最近在struts2用到 FCKeditor,在上传图片时总是出错。
严重: Servlet.service() for servlet SimpleUploader threw exception
java.lang.RuntimeException: Unable to load bean org.apache.struts2.dispatcher.multipart.MultiPartRequest (jakarta) - [unknown location]
java.lang.RuntimeException: Unable to load bean org.apache.struts2.dispatcher.multipart.MultiPartRequest (jakarta) - [unknown location]
在网上找了一下,发现
和我的情况差不多。
跟踪了一下源代码,发现struts2的filter拦截了上传文件的动作,
//org.apache.struts2.dispatcher.Dispatcher.java
public HttpServletRequest wrapRequest(HttpServletRequest request, ServletContext servletContext) throws IOException {
// don't wrap more than once
if (request instanceof StrutsRequestWrapper) {
return request;
}
// don't wrap more than once
if (request instanceof StrutsRequestWrapper) {
return request;
}
String content_type = request.getContentType();
if (content_type != null && content_type.indexOf("multipart/form-data") != -1) {
MultiPartRequest multi = getContainer().getInstance(MultiPartRequest.class);
request = new MultiPartRequestWrapper(multi, request, getSaveDir(servletContext));
} else {
request = new StrutsRequestWrapper(request);
}
if (content_type != null && content_type.indexOf("multipart/form-data") != -1) {
MultiPartRequest multi = getContainer().getInstance(MultiPartRequest.class);
request = new MultiPartRequestWrapper(multi, request, getSaveDir(servletContext));
} else {
request = new StrutsRequestWrapper(request);
}
return request;
}
在这里又找不到MultiPartRequest.class的实现类。于是出错了。
}
在这里又找不到MultiPartRequest.class的实现类。于是出错了。
只要不让struts2拦截处理上传事件,就应该没问题了。
修改web.xml,把原来的
<filter-mapping>
<filter-name>struts</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter-name>struts</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
改为
<filter-mapping>
<filter-name>struts</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
<filter-name>struts</filter-name>
<url-pattern>*.action</url-pattern>
</filter-mapping>
而上传页面调用时直接用文件名调用(如upload.jsp)。struts2只处理 *.action 的请求。
试了一下。和预想的一样,一切OK。