使用Struts2 的result 传递参数

javaEye_good — Mon, 16 Jun 2008 10:39:40 +0800

作者: javaEye_good 链接：http://javaeye-good.javaeye.com/blog/204011 发表时间: 2008年06月16日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

当使用type＝“redirectAction” 或type＝“redirect”提交到一个action并且需要传递一个参数时。这里是有区别的：
使用type＝“redirectAction”时，结果就只能写Action的配置名，不能带有后缀:“.action”

     

  User?u_id=${loginBean.u_id}

使用type＝“redirect”时，结果应是action配置名＋后缀名


   User.action?u_id=${loginBean.u_id}

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用intelliJ IDEA7.0 创建第一个Struts2的CRUD应用

javaEye_good — Wed, 28 May 2008 15:44:52 +0800

作者: javaEye_good 链接：http://javaeye-good.javaeye.com/blog/197879 发表时间: 2008年05月28日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

(一),到struts官方网站下载struts-2.0.11.1-all.zip.URL:http://struts.apache.org/download.cgi#struts20111
(二),打开intelliJ IDEA新建空的Web Application
右键工程加入struts2的jar包：
commons-logging-1.0.4.jar，
freemarker-2.3.8.jar，
ognl-2.6.11.jar，
struts2-core-2.0.11.1.jar，
xwork-2.0.4.jar
(三),一切就绪，开始编码
首先配置web.xml，代码如下：

  

 struts2
  
   org.apache.struts2.dispatcher.FilterDispatcher
  


  struts2
  /*

(四),在工程的src下新建struts.xml,struts.properties.这两个文件分别对应struts2-core-2.0.11.1.jar下的struts-default.xml和default.properties当然你可以到struts2-core-2.0.11.1.jar下拷贝这两个文件并做适当的修改。struts.properties这里不做任何修改
struts.xml的代码如下：





   
    
       
          /user/listUser.jsp
       
       
          /user/editUser.jsp
       
        
             List.action
        
        
             List.action

(五),新建Action代码如下：

package user.actions;

import com.opensymphony.xwork2.ActionSupport;

import java.util.Collection;

import user.model.User;
import user.dao.UserDao;

public class UserAction extends ActionSupport {
    private String userID;
    private String[] userIDs;
    private User user;
    private Collection users;
    
    private UserDao userDao = UserDao.getInstance();
    
    public UserAction(){}

    public String execute() throws Exception {
        return super.execute();
    }

    public String getUserID() {
        return userID;
    }

    public void setUserID(String userID) {
        this.userID = userID;
    }

    public String[] getUserIDs() {
        return userIDs;
    }

    public void setUserIDs(String[] userIDs) {
        this.userIDs = userIDs;
    }

    public User getUser() {
        return user;
    }

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

    public Collection getUsers() {
        return users;
    }

    public void setUsers(Collection users) {
        this.users = users;
    }

    public UserDao getUserDao() {
        return userDao;
    }

    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }
    //==============================
    //all users
    public String listUser(){
        users = userDao.getUsers();
        return SUCCESS;
    }
    //simple user
    public String simpleUser(){
        user = userDao.getUser(userID);
        return SUCCESS;
    }
    //store user
    public String storeUser(){
        userDao.storeUser(user);
        return SUCCESS;
    }
   //delete users
    public String removeUser(){
        if(userID != null)
           userDao.deleteUser(userID);
        else
           userDao.removeUsers(userIDs);
        return SUCCESS;
    }
}

(六),Dao这里简单起见并没有连接数据库，而是用ConcurrentHashMap作为数据源

package user.dao;

import user.model.User;

import java.util.concurrent.ConcurrentMap;
import java.util.concurrent.ConcurrentHashMap;
import java.util.Collection;

/**
 * Created by IntelliJ IDEA.
 * User: ibm
 * Date: 2008-5-27
 * Time: 14:23:17
 * To change this template use File | Settings | File Templates.
 */
public class UserDao {

    private static ConcurrentMap dataMap;
    private static UserDao userDao = new UserDao();
    
    static{
        dataMap = new ConcurrentHashMap();
        dataMap.put("1000",new User("1000","jim","123","beijing"));
        dataMap.put("1001",new User("1001","steven","234","shanghai"));
        dataMap.put("1002",new User("1002","oscar","123","shanghai"));
    }
    
    public UserDao(){}

    public static UserDao getInstance(){
        return userDao;
    }
    public User getUser(String userID){
        return dataMap.get(userID);
    }
    public Collection getUsers(){
        return dataMap.values();
    }
    public void removeUsers(String[] userid){
         for(String uid:userid){
             dataMap.remove(uid);
         }
    }
    public void deleteUser(String userID){
          dataMap.remove(userID);
    }
    public void storeUser(User user){
        dataMap.put(user.getUserID(),user);
    }
}

(七),Model数据Bean

package user.model;

/**
 * Created by IntelliJ IDEA.
 * User: ibm
 * Date: 2008-5-27
 * Time: 14:02:23
 * To change this template use File | Settings | File Templates.
 */
public class User {
    private String userID;
    private String userName;
    private String passWord;
    private String address;

    public User(){}
    public User(String userID,String userName,String passWord,String address){
        this.userID = userID;
        this.passWord = passWord;
        this.userName = userName;
        this.address = address;
    }
    public String getUserID() {
        return userID;
    }

    public void setUserID(String userID) {
        this.userID = userID;
    }

    public String getUserName() {
        return userName;
    }

    public void setUserName(String userName) {
        this.userName = userName;
    }

    public String getPassWord() {
        return passWord;
    }

    public void setPassWord(String passWord) {
        this.passWord = passWord;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }
}

(八),页面显示listUser.jsp

(九),编辑添加页面editUser.jsp

     
          ADD USER!
      
      
          EDIT USER!

到此一个简单的入门struts2应用就算完成了。由于很简单这里并没有加入struts2的验证框架。
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java读取配置文件

javaEye_good — Mon, 26 May 2008 17:40:25 +0800

作者: javaEye_good 链接：http://javaeye-good.javaeye.com/blog/197152 发表时间: 2008年05月26日

声明：本文系JavaEye网站发布的原创博客文章，未经作者书面许可，严禁任何网站转载本文，否则必将追究法律责任！

（1）利用java.util.Properties读取属性文件
properties属性文件config.properties：

business.class=spring.Business
writer.class=spring.FloppyWriter

InputStream is = this.getClass().getClassLoader().getResourceAsStream("config.properties");
Properties pro = new Properties();
pro.load(is);
String businessClass = properties.getProperty("business.class");
String writerClass = properties.getProperty("writer.class");

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