以下是注解方式的struts2文件下载
@ResultPath("/")
@Results(value={@Result(name="success", type="stream",params={"contentType","image/jpg","inputName","targetFile","contentDisposition","attachment;filename=123.jpg","bufferSize","4096"})})
public class DownloadAction extends ActionSupport {
private InputStream targetFile;
public InputStream getTargetFile() {
//123.jpg文件必须存在,特别注意
//否则会抛异常 Can not find a java.io.InputStream with the name [targetFile]
//上边异常的解决参见 http://blog.csdn.net/wolma/article/details/5351638
return ServletActionContext.getServletContext().getResourceAsStream("/upload/123.jpg");
}
public void setTargetFile(InputStream targetFile) {
this.targetFile = targetFile;
}
}
@Results(value={@Result(name="success", type="stream",params={"contentType","image/jpg","inputName","targetFile","contentDisposition","attachment;filename=123.jpg","bufferSize","4096"})})
public class DownloadAction extends ActionSupport {
private InputStream targetFile;
public InputStream getTargetFile() {
//123.jpg文件必须存在,特别注意
//否则会抛异常 Can not find a java.io.InputStream with the name [targetFile]
//上边异常的解决参见 http://blog.csdn.net/wolma/article/details/5351638
return ServletActionContext.getServletContext().getResourceAsStream("/upload/123.jpg");
}
public void setTargetFile(InputStream targetFile) {
this.targetFile = targetFile;
}
}
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<a href="download.action">123.jpg</a>
</body>
</html>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<a href="download.action">123.jpg</a>
</body>
</html>