1、package元素，除了有name和extends属性，还有abstract属性：这个属性说明这个包是个抽象包，类似抽象类，不能直接使用，只能定义一个子包，然后extends这个abstract包。struts-default这个package就是abstract的，因此需要我们继承这个包来使用。
namespace属性：起到命名空间分割的作用。通常将namespace的属性值定义成页面所在的目录名。
2、使用input file进行文件上传：
<%@ 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 'fileUpload.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>
<form action="fileUploadResult.jsp" method="post" enctype="multipart/form-data">
username:<input type="text" name="username"><br>
file:<input type="file" name="file"><br>
<input type="submit" value="submit">
</form>
</body>
</html>
一个显示页面：
<%@ page language="java" import="java.util.*,java.io.*" 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 'fileUploadResult.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>
<%
InputStream is = request.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String buffer = null;
while(null != (buffer = br.readLine()))
{
out.print(buffer + "<br>");
}
%>
</body>
</html>
注意的是，在输入页面，要进行文件上传，form必须使用post方法，而且要使用enctype=multipart/form-data，显示页面要使用io的形式读取传递过来的数据，如果使用request.getParameter()，结果会显示null。
进行文件上传时，必须将表单的method属性设置为post，将enctype属性设置为multipart/form-data
3、使用apache提供的组件进行文件上传：
下载commons-fileupload-1.3-bin.zip和其要依赖的组件包：commons-io-2.2-bin.zip，将其放入WebRoot/WEB-INF/lib目录下，上传文件页面fileUpload.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 'fileUpload.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>
<form action="UploadServlet" method="post" enctype="multipart/form-data">
username:<input type="text" name="username"><br>
file1:<input type="file" name="file"><br>
file2:<input type="file" name="file2"><br>
<input type="submit" value="submit">
</form>
</body>
</html>
使用servlet进行文件上传处理：UploadServlet：
package com.cdtax.servlet;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;
public class UploadServlet extends HttpServlet
{
@Override
protected void doPost(HttpServletRequest req, HttpServletResponse resp)
throws ServletException, IOException
{
DiskFileItemFactory factory = new DiskFileItemFactory();
String path = req.getRealPath("/upload");
factory.setRepository(new File(path));
factory.setSizeThreshold(1024 * 1024);
ServletFileUpload upload = new ServletFileUpload(factory);
try
{
List<FileItem> list = (List<FileItem>)upload.parseRequest(req);
for(FileItem item : list)
{
String name = item.getFieldName();
if(item.isFormField())
{
String value = item.getString();
System.out.println(name + "=" + value);
req.setAttribute(name, value);
}
else
{
String value = item.getName();
int start = value.lastIndexOf("\\");
String fileName = value.substring(start + 1);
req.setAttribute(name, fileName);
// item.write(new File(path,fileName)); //组件提供的文件写入本地磁盘方法，下面是自己控制文件写入磁盘，主要是为了可以进行进度提示处理，组件的方法无法完成这个功能。
OutputStream os = new FileOutputStream(new File(path,fileName));
InputStream is = item.getInputStream();
byte[] buffer = new byte[400];
int length = 0;
while((length = is.read(buffer)) != -1)
{
os.write(buffer,0,length);
}
is.close();
os.close();
}
}
}
catch(Exception e)
{
e.printStackTrace();
}
req.getRequestDispatcher("fileUploadResult.jsp").forward(req, resp);
}
}
在这个servlet中用到了apache的文件上传组件，组要是DiskFileItemFactory、ServletFileUpload、FileItem、
最后的显示页面：
<%@ page language="java" import="java.util.*,java.io.*" 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 'fileUploadResult.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>
<%
/*
InputStream is = request.getInputStream();
BufferedReader br = new BufferedReader(new InputStreamReader(is));
String buffer = null;
while(null != (buffer = br.readLine()))
{
out.print(buffer + "<br>");
}
*/
%>
username:${requestScope.username }<br>
file:${requestScope.file }<br>
file2:${requestScope.file2 }<br/>
</body>
</html>
4、使用struts框架实现文件上传
struts框架也是借助于apache的文件上传组件。
struts2有一个默认的属性文件，在struts2-core-2.3.14.jar包下的org.apache.struts2下，名字叫做default.properties，里面配置了一些struts框架的属性，如：
struts.action.extension=action,,等等，如果需要修改struts2的默认属性配置，需要在src目录下建立一个属性文件：struts.properties，然后写上要自定义的配置项，如：
