BlogJava-微蓝领域-文章分类-Strutshttp://www.blogjava.net/hilor/category/25278.html我的学习档案馆zh-cnSun, 26 Aug 2007 22:25:20 GMTSun, 26 Aug 2007 22:25:20 GMT60Struts中上传文件-formfile的应用http://www.blogjava.net/hilor/articles/139546.htmlhilorhilorSun, 26 Aug 2007 10:26:00 GMThttp://www.blogjava.net/hilor/articles/139546.htmlhttp://www.blogjava.net/hilor/comments/139546.htmlhttp://www.blogjava.net/hilor/articles/139546.html#Feedback0http://www.blogjava.net/hilor/comments/commentRss/139546.htmlhttp://www.blogjava.net/hilor/services/trackbacks/139546.htmlUploadsActionAction.java

  //Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.1/xslt/JavaClass.xsl

package struts.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;

import struts.form.UploadsActionForm;
import org.apache.struts.upload.FormFile;
import java.io.*;
/**
* MyEclipse Struts
* Creation date: 06-11-2006
*
* XDoclet definition:
* @struts.action path="/uploadsAction" name="uploadsActionForm" input="/form/uploadsAction.jsp" scope="request" validate="true"
*/
public class UploadsActionAction extends Action {

// --------------------------------------------------------- Instance Variables

// --------------------------------------------------------- Methods

/**
* Method execute
* @param mapping
* @param form
* @param request
* @param response
* @return ActionForward
*/
//UploadsActionForm uploadsActionForm = (UploadsActionForm) form;
public ActionForward execute(ActionMapping mapping,
            ActionForm form,
            HttpServletRequest request,
            HttpServletResponse response)
throws Exception {

String encoding = request.getCharacterEncoding();
if ((encoding != null) && (encoding.equalsIgnoreCase("utf-8")))
{
response.setContentType("text/html; charset=gb2312");//如果没有指定编码，编码格式为gb2312
}
UploadsActionForm theForm = (UploadsActionForm ) form;
FormFile file = theForm.getFiles();//取得上传的文件
try {
InputStream stream = file.getInputStream();//把文件读入
String filePath = request.getRealPath("/upload");//上传到指定的upload包中
ByteArrayOutputStream baos = new ByteArrayOutputStream();
OutputStream bos = new FileOutputStream(filePath + "/" +
                               file.getFileName());//建立一个上传文件的输出流
//System.out.println(filePath+"/"+file.getFileName());
int bytesRead = 0;
byte[] buffer = new byte[8192];
while ( (bytesRead = stream.read(buffer, 0, 8192)) != -1) {
bos.write(buffer, 0, bytesRead);//将文件写入服务器
}
bos.close();
stream.close();
}catch(Exception e){
System.err.print(e);
}
//request.setAttribute("dat",file.getFileName());
return mapping.findForward("display");

}

}

UploadsActionForm.java

//Created by MyEclipse Struts
// XSL source (default): platform:/plugin/com.genuitec.eclipse.cross.easystruts.eclipse_4.1.1/xslt/JavaClass.xsl

package struts.form;

import org.apache.struts.action.ActionForm;
import org.apache.struts.upload.FormFile;

/**
* MyEclipse Struts
* Creation date: 06-11-2006
*
* XDoclet definition:
* @struts.form name="uploadsActionForm"
*/
public class UploadsActionForm extends ActionForm {
  //public static final String ERROR_PROPERTY_MAX_LENGTH_EXCEEDED = "org.apache.struts.webapp.upload.MaxLengthExceeded";

// --------------------------------------------------------- Instance Variables

/** theFile property */
protected FormFile files;

// ---------------------------------------------------------

/**
* Returns files.
* @return FormFile
*/
public FormFile getFiles() {
return files;
}

/**
* Set the files.
* @param files The files to set
*/
public void setFiles(FormFile file) {
this.files = file;
}

}

上传用的页面:uploadFile.jsp

<%@ page language="java"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>

<html>
<head>
<title>JSP for uploadsActionForm form</title>
</head>
<body>
<html:form action="/uploadsAction" enctype="multipart/form-data"> <1>
theFile : <html:file property="files"/><br/>
<html:submit/><html:cancel/>
</html:form>
</body>
</html>
刚开始<1>处落下了"enctype="multipart/form-data" 费了我不少时间才搞定
--------------------------------------------------------------------------------------------------------------



