struts2 文件上传 相对路径问题

Question

../代表上一级文件夹
文件名字/代表下一级文件夹      
输出下这句话自己对路径getPath()+"\\"+docFileName

Answer 1

这个我知道，但是改了还是不行啊。
FileOutputStream fos = new FileOutputStream("..\\"+getPath()+"\\"+docFileName);
我把异常贴出来吧java.io.FileNotFoundException: ..\upload\1321961076917.jpg (系统找不到指定的路径。)
java.io.FileOutputStream.open(Native Method)
java.io.FileOutputStream.<init>(FileOutputStream.java:179)
java.io.FileOutputStream.<init>(FileOutputStream.java:70)
action.MyUpload.execute(MyUpload.java:72)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:597)
com.opensymphony.xwork2.DefaultActionInvocation.invokeAction(DefaultActionInvocation.java:452)
com.opensymphony.xwork2.DefaultActionInvocation.invokeActionOnly(DefaultActionInvocation.java:291)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:254)
com.opensymphony.xwork2.interceptor.DefaultWorkflowInterceptor.doIntercept(DefaultWorkflowInterceptor.java:176)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:263)
org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:138)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:314)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:270)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:498)
org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:434)

Answer 2

你把路径打印出来看看，就知道是那个路径，应该是你发布到tomcat上运行的那个路径。

Answer 3

运行出错了，提示(系统找不到指定的路径。)
我是想把文件上传然后保存在根目录upload这个文件夹的。

Answer 4

String path = request.getScheme() + "://" + request.getServerName()
+ ":" + request.getServerPort()
+ "\\项目名\\upload\\";

Answer 5

图片显示应该用这个一路径
String path = request.getScheme() + "://" + request.getServerName()
+ ":" + request.getServerPort()
+ "\\项目名\\upload\\"; 
然后在加上upload文件夹里面的图片文件

Answer 6

我用的是struts，Action里没有request这个变量，执行方法execute是不带参数的，难道要自己定义一个HttpServletRequest变量？

Answer 7

我找你的方法在jsp页面上试过了，还是出现一样的错误java.io.FileNotFoundException: http:\localhost:8080\zxdy\upload\1322027950250.txt (文件名、目录名或卷标语法不正确。)
java.io.FileOutputStream.open(Native Method)
java.io.FileOutputStream.<init>(FileOutputStream.java:179)
java.io.FileOutputStream.<init>(FileOutputStream.java:131)
java.io.FileWriter.<init>(FileWriter.java:73)
org.apache.jsp.fileupload.showUpload_jsp._jspService(showUpload_jsp.java:75)
org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:386)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
主要代码是String path=request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+"\\zxdy\\upload\\";
//String path="D:\\upload\\";
String fileName=""+System.currentTimeMillis();
out.println(fileName+"<br />");
File file=new File(path+fileName+".txt");
pw=new PrintWriter(new FileWriter(file));
在最后一行出错

Answer 8

path要用request.getSession().getServletContext().getRealPath("/upload")

Answer 9

还是不行，上传的目录不是web项目下的upload文件夹，而是F:\java\2011\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\zxdy\upload

Answer 10

ServletActionContext.getServletContext().getRealPath("upload") ;

Answer 11

还是存到这个路径F:\java\2011\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\zxdy\upload

Answer 12

这个问题我也遇到过，不过我把upload包建在了WebRoot目录下即可实现其上传

Answer 13

昨天我也遇到这个问题了，说一下我解决的思路，这个方法ServletActionContext.getServletContext().getRealPath("upload") 取的路径是当前应用的/upload路径，应该在.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\这个文件夹里，注意这是临时文件，所以你指定的路径应该是这个里面有这个文件夹才对啊？这也是为什么一直报路径找不到的原因了。所以你应该去这个里面找你的项目，新建一个upload文件夹才对。

Answer 14

你们讲了那么我只想知道到底怎么才能保存到webroot下的upload文件夹下呢 这个真的好纠结啊