Java 接口访问不同类通过调用相同的接口

Question

我想使用 java 接口，这样我就可以在我的其他 class 中调用定义接口，例如 'private SoapURL soapURL;'，这样我就可以访问任何 class的方法例如：我想使用登录：-

private SoapURL soapURL;
SoapUrl = LoginSoap ();

String nameSpace = soapURL.getMethodName();
String url = soapURL.getUrl();

有没有办法做这样的事情。很抱歉，我不太了解面向对象的原则，但如果我的问题有解决方案，我想知道。提前致谢。

public interface SoapURL {
    public String getNameSpace();
    public String getUrl();
    public String getSoapAction();
    public String getMethodName();
    public String getTag();
}

LoginSoap class

public class LoginSoap implements SoapURL {

    @Override
    public String getNameSpace() {
        return "https://host.com/MobileWFC/";
    }

    @Override
    public String getUrl() {
        return "https://host.com/MobileWFC/MobileWS.asmx";
    }

    @Override
    public String getSoapAction() {
        return "https://host.com/MobileWFC/UserControl";
    }

    @Override
    public String getMethodName() {
        return "UserControl";
    }

    @Override
    public String getTag() {
        return "Login Activity";
    }
}

SignUpSoap class

public class SignUpSoap implements SoapURL {

    @Override
    public String getNameSpace() {
        return "https://host.com/MobileWFC/";
    }

    @Override
    public String getUrl() {
        return "https://host.com/MobileWFC/MobileWS.asmx";
    }

    @Override
    public String getSoapAction() {
        return "https://host.com/MobileWFC/UserRegister";
    }

    @Override
    public String getMethodName() {
        return "UserRegister";
    }

    @Override
    public String getTag() {
        return "SignUp Activity";
    }
}

ResetPasswordSoap class

public class ResetPasswordSoap implements SoapURL {

    @Override
    public String getNameSpace() {
        return "https://host.com/MobileWFC/";
    }

    @Override
    public String getUrl() {
        return "https://host.com/MobileWFC/MobileWS.asmx";
    }

    @Override
    public String getSoapAction() {
        return "https://host.com/MobileWFC/UserPasswordReset";
    }

    @Override
    public String getMethodName() {
        return "UserPasswordReset";
    }

    @Override
    public String getTag() {
        return "Forget Password Activity";
    }
}

Answer 1

随便做，例如：

SoapURL example = new LoginSoap();
String a = example.getTag();

a 应等于 "Login Activity"

Answer 2

您的实施看起来是正确的。要使用它，您可以在 main 中执行此操作：

SoapURL reset = new ResetPasswordSoap();
System.out.println(reset.getUrl());

这是一种在大型系统中最小化耦合的方法。并通过为一起工作的对象组使用公共接口来减少对象之间的依赖性。您可能是面向对象原则的新手，但您已经领先了一步

要将其传递给函数，您可以：

public JPanel resetPass(SoapURL reset) {
    ...
}

// In main:
JPanel resetPassPanel = resetPass(reset);

Answer 3

The main use of Interface is polymorphism, or the ability to perform the same operation on a number of different objects, which is exactly what you wanted in your scenario

你的方法非常好，只是需要修改一下

private SoapURL soapURL;
//SoapUrl = LoginSoap (); // This line should be replaced with the Below line
soapURL=new LoginSoap();

String nameSpace = soapURL.getMethodName();
String url = soapURL.getUrl();

由于LoginSoap、SignUpSoap、ResetPasswordSoap 类实现了SoapURL Interface的类，因此SoapURL的引用变量可以存储Object 中的任何一个 child 类

soapURL=new LoginSoap();//soapURL.someMethod will call method of LoginSoapClass
soapURL=new SignUpSoap();// will call method of SignUpSoap class
soapURL=new ResetPasswordSoap();

Java 接口访问不同类通过调用相同的接口

Java interface access different classes by calling same interface

java

class

oop

interface

Java 接口访问不同 类 通过调用相同的接口

Java interface access different classes by calling same interface

java

class

oop

interface

Java 接口访问不同类通过调用相同的接口