我现在正在尝试使用primefaces而不是家庭酿造的文件上传系统,只有我遇到的问题似乎是什么都不做,任何想法为什么?
我正在使用glassfish,我已添加
公地-IO-1.4.jar 公地文件上传-1.2.1 /罐
到netbeans中的我的库
继承我的xhtml
<p:fileUpload fileUploadListener="#{fileUploadController.upload}"
mode="advanced"
update="messages"
sizeLimit="100000000"
allowTypes="/(\.|\/)(gif|jpe?g|png)$/"/>
<p:growl id="messages" showDetail="true"/>
web.xml,
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>thresholdSize</param-name>
<param-value>51200</param-value>
</init-param>
<init-param>
<param-name>uploadDirectory</param-name>
<param-value>C:\Users\Richard\printing~subversion\fileupload\web\Uploaded</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
FileUploadController.java
@ManagedBean(name="fileUploadController")
public class FileUploadController {
private String destination="C:/Users/Richard/printing~subversion/fileupload/web/Uploaded";
public void upload(FileUploadEvent event) {
FacesMessage msg = new FacesMessage("Success! ", event.getFile().getFileName() + " is uploaded.");
FacesContext.getCurrentInstance().addMessage(null, msg);
// Do what you want with the file
try {
copyFile(event.getFile().getFileName(), event.getFile().getInputstream());
} catch (IOException e) {
e.printStackTrace();
}
}
public void copyFile(String fileName, InputStream in) {
try {
// write the inputStream to a FileOutputStream
OutputStream out = new FileOutputStream(new File(destination + fileName));
int read = 0;
byte[] bytes = new byte[1024];
while ((read = in.read(bytes)) != -1) {
out.write(bytes, 0, read);
}
in.close();
out.flush();
out.close();
System.out.println("New file created!");
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
}
我也试过这个例子:http://e-blog-java.blogspot.co.uk/2010/04/ppr-multi-file-upload-with-primefaces.html
但问题是当我复制代码时我无法显示上传内容?
任何人都有任何想法发生了什么?
由于
答案 0 :(得分:2)
您是否在项目中包含了必要的导入?如果我没记错的话,我曾经使用过primefaces上传,我需要为上传内容包含一个特定的maven依赖。
快速谷歌之后:
Commons IO
Commons File Upload
或maven风格:
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2.1</version>
</dependency>
结合上面的答案:)
fileUploadListener="#{uploaderBB.handleFileUpload}"
资源: Resource
答案 1 :(得分:2)
确定已经解决了这个问题!使用primefaces你必须先放置过滤器,然后再放入任何其他过滤器(我之前有一个上传文件的过滤器),所以现在我的web.xml看起来像:
<!-- <filter>
<filter-name>Upload Filter</filter-name>
<filter-class>richard.fileupload.UploadFilter</filter-class>
<init-param>
<param-name>sizeThreshold</param-name>
<param-value>1024</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>Upload Filter</filter-name>
<url-pattern>/upload/*</url-pattern>
</filter-mapping> -->
<context-param>
<param-name>javax.faces.STATE_SAVING_METHOD</param-name>
<param-value>server</param-value>
</context-param>
<filter>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<filter-class>org.primefaces.webapp.filter.FileUploadFilter</filter-class>
<init-param>
<param-name>thresholdSize</param-name>
<param-value>20480</param-value>
</init-param>
<init-param>
<param-name>uploadDirectory</param-name>
<param-value>C:/Users/Richard/printing~subversion/fileupload/web/WEB-INF/uploaded</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>PrimeFaces FileUpload Filter</filter-name>
<servlet-name>Faces Servlet</servlet-name>
</filter-mapping>
<servlet>
<servlet-name>Faces Servlet</servlet-name>
<servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Faces Servlet</servlet-name>
<url-pattern>*.xhtml</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>/GUI/index.xhtml</welcome-file>
</welcome-file-list>
<context-param>
<param-name>javax.faces.PROJECT_STAGE</param-name>
<param-value>Development</param-value>
</context-param>
<context-param>
<param-name>facelets.LIBRARIES</param-name>
<param-value>/WEB-INF/corejsf.taglib.xml</param-value>
</context-param>
<context-param>
<param-name>javax.faces.INTERPRET_EMPTY_STRING_SUBMITTED_VALUES_AS_NULL</param-name>
<param-value>true</param-value>
</context-param>
我唯一注意到的是现在它们是作为TMP文件上传的,我是否仍然可以使用此文件例如稍后打印出来?
答案 2 :(得分:-1)
修改强>
这个问题是从2013年1月开始的,当时只有PrimeFaces 3.5。对于3.5,默认值为commons-fileupload。因此对于3.5,下面的context-param不是必需的。
如果您使用的是PrimeFaces 4并遇到此问题:
PrimeFaces 4的默认值是“native”。如果您想使用commons-fileupload,则需要在web.xml
:
<context-param>
<param-name>primefaces.UPLOADER</param-name>
<param-value>commons</param-value>
</context-param>
使用WebLogic我使用的是默认值,但在尝试上传时,没有任何反应。没有错误。使用Tomcat,无论哪种方式都很好。我只用Tomcat ant WebLogic尝试过它。