupId>
			<artifactId>commons-dbcp</artifactId>
			<version>1.2.2</version>
		</dependency>
		<!--数据库包 End -->

		<!-- JSTL标签类 -->
		<dependency>
			<groupId>jstl</groupId>
			<artifactId>jstl</artifactId>
			<version>1.2</version>
		</dependency>

		<!-- 日志文件管理包 log Start -->
		<!-- log start -->
		<dependency>
			<groupId>log4j</groupId>
			<artifactId>log4j</artifactId>
			<version>${log4j.version}</version>
		</dependency>
		<!-- 格式化对象,方便输出日志 -->
		<dependency>
			<groupId>com.alibaba</groupId>
			<artifactId>fastjson</artifactId>
			<version>1.1.41</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-log4j12</artifactId>
			<version>${slf4j.version}</version>
		</dependency>
		<!-- log End -->

		<!-- 映入JSON Start -->
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.7.5</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-annotations</artifactId>
			<version>2.7.5</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.7.5</version>
		</dependency>

		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.9.4</version>
		</dependency>

		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-asl</artifactId>
			<version>1.9.4</version>
		</dependency>
		<!-- json END -->

		<!-- 上传组件包 Start -->
		<dependency>
			<groupId>commons-fileupload</groupId>
			<artifactId>commons-fileupload</artifactId>
			<version>1.3.1</version>
		</dependency>
		<dependency>
			<groupId>commons-io</groupId>
			<artifactId>commons-io</artifactId>
			<version>2.4</version>
		</dependency>
		<dependency>
			<groupId>commons-codec</groupId>
			<artifactId>commons-codec</artifactId>
			<version>1.9</version>
		</dependency>
		<dependency>
			<groupId>commons-httpclient</groupId>
			<artifactId>commons-httpclient</artifactId>
			<version>3.0</version>
		</dependency>
		<dependency>
			<groupId>commons-logging</groupId>
			<artifactId>commons-logging</artifactId>
			<version>1.1.1</version>
		</dependency>
		<!-- 上传组件包 End -->

		<!--mybatis分页插件 -->

		<dependency>
			<groupId>com.github.pagehelper</groupId>
			<artifactId>pagehelper</artifactId>
			<version>4.0.0</version>
		</dependency>
		<!-- Start:excel批量导入 -->
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi</artifactId>
			<version>3.15</version>
		</dependency>
		
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
			<version>3.15</version>
		</dependency>
		<!-- End:excel批量导入 -->
	</dependencies>
  
  <build>
    <finalName>Template</finalName>
    <plugins>
			<!-- define the project compile level -->
			<plugin>
				<groupId>org.apache.maven.plugins</groupId>
				<artifactId>maven-compiler-plugin</artifactId>
				<version>2.3.2</version>
				<configuration>
					<source>1.8</source>
					<target>1.8</target>
					<failOnMissingWebXml>true</failOnMissingWebXml>
				</configuration>
			</plugin>
		</plugins>
  </build>
</project>

       5.1  将配置文件添加到src/main/resources下

        配置文件:log4j.properties的内容

log4j.rootLogger=INFO,Console,File
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n
log4j.appender.File = org.apache.log4j.RollingFileAppender
log4j.appender.File.File = logs/ssm.log
log4j.appender.File.MaxFileSize = 10MB
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

   5.2  配置文件:mybatis-config.xml的内容

<?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>
	<!-- 引入db.properties文件 <properties resource="db.properties"> <property name="driver" 
		value="oracle.jdbc.driver.OracleDriver"/> </properties> -->
	<!-- 开启延迟加载 -->
	<settings>
		<setting name="lazyLoadingEnabled" value="true" />
		<setting name="aggressiveLazyLoading" value="false" />
	</settings>
	<plugins>
		<plugin interceptor="com.github.pagehelper.PageHelper">
			<property name="dialect" value="mysql" />
			<property name="offsetAsPageNum" value="true" />
			<property name="rowBoundsWithCount" value="true" />
			<property name="pageSizeZero" value="true" />
			<property name="reasonable" value="false" />
			<property name="params" value="pageNum=start;pageSize=limit;" />
			<property name="returnPageInfo" value="check" />
		</plugin>
	</plugins>
</configuration>