struts.action.extension=do 等等，就是覆盖default.properties的属性设置（default.properties是只读的）
使用struts2框架实现文件上传：一个输入页面：fileUpload.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 'fileUpload.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>
<form action="uploadAction.action" method="post" enctype="multipart/form-data">
username:<input type="text" name="username"><br>
file1:<input type="file" name="file"><br>
<input type="submit" value="submit">
</form>
</body>
</html>
一个Action：UploadAction
package com.cdtax.struts2;
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 UploadAction extends ActionSupport
{
private String username;
private File file; //输入页面表单<input type="file" name="file">,name的值
private String fileFileName;//变量命名是规范的，就是输入页面file的name值+FileName（这个是固定的）
private String fileContentType;//变量命名是规范的，就是输入页面file的name值+ContentType（这个是固定的）
public String getFileFileName()
{
return fileFileName;
}
public void setFileFileName(String fileFileName)
{
this.fileFileName = fileFileName;
}
public String getFileContentType()
{
return fileContentType;
}
public void setFileContentType(String fileContentType)
{
this.fileContentType = fileContentType;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public File getFile()
{
return file;
}
public void setFile(File file)
{
this.file = file;
}
@Override
public String execute() throws Exception
{
System.out.println(fileFileName);
System.out.println(file.getName());
String root = ServletActionContext.getRequest().getRealPath("/upload");
InputStream is = new FileInputStream(file);
File destFile = new File(root,fileFileName);
OutputStream os = new FileOutputStream(destFile);
byte[] buffer = new byte[400];
int length = 0;
while(-1 != (length = is.read(buffer)))
{
os.write(buffer,0,length);
}
is.close();
os.close();
return SUCCESS;
}
}
要注意这里的file，是已经保存到临时目录中的临时文件。
配置struts.xml，添加action
<action name="uploadAction" class="com.cdtax.struts2.UploadAction"> <result name="success">/fileUploadResult.jsp</result> </action>
最后一个输出结果页面，fileUploadResult.jsp：
<%@ page language="java" import="java.util.*,java.io.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
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 'fileUploadResult.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>
username:<s:property value="username"/>
fllename:<s:property value="fileFileName"/>
filecontexttype:<s:property value="fileContentType" />
</body>
</html>
这里使用了struts的标签库。
struts2在进行文件上传操作时，实际上是通过两个步骤实现的：
1）首先将客户端上传的文件保存到struts.multipart.saveDir键所指定的目录中，如果该键所对应的目录不存在，那么就保存到javax.servlet.context.tempDir环境变量所指定的目录中。
2）Action中所定义的File类型的成员变量file实际上指向的是临时目录中的临时文件，然后在服务器端通过IO的方式将临时文件写入到指定的服务器端目录中。
在完成上述代码运行时，总是提示org.apache.commons.fileupload.FileUploadBase$SizeLimitExceededException：the request was rejected because its size (64594527) exceeds the configured maximum (2097152)，无法完成上传，问题的原因是struts2框架规定了默认的上传文件大小为2097152，即2M，是在struts2默认的属性文件，struts2-core-2.3.14.jar包下的org.apache.struts2下，名字叫做default.properties中的struts.multipart.maxSize=2097152规定的，解决的方法有两个：一个是在struts.xml中添加<constant
name="struts.multipart.maxSize" value="10485760"/>，value规定文件大小，二是在struts.properties中定义：struts.multipart.maxSize=2097152000
struts.properties的优先级高。
如果没有定义struts.multipart.saveDir，会出现：信息: Unable to find 'struts.multipart.saveDir' property setting. Defaulting to javax.servlet.context.tempdir
因为在default.properties中struts.multipart.saveDir值为空，没定义，我们可以在struts.properties中定义，这是临时文件保存的地方，没定义，默认在javax.servlet.context.tempdir指定的目录下，就是D:\apache-tomcat-6.0.36\work\Catalina\localhost\struts2，项目的根目录下。
5、OGNL（Object Graph Navigation Language）对象图导航语言。struts标签库就是借助OGNL实现的。
6、多文件上传
一个上传输入页面fileUpload2.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 'fileUpload2.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>
<form action="uploadAction2.action" method="post" enctype="multipart/form-data">
username:<input type="text" name="username"><br>
