标签：
在利用struts2完成上传文件到服务器时，遇到获取不到文件名
原因是在Action中的属性名没有和jsp中的属性名匹配
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <% 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>My JSP ‘main.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"> --> </head> <body> <h1>上传文件</h1> <form action="upload" method="post" enctype="multipart/form-data"> 请选择文件:<input type="file" name="file"/> <input type="submit" value="提交"/> </form> </body> </html>
Action:
import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class Upload extends ActionSupport{ private File file; private String fileContentType; private String fileFileName; public File getFile() { return file; } public void setFile(File file) { this.file = file; } public String getFileContentType() { return fileContentType; } public void setFileContentType(String fileContentType) { this.fileContentType = fileContentType; } public String getFileFileName() { return fileFileName; } public void setFileFileName(String fileFileName) { this.fileFileName = fileFileName; } public String upload(){ System.out.println(this.fileContentType); System.out.println(this.fileFileName); InputStream is=null; try { is=new FileInputStream(file); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } String path=ServletActionContext.getServletContext().getRealPath("/"); System.out.println(path); File toFile=new File(path, this.getFileFileName()); OutputStream os=null; try { os=new FileOutputStream(toFile); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } byte[] buffer=new byte[1024]; int length=0; try { while((length=is.read())>0){ os.write(buffer, 0, length); } is.close(); os.close(); } catch (Exception e) { // TODO: handle exception e.printStackTrace(); } return SUCCESS; } }
Action中该这样配置
private File file;
private String fileContentType;
private
String fileFileName;
ContentType和FileName是固定的，前缀为<input>中的name的值
标签：
原文地址：http://www.cnblogs.com/zyxiaohuihui/p/4521998.html
