Struts2配置

1.導入必須的jar包

2.配置web.xml

<?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" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>StrutsTest</display-name>
  <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>
  <welcome-file-list>
    <welcome-file>index.html</welcome-file>
    <welcome-file>index.htm</welcome-file>
    <welcome-file>index.jsp</welcome-file>
    <welcome-file>default.html</welcome-file>
    <welcome-file>default.htm</welcome-file>
    <welcome-file>default.jsp</welcome-file>
  </welcome-file-list>
</web-app>

 3.配置struts.xml

<?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>
        <constant name="struts.i18n.encoding" value="UTF-8"></constant>
        <constant name="struts.configuration.xml.reload" value="true" />
        <constant name="struts.devMode" value="false" />
        <include file="com/struts/config/login.xml"></include>
        <include file="com/struts/config/login2.xml"></include>
        <include file="com/struts/config/user.xml"></include>
        <include file="com/struts/config/personnelDepart.xml"></include>
    </struts>

  最好是在struts裏面導入其他路徑下的.xml文件。struts.xml裏面寫include

4.其他.xml 例如user.xml

<?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="student" extends="struts-default">
            <action name="userLogin"  class="com.user.servlet.UserLoginAction" method="execute">
                <result name="success" type="redirectAction">lookPersonnelDepart</result>
                <result name="default" >/default.jsp</result>
                <result name="input" >/default.jsp</result>
            </action>

            <action name="userRegist"  class="com.user.servlet.UserRegistAction" method="execute">
                <result name="success" >/registSuccess.jsp</result>
                <result name="default" >/default.jsp</result>
            </action>

            <action name="userDelete"  class="com.user.servlet.UserDeleteAction" method="execute">
                <result name="success" >/deleteSuccess.jsp</result>
                <result name="default" >/default.jsp</result>
            </action>

            <action name="userUpdate"  class="com.user.servlet.UserUpdateAction" method="execute">
                <result name="success" >/updateSuccess.jsp</result>
                <result name="default" >/default.jsp</result>
            </action>
        </package>
    </struts>

 5.寫一個action類 例子：UserLoginAction

package com.user.servlet;

import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
import com.user.dao.UserDao;
import com.user.pojo.User;

/**
 * 用戶登錄
 * @author 鄭平
 */
public class UserLoginAction extends ActionSupport {

    private User user =null;
    private String id;
    private String password;
    public void validateExecute() {
        // TODO Auto-generated method stub
        if(this.id==null || "".equals(this.id.trim())){
            System.out.println("有錯");
            this.addFieldError("id", "id不能爲空");
        }
        if(this.password==null||"".equals(this.password.trim())){
            System.out.println("密碼不能爲空");
            this.addFieldError("password", "密碼不能爲空");
        }
    }
    @Override
    public String execute() throws Exception {
        // TODO Auto-generated method stub
        String values = "success";
        System.out.println("id:" + id + "------------------password:"   + password);
        UserDao userDao = new UserDao();
        ActionContext actionContext = ActionContext.getContext();

        actionContext.getApplication().put("app", "application內容");
        actionContext.put("req", "request內容");
        user = userDao.selectUser(id);
        actionContext.getSession().put("session", user);
        if(!user.getPassword().equals(password)){
            System.out.println("密碼不相同");
            return "default";
        }
        System.out.println("user.id:" + user.getId()+" user.getPassword()："+ user.getPassword());
        return values;
    }

    public String selectUser() {
        UserDao userDao = new UserDao();
        @SuppressWarnings("unused")
        User user = userDao.selectUser(id);
        return "success";
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public User getUser() {
        return user;
    }

    public void setUser(User user) {
        this.user = user;
    }

}