spring-aop

问题 I am trying to understand isolation levels of Spring transactions. Here is the example I am using: @Component public class BookShop { private Object lockObj = new Object(); @Autowired private BookDao bookDao; @Transactional public void increaseStock(int isbn, int increment){ String threadName = Thread.currentThread().getName(); synchronized (lockObj) { Book book = bookDao.findByIsbn(isbn); System.out.println(threadName+" about to increment the stock"); bookDao.updateStock(book, 5); } System

问题 I know about @Valid annotation to instruct spring to validate for example a Controller argument according to JSR-303 in such this example: @GetMapping("/test") public TestDTO testDTO(@Valid TestDTO testDTO){ return testDTO; } But I would like to be able to configure Spring in some way to enable validation in all my controllers without specify explicitly the @Valid annotation. Is that possible in any way? Some Spring configuration? Making use of AOP?... 回答1: I have finally came across with a

问题 I am using Spring 3 AOP, and I have an aspect that requires access to the HttpServletRequest. It looks something like this: @Aspect public class MyAspect { @Autowired private HttpServletRequest httpServletRequest; public void init() { // Do something once... } @Before("my pointcut here...") private void myMethod() { // I need the httpServletRequest... } @After("my pointcut here...") private void myOtherMethod() { // I need the httpServletRequest... } } And is configured like this: <bean id=

问题 I am trying to implement this tutorial about Declarative Transaction in Spring Framework application but don't work because when I try to execute the MainApp class to test the application behavior I obtain an error: http://www.tutorialspoint.com/spring/declarative_management.htm So I have the StudentDAO interface in wich I only define the CRUD method that I want: package org.andrea.myexample.myDeclarativeTransactionSpring; import java.util.List; import javax.sql.DataSource; /** Interfaccia

问题 Short Version I am looking for a way to have all the findBy methods of a repository class appended with a particular condition Full Version Let's assume I have a Product entity and Customer entity. Both of them extends the OwnerAwareEntity and they inherit ownerRef field which identifies the owner of the entity( It could be a merchant or a partner ). I want to have the findBy methods of the Product and Customer modified in runtime such that they are appended with an additional condition of

问题 I got the following Aspect @Around("execution(public * (@DisabledForBlockedAccounts *).*(..))" + " && @annotation(denyForTeam)") public Object translateExceptionsDenySelectedAccount(ProceedingJoinPoint pjp, Deny deny) throws Throwable { Account account = (Account) pjp.getArgs()[0]; Account selectedAccount = (Account) pjp.getArgs()[1]; if (ArrayUtils.contains(deny.value(), account.getRole())) { if (account.getType().equals(Type.CHEF) && !selectedAccount.getType().equals(Type.CHEF)) { throw new

问题 I am using Spring's declarative transactions (the @Transactional annotation) in "aspectj" mode. It works in most cases exactly like it should, but for one it doesn't. We can call it Lang (because that's what it's actually called). I have been able to pinpoint the problem to the load time weaver. By turning on debug and verbose logging in aop.xml, it lists all classes being woven. The problematic class Lang is indeed not mentioned in the logs at all. Then I put a breakpoint at the top of Lang

问题 I understand Spring avoids using the -javaagent vm option in order to get its AspectJ load time weaving to work and relies instead on a classloader to start the agent. I thought that the Java specification dictated that the only way to use a Java agent was through the -javaagent vm option. Am I wrong? Can someone please direct me to the official Java specification/documentation that would clarify my interrogation? 回答1: I found some information about loading java agents in this interesting

问题 From Spring Documentation: any join point (method execution only in Spring AOP) where the proxy implements the AccountService interface: this(com.xyz.service.AccountService) any join point (method execution only in Spring AOP) where the target object implements the AccountService interface: target(com.xyz.service.AccountService) I don't understand what "target object" and the expression target(...) mean. How is target different from this ? 回答1: this(AType) means all join points where this

问题 It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical and cannot be reasonably answered in its current form. For help clarifying this question so that it can be reopened, visit the help center. Closed 9 years ago . I am using Spring and I need to implement AOP but I am totally new to it. Can anybody help me? 回答1: First place to go: Chapter 7 of the Spring Documentation - Aspect Oriented Programming with Spring. This covers