转自：http://www.2cto.com/kf/201403/282787.html

第一种解决方案：

1.手动实现文件过滤：

判断上传的文件是否在允许的范围内
定义该Action允许上传的文件类型 private String allowTypes;
利用Struts2的输入效验判断用户的输入的文件是否合理

UploadAction.java

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
package action;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
 
import org.apache.struts2.ServletActionContext;
 
import com.opensymphony.xwork2.ActionSupport;
 
public class UploadAction extends ActionSupport {
    /**
     *
     */
    private static final long serialVersionUID = 1L;
    private String title;
    private File uploadfile;
    private String uploadfileContentType;
    private String uploadfileFileName;
    private String savePath;
    private String allowType;//定义该Action允许上传的文件类型
     
    public boolean check(String type){
        String[] types=allowType.split(",");
        for(String s:types){
            if(s.equals(type)){
                return true;
            }
        }
        return false;
         
    }
    public void  validate(){
        boolean b=check(uploadfileContentType);
        if(!b){
            addFieldError("upload","上传文件错误");
        }
    }
    public String getAllowType() {
        return allowType;
    }
 
    public void setAllowType(String allowType) {
        this.allowType = allowType;
    }
 
    public String upload()  throws  Exception {
         
         
        FileInputStream fis = new FileInputStream(getUploadfile());
        FileOutputStream  fos=new FileOutputStream(getSavePath()+"\\"+getUploadfileFileName());
        byte[] buffer=new byte[1024];
        int len=0;
        while((len=fis.read(buffer))>0){
            fos.write(buffer,0,len);
        }
        fos.close();
        fis.close();
         
        return SUCCESS;
    }
 
    public String getTitle() {
        return title;
    }
 
    public void setTitle(String title) {
        this.title = title;
    }
 
 
    public File getUploadfile() {
        return uploadfile;
    }
 
    public void setUploadfile(File uploadfile) {
        this.uploadfile = uploadfile;
    }
 
    public String getUploadfileContentType() {
        return uploadfileContentType;
    }
 
    public void setUploadfileContentType(String uploadfileContentType) {
        this.uploadfileContentType = uploadfileContentType;
    }
 
    public String getUploadfileFileName() {
        return uploadfileFileName;
    }
 
    public void setUploadfileFileName(String uploadfileFileName) {
        this.uploadfileFileName = uploadfileFileName;
    }
 
    public String getSavePath() {
        return ServletActionContext.getServletContext().getRealPath(savePath);//得到绝对路径
    }
 
    public void setSavePath(String savePath) {
        this.savePath = savePath;
    }
 
}

struts.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
<!--?xml version="1.0" encoding="UTF-8"?-->
 
<struts>
 
    <package name="hello" namespace="/hello" extends="struts-default">
         
            <!-- 设置允许上传的文件类型 -->
                <param name="allowType">image/x-png,file/txt,image/jpeg
             
            <param name="savePath">/uploadFiles
            <result name="success">
                /success.jsp
            </result>
            <result name="input">
                /index.jsp
            </result>
        </action>
    </package>
</struts>

index.jsp

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib  prefix="s"  uri="/struts-tags"%>>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
 
 
<html>
   
     
    <title>My JSP 'index.jsp' starting page</title>
    <meta http-equiv="pragma" content="no-cache">
    <meta http-equiv="cache-control" content="no-cache">
    <meta http-equiv="expires" content="0">   
    <meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
    <meta http-equiv="description" content="This is my page">
    <!--
    <link rel="stylesheet" type="text/css" href="styles.css">
    -->
   
   
   
  <s:fielderror>
    <form action="/Upload-1/hello/login" method="post" enctype="multipart/form-data">
    文件名：<input type="text" name="title">
    文件：<input type="file" name="uploadfile">
<input type="submit">
    </form>
   
 
</s:fielderror>

success.jsp

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib  prefix="s" uri="/struts-tags"%>
 
   
   
  <%
String path = request.getContextPath();
  System.out.println(path);
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
System.out.println(basePath);
%>
   
