1---导入包
jspsmartupload.jar
2---jsp页面
<body>
<a href="DoDownloadServlet?filename=1.jpg">点击下载</a>
</body>
3---servlet
package download;
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.jspsmart.upload.SmartUpload;
import com.jspsmart.upload.SmartUploadException;
public class DoDownloadServlet extends HttpServlet {
@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//得到下载文件的名称
String fileName=new String(request.getParameter("filename").getBytes("ISO-8859-1"),"GB2312");
//新建一个smarUpload对象
SmartUpload su=new SmartUpload();
PageContext pagecontext=JspFactory.getDefaultFactory().getPageContext(this, request, response, null, true, 8192, true);
//初始化
su.initialize(pagecontext);
su.setContentDisposition(null);
//下载文件
try {
su.downloadFile("e:\\share\\"+fileName);
} catch (SmartUploadException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}