ARGS Inject: 1.0.0 RC 1 framework analysis and source code analysis
ARGS Inject: 1.0.0 RC 1 framework analysis and source code analysis
Introduction: ARGS Inject is an open source framework for functional parameter verification and injection in the Java application.This article will analyze the framework and source code analysis of the ARGS Inject: 1.0.0 RC version, which aims to help developers better understand and use the framework.
1. frame introduction
ARGS Inject is a lightweight Java framework that aims to simplify the process of functional parameter verification and injection.By using ARGS Inject, developers can easily verify and inject functional parameters, thereby reducing the workload of writing duplicate code and improving the readability and maintenance of code.
2. Framework characteristics
The ARGS Inject framework has the following characteristics:
2.1 Flexible parameter verification
ARGS Inject provides a simple and flexible way to verify function parameters.Developers can verify function parameters through annotations, supporting a variety of common verification rules, such as non -air verification and regular expression verification.By using ARGS Inject, developers can verify the parameters before the function execution, thereby reducing errors and abnormal risks.
2.2 Parameter injection
ARGS Inject provides a convenient way to inject functional parameters.Developers can mark the parameters that need to be injected by annotation, and then automatically complete the parameter injection through the ARGS Inject framework.This method can effectively reduce the workload of manual injection parameters and improve the maintenance of code.
2.3 Realization of reflection
The ARGS Inject framework uses reflected implementation methods, making the verification and injection process more concise and efficient.By reflective technology, ARGS Inject can realize dynamic access and modification of parameters, thereby realizing the function of verification and injection.
3. Analysis of source code
Next, we analyze the source code of the ARGS Inject: 1.0.0 RC version 1 to better understand its implementation principle.
3.1 Note definition
The ARGS Inject framework uses a series of annotations to achieve the function of parameter verification and injection.Here are some commonly used annotations:
-@Notnull: Non -empty verification annotations, used to verify parameters cannot be empty.
-@Range: Scope verification annotation, used to verify the parameters within the specified range.
-@Pattern: Regular expression verification annotation, which is used to verify whether the parameters meet the specified regular expression rules.
-@Inject: Inject annotations, used to mark parameters that need to be injected.
3.2 Function parameter verification device
The ARGS Inject framework provides a function parameter verification device for verification of the parameters before the function execution.The validator performs corresponding verification operations on the parameter according to the annotation information on the parameter.The following is an example code of a function parameter verification device:
public class ArgsValidator {
public static void validate(Object[] args) {
for (Object arg : args) {
Annotation[] annotations = arg.getClass().getAnnotations();
for (Annotation annotation : annotations) {
if (annotation instanceof NotNull) {
// Execute non -empty verification
// ...
} else if (annotation instanceof Range) {
// Execution scope verification
// ...
} else if (annotation instanceof Pattern) {
// Execute regular expression verification
// ...
}
}
}
}
}
3.3 Function parameter injectioner
The ARGS Inject framework also provides a function parameter injectioner to inject parameters before the function execution.The injection device completes the corresponding injection operation according to the annotation information on the parameter.The following is an example code of a function parameter injection:
public class ArgsInjector {
public static void inject(Object target, Object[] args) {
Field[] fields = target.getClass().getDeclaredFields();
for (Field field : fields) {
Annotation[] annotations = field.getAnnotations();
for (Annotation annotation : annotations) {
if (annotation instanceof Inject) {
// Execute parameter injection
// ...
}
}
}
}
}
4. Summary
This article conducts framework analysis and source code analysis of ARGS Inject: 1.0.0 RC.ARGS Inject is a simple and flexible Java framework. By using this framework, developers can easily implement the verification and injection of function parameters.It is hoped that this article can better understand and use the ARGS Inject framework to provide some references.
