fileupload文件上传求救

Question

做文件上传的时候在servlet中上传是正常的，我想把上传当做一个上传类来用，在外面调用的时候就在ServletFileUpload.isMultipartContent(req)为false。请问该怎么做把这个改成一个上传类来做。
public void doPost(HttpServletRequest req,HttpServletResponse res) throws IOException {
/**
 * form中的enctype必须是multipart/...
 * 组件提供方法检测form表单的enctype属性
 * 在isMultipartContent方法中同时检测了是否是post提交
 * 如果不是post提交则返回false
 */
if(ServletFileUpload.isMultipartContent(req)) {
req.setCharacterEncoding("utf-8");
DiskFileItemFactory factory = new DiskFileItemFactory();
/**
 * 临时文件存储路径要真实存在
 */
factory.setRepository(new File("../webapps/fileupload/tmp"));
//内存最大占用
factory.setSizeThreshold(1024000);
ServletFileUpload sfu = new ServletFileUpload(factory);
//单个文件最大值byte
sfu.setFileSizeMax(102400000);
//所有上传文件的总和最大值byte
sfu.setSizeMax(204800000);
List items = null;
try {
items = sfu.parseRequest(req);
} catch (SizeLimitExceededException e) {
System.out.println("size limit exception!");
} catch(Exception e) {
e.printStackTrace();
}

Iterator iter = items==null?null:items.iterator();
while(iter != null && iter.hasNext()) {
FileItem item = (FileItem)iter.next();
//简单的表单域
if(item.isFormField()) {
System.out.print("form field:");
System.out.print(item.getFieldName() + "  ");
System.out.print(item.getString());
} 
//文件域
else if(!item.isFormField()) {
System.out.println("client name:" + item.getName());
String fileName = String.valueOf(System.currentTimeMillis())+item.getName();//item.getName();//.substring(item.getName().lastIndexOf("\\"));
BufferedInputStream in = new BufferedInputStream(item.getInputStream());
//文件存储在工程的upload目录下
BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File("E:/" + fileName)));
Streams.copy(in, out, true);
}
}
} else {
System.out.println("enctype error!");
}
}

Answer 1

那还是得把request参数传递进来，
直接写个以request做为参数的方法就OK

Answer 2

ActionContext ctx = ActionContext.getContext();
HttpServletRequest request = (HttpServletRequest) ctx.get(ServletActionContext.HTTP_REQUEST);
HttpServletResponse response = (HttpServletResponse) ctx
.get(ServletActionContext.HTTP_RESPONSE);UploadFileServlet servlet=new UploadFileServlet();
try {
servlet.doPost(request, response);
} catch (Exception e1) {
e1.printStackTrace();
}
这样还是报错，下面的是报错代码：
dareway.org.apache.commons.fileupload.FileUploadBase$InvalidContentTypeException: the request doesn't contain a multipart/form-data or multipart/mixed stream, content type header is application/x-www-form-urlencoded
at dareway.org.apache.commons.fileupload.FileUploadBase$FileItemIteratorImpl.<init>(FileUploadBase.java:885)
at dareway.org.apache.commons.fileupload.FileUploadBase.getItemIterator(FileUploadBase.java:331)
at dareway.org.apache.commons.fileupload.FileUploadBase.parseRequest(FileUploadBase.java:349)
at dareway.org.apache.commons.fileupload.servlet.ServletFileUpload.parseRequest(ServletFileUpload.java:126)
at com.kanq.web.action.UserAction.updatePasswrod(UserAction.java:138)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:404)
at com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:267)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:229)
at com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:221)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:150)
at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:48)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:123)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:184)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:105)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:83)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:207)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:74)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:127)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.ProfilingActivationInterceptor.intercept(ProfilingActivationInterceptor.java:107)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:206)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:115)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:143)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:221)
at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:121)
at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:224)
at com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:223)
at com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)

Answer 3

楼主 你想打算怎么写？？？这个方法。。你拿掉不就行了转到其他类里面不就可以了
我想你是觉得 怎么 用request 获取 。。怎么用response 回复么？？你是做J2EE 的么???用过 ssh 么？？或者 spring 或者struts  他们都用相对应的  request 和 response 当然了。如果你没有用过。。那你只能 用 servlet了。这样的 话。。你要写一个类 。。类里面。。初始化构造 函数的时候。。吧。你的 request  response 传进去。。这样不就可以了。。

Answer 4

ActionContext ctx = ActionContext.getContext();
HttpServletRequest request = (HttpServletRequest) ctx.get(ServletActionContext.HTTP_REQUEST);
HttpServletResponse response = (HttpServletResponse) ctx
                .get(ServletActionContext.HTTP_RESPONSE);UploadFileServlet servlet=new UploadFileServlet();
        try {
            servlet.doPost(request, response);
        } catch (Exception e1) {
            e1.printStackTrace();
        }这样的方式没有用啊，这个servlet就是当做一个类来用。

Answer 5

fckeditor就是用的这个包你改改就行了

Answer 6

public class UploadUtil{
public static void upload(HttpServletRequest req){     /**
         * form中的enctype必须是multipart/...
         * 组件提供方法检测form表单的enctype属性
         * 在isMultipartContent方法中同时检测了是否是post提交
         * 如果不是post提交则返回false
         */
        if(ServletFileUpload.isMultipartContent(req)) {
            req.setCharacterEncoding("utf-8");
            DiskFileItemFactory factory = new DiskFileItemFactory();
            /**
             * 临时文件存储路径要真实存在
             */
            factory.setRepository(new File("../webapps/fileupload/tmp"));
            //内存最大占用
            factory.setSizeThreshold(1024000);
            ServletFileUpload sfu = new ServletFileUpload(factory);
            //单个文件最大值byte
            sfu.setFileSizeMax(102400000);
            //所有上传文件的总和最大值byte
            sfu.setSizeMax(204800000);
            List items = null;
            try {
                items = sfu.parseRequest(req);
            } catch (SizeLimitExceededException e) {
                System.out.println("size limit exception!");
            } catch(Exception e) {
                e.printStackTrace();
            }
            
            Iterator iter = items==null?null:items.iterator();
            while(iter != null && iter.hasNext()) {
                FileItem item = (FileItem)iter.next();
                //简单的表单域
                if(item.isFormField()) {
                    System.out.print("form field:");
                    System.out.print(item.getFieldName() + "  ");
                    System.out.print(item.getString());
                } 
                //文件域
                else if(!item.isFormField()) {
                    System.out.println("client name:" + item.getName());
                    String fileName = String.valueOf(System.currentTimeMillis())+item.getName();//item.getName();//.substring(item.getName().lastIndexOf("\\"));
                    BufferedInputStream in = new BufferedInputStream(item.getInputStream());
                    //文件存储在工程的upload目录下
                    BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(new File("E:/" + fileName)));
                    Streams.copy(in, out, true);
                }
            }
        } else {
            System.out.println("enctype error!");
        }
}
}
没有做测试，就是一个代码封装的问题嘛，你要把你的servlet的request当参数传入就OK了

Answer 7

楼主的想法是好的, 可以那么可以写个方法, 这个方法的参数列表要有, HttpRequest, HttpResponse, 并且封装这个方法的类必须集成HttpServlet !