struts文件上传demo
2015-12-28 09:02
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//前端代码
<%@ page language="java" contentType="text/html; charset=gb2312" pageEncoding="gb2312"%> <%@taglib prefix="s" uri="/struts-tags"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>上传文件</title> </head> <body> <!-- 上传文件表单定义 --> <s:form action="upload" method="post" enctype="multipart/form-data"> <tr> <!-- 上传文件标签定义 --> <td>上传文件:<s:file name="file"></s:file></td> </tr> <tr> <td>再次上传文件:<s:file name="file"></s:file></td> </tr> <tr> <td align="left"><s:submit name="submit" value="提交"></s:submit></td> </tr> </s:form> </body> </html>
后台代码
package action;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
//文件上传Action
public class UploadAction extends ActionSupport {
//上传文件存放路径
private final static String UPLOADDIR = "/upload";
//上传文件集合
private List<File> file;
//上传文件名集合
private List<String> fileFileName;
//上传文件内容类型集合
private List<String> fileContentType;
public List<File> getFile() {
return file;
}
public void setFile(List<File> file) {
this.file = file;
}
public List<String> getFileFileName() {
return fileFileName;
}
public void setFileFileName(List<String> fileFileName) {
this.fileFileName = fileFileName;
}
public List<String> getFileContentType() {
return fileContentType;
}
public void setFileContentType(List<String> fileContentType) {
this.fileContentType = fileContentType;
}
public String execute() throws Exception {
for (int i = 0; i < file.size(); i++) {
//循环上传每个文件
uploadFile(i);
}
return "success";
}
//执行上传功能
private void uploadFile(int i) throws FileNotFoundException, IOException {
try {
InputStream in = new FileInputStream(file.get(i));
String dir = ServletActionContext.getRequest().getRealPath(UPLOADDIR);
File uploadFile = new File(dir, this.getFileFileName().get(i));
OutputStream out = new FileOutputStream(uploadFile);
byte[] buffer = new byte[1024 * 1024];
int length;
while ((length = in.read(buffer)) > 0) {
out.write(buffer, 0, length);
}
in.close();
out.close();
} catch (FileNotFoundException ex) {
ex.printStackTrace();
} catch (IOException ex) {
ex.printStackTrace();
}
}
}
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