DAO层出现问题了

[huyanqieyu]

private static UserManager instance = new UserManager();

private MyDao userDao;

public UserManager(){
MyDao userDao = new MyDao();

}

public static UserManager getInstance() {
return instance;
}

只贴出一部分，这个类我在用的时候老说userDao是空的，是怎么回事

[lihan6415151528]

ssh的？

spring注入的dao不能随便使用

[zhj92lxs]

public UserManager(){
userDao = new MyDao();

}
这样呢

[游_子]

少了get和set方法,加上就好了

[BearRui]

private static UserManager instance = new UserManager();

private MyDao userDao;

public UserManager(){
// 这里不能重新声明
//MyDao userDao = new MyDao();
// 改成下面的：
userDao = new MyDao();
}

public static UserManager getInstance() {
return instance;
}

[anluny]

spring注入的dao不能随便使用

[whlusha720]

private MyDao userDao;

public UserManager(){
MyDao userDao = new MyDao();


已经声明了 MyDao
又去new一个MyDao对象

[whlusha720]

private MyDao userDao;

public UserManager(){
MyDao userDao = new MyDao();


改成

private MyDao userDao;

public UserManager(){
userDao = new MyDao();