  上传成功！<br>
  文件标题：<s:property value="title"><br>
  文件为:<img src="" 'uploadfiles="" '+uploadfilefilename"="" style="display: none;"><img alt="加载中..." title="图片加载中..." src="http://www.2cto.com/statics/images/s_nopic.gif">"/><br>
   
 
</s:property>

第二种解决方案：

2.拦截器实现文件过滤：

配置fileUpload拦截器两个参数：
allowedTypes:允许上传文件的类型，多个值用,分开
maximumSize:允许上传文件的大小，单位字节。

UploadAction.java

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
package action;
 
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
 
import org.apache.struts2.ServletActionContext;
 
import com.opensymphony.xwork2.ActionSupport;
 
public class UploadAction extends ActionSupport {
    /**
     *
     */
    private static final long serialVersionUID = 1L;
    private String title;
    private File uploadfile;
    private String uploadfileContentType;
    private String uploadfileFileName;
    private String savePath;
    private String allowedTypes;
     
     
        public String getAllowedTypes() {
        return allowedTypes;
    }
    public void setAllowedTypes(String allowedTypes) {
        this.allowedTypes = allowedTypes;
    }
 
    public String upload()  throws  Exception {
         
         
        FileInputStream fis = new FileInputStream(getUploadfile());
        FileOutputStream  fos=new FileOutputStream(getSavePath()+"\\"+getUploadfileFileName());
        byte[] buffer=new byte[1024];
        int len=0;
        while((len=fis.read(buffer))>0){
            fos.write(buffer,0,len);
        }
        fos.close();
        fis.close();
         
        return SUCCESS;
    }
 
    public String getTitle() {
        return title;
    }
 
    public void setTitle(String title) {
        this.title = title;
    }
 
 
    public File getUploadfile() {
        return uploadfile;
    }
 
    public void setUploadfile(File uploadfile) {
        this.uploadfile = uploadfile;
    }
 
    public String getUploadfileContentType() {
        return uploadfileContentType;
    }
 
    public void setUploadfileContentType(String uploadfileContentType) {
        this.uploadfileContentType = uploadfileContentType;
    }
 
    public String getUploadfileFileName() {
        return uploadfileFileName;
    }
 
    public void setUploadfileFileName(String uploadfileFileName) {
        this.uploadfileFileName = uploadfileFileName;
    }
 
    public String getSavePath() {
        return ServletActionContext.getServletContext().getRealPath(savePath);//得到绝对路径
    }
 
    public void setSavePath(String savePath) {
        this.savePath = savePath;
    }
 
}

struts.xml

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
<!--?xml version="1.0" encoding="UTF-8"?-->
 
<struts>
 
    <package name="hello" namespace="/hello" extends="struts-default">
         
             
             <interceptor-ref name="fileUpload">
               <param name="allowedTypes">image/x-png,image/gif,image/jpeg
               <param name="maximumSize">20000000
            </interceptor-ref>
            <interceptor-ref name="defaultStack"></interceptor-ref>
            <param name="savePath">/uploadFiles
            <result name="success">
                /success.jsp
            </result>
            <result name="input">
                /index.jsp
            </result>
        </action>
    </package>
</struts>

 

struts2文件上传类型的过滤的更多相关文章

  1. struts2文件上传，文件类型 allowedTypes

    struts2文件上传,文件类型 allowedTypes 1 '.a' : 'application/octet-stream', 2 '.ai' : 'application/postscript ...

  2. Struts2文件上传和下载(原理)

    转自:http://zhou568xiao.iteye.com/blog/220732 1.    文件上传的原理:表单元素的enctype属性指定的是表单数据的编码方式,该属性有3个值:1)     ...

  3. 【Java EE 学习 35 下】【struts2】【struts2文件上传】【struts2自定义拦截器】【struts2手动验证】

    一.struts2文件上传 1.上传文件的时候要求必须使得表单的enctype属性设置为multipart/form-data,把它的method属性设置为post 2.上传单个文件的时候需要在Act ...

