java.util.concurrent.ExecutionException：org.apache.catalina.LifecycleException：

Question

我是eclipse和tomcat的新手。我正在创建一个servlet来获取图像并将其保存在数据库中 我使用的是Jre 1.6和tomcat 7.为此，我使用了自定义库：

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

现在我在部署项目时出现此错误：

10 Jun, 2013 6:34:37 PM org.apache.catalina.core.ContainerBase startInternal
SEVERE: A child container failed during start
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/BIOMetric2]]
    at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source)
    at java.util.concurrent.FutureTask.get(Unknown Source)
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1123)
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:800)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
    at java.util.concurrent.FutureTask.run(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
    at java.lang.Thread.run(Unknown Source)    

etc..

Answer 1

我使用了@MultipartConfig，现在工作正常。我用过这段代码。 ...

import javax.servlet.annotation.MultipartConfig;
import javax.servlet.annotation.WebServlet;

...

Part filePart = request.getPart("img");
String imageName = filePart.getName(); 
InputStream in = filePart.getInputStream();

...