Maven+SSM框架搭建中(二)
思路:
- 配置maven環境;
- 設定maven的本地倉庫,遠端倉庫(即中央倉庫);
- 建立一個完整的maven專案 ;
- 導包,即配置pom.xml ;
- 新增框架整合的配置檔案到src/main/resources下 ;
- 配置web.xml:主要是配置 編碼過濾器,監聽器,讀取配置檔案.
- 然後再配置一下專案的jdk環境
- log4j.properties
- mybatis-config.xml
- spring-mvc.xml
- spring-mybatis.xml
千里之行,始於跬步。搭架子之前先配置下專案的執行環境。
第一步和第二步主要是搭建maven環境,這個在上一章有介紹。配置完成後,進行下一步。
3.1 然後就是建立一個完整的maven專案。
開啟eclipse,
右鍵 New > Project > Maven Project > Next > Next >
> Next
> Finish
3.2 可以看到專案基本搭建完成,但這個時候的專案結構可能還存在些問題,一個標準的maven專案Java Resources下包含src/main/resources和src/test/java和src/main/java ,而創建出來的包只有src/main/resources,這裡需要自己手動建立。(如果專案包含以上三個包可以跳過3.2直接到3.3)
解決方法這裡介紹兩種:
第一種比較簡單:https://blog.csdn.net/qq_29410905/article/details/80117436 去看看
第二種麻煩些:
右鍵專案 > Build Path > Configure Build Path > Source 可以看到另外兩個包資源丟失,這裡刪除再建立它們。
Add Folder > Create New Folder 建立剛剛刪掉的包src/main/java和src/test/java >Finish > Apply > OK,這個時候就可以看到目錄就比較完整了。
3.3 可以看到專案名的位置在報錯,原因是工具生成的index.jsp頁面不夠完整,可以直接刪掉。這個時候可以看到專案不報錯了。
4.1 然後就是導包,通過pom.xml 導包,這裡直接附上原始碼,基本上都相同,刪減包看專案需求。
<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版本號 -->
<spring.version>4.3.3.RELEASE</spring.version>
<!-- <spring.version>4.0.2.RELEASE</spring.version> -->
<!-- mybatis版本號 -->
<mybatis.version>3.2.6</mybatis.version>
<!-- log4j日誌檔案管理包版本 -->
<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>
<!-- 表示開發的時候引入,釋出的時候不會載入此包 -->
<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>
<!-- 匯入java ee jar 包 -->
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>7.0</version>
</dependency>
<!-- 匯入Mysql資料庫連結jar包 Start -->
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.30</version>
</dependency>
<!-- 匯入dbcp的jar包,用來在applicationContext.xml中配置資料庫 -->
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.2.2</version>
</dependency>
<!--資料庫包 End -->
<!-- JSTL標籤類 -->
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- 日誌檔案管理包 log Start -->
<!-- log start -->
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>${log4j.version}</version>
</dependency>
<!-- 格式化物件,方便輸出日誌 -->
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.1.41</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${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 -->
<!-- 上傳元件包 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>
<!-- 上傳元件包 End -->
<!--mybatis分頁外掛 -->
<dependency>
<groupId>com.github.pagehelper</groupId>
<artifactId>pagehelper</artifactId>
<version>4.0.0</version>
</dependency>
<!-- Start:excel批量匯入 -->
<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批量匯入 -->
</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 將配置檔案新增到src/main/resources下
配置檔案:log4j.properties的內容
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 配置檔案:mybatis-config.xml的內容
<?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檔案 <properties resource="db.properties"> <property name="driver"
value="oracle.jdbc.driver.OracleDriver"/> </properties> -->
<!-- 開啟延遲載入 -->
<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 配置檔案:spring-mvc.xml的內容
<?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">
<!-- 告訴spring註冊幾個預設的bean,用來處理@requestmapping及處理請求的介面卡-->
<mvc:annotation-driven/>
<!-- 自動掃描該包,使SpringMVC認為包下用了@controller註解的類是控制器 (註冊@Component,@Controller,@Service,@Repository等註解標記的元件)-->
<context:component-scan base-package="com.znkj.controller" />
<!--避免IE執行AJAX時,返回JSON出現下載檔案 -->
<bean id="mappingJacksonHttpMessageConverter"
