(struts2学习篇)struts2文件上传

超、凢脫俗 2023-10-18 20:54 76阅读 0赞

第一步：编写相关相关文件上传Action

public class UploadFileAction extends ActionSupport {
    
    	/**
    	 * 
    	 */
    	private static final long serialVersionUID = 1L;
    	// 相关属性封装
    	private File upload; // 上传文件
    
    	private String uploadContentType;// 上传文件类型
    	private String uploadFileName;// 上传文件名
    
    	private String filename;// 上传文件重新命名
    
    	private String upladPath;// 上传文件路径
    
    	private String result;// 上传结果
    
    	public File getUpload() {
    		return upload;
    	}
    
    	public void setUpload(File upload) {
    		this.upload = upload;
    	}
    
    	public String getUploadContentType() {
    		return uploadContentType;
    	}
    
    	public void setUploadContentType(String uploadContentType) {
    		this.uploadContentType = uploadContentType;
    	}
    
    	public String getUploadFileName() {
    		return uploadFileName;
    	}
    
    	public void setUploadFileName(String uploadFileName) {
    		this.uploadFileName = uploadFileName;
    	}
    
    	public String getFilename() {
    		return filename;
    	}
    
    	public void setFilename(String filename) {
    		this.filename = filename;
    	}
    
    	public String getUpladPath() {
    		return upladPath;
    	}
    
    	public void setUpladPath(String upladPath) {
    		this.upladPath = upladPath;
    	}
    
    	@Override
    	public String execute() throws Exception {
    		// TODO Auto-generated method stub
    		String file = "";
    		// 如果新文件名未输入，则使用上传文件的文件名，做为服务器保存文件的文件名
    		if (filename.equals("")) {
    			file = upladPath + uploadFileName;
    		} else {
    			file = upladPath + uploadFileName;
    		}
    		// 判读服务器是否存在同名的文件，否则相关的信息提示
    		if (new File(file).exists()) {
    			result = "该文件已经存在，请为文件重新命名";
    		} else {
    			FileOutputStream fileoutput = new FileOutputStream(file);
    			InputStream input = new FileInputStream(upload);
    			byte[] buffer = new byte[8192];
    			int count = 0;
    			while ((count = input.read(buffer)) > 0) {
    				fileoutput.write(buffer, 0, count);
    			}
    			fileoutput.close();
    			input.close();
    			result = "文件上传成功";
    		}
    		return "result";
    	}
    
    	public void setResult(String result) {
    		this.result = result;
    	}
    
    	public String getResult() {
    		return result;
    	}
    }

第二步：struts2.xml文件配置

<package name="fileupload" extends="struts-default">
    	<action name="fileupload" class="com.rf.action.UploadFileAction">
    	
    	<param name="upladPath">c:\upload\</param>
    	<result name="result">/error.jsp</result>	
    	</action>
    	</package>

第三步：jsp页面相关代码（文件上传页面）

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
    <%@taglib prefix="s" uri="/struts-tags"%>
    
    <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
    <html>
      <head>    
        <title>struts2文件上传实例代码</title>	
    	
      </head>  
      <body>
      
      <s:form action="fileupload" enctype="multipart/form-data">
         <s:file label="文件上传" name="upload"/>
         <s:textfield label="新文件名" name="filename"/>
         <s:submit value="上传"/>
      </s:form>
      </body>
    </html>

结果页面

结果展示：

![Center][]

![Center 1][]

[Center]: https://img-blog.csdn.net/20130724144822671?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center
[Center 1]: https://img-blog.csdn.net/20130724144854656?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvemhvdXpoaXdlbmdhbmc=/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/Center