        5.3     配置文件:spring-mvc.xml的内容

<?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"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans    
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd    
                        http://www.springframework.org/schema/context    
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd    
                        http://www.springframework.org/schema/mvc    
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
    <!-- 告诉spring注册几个默认的bean,用来处理@requestmapping及处理请求的适配器-->
    <mvc:annotation-driven/>
    <!-- 自动扫描该包,使SpringMVC认为包下用了@controller注解的类是控制器 (注册@Component,@Controller,@Service,@Repository等注解标记的组件)-->  
    <context:component-scan base-package="com.znkj.controller" />  
    <!--避免IE执行AJAX时,返回JSON出现下载文件 -->  
    <bean id="mappingJacksonHttpMessageConverter"  
        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">  
        <property name="supportedMediaTypes">  
            <list>  
                <value>text/html;charset=UTF-8</value>  
            </list>  
        </property>  
    </bean>  
    <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 -->  
    <bean  
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">  
        <property name="messageConverters">  
            <list>  
                <ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON转换器 -->  
            </list>  
        </property>  
    </bean>  
    <!-- 定义跳转的文件的前后缀 ,视图模式配置-->  
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">  
        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 -->  
        <property name="prefix" value="/" />  <!-- /WEB-INF/jsp/ -->
        <property name="suffix" value=".html" />  
    </bean>  
     	
      
    <!-- 配置文件上传,如果没有使用文件上传可以不用配置,当然如果不配,那么配置文件中也不必引入上传组件包 -->  
    <bean id="multipartResolver"    
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">    
        <!-- 默认编码 -->  
        <property name="defaultEncoding" value="utf-8" />    
        <!-- 文件大小最大值 -->  
        <property name="maxUploadSize" value="10485760000" />    
        <!-- 内存中的最大值 -->  
        <property name="maxInMemorySize" value="40960" />    
    </bean>   
  
</beans>

        5.4 配置文件:spring-mybatis.xml的内容

<?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"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans    
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd    
                        http://www.springframework.org/schema/context    
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd    
                        http://www.springframework.org/schema/mvc    
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">  
    <!-- 自动扫描 com.znkj.dao,com.znkj.service-->  
    <context:component-scan base-package="com.znkj"/>   
  
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"  
        destroy-method="close">  
        <property name="driverClassName" value="com.mysql.jdbc.Driver" />  
        <property name="url" value="jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=UTF-8"/>  
        <property name="username" value="root"/>  
        <property name="password" value="root"/>  
    </bean> 
    
  
    <!-- spring和MyBatis完美整合,不需要mybatis的配置映射文件 -->  
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">  
        <property name="dataSource" ref="dataSource" />  
        <!-- 加载 mybatis-config.xml文件-->
     <property name="configLocation" value="classpath:mybatis-config.xml"></property>
        <!-- 自动扫描*.xml文件 -->  
        <property name="mapperLocations" value="classpath:com/znkj/mapper/*.xml"></property>  
    </bean>  
  
    <!-- DAO接口所在包名,Spring会自动查找其下的类 -->  
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">  
        <property name="basePackage" value="com.znkj.dao" />  
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>  
    </bean>  
  
    <!-- (事务管理)transaction manager, use JtaTransactionManager for global tx -->  
    <bean id="transactionManager"  
        class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  
        <property name="dataSource" ref="dataSource" />  
    </bean>  
  	
</beans>  

        5.5 最后配置一下:web.xml的内容

<?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_3_0.xsd"
	version="3.0">
  <display-name>Archetype Created Web Application</display-name>
  
  <!-- 配置编码过滤器Start -->
	<filter>
		<!-- url-pattern的值可以是/也可以是/* -->
		<filter-name>encodingFilter</filter-name>
		<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
		<async-supported>true</async-supported>
		<init-param>
			<param-name>encoding</param-name>
			<param-value>UTF-8</param-value>
		</init-param>
	</filter>
	<filter-mapping>
		<filter-name>encodingFilter</filter-name>
		<url-pattern>/*</url-pattern>
	</filter-mapping>
	<!-- 配置编码过滤器End -->
	