class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>text/html;charset=UTF-8</value>
</list>
</property>
</bean>
<!-- 啟動SpringMVC的註解功能,完成請求和註解POJO的對映 -->
<bean
class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="mappingJacksonHttpMessageConverter" /> <!-- JSON轉換器 -->
</list>
</property>
</bean>
<!-- 定義跳轉的檔案的前後綴 ,檢視模式配置-->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<!-- 這裡的配置我的理解是自動給後面action的方法return的字串加上字首和字尾,變成一個 可用的url地址 -->
<property name="prefix" value="/" /> <!-- /WEB-INF/jsp/ -->
<property name="suffix" value=".html" />
</bean>
<!-- 配置檔案上傳,如果沒有使用檔案上傳可以不用配置,當然如果不配,那麼配置檔案中也不必引入上傳元件包 -->
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 預設編碼 -->
<property name="defaultEncoding" value="utf-8" />
<!-- 檔案大小最大值 -->
<property name="maxUploadSize" value="10485760000" />
<!-- 記憶體中的最大值 -->
<property name="maxInMemorySize" value="40960" />
</bean>
</beans>
5.4 配置檔案:spring-mybatis.xml的內容
<?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">
<!-- 自動掃描 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&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的配置對映檔案 -->
<bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<!-- 載入 mybatis-config.xml檔案-->
<property name="configLocation" value="classpath:mybatis-config.xml"></property>
<!-- 自動掃描*.xml檔案 -->
<property name="mapperLocations" value="classpath:com/znkj/mapper/*.xml"></property>
</bean>
<!-- DAO介面所在包名,Spring會自動查詢其下的類 -->
<bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
<property name="basePackage" value="com.znkj.dao" />
<property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"></property>
</bean>
<!-- (事務管理)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 最後配置一下:web.xml的內容
<?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>
<!-- 配置編碼過濾器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>
<!-- 配置編碼過濾器End -->
<!-- 如果同一個bean被定義兩次,後面一個優先 -->
<!-- classpath*與classpath的區別:前者遍歷所有的classpath載入所有符合條件的資源(效率較差),後者只會去找第一個符合條件的資源(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>
<!-- 此監聽器主要用於解決java.beans.Introspector導致的記憶體洩漏的問題,回收JavaBean中的快取垃圾,防止記憶體變大。預設可以不配 -->
<!-- 此監聽器應該配置在web.xml中與Spring相關監聽器中的第一個位置(也要在ContextLoaderListener的前面)-->
<listener>
<listener-class>org.springframework.web.util.IntrospectorCleanupListener</listener-class>
</listener>
<!-- 啟動spring容器用,容器用於管理Bean-->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- DispatcherServlet 針對MVC上下文載入,即攔截請求,分發請求給Controller -->
<!-- load-on-startup 標記容器是否在啟動的時候就載入這個servlet, >=0時啟動,其他情況被選擇才啟動,相當於懶載入和餓漢模式 -->
<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>
<!-- 解決樣式資源丟失問題 -->
<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><!-- 頁面不顯示圖片,格式不允許 -->
</servlet-mapping>
<listener>
<listener-class>org.springframework.web.util.Log4jConfigListener</listener-class>
</listener>
</web-app>
配置基本完成,要修改的就是連線資料庫的資訊。下面再配置一下專案的jdk環境。
右鍵專案 > Build Path > Configure Build Path > Libraries >
>Edit
>Finish >
>Apply > Java Compiler >
> Apply > 彈出的視窗選擇Yes > Project Facets
右鍵專案 > Maven > Update Project >OK
這個時候看一下Window > Show View > Markers 報錯
解決方式: 開啟專案所在路徑 .settings資料夾下的
修改為
<?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>
右鍵專案 > Maven > Update Project >OK
等專案更新完畢基本OJK ,這個時候再看一下Markers報錯
沒有報錯,配置完成。這個時候已經配置完成,但是Tomcat執行專案會報錯,原因是專案啟動會去掃描mapper包,而咱們mapper包下什麼也沒有,可以看到控制檯報錯
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,走到這裡報這個錯就要恭喜你了,配置完成。下面就是給專案新增功能程式碼,具體下個章節介紹。