Maven項目下spring3 ,struts2整合入門。 java
spring 3 的配置文件,名稱spring.xml 內容以下: web
<?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:p="http://www.springframework.org/schema/p" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd"> <context:component-scan base-package="com.mario.server.imp" /> </beans>
入門的內容因此刨除了令新手看不懂的屬性 ,context:component-scan 是自動包掃描 base-package是要掃描的包名字。這裏使用注入的方式,不然要寫bean,可是一旦這個包中bean 不少的時候掃描法會影響性能,bean的寫法就不說了,指定id,class什麼的你懂的。 spring
下一步須要導入spring 3所須要的包3.2版本(最後的pom.xml中有),若是缺包,在編譯時每每提示classNotfound根據那個類名,根據缺的類能夠在網上找類對應的jar包導入便可。 express
以後寫類 ,這裏個人類是UserServer,代碼以下: apache
import org.apache.log4j.Logger; import org.springframework.stereotype.Service; import com.mario.serverI.UserServerI; @Service("userServer") public class UserServerImp implements UserServerI{ /** * Logger for this class */ private static final Logger logger = Logger.getLogger(UserServerImp.class); @Override public void test() { // TODO Auto-generated method stub logger.info("mssage from UserServer"); } }
這裏注意下 @Service這個註解,這個是注入中不可缺乏的,裏面的名字何時用?往下看。。。。 api
寫一個junit測試類,用來測試spring是否配置好。測試代碼以下,@test這個註解須要導入junit包: app
import org.junit.Test; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; import com.mario.server.imp.UserServerImp; public class mytest { /** * Logger for this class */ private static final Logger logger = Logger.getLogger(mytest.class); @Test public void test(){ ApplicationContext ac=new ClassPathXmlApplicationContext(new String[]{"classpath:spring.xml"}); UserServerImp us= (UserServerImp) ac.getBean("userServer"); us.test(); } }
applicationContext對象用來獲取spring 的context ,以後經過context的getBean方法獲取UserService對象,getBean的參數userServer,就是UserServer類中@Server 裏面寫的那個userServer。 這裏它怎麼知道userServer就是UserServer中的註解並實例化UserServer類? 這是由於自動掃描包,在spring配置文件中指定了包含該類的包名,而後spring框架會掃描這個包中的類尋找@Server這個註解,若是有個值爲userServer的,spring就實例化了。 框架
測試代碼中能打印出test方法中的信息,spring 配置成功,在將其配置到web項目上,web.xml配置以下: dom
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name> <!-- spring 配置文件路徑 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring.xml</param-value> </context-param> <!-- spring 監聽器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
Spring3 配置就完事了,接下來加struts2。 jsp
第一步仍是加包這個略,後面pom.xml裏面有,三個包,struts2-core,struts2-convension-plugin,struts2-spring-plugin,加了這三個後maven會自動加其餘須要的包。
stuts2的配置文件:
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.3//EN" "http://struts.apache.org/dtds/struts-2.3.dtd"> <struts> <!-- struts2的action必須放在一個指定的包空間下定義 --> <package name="basePackage" extends="struts-default"></package> </struts>
package name 包名,不用注入的方式寫的話就是在這個標籤下寫action ,指定class什麼的,你懂的,不懂的能夠百度下。這裏由於注入因此很乾淨。
接下來寫action類,代碼以下:
import com.mario.serverI.UserServerI; @ParentPackage("basePackage") @Namespace("/") @Action("userAction") public class UserAction { /** * Logger for this class */ private static final Logger logger = Logger.getLogger(UserAction.class); private UserServerI userServer; public UserServerI getUserServer() { return userServer; } @Autowired public void setUserServer(UserServerI userServer) { this.userServer = userServer; } public void test(){ logger.info("message from struts2"); userServer.test(); } }
注意@ParentPackage這個註解,這裏面的base-package 就是配置文件中的package-name 指定的,@NameSpace是名字空間,Maven項目中默認用「/」
@Action就是這個類的訪問時用的名字,好比:localhost:8080/項目名/userAction!test.action 中的userAction 。
在這個Action中引用了userServer這個類,但test放法中並無實例化該類,怎麼作到的? 首先定義userServer類的get,set 方法,以後在set方法上加@AutoWirte註解就能夠了,很方便吧?