file1:<input type="file" name="file"><br>
file2:<input type="file" name="file"><br>
file3:<input type="file" name="file"><br>
<input type="submit" value="submit">
</form>
</body>
</html>
一个action：UploadAction2
package com.cdtax.struts2;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.List;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class UploadAction2 extends ActionSupport
{
private String username;
private List<File> file;
private List<String> fileFileName;
private List<String> fileContentType;
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
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;
}
@Override
public String execute() throws Exception
{
for(int i = 0; i < file.size(); i++)
{
InputStream is = new FileInputStream(file.get(i));
String root = ServletActionContext.getRequest().getRealPath("/upload");
File destFile = new File(root,fileFileName.get(i));
OutputStream os = new FileOutputStream(destFile);
byte[] buffer = new byte[400];
int length = 0;
while(-1 !=(length = is.read(buffer)))
{
os.write(buffer,0,length);
}
is.close();
os.close();
}
return SUCCESS;
}
}
配置struts.xml，添加action
<action name="uploadAction2" class="com.cdtax.struts2.UploadAction2"> <result name="success">/fileUploadResult2.jsp</result> </action>
一个最后的输出结果页面：
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib prefix="s" uri="/struts-tags" %>
<%
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 'fileUploadResult2.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>
username:<s:property value="username"/>
<s:iterator value="fileFileName" id="f">
file:<s:property value="#f" /><br/>
</s:iterator>
<s:iterator value="fileContentType" id="n">
contenttype:<s:property value="#n"/><br/>
</s:iterator>
</body>
</html>
要注意，输入页面的多个file，其name值要相同，在action中，定义成员变量要定义为集合。
7、<iterator>标签：很重要。
OGNL有一个根元素，如果不是根元素，就使用#表示，如file:<s:property value="#f" />
8、struts的文件上传也是使用拦截器来处理的，在struts-default.xml中有interceptor为fileUpload的拦截器，具体为FileUploadInterceptor
9、文件的下载：
一个下载页面download.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 'download.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="downloadFile.action">xiazai</a>
</body>
</html>
一个处理下载的action
package com.cdtax.struts2;
import java.io.InputStream;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class DownloadAction extends ActionSupport
{
public InputStream getDownloadFile()
{
return ServletActionContext.getServletContext().getResourceAsStream("/upload/commons.zip");
}
@Override
public String execute() throws Exception
{
return SUCCESS;
}
}
struts.xml中进行配置：
<action name="downloadFile" class="com.cdtax.struts2.DownloadAction"> <result type="stream"> <param name="ContentDisposition">attachment;filename="commons.zip"</param> <param name="inputName">downloadFile</param> </result> </action>
需要注意的地方：action中提供了一个方法获得输入流，这个方法的命名要与配置文件中<param name="inputName">downloadFile</param>对应起来，这里是downloadFile，方法就是getDownloadFile；action的方法返回的流是实际文件，如("/upload/commons.zip对应磁盘上的文件，配置文件中也有一个filename，这个文件名是展现给用户下载对话框中的文件名，对于<param name="ContentDisposition">attachment;filename="commons.zip"</param>如果没有指定attachment，默认为inline的，对于像exe等文件，弹出下载对话框，而对于txt等文件，直接在页面显示内容，加上attachment，无论什么文件，都弹出下载对话框。
对于下载文件，action配置的result类型type为stream
改进：
<%@ 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 'download.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="downloadFile2.action?num=2">xiazai</a>
</body>
</html>
package com.cdtax.struts2;
import java.io.InputStream;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class DownloadAction2 extends ActionSupport
{
private int num;
private String filename;
public String getFilename()
{
return filename;
}
public void setFilename(String filename)
{
this.filename = filename;
}
public int getNum()
{
return num;
}
public void setNum(int num)
{
this.num = num;
}
public InputStream getDownloadFile()
{
if(1 == num)
{
this.filename = "comments.zip";
return ServletActionContext.getServletContext().getResourceAsStream("/upload/commons.zip");
