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我实现了一个outputResource为“content”的树（参见Downloading file from IceFaces tree）。Icefaces tree + outputResource
但是，当我尝试下载文件（我只有txt或csv文件）时，出现HTTP 500状态错误。
树状结构是一样的东西
Root
|-infoFiles
| |-A.csv
| |-B.csv
|-validateFiles
| |-C.txt
| |-D.txt
而且一旦我点击该资源的例外是
java.io.FileNotFoundException: C:\SRC\dataFiles\998\validateFiles (Access denied)
java.io.FileInputStream.open(Native Method)
java.io.FileInputStream.<init>(FileInputStream.java:138)
java.io.FileInputStream.<init>(FileInputStream.java:97)
mx.gob.sagarpa.utilidades.FileResource.open(FileResource.java:39)
com.icesoft.faces.component.outputresource.RegisteredResource.open(OutputResource.java:474)
com.icesoft.faces.context.ResourceRegistryLocator$DynamicResourceDispatcherAdapter$DynamicResourceAdapter.open(ResourceRegistryLocator.java:117)
org.icefaces.impl.push.DynamicResourceDispatcher$ResourceServer.respond(DynamicResourceDispatcher.java:224)
org.icefaces.impl.push.DynamicResourceDispatcher$ResourceServer.handleResourceRequest(DynamicResourceDispatcher.java:201)
org.icefaces.impl.push.DynamicResourceDispatcher$Mapping.handleResourceRequest(DynamicResourceDispatcher.java:370)
org.icefaces.impl.push.DynamicResourceDispatcher.handleResourceRequest(DynamicResourceDispatcher.java:89)
org.icefaces.application.ResourceRegistry.handleResourceRequest(ResourceRegistry.java:75)
org.icefaces.impl.application.WindowScopeManager.handleResourceRequest(WindowScopeManager.java:165)
javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
javax.faces.application.ResourceHandlerWrapper.handleResourceRequest(ResourceHandlerWrapper.java:125)
javax.faces.webapp.FacesServlet.service(FacesServlet.java:591)
org.netbeans.modules.web.monitor.server.MonitorFilter.doFilter(MonitorFilter.java:393)
有时甚至TXT发生只是CSV文件，有时
Tree.xhtml
<ice:tree id="tree"
value="#{treeBean.model}"
var="item"
hideRootNode="false"
hideNavigation="false"
>
<ice:treeNode>
<f:facet name="icon">
<ice:panelGroup style="display: inline">
<h:graphicImage value="#{item.userObject.icon}" />
</ice:panelGroup>
</f:facet>
<f:facet name="content">
<ice:panelGroup style="display: inline-block">
<ice:outputResource resource="#{item.userObject.resource}"
fileName="#{item.userObject.resource.filename}"
mimeType="#{item.userObject.resource.mimeType}"
/>
</ice:panelGroup>
</f:facet>
</ice:treeNode>
</ice:tree>
TreeBean.java
@ManagedBean
@ViewScoped
public class TreeBean implements Serializable {
private DefaultTreeModel model;
public final String openFolderImg = "./img/tree_folder_open.gif";
public final String closeFolderImg = "./img/tree_folder_close.gif";
public final String fileImg = "./img/tree_document.gif";
@ManagedProperty("#{userBean}")
private UserBean userBean;
@PostConstruct
public void init() {
// create root node with its children expanded
DefaultMutableTreeNode rootTreeNode = new DefaultMutableTreeNode();
FileResourceUserObject rootObject = new FileResourceUserObject(rootTreeNode);
rootObject.setText("Sistema de Rendición de Cuentas");
rootObject.setExpanded(true);
rootObject.setResource(new FileResource("Sistema de Rendición de Cuentas", null));
rootObject.setBranchContractedIcon(openFolderImg);
rootObject.setBranchExpandedIcon(closeFolderImg);
rootTreeNode.setUserObject(rootObject);
// model is accessed by the ice:tree component
model = new DefaultTreeModel(rootTreeNode);
File f = new File("./998/");
createTree(f, rootTreeNode);
}
public DefaultTreeModel getModel() {
return model;
}
public UserBean getUserBean() {
return userBean;
}
public void setUserBean(UserBean userBean) {
this.userBean = userBean;
}
private void createTree(File fileRoot, DefaultMutableTreeNode treeRoot) {
File[] files = fileRoot.listFiles();
DefaultMutableTreeNode branchNode;
for (File f : files) {
if (f.isDirectory()) {
branchNode = new DefaultMutableTreeNode();
FileResourceUserObject branchObject = new FileResourceUserObject(branchNode);
branchObject.setExpanded(false);
branchObject.setText(f.getName());
branchObject.setResource(new FileResource(f.getName(), f.getAbsolutePath()));
branchObject.setBranchContractedIcon(openFolderImg);
branchObject.setBranchExpandedIcon(closeFolderImg);
branchNode.setUserObject(branchObject);
treeRoot.add(branchNode);
createTree(f, branchNode);
}
if (f.isFile()) {
branchNode = new DefaultMutableTreeNode();
FileResourceUserObject branchObject = new FileResourceUserObject(branchNode);
branchObject.setText(f.getName());
branchObject.setResource(new FileResource(f.getName(), f.getAbsolutePath()));
branchObject.setLeaf(true);
branchObject.setLeafIcon(fileImg);
branchNode.setUserObject(branchObject);
treeRoot.add(branchNode);
}
}
return;
}
}
FileResourceUserObject.java
public class FileResourceUserObject extends IceUserObject{
private FileResource resource;
public FileResourceUserObject(DefaultMutableTreeNode wrapper) {
super(wrapper);
}
public FileResource getResource() {
return resource;
}
public void setResource(FileResource resource) {
this.resource = resource;
}
}
FileResou rce.java
public class FileResource implements Resource{
private String filename;
private String fileAbsolutePath;
private String mimeType;
ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
public FileResource(String filename, String fileAbsolutePath) {
this.filename = filename;
this.fileAbsolutePath = fileAbsolutePath;
this.mimeType = ec.getMimeType(filename);
}
@Override
public String calculateDigest() {
return filename;
}
@Override
public InputStream open() throws IOException {
return new FileInputStream(fileAbsolutePath);
}
@Override
public Date lastModified() {
return new Date();
}
@Override
public void withOptions(Options optns) throws IOException {
}
public String getFileAbsolutePath() {
return fileAbsolutePath;
}
public void setFileAbsolutePath(String fileAbsolutePath) {
this.fileAbsolutePath = fileAbsolutePath;
}
public String getFilename() {
return filename;
}
public void setFilename(String filename) {
this.filename = filename;
}
public String getMimeType() {
return mimeType;
}
}
UPDATE
我注意到的是，当我得到500状态错误的FileNotFoundException异常总是指向相同的路径java.io.FileNotFoundException：C： \ SRC \ dataFiles \ 998 \ validateFiles（拒绝访问） 我开始认为我所有的FileResources都指向相同的路径...为什么会发生这种情况？