我的应用程序有一个选项，允许用户停用他们的个人资料。只有管理员才能再次激活它们。
我有一个名为ActivateProfile的类，其中有两个方法：
userExist(userName)：检查是否存在具有该用户名的用户，以及其个人资料是否已停用activateAccountByUser(userName)：重新激活用户的个人资料
在输入按钮的单击事件上调用JavaScript函数。 这段代码在Chrome和Mozilla上运行良好，但在Internet Explorer上出现此错误：
SCRIPT438: 对象不支持“userExist”属性或方法
function activateProf() {
var userName=document.getElementById("userName").value;
if (userName == "") {
alert("Полето е задолжително");
} else {
alert(userName + "1");
ActivateProfile.userExist(userName, { callback:function(exist) {
if (userName) {
ActivateProfile.activateAccountByUser(userName);
alert("User is activated");
} else {
alert("User does not exist");
}
}});
}
}
这里是激活个人资料类的代码
public void activateAccountByUser(String userName) {
try {
Connection c = DBComm.getInstance().getConnection();
Statement s = c.createStatement();
ResultSet set = s.executeQuery("select * from accounts where userName = '" + userName + "' and isauthorized='2'");
if (set.next()) {
Statement st = c.createStatement();
st.executeUpdate("update accounts set isauthorized='1' where userName='" + userName + "' and isauthorized='2'");
}
s.close();
c.close();
} catch (Exception ex) {
java.util.logging.Logger.getLogger(ActivateProfile.class.getName()).log(Level.SEVERE, null, ex);
}
}
public boolean userExist(String userName) throws SQLException {
//true exist
//false does not exist
boolean existEmbg = false;
try {
Connection c = DBComm.getInstance().getConnection();
Statement s = c.createStatement();
ResultSet set = s.executeQuery("select * from accounts where userName = '" + userName + "' and isauthorized='2'");
if (set.next()) {
existEmbg = true;
} else {
existEmbg = false;
}
s.close();
c.close();
} catch (Exception ex) {
java.util.logging.Logger.getLogger(ActivateProfile.class.getName()).log(Level.SEVERE, null, ex);
}
return existEmbg;
}