spring oxm 是否创建单例 jaxbcontext？

Question

在 Spring OXM 框架内部，JAXBContext.newInstance() 是如何创建的。是单例还是多例。我的要求是我想要单身jaxbcontext 对象？请分享 Spring OXM 的详细信息。谢谢。

Answer 1

我得到了答案，它在 Jaxb2Marshaller 内部创建单例 jaxb 上下文，如下所示：

    public JAXBContext getJaxbContext() {
            if (this.jaxbContext != null) {
                return this.jaxbContext;
            }
            synchronized (this.jaxbContextMonitor) {
                if (this.jaxbContext == null) {
                    try {
                        if (StringUtils.hasLength(this.contextPath)) {
                            this.jaxbContext = createJaxbContextFromContextPath();
                        }
                        else if (!ObjectUtils.isEmpty(this.classesToBeBound)) {
                            this.jaxbContext = createJaxbContextFromClasses();
                        }
                        else if (!ObjectUtils.isEmpty(this.packagesToScan)) {
                            this.jaxbContext = createJaxbContextFromPackages();
                        }
                    }
                    catch (JAXBException ex) {
                        throw convertJaxbException(ex);
                    }
                }
                return this.jaxbContext;
            }
        }