}
else
{
this.filename = "struts2.3.14.zip";
return ServletActionContext.getServletContext().getResourceAsStream("/upload/struts-2.3.14-all.zip");
}
}
}
<action name="downloadFile2" class="com.cdtax.struts2.DownloadAction2">
<result type="stream">
<param name="ContentDisposition">attachment;filename=${filename}</param>
<param name="inputName">downloadFile</param>
</result>
</action>
根据客户端传递的参数不同下载不同的文件
10、中文乱码问题：
对action进行改进
package com.cdtax.struts2;
import java.io.InputStream;
import org.apache.struts2.ServletActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class DownloadAction2 extends ActionSupport
{
private int num;
private String filename;
public String getFilename()
{
return filename;
}
public void setFilename(String filename)
{
this.filename = filename;
}
public int getNum()
{
return num;
}
public void setNum(int num)
{
this.num = num;
}
public InputStream getDownloadFile()
{
try
{
if(1 == num)
{
this.filename = "中文comments.zip";
this.filename = new String(this.filename.getBytes("gbk"),"iso8859_1");
return ServletActionContext.getServletContext().getResourceAsStream("/upload/commons.zip");
}
else
{
this.filename = "中文struts2.3.14.zip";
this.filename = new String(this.filename.getBytes("gbk"),"iso8859_1");
return ServletActionContext.getServletContext().getResourceAsStream("/upload/struts-2.3.14-all.zip");
}
}
catch(Exception e)
{
e.printStackTrace();
}
return null;
}
}
使用new String(this.filename.getBytes("gbk"),"iso8859_1");进行转码
11、struts2可以使用struts2-convention-plugin-2.3.14.jar插件实现基于注解的配置
package com.cdtax.struts2;
import java.util.Date;
import org.apache.struts2.convention.annotation.Action;
import org.apache.struts2.convention.annotation.ExceptionMapping;
import org.apache.struts2.convention.annotation.ExceptionMappings;
import org.apache.struts2.convention.annotation.InterceptorRef;
import org.apache.struts2.convention.annotation.InterceptorRefs;
import org.apache.struts2.convention.annotation.ParentPackage;
import org.apache.struts2.convention.annotation.Result;
import com.cdtax.bean.User;
import com.cdtax.service.LoginService;
import com.cdtax.service.impl.LoginServiceImpl;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
@ParentPackage("struts-default")
@Action(value="login",results={
@Result(name="success",location="/result.jsp"),
@Result(name="input",location="/login.jsp")})
@InterceptorRef("defaultStack")
@InterceptorRefs({@InterceptorRef(""),@InterceptorRef("")})
@ExceptionMapping(exception = "", result = "")
@ExceptionMappings({})
public class LoginAction extends ActionSupport
{
private String username;
private String password;
private int age;
private Date date;
private LoginService loginService = new LoginServiceImpl();
public Date getDate()
{
return date;
}
public void setDate(Date date)
{
this.date = date;
}
public int getAge()
{
return age;
}
public void setAge(int age)
{
this.age = age;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
public String execute() throws Exception
{
// if(!"hello".equals(username))
// {
// throw new UsernameException("username invalid");
// }
// if(!"world".equals(password))
// {
// throw new PasswordException("password invalid!");
// }
// HttpServletRequest request = ServletActionContext.getRequest();
// HttpSession session = request.getSession();
// session.setAttribute("hello", "heloworld");
//
// ActionContext actionContext = ActionContext.getContext();
// Map<String,Object> map = actionContext.getSession();
// //使用Map是为了进行单元测试
// Object object = map.get("hello");
// System.out.println(object);
if(this.loginService.isLogin(username, password))
{
User user = new User();
user.setUsername(username);
user.setPassword(password);
ActionContext.getContext().getSession().put("userInfo", user);
return SUCCESS;
}
return INPUT;
}
public String myExecute()
{
System.out.println("myExecute invoke!");
return SUCCESS;
}
}
如果既有struts.xml又有注解，冲突时，以注解为准。