struts2操作数据库

struts2操作数据库是初学者的一个难点也是一个重点，现在我为大家讲解一下struts2操作数据库，使用struts2对数据库进行增、删、改、查和分页查询，请看下面的代码：










User类





public class UserAction extends ActionSupport{

    List<User> userList;

    UserDao userDao=new UserDao();

    User user;

    User2 user2;
public User2 getUser2() {
return user2;
}

public void setUser2(User2 user2) {
this.user2 = user2;
}

public User getUser() {

return user;
}

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

public int getFirstRecord() {
return firstRecord;
}

public void setFirstRecord(int firstRecord) {
this.firstRecord = firstRecord;
}

private  int currentPage =1;

private int Records ;

private int  pageSize =5;

private  int pages ;

int firstRecord;

public List<User> getUserList() {
return userList;
}
public void setUserList(List<User> userList) {
this.userList = userList;
}
public UserDao getUserDao() {
return userDao;
}
public void setUserDao(UserDao userDao) {
this.userDao = userDao;
}
public int getCurrentPage() {
return currentPage;
}
public void setCurrentPage(int currentPage) {
this.currentPage = currentPage;
}
public int getRecords() {
return Records;
}
public void setRecords(int records) {
Records = records;
}
public int getPageSize() {
return pageSize;
}
public void setPageSize(int pageSize) {
this.pageSize = pageSize;
}
public int getPages() {
return pages;
}
public void setPages(int pages) {
this.pages = pages;
}

    public void pages(){

    Records=userDao.getAllCount();

pages = Records/pageSize+((Records%pageSize==0)?0:1);
firstRecord =(currentPage-1)*pageSize;

    }
public String listAll() throws Exception {

        this.pages();
userList =userDao.doList(firstRecord, pageSize);
return SUCCESS;
}

  public String addUser(){
userDao.addUser(user);
return SUCCESS;
}

    public String deleteUser(){

    userDao.deleteUser(user);

    return SUCCESS;

    }

    public String updateUser(){

    userDao.updateUser(user);

    return SUCCESS;

    }

    public String getInfo(){  

   

    user=userDao.getInfo(user.uid);

   

    return SUCCESS;

    }

数据库连接自己写就可以了，之后再action里配置一下就可以运行了，如果需要源代码可以到http://blog.csdn.net/u014626784资源中下载。