Maven+Struts2+spring初尝试

一、Struts2的配置

见上文：Struts2的应用

二、整合spring

这里主要使用spring的控制反转注入，来管理bean。奖action的对应bean都由spring来注入管理。

1、项目目录

这里依旧采用maven来管理项目

2、maven的pox.xml配置文件，引入对应所需的jar包

 1 <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 2   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
 3   <modelVersion>4.0.0</modelVersion>
 4   <groupId>com.mdf</groupId>
 5   <artifactId>Struts2Demo</artifactId>
 6   <packaging>war</packaging>
 7   <version>0.0.1-SNAPSHOT</version>
 8   <name>Struts2Demo Maven Webapp</name>
 9   <url>http://maven.apache.org</url>
10   <dependencies>
11     <dependency>
12       <groupId>junit</groupId>
13       <artifactId>junit</artifactId>
14       <version>3.8.1</version>
15       <scope>test</scope>
16     </dependency>
17     <!-- 使用maven 引入 struts2 jar包 -->
18     <dependency>
19         <groupId>org.apache.struts</groupId>
20         <artifactId>struts2-core</artifactId>
21         <version>2.3.1.2</version>
22     </dependency>
23     <!-- 引入server-api包 -->
24     <dependency>
25         <groupId>javax.servlet</groupId>
26         <artifactId>javax.servlet-api</artifactId>
27         <version>3.0.1</version>
28     </dependency>
29     <!-- 引入spring核心jar包 -->
30     <dependency>
31         <groupId>org.springframework</groupId>
32         <artifactId>spring-context</artifactId>
33         <version>4.0.4.RELEASE</version>
34     </dependency>
35     <!-- 引入Struts2和Spring整合插件 -->
36     <dependency>
37         <groupId>org.apache.struts</groupId>
38         <artifactId>struts2-spring-plugin</artifactId>
39         <version>2.3.4.1</version>
40     </dependency>
41   </dependencies>
42   <build>
43     <finalName>Struts2Demo</finalName>
44   </build>
45 </project>

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3、web.xml配置文件

 1 <web-app>
 2     <display-name>Archetype Created Web Application</display-name>
 3     <!-- Struts2过滤器 -->
 4     <filter>
 5         <filter-name>struts2</filter-name>
 6         <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>
 7     </filter>
 8     <filter-mapping>
 9         <filter-name>struts2</filter-name>
10         <url-pattern>/*</url-pattern>
11     </filter-mapping>
12     
13     <!-- spring坚挺，配置文件目录 -->
14     <listener>
15         <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
16     </listener>
17     <context-param>
18         <param-name>contextConfigLocation</param-name>
19         <param-value>classpath:spring.xml</param-value>
20     </context-param>
21 </web-app>

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4、spring.xml（spring的配置文件）

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <beans xmlns ="http://www.springframework.org/schema/beans" 
 3     xmlns:xsi ="http://www.w3.org/2001/XMLSchema-instance" 
 4     xsi:schemaLocation ="http://www.springframework.org/schema/beans 
 5     http://www.springframework.org/schema/beans/spring-beans.xsd">
 6     
 7     <!-- 注入service -->
 8     <bean name="StudentService" class="com.mdf.service.impl.StudentServiceImpl"></bean>
 9     <!-- 注入action的类 -->
10     <bean id="StudentAction" class="com.mdf.action.StudentAction">
11         <!-- property注入的与action对应类中声明的需要一致 -->
12         <property name="studentservice">
13             <ref bean="StudentService"></ref>
14         </property>
15     </bean>
16 </beans>

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这里提个醒，在注入service和action的时候，需要对应action类中的实例化service名，我在这里吃了不少亏，一直报错。在注释中也标注了，大家需要注意。

这里将所有的bean的注入都在spring中控制了，之后Struts2中action控制的时候，class只需要引入spring中设置的对应action的bean名就行了。

5、struts.xml（Struts2的配置文件）

 1 <?xml version="1.0" encoding="UTF-8"?>
 2 <!DOCTYPE struts PUBLIC  
 3     "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"  
 4     "http://struts.apache.org/dtds/struts-2.0.dtd">
 5 
 6 <struts>
 7     <!-- 利用spring来初始化action的bean -->
 8     <constant name="struts.objectFactory" value="spring" />
 9 
10     <package name="Student" namespace="/student" extends="struts-default">
11         <action name="test" class="StudentAction">
12             <result name="success">/WEB-INF/context/success.jsp</result>
13             <result name="error">/WEB-INF/context/error.jsp</result>
14         </action>
15     </package>
16 </struts>

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6、对应测试的action、service类

action：

 1 package com.mdf.action;
 2 
 3 import com.mdf.bean.Student;
 4 import com.mdf.service.StudentService;
 5 import com.opensymphony.xwork2.Action;
 6 
 7 public class StudentAction implements Action {
 8 
 9     //这里需要与spring的配置文件中对应
10     private StudentService studentservice;
11     private Student student;
12     
13     public StudentService getStudentservice() {
14         return studentservice;
15     }
16 
17     public void setStudentservice(StudentService studentservice) {
18         this.studentservice = studentservice;
19     }
20 
21     public Student getStudent() {
22         return student;
23     }
24 
25     public void setStudent(Student student) {
26         this.student = student;
27     }
28 
29     public String execute(){
30         student=studentservice.getStudent();
31         if(student.getName()=="madifei"){
32             return "success";
33         }else{
34             return "error";
35         }
36     }
37 }

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service：

 1 package com.mdf.service.impl;
 2 
 3 import com.mdf.bean.Student;
 4 import com.mdf.service.StudentService;
 5 
 6 public class StudentServiceImpl implements StudentService {
 7 
 8     public Student getStudent() {
 9         // TODO Auto-generated method stub
10         Student returnValue=null;
11         
12         Student student=new Student();
13         student.setName("madifei");
14         student.setAge(28);
15         
16         returnValue=student;
17         
18         return returnValue;
19     }
20 
21 }

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三、感悟

这只是基础的spring+Struts2的整合应用吧，对于框架的了解还是甚少，虽然仔细百度了不少有关spring和Struts2的知识，对于原理还是有些一知半解。后期应用上要不断地去理解，不该只是能够挑出程序功能即可。