struts2文件上传

新建一个web项目

从官方网站上下载的 struts-2.2.1.1例子（app）struts2-blank解压。

上传文件主要的jar：commons-fileupload-1.2.1.jar

 

将struts2-blank项目中的lib ，web.xml，struts.xml复制到自己的新建的项目中

 

修改struts.xml

 

    <!-- 使用缺省的struts的配置文件,struts2的支持jar包: struts2-core-2.0.11.2.jar中 -->
         <include file="struts-default.xml"/>
    <!-- Struts2常量配置
        struts.devMode：开发模式,修改配置信息可以不必重新部署服务器
        struts.i18n.encoding：国际化编码
        struts.ognl.allowStaticMethodAccess:允许ognl访问静态方法 -->
    <constant name="struts.devMode" value="true" />
    <constant name="struts.i18n.encoding" value="UTF-8" />
    <constant name="struts.ognl.allowStaticMethodAccess" value="true" />
    <constant name="struts.multipart.maxSize" value="10701096"/> 

     <package name="example" namespace="/" extends="struts-default">
        <action name="fileupload" class="FileUpload">
            <result>/index.jsp</result>
        </action>
    </package>

 

 

 

public
 
class
 

FileUpload{
    private
 File image;           
//与jsp表单中的名称对应
    private
 String imageFileName; 
//FileName为固定格式
    private
 String imageContentType ;
//ContentType为固定格式



    public
 String execute() 
throws
 Exception{
System.out.println("imageFileName = "
+imageFileName);
System.out.println("imageContentType = "
+imageContentType);
        //获取服务器的根路径realpath
        String realpath = ServletActionContext.getServletContext().getRealPath("/images"
);
System.out.println(realpath);
        if
(image!=
null
){
            File savefile = new
 File(
new
 File(realpath), imageFileName);
            if
(!savefile.getParentFile().exists()) savefile.getParentFile().mkdirs();
            FileUtils.copyFile(image, savefile);
            ActionContext.getContext().put("message"
, 
"上传成功"
);
        }else
{
            ActionContext.getContext().put("message"
, 
"上传失败"
);
        }
        return
 
"success"
;
    }


    public
 String getImageContentType() {
        return
 imageContentType;
    }
    public
 
void
 setImageContentType(String imageContentType) {
        this
.imageContentType = imageContentType;
    }
    public
 String getImageFileName() {
        return
 imageFileName;
    }
    public
 
void
 setImageFileName(String imageFileName) {
        this
.imageFileName = imageFileName;
    }
    public
 File getImage() {
        return
 image;
    }
    public
 
void
 setImage(File image) {
        this
.image = image;
    }
}

 

<form action=
"${pageContext.request.contextPath}/

fileupload.action"
 enctype=
"multipart/form-data"
 method=
"post"
>
    文件:<input type="file"
 name=
"image"
>
    <input type="submit"
 value=
"上传"
/>

  </form>

@@多文件上传
    在上面的基础上略加改动

  
public
 
class
 FileUpload{
    private
 File[] image;
    private
 String[] imageFileName;
    private
 String[] imageContentType ;

    public
 String execute() 
throws
 Exception{
        String realpath = ServletActionContext.getServletContext().getRealPath("/images"
);
        System.out.println(realpath);
        if
(image!=
null
){
            File savedir = new
 File(realpath);
            if
(!savedir.exists())
               {
                  savedir.mkdirs();
               }
        System.out.println("image.length = "
+image.length);
            for
(
int
 i = 
0
 ; i<image.length ; i++){

System.out.println("imageContentType["
+i+
"] = "
+imageContentType[i]);
                File savefile = new
 File(savedir, imageFileName[i]);
                FileUtils.copyFile(image[i], savefile);
            }
            ActionContext.getContext().put("message"
, 
"上传成功"
);
        }
        return
 
"success"
;
    }
    public File[] getImage() {
        return image;
    }
    public void setImage(File[] image) {
        this.image = image;
    }
    public String[] getImageFileName() {
        return imageFileName;
    }
    public void setImageFileName(String[] imageFileName) {
        this.imageFileName = imageFileName;
    }
    public String[] getImageContentType() {
        return imageContentType;
    }
    public void setImageContentType(String[] imageContentType) {
        this.imageContentType = imageContentType;
    }
}

<form action=
"${pageContext.request.contextPath}/fileupload.action"
 enctype=
"multipart/form-data"
 method=
"post"
>
    文件1
:<input type=
"file"
 name=
"image"
><br/>
    文件2
:<input type=
"file"
 name=
"image"
><br/>
    文件3
:<input type=
"file"
 name=
"image"
><br/>
    <input type="submit"
 value=
"上传"
/>
  </form>