struts1.2上传文件到服务器

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struts1.2上传文件到服务器

2013年03月10日 ⁄ 综合 ⁄ 共 2790字 ⁄ 字号小中大 ⁄ 评论关闭

利用了struts1.2的jar包，如何添加jar包：如果用Eclipse可以在项目上右键直接从MyEclipse-->Add struts .

如图

然后开始编码，步骤如下：

1.页面：

<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="gb2312"%>

           <form action="<%=request.getContextPath() %>/admin/HtmlFile.do" method="post" enctype="multipart/form-data" name="HtmlFileForm">
                        <input type="file" name="file" /> 
                    <html:submit />
                    </form>
</body>

</html>

2.写文件Form

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

public class HtmlFileForm extends ActionForm {
    private static final long serialVersionUID = -8008580023746850586L;
    public HtmlFileForm() {
    }
    private FormFile file;
    public FormFile getFile() {
        return this.file;
    }
    public void setFile(FormFile file) {
        this.file = file;
    }
    private String fname;
    public String getFname() {
        return fname;
    }
    public void setFname(String fname) {
        this.fname = fname;
    }
    private String size;
    public String getSize() {
        return size;
    }
    public void setSize(String size) {
        this.size = size;
    }
}

3.写Action

import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;

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 org.apache.struts.upload.FormFile;

public class HtmlFileAction extends Action {

    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        String dir = servlet.getServletContext().getRealPath("/upload");
        HtmlFileForm hff = (HtmlFileForm) form;
        FormFile file = hff.getFile();
        // if no file was uploaded,then display View
        if (file == null) {
            return mapping.findForward("fail");
        }
        // Get name and file size
        String fname = file.getFileName();
        String size = Integer.toString(file.getFileSize()) + "bytes";

InputStream streamIn = file.getInputStream();
OutputStream streamOut = new FileOutputStream(dir + "/" + fname);

        int bytesRead = 0;
        byte[] buffer = new byte[8192];
        while((bytesRead = streamIn.read(buffer,0,8192))!=-1){
            streamOut.write(buffer,0,bytesRead);
        }

        streamOut.close();
        streamIn.close();

        //
        hff.setFname(fname);

        //Clean up our toys when done playing
        file.destroy();

        //Forward to default display
        request.setAttribute("inputfile", fname);
        return mapping.findForward("success");
    }
}