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struts2的上传

2014-03-01 21:24 330 查看

第一种采用Servlet3.0的上传：

UploadServlet.java

package action;

import java.io.IOException;
import java.io.PrintWriter;
import java.util.Collection;

import javax.servlet.ServletException;
import javax.servlet.annotation.MultipartConfig;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.Part;
//注释3.0版本使用
@MultipartConfig
public class UploadServlet extends HttpServlet {

/**
*
*/
private static final long serialVersionUID = 1L;

@Override
protected void service(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
Part part=request.getPart("file");
response.setContentType("text/html;charset=GBK");
PrintWriter out=response.getWriter();
String fileName=request.getParameter("name");
out.println("上传文件的类型："+part.getContentType()+"<br/>");
out.println("上传文件大小："+part.getSize()+"<br/>");
Collection<String> headerNames=part.getHeaderNames();
for(String headerName:headerNames){
out.println(headerName+"---->"+part.getHeader(headerName)+"<br/>");

}
part.write(getServletContext().getRealPath("/uploadFiles")+"/"+fileName);
}

}

web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_9" version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<servlet>
<servlet-name>upload</servlet-name>
<servlet-class>action.UploadServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>upload</servlet-name>
<url-pattern>/uploadServlet</url-pattern>
</servlet-mapping>
</web-app>

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">

</head>

<body>
<form action="/Uploads/uploadServlet" method="post" enctype="multipart/form-data">
文件名：<input type="text" name="name"/>
文件：<input type="file" name="file"/>
<input type="submit"/>
</form>
</body>
</html>

第二种采用struts2文件上传：

UploadAction.java

package action;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;

import org.apache.struts2.ServletActionContext;

import com.opensymphony.xwork2.ActionSupport;

public class UploadAction extends ActionSupport {
/**
*
*/
private static final long serialVersionUID = 1L;
private String title;
private File uploadfile;
private String uploadfileContentType;
private String uploadfileFileName;
private String savePath;

public String upload() throws Exception {
FileInputStream fis = new FileInputStream(getUploadfile());
FileOutputStream fos=new FileOutputStream(getSavePath()+"\\"+getUploadfileFileName());
byte[] buffer=new byte[1024];
int len=0;
while((len=fis.read(buffer))>0){
fos.write(buffer,0,len);
}
fos.close();
fis.close();

return SUCCESS;
}

public String getTitle() {
return title;
}

public void setTitle(String title) {
this.title = title;
}

public File getUploadfile() {
return uploadfile;
}

public void setUploadfile(File uploadfile) {
this.uploadfile = uploadfile;
}

public String getUploadfileContentType() {
return uploadfileContentType;
}

public void setUploadfileContentType(String uploadfileContentType) {
this.uploadfileContentType = uploadfileContentType;
}

public String getUploadfileFileName() {
return uploadfileFileName;
}

public void setUploadfileFileName(String uploadfileFileName) {
this.uploadfileFileName = uploadfileFileName;
}

public String getSavePath() {
return ServletActionContext.getServletContext().getRealPath(savePath);//得到绝对路径
}

public void setSavePath(String savePath) {
this.savePath = savePath;
}

}

struts.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">
<struts>

<package name="hello" namespace="/hello" extends="struts-default">
<action name="login" class="action.UploadAction" method="upload">
<param name="savePath">/uploadFiles</param>
<result name="success">
/success.jsp
</result>
</action>
</package>
</struts>

success.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@taglib prefix="s" uri="/struts-tags"%>

</head>

<%
String path = request.getContextPath();
System.out.println(path);
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
System.out.println(basePath);
%>
<body>
上传成功！<br>
文件标题：<s:property value="title"/><br>
文件为:<img src="<%=basePath%><s:property value="'uploadFiles/'+uploadfileFileName"/>"/><br>
</body>
</html>

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">

</head>

<body>
<form action="/Upload/hello/login" method="post" enctype="multipart/form-data">
文件名：<input type="text" name="title"/>
文件：<input type="file" name="uploadfile"/>
<input type="submit"/>
</form>
</body>
</html>

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