Java strtus2文件下载不同浏览器文件名中文乱码处理

红太狼 2022-08-05 18:58 153阅读 0赞

在IE，FF，chrome中文件名都不会乱码，在其他浏览器中，请参考《[不同浏览器上中文文件名的下载乱码问题][Link 1]》

jsp：

<a href="<%=path %>/downloadProFile.action?fileName=${data.app_name }&fileUrl=${data.app_url }">下载</a>

strtus：

<action name="downloadProFile" class="com.actions.DownloadAction">
    		    <result name="success" type="stream">
    		    
    		    <param name="contentType">application/octet-stream;charset=ISO8859-1</param> 
    		    
    		    <param name="inputName">inputStream</param>
    		    
    		    <param name="contentDisposition">attachment;filename="${downloadFileName}"</param>
    		    
    		    <param name="bufferSize">4096</param>
    		    </result>
    		 </action>

DownloadAction.java

package com.actions;
    
    import java.io.File;
    import java.io.IOException;
    import java.io.InputStream;
    import java.io.UnsupportedEncodingException;
    import java.net.URLEncoder;
    import java.text.SimpleDateFormat;
    import java.util.Date;
    
    import org.apache.struts2.ServletActionContext;
    
    import com.actions.common.BaseAction;
    import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.MimeUtility;
    
    /**
     * 功能：下载
     * @author Adam
     *
     */
    public class DownloadAction extends BaseAction {
    	//兼容linux
    	String fs = System.getProperties().getProperty("file.separator");
    	protected String configPath = "attached";
    	protected String dirTemp = "attached"+fs+"temp"; 
    	public String downloadFileName;
    	public InputStream inputStream;
    	
    	/**
    	 * 功能：设置返回下载文件名
    	 * @return
    	 */
    	public String getDownloadFileName() {
    		String fileName = getRequest().getParameter("fileName").trim();
    		String agent = getRequest().getHeader("USER-AGENT");
    		try {
    			fileName = new String(fileName.getBytes("ISO8859-1"),"UTF-8");
        		if(null != agent && -1 != agent.indexOf("MSIE")){
        			fileName = URLEncoder.encode(fileName,"UTF8");
        			//将加号还原为空格(URLEncoder.encode()会将空格转成加号)
        			fileName = fileName.replaceAll("\\+", "%20");
        		}else if(null != agent && -1 != agent.indexOf("Mozilla")){
        			fileName = MimeUtility.encodeText(fileName,"UTF8","B");
    		    }
    		} catch (UnsupportedEncodingException e) {
    			e.printStackTrace();
    		}
    		return fileName;
    	}
    
    	public void setDownloadFileName(String downloadFileName) {
    		this.downloadFileName = downloadFileName;
    	}
    
    	/**
    	 * 功能：下载文件，设置文件流
    	 * File.separator
    	 * @return
    	 */
    	public InputStream getInputStream() {
    		String fileUrl = getRequest().getParameter("fileUrl").trim();
    		fileUrl = fileUrl.replace("/", fs);
            String savePath = getSession().getServletContext().getRealPath(fs) + configPath; 
            String realPath = fs + configPath + fs + fileUrl;
            File file = new File(savePath + fs + fileUrl);
    		if (file.isFile() && file.exists()) {
    			getLog().logger.error("realPath:" + realPath);
    			System.out.println(realPath);
    			return ServletActionContext.getServletContext().getResourceAsStream(realPath);
    		}else{
    	        String tempPath = getSession().getServletContext().getRealPath(fs) + dirTemp;
    	        SimpleDateFormat sdf = new SimpleDateFormat("yyyyMM");  
    	        String ymd = sdf.format(new Date());
    	        tempPath += fs + ymd + fs;
    	        File dirTempFile = new File(tempPath);
    	        if (!dirTempFile.exists()) {
    	            dirTempFile.mkdirs();  
    	        }
    	        File f = new File(tempPath + this.getDownloadFileName());
    	        if (!f.exists()) {
    	        	try {
    					f.createNewFile();
    				} catch (IOException e) {
    					e.printStackTrace();
    				}
    	        }
    			String inExistPath = fs + dirTemp + fs + ymd + fs + this.getDownloadFileName();
    			return ServletActionContext.getServletContext().getResourceAsStream(inExistPath);
    		}
    	}
    	
    	public void setInputStream(InputStream inputStream) {
    		this.inputStream = inputStream;
    	}
    
    	public String execute() {
    		return "success";
    	}
    }

[Link 1]: http://blog.csdn.net/duke147/article/details/41694151