Detailed explanation
The NextInPuts framework is an open source library for effectively verifying the user input in the Java application.It provides a set of simple and powerful verification functions that enable developers to easily verify data from the user input.
In the NextInpputs framework, there are several core Java class libraries for different types of input data verification.The core functions of these class libraries will be introduced below, and examples are provided to better understand its usage.
1. TextInput: TextInput class library is used to verify text input.It can check whether the text is empty, maximum length, minimum length, and regular expression matching.Here are a sample code that uses the TextInput class library:
TextInput textInput = new TextInput("username");
textInput.nonEmpty().maxLength(20).regExp("[a-zA-Z0-9]+");
String valueerror = Textinput.Geterror ("Please enter the valid user name");
if (validationError == null) {
String username = textInput.getText();
// Treat the effective user name
} else {
// Process verification error
}
2. CheckedInput: CheckInput class libraries are used to verify the input of the selected state, such as the state of the check box or switch.It can verify whether the input is selected or canceled.Here are a sample code using the CheckIdInput class library:
CheckedInput checkedInput = new CheckedInput("acceptTerms");
checkedInput.checked();
String valueerror = checkedIdInput.Geterror ("Please agree to the clause");
if (validationError == null) {
// Treat the selected state
} else {
// Process verification error
}
3. NumericInput: Numericinput class library is used to verify the numerical input.It can verify the range, maximum value, minimum value of the value.Here are a sample code that uses the Numericinput class library:
NumericInput numericInput = new NumericInput("age");
numericInput.range(18, 99);
String valueerror = Numericinput.Geterror ("Please enter valid age");
if (validationError == null) {
int age = numericInput.getNumber().intValue();
// Treatment of effective age
} else {
// Process verification error
}
4. Emailinput: Emailinput class library is used to verify email input.It can check whether the format of the email address is correct.The following is an example code using the Emailinput class library:
EmailInput emailInput = new EmailInput("email");
emailInput.validEmail();
String valueerror = emailinput.Geterror ("Please enter valid email address");
if (validationError == null) {
String email = emailInput.getEmail();
// Process valid email address
} else {
// Process verification error
}
By using these core libraries, developers can easily verify the user input easily to ensure that the input is in line with the expected format and rules.These functions of the NextInPuts framework help improve the stability and security of the application, and reduce the workload of the authentication code of developers.
