java组件smartupload实现上传文件功能
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2024-03-12 11:26:02
使用jsp和serlvet来实现最简单的上传，供大家参考，具体内容如下
1、页面index.jsp
<%@ page language="java...
使用jsp和serlvet来实现最简单的上传，供大家参考，具体内容如下
1、页面index.jsp
<%@ page language="java" 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>index.jsp</title> <meta http-equiv="pragma" content="no-cache"> <meta http-equiv="cache-control" content="no-cache"> <meta http-equiv="expires" content="0"> </head> <body> <form action="upload" method="post" enctype="multipart/form-data"> <br> 姓名：<input type="text" name="uname"/> <br> 上传文件:<input type="file" name="pic"/> <br> <input type="submit" value="提交"></input> </form> </body> </html>
2、action跳转到了upload的servlet，所以要web.xml里面配置，web.xml:
<?xml version="1.0" encoding="utf-8"?> <web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" xsi:schemalocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"> <servlet> <servlet-name>uploadaction</servlet-name> <servlet-class>com.pop.action.smartuploadaction</servlet-class> </servlet> <servlet-mapping> <servlet-name>uploadaction</servlet-name> <url-pattern>/upload/*</url-pattern> </servlet-mapping> <welcome-file-list> <welcome-file>index.jsp</welcome-file> </welcome-file-list> </web-app>
3、映射到的action文件，smartuploadaction.java:
package com.pop.action;
import java.io.ioexception;
import javax.servlet.servletexception;
import javax.servlet.http.httpservlet;
import javax.servlet.http.httpservletrequest;
import javax.servlet.http.httpservletresponse;
import javax.servlet.jsp.jspfactory;
import javax.servlet.jsp.pagecontext;
import com.soft4j.httpupload4j.request;
import com.soft4j.httpupload4j.smartupload;
import com.soft4j.httpupload4j.smartuploadexception;
public class smartuploadaction extends httpservlet {
private static final long serialversionuid = -8610555375032925108l;
@override
protected void dopost(httpservletrequest req, httpservletresponse resp)
throws servletexception, ioexception {
req.setcharacterencoding("utf-8");
resp.setcharacterencoding("utf-8");
smartupload su = new smartupload();
// 由于multipart/form-data的传输原因导致req不能使用，所以使用smartupload产生的request
request reqest = su.getrequest();
// 获得pagecontext对象
pagecontext pagecontext = jspfactory.getdefaultfactory()
.getpagecontext(this, req, resp, null, true, 8192, true);
su.initialize(pagecontext);
try {
su.upload();
// 上传到本项目的upload目录
su.save("upload");
} catch (smartuploadexception e) {
e.printstacktrace();
}
// 使用smartupload产生的reqest对象来获得页面传递的参数
string uname = reqest.getparameter("uname");
system.out.println(uname);
}
}
最后说明：使用的组件包为smartupload.zip。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。