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[xPlugin] smartupload jsp图片上传

2024-08-09 00:26:25   219人阅读

URL:http://www.cnblogs.com/ISeeYouBlogs/p/jsp.html

 

1.要实现图片上传，首先需要一个组件，这里我用的是smartupload.jar可以到这里下载http://download.csdn.net/detail/mengdecike/8279247

2.下载之后把这个文件直接复制到WebContent/WEB-INF/lib下面

3.jsp页面

 1 <%@ page language="java" contentType="text/html; charset=UTF-8" 2     pageEncoding="UTF-8"%> 3 <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 4 <html> 5 <head> 6 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 7 <title>Insert title here</title> 8 </head> 9 <body>10 <form action="UpLoad" method="post" enctype="multipart/form-data" name="form1">11   <p>用户名：12     <label for="username"></label>13   <input type="text" name="username" id="username">14   </p>15   <p>头　像：16     <label for="photo"></label>17     <input type="file" name="photo" id="photo">18   </p>19   <p>20     <input type="submit" name="button" id="button" value="http://www.mamicode.com/提 交">21   </p>22 </form>23 </body>24 </html>

4.上传的servlet代码如下：

 1         
           request.setCharacterEncoding("utf-8");//设置字符 2         response.setContentType("text/html;charset=utf-8"); 3         response.setCharacterEncoding("utf-8"); 4         PrintWriter out =response.getWriter();//获取out输出对象 5          6         // 准备上传目录 7         String path = this.getServletContext().getRealPath("images"); 8         File fpath = new File(path); 9         if(!fpath.exists()){10             fpath.mkdir();11         }12         13         // 实例化组件14         SmartUpload su = new SmartUpload("utf-8");15         // 初始化组件16         su.initialize(this.getServletConfig(), request, response);17         18         try {19             // 限定20             su.setAllowedFilesList("jpg,png,gif");21             su.setMaxFileSize(50*1024); // 不能超过50K22             23             // 上传并提取文件24             su.upload();25             SmartFile file = su.getFiles().getFile(0);26             // 生成文件名27             String fname = new Date().getTime()+"."+file.getFileExt();28             // 保存文件29             file.saveAs(path+"/"+fname);30             //file.saveAs(path+"/"+fname,1);31             // 提示32             out.println("<script>alert(‘文件上传成功！‘);location.href=http://www.mamicode.com/‘upload.jsp‘;</script>");33             34             // 提取字段信息35             String username = su.getRequest().getParameter("username");36             System.out.println(">>> " + username);37             38             // 进行数据库操作39         40             41         } catch(SecurityException e){42             out.println("<script>alert(‘只能上传jpg、png、gif的文件并且不能超过50K！‘);history.back();</script>");43             e.printStackTrace();44         }45         catch (SmartUploadException e) {46             // TODO Auto-generated catch block47             out.println("<script>alert(‘文件上传失败！‘);history.back();</script>");48             e.printStackTrace();49         }50

[xPlugin] smartupload jsp图片上传


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