FormBean:
package onlyfun.caterpillar;

import javax.servlet.http.*;
import org.apache.struts.action.*;
import org.apache.struts.upload.*;

public class UploadForm extends ActionForm {
private FormFile file;

public void setFile(FormFile file) {
this.file = file;
}

public FormFile getFile() {
return file;
}

public void reset(ActionMapping mapping, HttpServletRequest req) {
file = null;
}
}

JSP:
<html:form action="/Upload" method="post" enctype="multipart/form-data">
選擇檔案:<html:file property="file" />
<html:submit>上傳</html:submit>
</html:form>

Action:
package onlyfun.caterpillar;

import java.io.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import org.apache.struts.upload.*;

public class UploadAction extends Action {
public ActionForward execute(ActionMapping mapping,
ActionForm form,
HttpServletRequest request,
HttpServletResponse response)
throws Exception {
UploadForm fileForm = (UploadForm) form;
FormFile file = fileForm.getFile();
FileOutputStream fileOutput = new FileOutputStream("/home/caterpillar/files/" + file.getFileName());

fileOutput.write(file.getFileData());
fileOutput.flush();
fileOutput.close();

return mapping.findForward("success");
}
}

hilor 2007-08-26 18:26 发表评论
]]>关于Struts里提交中文表单到ActionForm后的乱码问题http://www.blogjava.net/hilor/articles/139442.htmlhilorhilorSun, 26 Aug 2007 04:33:00 GMThttp://www.blogjava.net/hilor/articles/139442.htmlhttp://www.blogjava.net/hilor/comments/139442.htmlhttp://www.blogjava.net/hilor/articles/139442.html#Feedback0http://www.blogjava.net/hilor/comments/commentRss/139442.htmlhttp://www.blogjava.net/hilor/services/trackbacks/139442.html由于Struts框架直接把表单数据发送给了ActionForm，所以这里面没有对HttpRequestServlet进行SetCharacterEncoding,所以默认是按照ISO-8859-1(参见Tomcat 源代码中的org.apache.catalina.connector.HttpRequestBase中的protected void parseParameters()方法)，

解决的方法，就是在表单提交到ActionForm之前对request进行编码。
第一种方法，就是写一个过滤器，对所有请求进行过滤

过滤器代码：
package jp.co.ricoh.gtis.others.profile.filters;

 

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

public class SetCharacterEncodingFilter implements Filter {
 private String encoding;
 public void init(FilterConfig filterConfig) throws ServletException {
  // TODO Auto-generated method stub
  this.encoding=filterConfig.getInitParameter("encoding");
 }

 public void doFilter(ServletRequest request, ServletResponse response,
   FilterChain chain) throws IOException, ServletException {
  // TODO Auto-generated method stub
  request.setCharacterEncoding(this.encoding);
  chain.doFilter(request,response);
 }

 public void destroy() {
  // TODO Auto-generated method stub

 }

}

 

配置文件web.xml
  <filter>
   <filter-name>SetCharacterEncodingFilter</filter-name>
   <filter-class>jp.co.ricoh.gtis.others.profile.filters.SetCharacterEncodingFilter</filter-class>
   <init-param>
    <param-name>encoding</param-name>
    <param-value>UTF-8</param-value>
   </init-param>
  </filter>

   <filter-mapping>
   <filter-name>SetCharacterEncodingFilter</filter-name>
   <url-pattern>/*</url-pattern> 
  </filter-mapping>

 

第二种方法是替换默认的控制器org.apache.struts.action.ActionServlet

 

子类代码：
package jp.co.ricoh.gtis.others.profile.controllers;

 

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionServlet;

public class SetEncodingActionServlet extends ActionServlet {

 protected void process(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
  // TODO Auto-generated method stub
  String encoding = getInitParameter("encoding");
  request.setCharacterEncoding(encoding);
  super.process(request, response);
 }

}

 

配置文件web.xml
  <servlet>
    <servlet-name>testAction</servlet-name>
    <servlet-class>jp.co.ricoh.gtis.others.profile.controllers.SetEncodingActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>encoding</param-name>
      <param-value>UTF-8</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>testAction</servlet-name>
    <url-pattern>*.testdo</url-pattern>
  </servlet-mapping>

此例，凡是通过*.testdo来请求的数据，都会经过参数encoding设定的值来编码。



hilor 2007-08-26 12:33 发表评论
]]>