  4. springMvc 使用ajax上传文件，返回获取的文件数据 附Struts2文件上传

    总结一下 springMvc使用ajax文件上传 首先说明一下,以下代码所解决的问题 :前端通过input file 标签获取文件,通过ajax与后端交互,后端获取文件,读取excel文件内容,返回e ...

  5. Struts2文件上传下载

    Struts2文件上传 Struts2提供 FileUpload拦截器,用于解析 multipart/form-data 编码格式请求,解析上传文件的内容,fileUpload拦截器 默认在defau ...

  6. Struts2 文件上传

    一:表单准备 ① 要想使用HTML 表单上传一个或多个文件     –须把 HTML表单的 enctype属性设置为multipart/form-data     –须把HTML 表单的method ...

  7. Struts2文件上传方式与上传失败解决方式

    首先将几个对象弄出来第一个 上传页面第二个 上传action第三个 startut2配置文件 我的文字描述不是很好,但是终归是自己写出来的,后来我在网上看到一篇关于文件上传描述的非常清楚的文章, 链接 ...

  8. JAVA Web 之 struts2文件上传下载演示(一)(转)

    JAVA Web 之 struts2文件上传下载演示(一) 一.文件上传演示 1.需要的jar包 大多数的jar包都是struts里面的,大家把jar包直接复制到WebContent/WEB-INF/ ...

  9. （八）Struts2 文件上传和下载

    所有的学习我们必须先搭建好Struts2的环境(1.导入对应的jar包,2.web.xml,3.struts.xml) 第一节:Struts2 文件上传 Struts2 文件上传基于Struts2 拦 ...

随机推荐

  1. servlet运行流程

    servlet运行流程  (2013-06-19 19:16:43) 转载▼     首先Servlet被部署到Web容器中,当客户端发送调用这个Servlet的请求到达Web容器时,Web容器会先判 ...

  2. C/S B/S 及WEB工作原理

     一.C/S B/S区别 (http://wenku.baidu.com/link?url=e8bxaqz_lYCXws6TlDRJEq1qsLumNTBhr3Es6eA1ZuhHhq9FZGbVgo ...

  3. xcode SVN

    Mac上SVN的管理工具: CornerStone http://blog.csdn.net/wohaoxuexi/article/details/8444184 步骤: 1. import 项目到s ...

  4. why we use Symbols in Hash

    Rather than using Strings as the keys in a Hash, it’s better practice to use Symbols. Symbols are ju ...

  5. 从零开始写一个武侠冒险游戏-7-用GPU提升性能(2)

    从零开始写一个武侠冒险游戏-7-用GPU提升性能(2) ----把地图处理放在GPU上 作者:FreeBlues 修订记录 2016.06.21 初稿完成. 2016.08.06 增加对 XCode ...

  6. 一起做RGB-D SLAM (1)

    前言 2016.11 更新 增加了对16.04的支持. 整理了过时的代码. SLAM,即Simultaneous Localization and Mapping,中文译作同时定位与地图创建,是近几十 ...

  7. 从Trie谈到AC自动机

    ZJOI的SAM让我深受打击,WJZ大神怒D陈老师之T3是SAM裸题orz...我还怎么混?暂且写篇`从Trie谈到AC自动机`骗骗经验. Trie Trie是一种好玩的数据结构.它的每个结点存的是字 ...

  8. php中global与$GLOBALS的用法及区别-转载

    php中global 与 $GLOBALS[""] 差别 原本觉得global和$GLOBALS除了写法不一样觉得,其他都一样,可是在实际利用中发现2者的差别还是很大的! 先看下面 ...

  9. cookie注入讲解

    我们首先还是来看看中网景论坛的最新版本"(CNKBBS2007)中网景论坛2007v5.0 "官方下载地址" http://www.cnetking.com/websys ...

  10. JS实现多附件上传（asp.net）

    前几天,用户提出一个需求-多附件上传,另外,每个上传文件要加一个别名,本人创新少,从网上收集了资料,稍微改写,满足了 客户的需求.在应用到程序之前,先做了个小测试,测试通过,小高兴,就记录下了这个小测 ...