NoClassDefFoundError - SSLSocketFactory

Question

在运行我的junit时得到了这个异常。当我使用JUnit详细运行时，我看到这个类是从右jar加载的。好像还没有初始化。有什么原因吗？

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.NoClassDefFoundError: Could not initialize class org.apache.http.conn.ssl.SSLSocketFactory
    at org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1302)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:977)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:893)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:968)
    at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:859)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:575)
    at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:844)
    at org.springframework.test.web.servlet.TestDispatcherServlet.service(TestDispatcherServlet.java:65)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:668)
    at org.springframework.mock.web.MockFilterChain$ServletFilterProxy.doFilter(MockFilterChain.java:167)
    at org.springframework.mock.web.MockFilterChain.doFilter(MockFilterChain.java:134)
    at org.springframework.test.web.servlet.MockMvc.perform(MockMvc.java:155)

Answer 1

java.lang.NoClassDefFoundError:无法初始化类org.apache.http.conn.ssl.SSLSocketFactory

这是它说的意思。在某种程度上，JVM试图初始化该类，但失败了。在某个地方，应该有一个异常堆栈跟踪，说明失败的实际原因是什么。这很可能是由于某些类中的静态初始化器引发了未检查的异常。没有堆叠痕迹。我们只能猜测真正的原因是什么。