jsf 文件上传

依赖的文件：
tomahawk-1.1.3.jar
commons-fileupload-1.2.jar
commons-io-1.3.1.jar
Tomahawk.tld
 

把这个三个包放在/WEB_INF/lib目录下面。Jsf依赖的包也放在这个目录下面
Tomahawk.tld放在/WEB-INF目录下。Jsf标签也放在这个目录下面。
这个主要讲jsf上传文件，因此只罗列了上传文件用到的包和标签。
Web-xml文件如下：
<?xml version="1.0" encoding="UTF-8"?>

<!DOCTYPE web-app PUBLIC

  "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"

  "http://java.sun.com/dtd/web-app_2_3.dtd">

 

<web-app>

    <context-param>

       <param-name>javax.faces.STATE_SAVING_METHOD</param-name>

       <param-value>client</param-value>

    </context-param>

    <!-- Context Listener creates and sets the application handler -->

    <!-- Faces Servlet -->

    <servlet>

       <servlet-name>Faces Servlet</servlet-name>

       <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>

       <load-on-startup>1</load-on-startup>

    </servlet>

 

    <!-- Faces Servlet Mapping -->

    <servlet-mapping>

       <servlet-name>Faces Servlet</servlet-name>

       <url-pattern>*.jsf</url-pattern>

    </servlet-mapping>

 

    <filter>

       <filter-name>ExtensionsFilter</filter-name>

       <filter-class>

           org.apache.myfaces.component.html.util.ExtensionsFilter

       </filter-class>

       <init-param>

           <param-name>uploadMaxFileSize</param-name>

           <param-value>10m</param-value>

       </init-param>

       <init-param>

           <param-name>uploadThresholdSize</param-name>

           <param-value>100k</param-value>

       </init-param>

    </filter>

    <filter-mapping>

       <filter-name>ExtensionsFilter</filter-name>

 

<!—要和<servlet-mapping>中的<servlet-name>一致-->

       <servlet-name>Faces Servlet</servlet-name>

    </filter-mapping>

    <welcome-file-list>

       <welcome-file>index.html</welcome-file>

    </welcome-file-list>

</web-app>

 

上传文件的页面如下：
<%@ include file="tags.jsp"%>

<f:view>

 

<h:form id="MyForm" enctype="multipart/form-data" >

 

    <h:messages globalOnly="true" styleClass="message"/>

 

    <h:panelGrid columns="3" border="0" cellspacing="5">

 

        <h:outputLabel for="myFileId" value="File: "/>

        <x:inputFileUpload id="myFileId" value="#{myBean.myFile}" storage="file" required="true"/>

        <h:message for="myFileId"/>

 

        <h:outputLabel for="myParamId" value="Param: "/>

        <h:selectOneMenu id="myParamId"

                value="#{myBean.myParam}"

                required="true">

            <f:selectItem itemLabel="" itemValue=""/>

            <f:selectItem itemLabel="MD5" itemValue="MD5"/>

            <f:selectItem itemLabel="SHA-1" itemValue="SHA-1"/>

            <f:selectItem itemLabel="SHA-256" itemValue="SHA-256"/>

            <f:selectItem itemLabel="SHA-384" itemValue="SHA-384"/>

            <f:selectItem itemLabel="SHA-512" itemValue="SHA-512"/>

        </h:selectOneMenu>

        <h:message for="myParamId"/>

 

        <h:outputText value=" "/>

        <h:commandButton value="Submit"

            action="#{myBean.processMyFile}"/>

        <h:outputText value=" "/>

 

    </h:panelGrid>

 

</h:form>

</f:view>

 

其中tags.jsp文件如下：

<%@ page language="java" pageEncoding="GB18030"%>

<%@ page contentType="text/html" %>

<%@ taglib uri="http://java.sun.com/jsf/html" prefix="h" %>

<%@ taglib uri="http://java.sun.com/jsf/core" prefix="f" %>

<%@ taglib uri="http://java.sun.com/jstl/core" prefix="c" %>

<%@ taglib uri="http://myfaces.apache.org/tomahawk" prefix="x"%>

 

Faces-config.xml文件如下：
<faces-config>
 

    <managed-bean>

        <managed-bean-name>myBean</managed-bean-name>

        <managed-bean-class>

            fileupload.MyBean

        </managed-bean-class>

        <managed-bean-scope>request</managed-bean-scope>

    </managed-bean>

 

</faces-config>

 

MyBean如下：

package fileupload;
 

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
 

import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
 

import org.apache.myfaces.custom.fileupload.UploadedFile;
 

public class MyBean {
       private UploadedFile myFile;
 

       private String myParam;
 

       private String myResult;
 

       public UploadedFile getMyFile() {
              return myFile;
       }
 

       public void setMyFile(UploadedFile myFile) {
              this.myFile = myFile;
       }
 

       public String getMyParam() {
              return myParam;
       }
 

       public void setMyParam(String myParam) {
              this.myParam = myParam;
       }
 

       public String getMyResult() {
              return myResult;
       }
 

       public void setMyResult(String myResult) {
              this.myResult = myResult;
       }
 

       public String processMyFile() {
              System.out.println("Entry");
              try {
                     InputStream in = new BufferedInputStream(myFile.getInputStream());
                    
                     try {
                            byte[] buffer = new byte[64 * 1024];
                            FileOutputStream fileOutputStream = new FileOutputStream("C://My Files//tst.jpg");//这里可以把上传的文件写服务器目录，或者数据库中
                            while (in.read(buffer) > 0) {
                                   fileOutputStream.write(buffer);
                            }
                     } finally {
                            in.close();
                     }
                     System.out.println("End");
                     return "OK";
              } catch (Exception x) {
                     System.out.print("Exception");
                     FacesMessage message = new FacesMessage(
                                   FacesMessage.SEVERITY_FATAL, x.getClass().getName(), x
                                                 .getMessage());
                     FacesContext.getCurrentInstance().addMessage(null, message);
                     return null;
              }
       }
}