	<!-- 如果同一个bean被定义两次,后面一个优先 -->
	<!-- classpath*与classpath的区别:前者遍历所有的classpath加载所有符合条件的资源(效率较差),后者只会去找第一个符合条件的资源(避免重名) -->
	<context-param>
		<description></description>
		<param-name>contextConfigLocation</param-name>
		<!-- <param-value>classpath*:spring-*.xml</param-value> -->
		<param-value>
			classpath:spring-mybatis.xml
		</param-value>
	</context-param>
	
	<!-- 此监听器主要用于解决java.beans.Introspector导致的内存泄漏的问题,回收JavaBean中的缓存垃圾,防止内存变大。默认可以不配 -->
	<!-- 此监听器应该配置在web.xml中与Spring相关监听器中的第一个位置(也要在ContextLoaderListener的前面)-->
	<listener>
		<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
	</listener>
	<!-- 启动spring容器用,容器用于管理Bean-->  
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
	
	<!-- DispatcherServlet 针对MVC上下文加载,即拦截请求,分发请求给Controller --> 
	<!-- load-on-startup 标记容器是否在启动的时候就加载这个servlet, >=0时启动,其他情况被选择才启动,相当于懒加载和饿汉模式 -->
	<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-mvc.xml</param-value>
		</init-param>
		<load-on-startup>1</load-on-startup>
		<async-supported>true</async-supported>
	</servlet>
	
	<servlet-mapping>
		<servlet-name>SpringMVC</servlet-name>
		<url-pattern>/</url-pattern>
	</servlet-mapping>
	
	<!-- 解决样式资源丢失问题 -->
	<servlet-mapping>
		<servlet-name>default</servlet-name>
		<url-pattern>*.jpg</url-pattern>
		<url-pattern>*.js</url-pattern>
		<url-pattern>*.css</url-pattern>
		<url-pattern>*.png</url-pattern>
		<url-pattern>*.gif</url-pattern>
		<url-pattern>*.json</url-pattern>
		<url-pattern>*.html</url-pattern>
		<url-pattern>*.htm</url-pattern>
		<url-pattern>*.swf</url-pattern>
		<url-pattern>*.eot</url-pattern>
		<url-pattern>*.svg</url-pattern>
		<url-pattern>*.ttf</url-pattern>
		<url-pattern>*.woff</url-pattern>
		<url-pattern>*.woff2</url-pattern>
		<url-pattern>*.jpeg</url-pattern><!-- 页面不显示图片,格式不允许 -->
	</servlet-mapping>

	<listener>  
    <listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
	</listener>
</web-app>


        配置基本完成,要修改的就是连接数据库的信息。下面再配置一下项目的jdk环境。

        右键项目 > Build Path > Configure Build Path > Libraries > 

        

            >Edit

            

            >Finish > 

            

            >Apply > Java Compiler > 

             

                > Apply > 弹出的窗口选择Yes > Project Facets

                  

                

                右键项目 > Maven > Update Project >OK

                这个时候看一下Window > Show View > Markers 报错 

     

            解决方式: 打开项目所在路径 .settings文件夹下的


修改为

<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
  <fixed facet="wst.jsdt.web"/>
  <installed facet="jst.web" version="3.0"/>
  <installed facet="wst.jsdt.web" version="1.0"/>
  <installed facet="java" version="1.8"/>

</faceted-project>

                右键项目 > Maven > Update Project >OK

                等项目更新完毕基本OJK ,这个时候再看一下Markers报错

                

        没有报错,配置完成。这个时候已经配置完成,但是Tomcat运行项目会报错,原因是项目启动会去扫描mapper包,而咱们mapper包下什么也没有,可以看到控制台报错

Could not resolve resource location pattern [classpath:com/znkj/mapper/*.xml]: class path resource [com/znkj/mapper/] cannot be resolved to URL because it does not exist

        很正常,走到这里报这个错就要恭喜你了,配置完成。下面就是给项目添加功能代码,具体下个章节介绍。


    

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