使用@Resource注释的SessionContext注入 [英] SessionContext Injection using @Resource annotation

问题描述

我需要回滚EJB 3无状态SessionBean（CMT，JBoss版本5），我正在使用它

I need to rollback in EJB 3 Stateless SessionBean (CMT, JBoss version 5), for which I am using

sessionContext.setRollbackOnly();

此会话文本使用@Resource注释注入。我的问题：
1）是否首选在EJB3中回滚？

This sessionContext is injected using @Resource annotation. My questions: 1) Is it preferred way to rollback in EJB3?

2）如果我使用公共setter注入，为什么Jboss会在部署时抱怨

2) Why Jboss complains on deployment if I use public setter injection

// throws exception on deployment.
    private SessionContext sessionContext;
    @Resource
    public void setSessionContext(SessionContext sessionContext) {
     this.sessionContext = sessionContext;
    }

但以下工作正常：

@Resource
private SessionContext sessionContext;

以下是第一种情况的例外情况：

Here is the exception in first case:

javax.ejb.SessionContext is an interface, and JAXB can't handle interfaces.
        this problem is related to the following location:
                at javax.ejb.SessionContext
                at public javax.ejb.SessionContext invoice.sap.service.jaxws.SetSctx.arg0
                at invoice.sap.service.jaxws.SetSctx
javax.ejb.SessionContext does not have a no-arg default constructor.
        this problem is related to the following location:
                at javax.ejb.SessionContext

推荐答案

我假设EJB是@WebService，这就是你得到JAXB错误的原因。尝试：

I assume the EJB is an @WebService, which is why you're getting JAXB errors. Try:

@Resource
@WebMethod(exclude=true)
public void setSessionContext(SessionContext sessionContext) {
    this.sessionContext = sessionContext;
}

或者，更改方法可见性或添加最终修饰符（仅限公共非最终的非静态方法是webservices方法）。

Alternatively, change the method visibility or add the final modifier (only public non-final non-static methods are webservices methods).

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