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struts2实现word文件上传和在线阅读

2012-05-04 12:41 363 查看
1. 新建工程后,先引入struts2的jar包:右击项目---myeclipse---add struts capabilities,引入后,web.xml中会生成对应的filter:

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<filter> 

    <filter-name>struts2</filter-name> 

    <filter-class> 

        org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter 

    </filter-class> 

  </filter> 

  <filter-mapping> 

    <filter-name>struts2</filter-name> 

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

  </filter-mapping> 

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<package
namespace="/"
name="default"
extends="struts-default"> 

    <action
name="UploadAction"  

            class="com.up.action.UploadAction"
> 
     <!-- 将savePath设置为"根目录下的upload文件夹" --> 

     <param
name="savePath">/upload</param> 

     <result
name="show">/showc.jsp</result> 

     <result
name="error">/index.jsp</result> 

     </action> 

   </package> 

<package namespace="/" name="default" extends="struts-default">
<action name="UploadAction"
class="com.up.action.UploadAction" >
<!-- 将savePath设置为"根目录下的upload文件夹" -->
<param name="savePath">/upload</param>
<result name="show">/showc.jsp</result>
<result name="error">/index.jsp</result>
</action>
</package>


首先是package,之后是action,action中对应一个或者多个result,如果有其他需要,再进行其他的设置,比如上面的param是用来上传文件的.

3. 编写对应的action,并在jsp页面中进行请求:

编写action要按照配置的struts.xml文件进行编写,action要继承ActionSupport类,并override public String execute(){} 方法

4. 最后,页面和action的传递工作可以由get和set方法实现.

哇,现在才发现,struts2真的很方便呢~

接下来记录今天写的功能啦!

首先用struts2自带的文件上传功能进行文件的上传,之后是读取上传的word文档.读取word文档用到了一个jar包:tm-extractors-0.4,在网上有下的.

具体代码如下:

index.jsp:

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<%@ page language="java"
import="java.util.*"
pageEncoding="UTF-8"%> 

<%@ taglib uri="/struts-tags"
prefix="s"%> 

<% 
String path = request.getContextPath(); 

String basePath =
request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 

%> 
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 

<html> 

  <head> 

    <base
href="<%=basePath%>"> 

     
    <title>Demo of upload files</title> 

    <script
type="text/javascript"> 

    function checkup(){ 
    //提示信息 
var div=document.getElementById("uploadname"); 

if(document.form1.gljueyi.value.length==0){ 

                div.innerHTML="请选择要上传的文件"; 

                document.form1.gljueyi.focus(); 
                return false; 
} 
return  true;    
} 
</script> 

    <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">

    --> 
    <style> 

*{ font-size:14px;} 
</style> 

  </head> 

   
<body> 

<form
action="UploadAction.action"
name="form1"
method="post"
enctype="multipart/form-data"> 

<table> 

  <tr> 

<td
> </td> 

      <td
><span
id="message"
style="font-size:16px;color:red;"
> 
       
      </span></td> 

</tr> 

  <tr> 

<td
style="line-height:30px;">选择上传的文件：</td> 

<td>
<input
type="file"
id="uploadname"
name="upload"></td> 

</tr> 

<tr> 

<td
style="line-height:30px;"><input
type="submit"
name="button"
id="button"
value="提交"
onClick="return checkup();"></td> 

<td><input
type="reset"
name="button2"
id="button2"
value="重置"></td> 

</tr> 

 
</table> 

</form> 

</body> 

</html> 

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<?xml
version="1.0"
encoding="UTF-8"
?> 
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd"> 

<struts> 

<package
namespace="/"
name="default"
extends="struts-default"> 

    <action
name="UploadAction"  

            class="com.up.action.UploadAction"
> 
            <!-- 将savePath设置为"/upload" --> 

            <param
name="savePath">/upload</param> 

     <result
name="show">/showc.jsp</result> 

     <result
name="error">/index.jsp</result> 

     </action> 

   </package> 

</struts>     

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">
<struts>
<package namespace="/" name="default" extends="struts-default">
<action name="UploadAction"
class="com.up.action.UploadAction" >
<!-- 将savePath设置为"/upload" -->
<param name="savePath">/upload</param>
<result name="show">/showc.jsp</result>
<result name="error">/index.jsp</result>
</action>
</package>
</struts>
UploadAction.java:

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package com.up.action; 

 
import java.io.File; 

import java.io.FileInputStream; 

import java.io.FileOutputStream; 

import java.text.SimpleDateFormat; 

import java.util.Date; 

 
import org.apache.struts2.ServletActionContext; 

import org.textmining.text.extraction.WordExtractor; 

 
import com.opensymphony.xwork2.ActionSupport; 

 
public class UploadAction
extends ActionSupport { 
    File upload; 
    String uploadContentType; 
    String uploadFileName; 
     
    String str; 
     
     
    private String savePath; 

 
    public String execute() throws Exception{ 

//      System.out.println("开始上传单个文件-----------------------"); 

//        System.out.println(getSavePath()); 

//        System.out.println("==========" + getUploadFileName()); 

//        System.out.println("==========" + getUploadContentType()); 

//        System.out.println("==========" + getUpload()); 

//        以服务器的文件保存地址和原文件名建立上传文件输出流 

        /*
         * 文件上传工作
         */ 
        String doc = getFilename(getUploadFileName()); 
        String filename =getTime() + "." + doc; 

         
        //文件上传 
        //getSavepath()是获取struts.xml中传过来的值 

        FileOutputStream fos = new FileOutputStream(getSavePath() +
"\\" + filename); 
        FileInputStream fis = new FileInputStream(getUpload()); 

        byte[] buffer =
new byte[1024]; 

        int len = 0; 

        while ((len = fis.read(buffer)) >
0) 
         { 
            fos.write(buffer , 0 , len); 

        } 
         
        int ch = 0; 

        String path = ServletActionContext.getServletContext().getRealPath("/upload"); 

        try{ 
            FileInputStream in = new FileInputStream (path +
"\\" + filename); 
            WordExtractor extractor = new WordExtractor();  
//这里用tm-extractors-0.4.jar实现对word的读取操作.  

            str = extractor.extractText(in);  
            System.out.println(str);  
                }catch(Exception e){ 

                e.printStackTrace(); 
            } 
 
        return "show"; 

    } 
     
   String getTime(){ 
       /**
        * 获取时间来定义文件名称
        * @return String as the name of the file

        */ 
        SimpleDateFormat formatter_f =
new SimpleDateFormat("yyyyMMddHHmmss"); 

        Date now = new Date(); 

        String time = formatter_f.format(now); 
        return time; 
   } 
   String getTrueTime(){ 
       /**
        * 获取当前时间
        * @return String time

        */ 
        SimpleDateFormat formatter_f =
new SimpleDateFormat("yyyy-MM-dd"); 

        Date now = new Date(); 

        String time = formatter_f.format(now); 
        return time; 
   } 
    
   String getFilename(String name){ 
        
       /**
        * 获取文件名的后缀
        * @return String

        */ 
       int i = name.lastIndexOf(".")+1; 

        return name.substring(i,name.length()); 

   } 
   //接受依赖注入的方法 
   public void setSavePath(String value) 

    { 
       this.savePath = value; 

   } 
 
   @SuppressWarnings("deprecation") 

    private String getSavePath()
throws Exception  
    { 
       return ServletActionContext.getRequest().getRealPath(savePath); 

   } 
    
 
   public void setUpload(File upload)  { 

       this.upload = upload;  

   } 
 
   public void setUploadContentType(String uploadContentType)  { 

       this.uploadContentType = uploadContentType;  

   } 
 
   public void setUploadFileName(String uploadFileName)  { 

       this.uploadFileName = uploadFileName;  

   } 
 
   public File getUpload()  { 

       return (this.upload);  

   } 
 
   public String getUploadContentType()  { 

       return (this.uploadContentType);  

   } 
 
   public String getUploadFileName()  { 

       return (this.uploadFileName);  

   } 
 
public String getStr() { 

    return str; 
} 
 
public void setStr(String str) { 

    this.str = str; 
} 
    
} 

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<%@ page language="java"
import="java.util.*"
pageEncoding="UTF-8"%> 

<%@ taglib uri="/struts-tags"
prefix="s"%> 

<% 
String path = request.getContextPath(); 

String basePath =
request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; 

%> 
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> 

<html> 

  <head> 

    <base
href="<%=basePath%>"> 

     
    <title>Demo of upload files</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">

    --> 
    <style> 

*{ font-size:14px;} 
</style> 

  </head> 

   
<body> 

<s:property
value="str"/> 

</body> 

</html> 

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">

<title>Demo of upload files</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">
-->
<style>
*{ font-size:14px;}
</style>
</head>

<body>
<s:property value="str"/>
</body>
</html>
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