Question

我想在primefaces中将文本文件显示到textarea中。

以下用户定义步骤为：

点击上传控件（用户可以上传多个文件）
我正在获取所有上传的文件并在单选按钮
从单选按钮，用户将选择文件和该文件之一将加载到textarea。

执行第3步时，我收到以下错误

java.io.FileNotFoundException: C:\Users\UserName\Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\ProjectDummy\upload_d8a75697_ad88_43fe_acd8_8133bf93d727_00000017.tmp (The system cannot find the file specified)

javax.servlet.ServletException: java.io.FileNotFoundException: C:\Users\UserName\Workspace\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\work\Catalina\localhost\ProjectDummy\upload_d8a75697_ad88_43fe_acd8_8133bf93d727_00000017.tmp (The system cannot find the file specified)
        javax.faces.webapp.FacesServlet.service(FacesServlet.java:659)
        org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

以下是代码： Xhtml代码：

<h:form method="POST" enctype="multipart/form-data"
                    prependId="false">
                    <p:growl id="messages" showDetail="true" />
                    <p:panelGrid columns="1">
                        <p:fileUpload
                            fileUploadListener="#{backingBean.handleFileUpload}"
                            mode="advanced" update="messages,console" auto="true"
                            multiple="true" />
                        <br />
                        <br />

                        <p:selectOneRadio id="console" value="#{backingBean.fileName}"
                            layout="grid" columns="1">
                            <f:selectItems value="#{backingBean.fileNames}" var="f"
                                itemLabel="#{fileName}" itemValue="#{fileName}" />

                        </p:selectOneRadio>

                        <p:commandButton value="Load" action="#{backingBean.loadFile}"
                            ajax="false" update="txtInput" process="@all" style="width:80px"></p:commandButton>
                        <br />
                        <br />
                        <p:inputTextarea id="txtInput" value="#{backingBean.fileText}"
                            rows="10" cols="50">
                        </p:inputTextarea>
                    </p:panelGrid>

                </h:form>

BackingBean.java

public void handleFileUpload(FileUploadEvent event) throws IOException, NotSerializableException {

        li = new ArrayList<UploadedFile>();
        li.add(event.getFile());
        setLi(li);
        ListIterator<UploadedFile> list = li.listIterator();
        while (list.hasNext()) {
            String str = event.getFile().getFileName();
            System.out.println(str);
            ++count;
            fileNames.add(str);
            fileList.add(event.getFile());
            list.next();
        }
    }

    public void loadFile() throws IOException, NotSerializableException {
        String filenameRadio = getFileName();
        for (int i = 0; i < count; i++) {
            String fileS = fileList.get(i).getFileName();

            if (fileS.equalsIgnoreCase(filenameRadio)) {
                setUploadedFile(fileList.get(i));
                InputStream is = getUploadedFile().getInputstream();
                int read = 0;
                byte[] bytes = new byte[(int) fileList.get(i).getSize()];

                String s1;
                while ((read = is.read(bytes)) != -1) {
                    s1 = new String(fileList.get(i).getContents());
                    setFileText(s1);
                    System.out.println(getFileText());
                }
                is.close();
            }
        }
    }

可以帮我解决这个错误吗？

将文件从primefaces中的上传文件加载到textarea中

0 个答案: