diff options
Diffstat (limited to 'spring-framework/23-aop-aspectj-annotations/src/main/java/com')
5 files changed, 140 insertions, 0 deletions
diff --git a/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/App.java b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/App.java new file mode 100644 index 0000000..13a782c --- /dev/null +++ b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/App.java @@ -0,0 +1,11 @@ +package com.example.spring; + +import com.example.spring.aop.BankApp; + +public class App { + public static void main(String[] args) { + // Actually, BankApp is the class with the main method. + // It should have been executed directly instead of this class. + BankApp.main(args); + } +} diff --git a/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/Account.java b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/Account.java new file mode 100644 index 0000000..f2d0e84 --- /dev/null +++ b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/Account.java @@ -0,0 +1,38 @@ +package com.example.spring.aop; + +public class Account { + private int accNo; + private double balance; + + public void withdraw(double amount) { + if (balance >= amount) { + balance -= amount; + } + } + + public void deposit(double amount) { +// System.out.println("Account.deposit()"); + balance += amount; + } + + + public void printDetails() { + System.out.println("Balance of " + accNo + " : " + balance); + } + + public int getAccNo() { + return accNo; + } + + public void setAccNo(int accNo) { + this.accNo = accNo; + } + + public double getBalance() { + return balance; + } + + public void setBalance(double balance) { + this.balance = balance; + } +} diff --git a/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/BankApp.java b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/BankApp.java new file mode 100644 index 0000000..6ad43cf --- /dev/null +++ b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/BankApp.java @@ -0,0 +1,29 @@ +package com.example.spring.aop; + +import org.springframework.context.support.ClassPathXmlApplicationContext; + +public class BankApp { + + /** + * @param args + */ + public static void main(String[] args) { + ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext(new String[] { + "classpath:META-INF/spring/applicationContext.xml",}); + + Account acc = ctx.getBean("account", Account.class); + + acc.printDetails(); // 250 + acc.withdraw(10); + acc.printDetails(); // 240 + acc.deposit(20); + acc.printDetails(); // 260 + +// System.out.println("An exception should occur here if attempted to withdraw a large amount."); +// acc.withdraw(1200); // Uncommented, this should throw an exception +// acc.printDetails(); // 260 + + ctx.close(); + } + +} diff --git a/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/security/AccessChecker.java b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/security/AccessChecker.java new file mode 100644 index 0000000..cd721f7 --- /dev/null +++ b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/security/AccessChecker.java @@ -0,0 +1,32 @@ +package com.example.spring.aop.security; + +import org.aspectj.lang.annotation.After; +import org.aspectj.lang.annotation.Aspect; +import org.aspectj.lang.annotation.Before; + +@Aspect +public class AccessChecker { + + /* + * In-place pointcut expressions are used here (i.e. the pointcut + * expression is just declared with the advice directly rather than + * elsewhere). + */ + @Before("execution(public * com.example.spring.aop.Account.deposit(..))") + public void checkDepositPermission() { + System.out.println("Aspect is checking deposit permission..."); + } + + @After("execution(public * com.example.spring.aop.Account.deposit(..))") + public void checkDepositPermissionAfterDemo() { + System.out.println("checkDepositPermissionAfterDemo()"); + } + + @Before("execution(public * com.example.spring.aop.Account.withdraw(..)) && args(amount)") + public void checkWithdrawPermission(double amount) { + System.out.println("Aspect is checking withdraw permission for " + amount); + if (amount > 1000.0) { + throw new AccessException("Withdrawing more than 1000.0 is not allowed."); + } + } +} diff --git a/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/security/AccessException.java b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/security/AccessException.java new file mode 100644 index 0000000..0e1b60c --- /dev/null +++ b/spring-framework/23-aop-aspectj-annotations/src/main/java/com/example/spring/aop/security/AccessException.java @@ -0,0 +1,30 @@ +package com.example.spring.aop.security; + +public class AccessException extends RuntimeException { + + + /** + * + */ + private static final long serialVersionUID = -6529989268011261235L; + + public AccessException() { + // TODO Auto-generated constructor stub + } + + public AccessException(String message) { + super(message); + // TODO Auto-generated constructor stub + } + + public AccessException(Throwable cause) { + super(cause); + // TODO Auto-generated constructor stub + } + + public AccessException(String message, Throwable cause) { + super(message, cause); + // TODO Auto-generated constructor stub + } + +} |