我想把GAE-Shiro和Resteasy放在一起。所以我尝试做一个快速端口。但是我收到了这个错误：
[ERROR] java.lang.RuntimeException: java.lang.InstantiationException: com.cilogi.shiro.guice.ServeModule
[ERROR] at org.jboss.resteasy.plugins.guice.GuiceResteasyBootstrapServletContextListener.getModules(GuiceResteasyBootstrapServletContextListener.java:83)
[ERROR] at org.jboss.resteasy.plugins.guice.GuiceResteasyBootstrapServletContextListener.contextInitialized(GuiceResteasyBootstrapServletContextListener.java:27)
[ERROR] at org.mortbay.jetty.handler.ContextHandler.startContext(ContextHandler.java:548)
[ERROR] at org.mortbay.jetty.servlet.Context.startContext(Context.java:136)
[ERROR] at org.mortbay.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1250)
[ERROR] at org.mortbay.jetty.handler.ContextHandler.doStart(ContextHandler.java:517)
[ERROR] at org.mortbay.jetty.webapp.WebAppContext.doStart(WebAppContext.java:467)
[ERROR] at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
[ERROR] at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
[ERROR] at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
[ERROR] at org.mortbay.jetty.handler.HandlerWrapper.doStart(HandlerWrapper.java:130)
[ERROR] at org.mortbay.jetty.Server.doStart(Server.java:224)
[ERROR] at org.mortbay.component.AbstractLifeCycle.start(AbstractLifeCycle.java:50)
[ERROR] at com.google.appengine.tools.development.JettyContainerService.startContainer(JettyContainerService.java:228)
[ERROR] at com.google.appengine.tools.development.AbstractContainerService.startup(AbstractContainerService.java:255)
[ERROR] at com.google.appengine.tools.development.AbstractServer.startup(AbstractServer.java:79)
[ERROR] at com.google.appengine.tools.development.DevAppServerImpl$Servers.startup(DevAppServerImpl.java:451)
[ERROR] at com.google.appengine.tools.development.DevAppServerImpl.start(DevAppServerImpl.java:198)
[ERROR] at com.google.appengine.tools.development.gwt.AppEngineLauncher.start(AppEngineLauncher.java:97)
[ERROR] at com.google.gwt.dev.DevMode.doStartUpServer(DevMode.java:509)
[ERROR] at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1068)
[ERROR] at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:811)
[ERROR] at com.google.gwt.dev.DevMode.main(DevMode.java:311)
[ERROR] Caused by: java.lang.InstantiationException: com.cilogi.shiro.guice.ServeModule
[ERROR] at java.lang.Class.newInstance0(Class.java:359)
[ERROR] at java.lang.Class.newInstance(Class.java:327)
[ERROR] at org.jboss.resteasy.plugins.guice.GuiceResteasyBootstrapServletContextListener.getModules(GuiceResteasyBootstrapServletContextListener.java:70)
[ERROR] ... 22 more
这是我当前的web.xml配置
<context-param>
<param-name>resteasy.guice.modules</param-name>
<!-- <param-value>org.jboss.errai.ui.demo.server.MyServletModule</param-value> -->
<param-value>com.cilogi.shiro.guice.ServeModule</param-value>
</context-param>
<listener>
<listener-class>
org.jboss.resteasy.plugins.guice.GuiceResteasyBootstrapServletContextListener
</listener-class>
</listener>
<context-param>
<param-name>resteasy.servlet.mapping.prefix</param-name>
<param-value>/</param-value>
</context-param>
<servlet>
<servlet-name>Resteasy</servlet-name>
<servlet-class>
org.jboss.resteasy.plugins.server.servlet.HttpServletDispatcher
</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Resteasy</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<context-param>
<param-name>user-base-url</param-name>
<param-value>/user/admin</param-value>
</context-param>
<context-param>
<param-name>static-base-url</param-name>
<param-value></param-value>
</context-param>
<listener>
<listener-class>org.apache.shiro.web.env.EnvironmentLoaderListener</listener-class>
</listener>
<listener>
<listener-class>com.cilogi.shiro.guice.ServeContextListener</listener-class>
</listener>
<mime-mapping>
<extension>manifest</extension>
<mime-type>text/cache-manifest</mime-type>
</mime-mapping>
<welcome-file-list>
<welcome-file>index.html</welcome-file>
</welcome-file-list>
答案 0 :(得分：4)
我意识到这个问题已经差不多一年了，但我最近遇到了与Shiro（注意：不是GAE-Shiro）和RESTEasy类似的问题，并认为我会发布我在这里使用的解决方案，这样它可能会让其他人受益谁遇到这个特殊的问题。
问题是RESTEasy的GuiceResteasyBootstrapServletContextListener正在尝试创建一个需要传递参数的模块（在我的例子中，它是一个需要ShiroWebModule参数的ServletContext。 ..在你的情况下，看起来com.cilogi.shiro.guice.ServeModule需要传递一个String。但是，当RESTEasy尝试创建模块时，它会通过调用no-args构造函数来实现，然后失败，因为没有。
我决定使用的解决方案是扩展GuiceResteasyBootstrapServletContextListener并覆盖getModules(ServletContext ctx)方法，这样如果存在ServletContext的构造函数，则使用它，否则，使用默认的no-args构造函数。
例如：
public class MyBootstrapServletContextListener extends GuiceResteasyBootstrapServletContextListener {
@Override
protected List getModules(final ServletContext context) {
final List result = new ArrayList();
final String modulesString = context.getInitParameter("resteasy.guice.modules");
if (modulesString != null) {
final String[] moduleStrings = modulesString.trim().split(",");
for (final String moduleString : moduleStrings) {
try {
log.info("Found module: {}", moduleString);
final Class cls = Thread.currentThread().getContextClassLoader().loadClass(moduleString.trim());
final Module module = createModule(cls, context);
result.add(module);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
} catch (IllegalAccessException e) {
throw new RuntimeException(e);
} catch (InstantiationException e) {
throw new RuntimeException(e);
} catch (IllegalArgumentException e) {
throw new RuntimeException(e);
} catch (InvocationTargetException e) {
throw new RuntimeException(e);
}
}
}
return result;
}
private Module createModule(Class cls, ServletContext context) throws InstantiationException, IllegalAccessException, IllegalArgumentException, InvocationTargetException {
Constructor constructor = null;
try {
constructor = cls.getConstructor(ServletContext.class);
} catch (NoSuchMethodException e) {
log.info("Class {} has no constructor that takes just a ServletContext parameter; defaulting to no-args constructor.", cls);
}
return constructor == null ? (Module) cls.newInstance() : (Module) constructor.newInstance(context);
}
}
完成此操作后，我将web.xml更改为使用MyBootstrapServletContextListener而不是RESTEasy的GuiceResteasyBootstrapServletContextListener，并且RESTEasy不再有问题。您应该能够执行类似的操作，以允许RESTEasy将所需的String传递给com.cilogi.shiro.guice.ServeModule。
再一次，我意识到你可能不再需要一个解决方案，但我在研究与Shiro的类似问题时遇到了这个问题，并希望帮助其他试图将RESTEasy和Shiro结合在他们的网络应用程序中的人。 / p>