struts2动态上传多文件的实现（内附JavaScript代码）

package com.dfmc.action; import java.io.BufferedInputStream; import java.io.BufferedOutputStream; import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStream; import java.io.OutputStream; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class FileUploadAction extends ActionSupport { private static final long serialVersionUID = 1L; private static final int BUFFER_SIZE = 16 * 1024 ; private File[] file; private String[] fileName; private String[] contentType; public String[] getContentType() { return contentType; } public void setFileContentType(String[] contentType) { this.contentType = contentType; } public File[] getFile() { return file; } public void setFile(File[] file) { // File[] file =new File[filePaths.length]; // for(int i=0;i<filePaths.length;i++){ // System.out.println(filePaths[i]); // File f = new File(filePaths[i]); // file[i]=f; // } this.file = file; } public String[] getFileName() { return fileName; } public void setFileFileName(String[] fileName) { this.fileName = fileName; } private static void copy(File src, File dst) { try { InputStream in = null; OutputStream out = null; try { //输入到缓冲流 in = new BufferedInputStream(new FileInputStream(src), BUFFER_SIZE); out = new BufferedOutputStream(new FileOutputStream(dst), BUFFER_SIZE); byte[] buffer = new byte[BUFFER_SIZE]; int i = 0; while ((i=in.read(buffer)) != -1) { out.write(buffer,0,i); i=0; } } finally { if (null != in) { in.close(); } if (null != out) { out.close(); } } } catch (Exception e) { e.printStackTrace(); } } public String fileUpload() { // // HttpServletRequest request = ServletActionContext.getRequest(); // String[] paths = request.getParameterValues("file"); // this.setFile(paths); for(int i=0;i<this.getFile().length;i++){ System.out.println("=================" + fileName[i] + "=========" + ServletActionContext.getServletContext().getRealPath( "WebRoot/UploadImages")); File dstFile = new File(ServletActionContext.getServletContext() .getRealPath("/UploadImages") + "/" + fileName[i]); copy(file[i], dstFile); } // HttpServletRequest request = ServletActionContext.getRequest(); // request.setAttribute("filenames", fileName); return SUCCESS; } }