以後再web.xml中配置struts2,加入後的配置文件以下:
<?xml version="1.0" encoding="UTF-8"?> <web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> <display-name></display-name> <!-- spring 配置文件路徑 --> <context-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:spring.xml</param-value> </context-param> <!-- struts2 過濾器 --> <filter> <filter-name>struts2</filter-name> <filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class> </filter> <filter-mapping> <filter-name>struts2</filter-name> <url-pattern>*.action</url-pattern> </filter-mapping> <!-- spring 監聽器 --> <listener> <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
加入了struts2的過濾器,filter 和filter-mapping。以後部署項目測試。localhost:8080/項目名/userAction!test.action。若是沒有問題會顯示空白,由於action中沒有result。
最後是Maven的pom.xml
<?xml version="1.0"?> <project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd" xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"> <modelVersion>4.0.0</modelVersion> <groupId>myWebProJect</groupId> <artifactId>myWebProJect</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name></name> <description></description> <properties> <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> </properties> <dependencies> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> <scope>provided</scope> </dependency> <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.1</version> <scope>provided</scope> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.annotation</artifactId> <version>3.0.1</version> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.ejb</artifactId> <version>3.0.1</version> </dependency> <dependency> <groupId>org.jboss.weld</groupId> <artifactId>weld-osgi-bundle</artifactId> <version>1.0.1-SP3</version> </dependency> <dependency> <groupId>org.glassfish</groupId> <artifactId>javax.servlet</artifactId> <version>3.0.1</version> </dependency> <dependency> <groupId>antlr</groupId> <artifactId>antlr</artifactId> <version>2.7.7</version> </dependency> <dependency> <groupId>org.slf4j</groupId> <artifactId>slf4j-api</artifactId> <version>1.6.1</version> </dependency> <dependency> <groupId>dom4j</groupId> <artifactId>dom4j</artifactId> <version>1.6.1</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-core</artifactId> <version>4.1.4.Final</version> </dependency> <dependency> <groupId>org.hibernate.common</groupId> <artifactId>hibernate-commons-annotations</artifactId> <version>4.0.1.Final</version> </dependency> <dependency> <groupId>org.hibernate.javax.persistence</groupId> <artifactId>hibernate-jpa-2.0-api</artifactId> <version>1.0.1.Final</version> </dependency> <dependency> <groupId>org.javassist</groupId> <artifactId>javassist</artifactId> <version>3.15.0-GA</version> </dependency> <dependency> <groupId>org.jboss.logging</groupId> <artifactId>jboss-logging</artifactId> <version>3.1.0.GA</version> </dependency> <dependency> <groupId>org.jboss.spec.javax.transaction</groupId> <artifactId>jboss-transaction-api_1.1_spec</artifactId> <version>1.0.0.Final</version> </dependency> <dependency> <groupId>org.hibernate</groupId> <artifactId>hibernate-entitymanager</artifactId> <version>4.1.4.Final</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-core</artifactId> <version>3.2.3.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-web</artifactId> <version>3.2.3.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-context</artifactId> <version>3.2.3.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-beans</artifactId> <version>3.2.3.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-expression</artifactId> <version>3.2.3.RELEASE</version> </dependency> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-orm</artifactId> <version>3.2.3.RELEASE</version> </dependency> <dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.11</version> <scope/> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-core</artifactId> <version>2.3.15.1</version> </dependency> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-spring-plugin</artifactId> <version>2.3.15.1</version> </dependency> <dependency> <groupId>org.apache.struts</groupId> <artifactId>struts2-convention-plugin</artifactId> <version>2.3.15.1</version> </dependency> </dependencies> <build> <plugins> <plugin> <artifactId>maven-war-plugin</artifactId> </plugin> <plugin> <artifactId>maven-compiler-plugin</artifactId> <configuration> <source>1.6</source> <target>1.6</target> </configuration> </plugin> </plugins> </build> </project>