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Struts实时生成Excel文�g下蝲

Fisher — Tue, 16 Jan 2007 09:51:00 GMT

我做的项目原来是先在服务器上生成一个excel文�g�Q�然后用jspsmartupload下蝲的，可是�׃��用jspsmartupload下蝲的excel文�g�׃��~�码问题会有损坏�Q�而且服务器的压力也太大，所以改为在Action中生成excel文�g�Q�然后下载，方便多了。由于项目的原因�Q�excel文�g是实时生成的�Q�对于jxl的��用，大家可以参考jxl相关的文章�?br />有什么问题可以和我联�p�R�?br />MSN:whw_dream(AT)hotmail.com
代码如下�Q?br />test.jsp

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

DownLoad

DownloadAction.java

import org.apache.struts.action.*;
import javax.servlet.http.*;
import java.io.OutputStream;
import test.whw.upload.ExcelBean;
/**
*

Title:DownloadAction

Description: QRRSMMS

Company: jiahansoft

* @author wanghw
* @version 1.0
*/

public class DownloadAction extends Action {
public ActionForward execute(ActionMapping mapping,
                               ActionForm form,
                               HttpServletRequest request,
                               HttpServletResponse response)
      throws Exception {
    try{
      String fname = "test";//Excel文�g�?br />      OutputStream os = response.getOutputStream();//取得输出��?br />      response.reset();//清空输出��?br />      response.setHeader("Content-disposition", "attachment; filename=" + fname + ".xls");//讑֮�输出文�g�?br />      response.setContentType("application/msexcel");//定义输出�c�d��
      ExcelBean eb = new ExcelBean();
      eb.expordExcel(os);//调用生成excel文�gbean
    }catch(Exception e){
      System.out.println(e);
    }

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

ExcelBean.java

package test.whw.upload;
import java.io.*;
import jxl.*;
import jxl.write.*;
import jxl.format.*;
import java.util.*;
import java.awt.Color;

public class ExcelBean {
public ExcelBean(){}
public String expordExcel(OutputStream os)throws Exception{
    jxl.write.WritableWorkbook wbook = Workbook.createWorkbook(os); //建立excel文�g
    String tmptitle = "��试文�g"; //标题
    jxl.write.WritableSheet wsheet = wbook.createSheet("�W�一��?, 0); //sheet名称
    //讄��excel标题
    jxl.write.WritableFont wfont = new jxl.write.WritableFont(
        WritableFont.ARIAL, 16,
        WritableFont.BOLD, false, jxl.format.UnderlineStyle.NO_UNDERLINE,
        jxl.format.Colour.BLACK);
    jxl.write.WritableCellFormat wcfFC = new jxl.write.WritableCellFormat(
        wfont);
    jxl.write.Label wlabel1;
    wlabel1 = new jxl.write.Label(5, 0, tmptitle, wcfFC);
    wsheet.addCell(wlabel1);
    wfont = new jxl.write.WritableFont(
        WritableFont.ARIAL, 14,
        WritableFont.BOLD, false, jxl.format.UnderlineStyle.NO_UNDERLINE,
        jxl.format.Colour.BLACK);
    wcfFC = new jxl.write.WritableCellFormat(
        wfont);
    jxl.write.Label wlabel;
    wlabel = new jxl.write.Label(0, 0, "写入内容");
    wsheet.addCell(wlabel); //
    wbook.write(); //写入文�g
    wbook.close();
    os.close();
    return "success";
}
}

struts-config.xml

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Fisher 2007-01-16 17:51 发表评论

Struts的文件上�?

Fisher — Tue, 16 Jan 2007 09:50:00 GMT

最�q�刚做完一个项目，用Struts1.1做的。从不懂�Q�到熟练使用�Q�都靠参考CSDN的一些文档。但是文章上讲的�q�不一定适合自己�Q�所以我把我自己做的一些东西拿上来�l�大家看看，互相交流一下。如果您有跟好的�Ҏ��Q�可以和我联�p�R�?br />MSN:whw_dream (AT) hotmail.com

Struts的文件上�?br />本文用的是Struts1.1的org.apache.struts.upload.FormFile�c�R��很方便�Q�不用自己写。也不用写一个jsp调用jspsmartupload��可以搞定�?br />
选择上传文�g��面�Q�selfile.jsp

