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JSF上传时，form得设置为enctype="multipart/form-data"
但是这样设置后，点提交后form根本不提交。
上传组件用的是myfaces.
怎么办?初学jsf,希望大家多给我帮助!

解决方案 »

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upload.jsp:
<%@page contentType="text/html"%>
<%@page pageEncoding="UTF-8"%>
<%@taglib prefix="f" uri="http://java.sun.com/jsf/core"%>
<%@taglib prefix="h" uri="http://java.sun.com/jsf/html"%>
<%@taglib uri="http://myfaces.apache.org/extensions" prefix="x"%>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <f:view>
            <h:form enctype="multipart/form-data" id="fileform">
                <h:messages globalOnly="true"/>
                File:
                <x:inputFileUpload  value="#{MyBean.myfile}" storage="file" />
                <br>
                Parem:
                <h:selectOneMenu id="myParamId" value="#{MyBean.myParam}">
                 <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>
                <br>
                <h:commandButton value="提交"  action="#{MyBean.processMyFile}"/>
            </h:form>
        </f:view>
    </body>
</html>
faces-config.xml:
<faces-config version="1.2"
    xmlns="http://java.sun.com/xml/ns/javaee"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-facesconfig_1_2.xsd">
    <managed-bean>
        <managed-bean-name>MyBean</managed-bean-name>
        <managed-bean-class>bean.MyBean</managed-bean-class>
        <managed-bean-scope>session</managed-bean-scope>
    </managed-bean>
    <navigation-rule>
        <from-view-id>/upload.jsp</from-view-id>
        <navigation-case>
            <from-outcome>OK</from-outcome>
            <to-view-id>/MyResult.jsp</to-view-id>
        </navigation-case>
    </navigation-rule>
</faces-config>
MyBean.java
package bean;import java.io.BufferedInputStream;
import java.io.InputStream;
import java.security.MessageDigest;
import javax.faces.application.FacesMessage;
import javax.faces.context.FacesContext;
import javax.faces.event.ActionEvent;
import org.apache.myfaces.custom.fileupload.UploadedFile;/**
*
* @author HEYUN
*/
public class MyBean
{    private UploadedFile myfile;
    private String myResult;
    private String myParam;
    /** Creates a new instance of MyBean */
    public MyBean()
    {
    }    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()
    {
        try
        {
            MessageDigest md = MessageDigest.getInstance(this.getMyParam());

            InputStream in = new BufferedInputStream(myfile.getInputStream());
            try
            {
                byte[] buffer = new byte[64 * 1024];                int count;
                while ((count = in.read(buffer)) > 0)                    md.update(buffer, 0, count);                }
            } finally
            {
                in.close();
            }            byte hash[] = md.digest();            StringBuffer buf = new StringBuffer();            for (int i = 0; i < hash.length; i++)
            {
                int b = hash[i] & 0xFF;
                int c = (b >> 4) & 0xF;
                c = c < 10 ? ('0' + c) : ('A' + c - 10);
                buf.append((char) c);
                c = b & 0xF;
                c = c < 10 ? '0' + c : 'A' + c - 10;
                buf.append((char) c);
            }            myResult = buf.toString();            return "OK";
        } catch (Exception x)
        {
            FacesMessage message = new FacesMessage(FacesMessage.SEVERITY_FATAL,
                    x.getClass().getName(), x.getMessage());
            FacesContext.getCurrentInstance().addMessage(null, message);

            return null;
        }
    }
}enctype="multipart/form-data"加上这个根本不走这个方法MyResult.jsp 就不贴了,就是用来显示myResult 的.
对的你可以写两个form 或者用item的函数取每个组件的值！
　　当上传文件时，你试下每个file都选一下，
而不是手动身里面添值试下。
谢谢你的帮助.你的意思是不是不要在程序里面把file加上去,而是在运行时,点上传按钮?
我试了,提交按钮就是没有反应!
能再详细一点吗?
jsf不熟悉，干吗不用strtus，它的FormFile很好用
这个不是jsf的问题，上传文件是都要用form enctype="multipart/form-data" ，两个form就是上传文件另外搞个form或者放在同一个form里你在控制器里用Fileitem的getFieldName 函数取得其他控件的名字和值！
加了这个form enctype="multipart/form-data" 就可能导致读不出正常的form里的数据！