smartUpload上传下载文件以及中文乱码

时间：2021-05-23 20:57:01

上传文件

index.jsp

<%-- 
    Document   : index.jsp
    Created on : 2016-8-14, 21:38:06
    Author     : nenujsj116
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <form action="upload.jsp" method="post" enctype="multipart/form-data" >  
            输入你的名字：<input type="text" name="yourName"/><br/>  
            选择上传的文件：<input type="file" name="files"/><br/>  
            <input type="submit" value="上传">  
        </form> 
    </body>
</html>

upload.jsp 

<%-- 
    Document   : upload
    Created on : 2016-8-14, 21:39:24
    Author     : nenujsj116
--%>

<%@page import="cn.edu.nenu.other.IPTimeStamp"%>
<%@page import="com.jspsmart.SmartUpload"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <%
            response.setCharacterEncoding("utf-8");
            request.setCharacterEncoding("UTF-8");
            SmartUpload sp= new SmartUpload();
            IPTimeStamp its = new IPTimeStamp(request.getRemoteAddr());
            sp.initialize(pageContext);//初始化上传  
            sp.upload();           //准备上传  
            String name = "";
            String yourname = sp.getRequest().getParameter("yourName");
            name = its.getIPTimeStampRand()+ "." + sp.getFiles().getFile(0).getFileExt();  
            String fileRealPathandName =request.getServletContext().getRealPath("/")+"images"+java.io.File.separator + name;  
            sp.getFiles().getFile(0).saveAs(fileRealPathandName);
        %>  
        <img alt="刚刚上传的图片" src="images/<%=name%>"> 
        <%=its.getIPTimeStampRand()%>
        <h3><%=yourname%></h3>  
        <h3><%=fileRealPathandName%></h3>  
    </body>
</html>
文件下载

download.jsp

<%-- 
    Document   : download
    Created on : 2016-8-18, 23:45:14
    Author     : nenujsj116
--%>

<%@page import="com.jspsmart.SmartUpload"%>
<%@page contentType="text/html" pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>JSP Page</title>
    </head>
    <body>
        <%
         String file_link = request.getParameter("link");
        SmartUpload su=new SmartUpload();  
        //初始化  
        su.initialize(pageContext);  
        //设定contentDisposition为null以禁止浏览器自动打开文件,  
        //保证点击连接后是下载文件。若不设定，则下载的文件扩展名为doc时，  
        //浏览器将自动用word打开。扩展名为pdf时，浏览器将用acrobat打开.  
        su.setContentDisposition(null);  
        //下载文件  
        su.downloadFile(file_link);    
        response.getOutputStream().close(); 
        %>
    </body>
</html>
如果用普通的 smartUpload上传文件，将会出现中文乱码，我试了很多种方法都没用，最后找到一种有效的

中文乱码，原博客

1，上传文件名乱码问题 
解决方法：把smartUpload.java类中的getDataHeader()方法中的

String s = new String(m_binArray, i, (j - i) + 1)
改为 

String s = new String(m_binArray, i, (j - i) + 1,"utf-8")
2,上传时传的参数乱码 
解决方法： 
把smartUpload.java类中的upload()方法中的 

String s11 = new String(m_binArray, m_startData,(m_endData - m_startData) + 1);
改为 

String s11 = new String(m_binArray, m_startData,(m_endData - m_startData) + 1,"utf-8");
修改后的 smartUpload包  http://download.csdn.net/detail/yimagudao/9620517可能使用时包名出现问题
整个测试项目地址 http://download.csdn.net/detail/yimagudao/9620518

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