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

UpLoadAction.java

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

/**
*

Title:UpLoadAction

Description: QRRSMMS

Company: jiahansoft

* @author wanghw
* @version 1.0
*/

public class UpLoadAction extends Action {
public ActionForward execute(ActionMapping mapping,
                               ActionForm form,
                               HttpServletRequest request,
                               HttpServletResponse response)
      throws Exception {
    if (form instanceof uploadsForm) {//如果form是uploadsForm
        String encoding = request.getCharacterEncoding();
        if ((encoding != null) && (encoding.equalsIgnoreCase("utf-8")))
        {
            response.setContentType("text/html; charset=gb2312");//如果没有指定�~�码�Q�编码格式�ؓgb2312
        }
        UpLoadForm theForm = (UpLoadForm ) form;
        FormFile file = theForm.getTheFile();//取得上传的文�?br />        try {
          InputStream stream = file.getInputStream();//把文件读�?br />          String filePath = request.getRealPath("/");//取当前系�l��\�?br />          ByteArrayOutputStream baos = new ByteArrayOutputStream();
          OutputStream bos = new FileOutputStream(filePath + "/" +
                                                  file.getFileName());//建立一个上传文件的输出��?br />          //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);//��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");
    }
    return null;
}
}

UpLoadForm.java

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

/**
*

Title:UpLoadForm

Description: QRRSMMS

Company: jiahansoft

* @author wanghw
* @version 1.0
*/

public class UpLoadForm extends ActionForm {
public static final String ERROR_PROPERTY_MAX_LENGTH_EXCEEDED = "org.apache.struts.webapp.upload.MaxLengthExceeded";
protected FormFile theFile;
public FormFile getTheFile() {
      return theFile;
}
public void setTheFile(FormFile theFile) {
      this.theFile = theFile;
}
public ActionErrors validate(ActionMapping mapping, HttpServletRequest request)
{
      ActionErrors errors = null;
      //has the maximum length been exceeded?
      Boolean maxLengthExceeded = (Boolean)
              request.getAttribute(MultipartRequestHandler.ATTRIBUTE_MAX_LENGTH_EXCEEDED);
      if ((maxLengthExceeded != null) && (maxLengthExceeded.booleanValue()))
      {
          errors = new ActionErrors();
          errors.add(ERROR_PROPERTY_MAX_LENGTH_EXCEEDED, new ActionError("maxLengthExceeded"));
      }
      return errors;

}
}
//�q�是相对应的form�Q�还有其他属性可以设�|�，具体可以参考struts的上传例子�?br />

struts-config.xml

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Fisher 2007-01-16 17:50 发表评论

struts标签html

Fisher — Sat, 06 Jan 2007 01:55:00 GMT

struts标签html

�q�接内容

  paramId="参数�?
  paramName="page|request|response|session中存在的属性名"/>

  action="xxx.do"
  focus="焦点"
  method="GET|POST|DELETE|PUT|HEAD|OPTIONS" >








  初始�?lt;/html:button>


  初始�?lt;/html:submit>


  初始�?lt;/html:cancel>


  初始�?lt;/html:reset>


  初始�?lt;/html:image>


  初始�?lt;/html:checkbox>





  初始�?lt;/html:multibox>


      property="prptName"
    size="指定在网��上昄��的可选的数目"
    multiple="true|false,此属性用于指定列表是否允许多�?>

          value="�l�定的属性名"
      bundle="�pȝ��文�g中绑定的属性名"
      key="资源文�g中绑定的属�? >lable

          collection="Vector对象,此对象中攄��org.apache.struts.util.LabelValueBean对象"
      property="�|�页中的value值其��g��般是value"
      labelProperty="�|�页中显�C�的标签,其��g��般是lable"/>

          name="page|request|response|session中存在的属性名�U?
      property="属性对象中的成员变�?
      label="成员变量中的成员变量"
      value="成员变量中的成员变量" />

Fisher 2007-01-06 09:55 发表评论

struts标签logic

Fisher — Sat, 06 Jan 2007 01:55:00 GMT

struts标签logic

[]

  cookie="cookie中存在的变量�?>
  此处是输出内�?


  header="取得头部元素中存在的变量">
  此处是输出内�?


  name="属性名"
  property="对象中存在的成员变量"
  scope="page|request|response|session">
  此处是输出内�?


  cookie="cookie中可能存在的变量�?>
  此处是输出内�?


  header="头部元素中存在的变量">
  此处是输出内�?


  name="属性名"
  property="对象中可能存在的成员变量"
  scope="page|request|response|session">
  此处是输出内�?


  anchor=""
  forward=""
  href=""
  name=""
  page=""
  paramId=""
  paramName=""
  paramProperty=""
  paramScope=""
  property=""
  scope=""
  transaction="">�q�接内容

Fisher 2007-01-06 09:55 发表评论

struts标签bean

Fisher — Sat, 06 Jan 2007 01:54:00 GMT

struts标签bean

Fisher 2007-01-06 09:54 发表评论