spring与struts2的整合
工程文件结构图:
1,创建名为loginSpringStruts2的web工程,具体机构如上图,在该工程的/WebRoot/WEB-INF/lib路径下添加struts2常用的JAR包(参见“struts2配置”),同时添加名为spring.jar, commons-loggin.jar(已经添加),cglib-nodep-2.1_3.jar(AOP用到),struts2-spring-plugin-2.0.11.jar等4个Spring运行库文件。
2,创建前台视图login.jsp success.jsp error.jsp, 具体参见(“struts2配置”
3,在src下创建applicationContext.xml,配置如下:
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<?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" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd"> <!-- 配置Struts2里的Action对象 --> <bean id="login" class="action.LoginAction"></bean> </beans>
4,在src下创建struts.properties消息文件,添加“struts.objectFactory=spring"语句,使得Struts2类的生成交给spring完成,具体代码:
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struts.objectFactory=spring
struts.action.extension=action
struts.locale=en_GB
5,在src下创建struts.xml, 具体配置如下:
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<?xml version="1.0" encoding="UTF-8" ?> <!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"> <struts> <package name="main" extends="struts-default"> <action name="login" class="action.LoginAction"> <result name="error">/error.jsp</result> <result name="success">/success.jsp</result> </action> </package> </struts>
相应的action.LoginAction代码如下:
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package action;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport {
private String userName;
private String userPsw;
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserPsw() {
return userPsw;
}
public void setUserPsw(String userPsw) {
this.userPsw = userPsw;
}
/**
* @return
*/
public String execute() {
if(getUserName().equals("123")&& getUserPsw().equals("123")){
return SUCCESS;
}
else return ERROR;
}
}
相应的filter.CharacterEncodingFilter.java的代码如下:
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package filter;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
public class CharacterEncodingFilter implements Filter {
private String characterEncoding;//编码方式在web.xml中
private boolean enabled;//是否启动filter,初始值在web.xml中
@Override
public void init(FilterConfig config) throws ServletException {
// TODO Auto-generated method stub
//初始化时加载参数
//从配置文件中读取设置到编码方式
characterEncoding=config.getInitParameter("characterEncoding");
//启动该过滤器完成编码方式到修改
enabled="true".equalsIgnoreCase(characterEncoding.trim())
||"1".equalsIgnoreCase(characterEncoding.trim());
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
// TODO Auto-generated method stub
if(enabled||characterEncoding!=null){
request.setCharacterEncoding(characterEncoding);//设置request编码方式
response.setCharacterEncoding(characterEncoding);//设置response编码方式
}
chain.doFilter(request, response);//doFilter将修改好的request和response参数向下传递;
}
@Override
public void destroy() {
// TODO Auto-generated method stub
characterEncoding=null;
}
}
6,配置web.xml,包括struts2监听,字符集过滤,spring的web监听,并通过<context-param>标签来配置applicationContext.xml文件的位置
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<?xml version="1.0" encoding="UTF-8"?> <web-app version="2.5" 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_2_5.xsd"> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> <!-- struts2过滤器 --> <filter> <filter-name>struts</filter-name> <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class> <init-param> <param-name>struts.action.extension</param-name> <param-value>action</param-value> </init-param> </filter> <filter-mapping> <filter-name>struts</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- 字符集过滤器 --> <filter> <filter-name>characterEncodingFilter</filter-name> <filter-class>filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>characterEncoding</param-name> <param-value>UTF-8</param-value> </init-param> <init-param> <param-name>enable</param-name> <param-value>true</param-value> </init-param> </filter> <filter-mapping> <filter-name>characterEncodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- spring的监听 --> <listener> <listener-class> org.springframework.web.context.ContextLoaderListener </listener-class> </listener> <context-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/classes/applicationContext.xml</param-value> </context-param> </web-app>