java：struts框架3（自定义拦截器，token令牌，文件上传和下载（单/多））
1.自定义拦截器：
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="inteceptor" extends="struts-default"> <interceptors>
<!-- 配置自定义拦截器 -->
<interceptor name="myInter" class="cn.zzsxt.interceptor.MyInterceptor"></interceptor>
<interceptor name="permission" class="cn.zzsxt.interceptor.PermissionInterceptor"></interceptor> <!-- 自定义拦截器栈 -->
<interceptor-stack name="myStack">
<!-- 引入自定义拦截器 -->
<interceptor-ref name="myInter"></interceptor-ref>
<!-- 引入timer拦截器 -->
<interceptor-ref name="timer"></interceptor-ref>
<!-- 引入默认拦截器栈 -->
<interceptor-ref name="defaultStack"></interceptor-ref>
</interceptor-stack> <!-- 自定义访问权限的拦截器栈 -->
<interceptor-stack name="permissionStack">
<interceptor-ref name="permission"></interceptor-ref>
<interceptor-ref name="defaultStack"></interceptor-ref>
</interceptor-stack>
</interceptors> <action name="timerAction" class="cn.zzsxt.action.TimerAction">
<result name="success">/success.jsp</result>
<interceptor-ref name="myStack"></interceptor-ref>
<interceptor-ref name="permissionStack"></interceptor-ref>
</action>
<action name="userAction" class="cn.zzsxt.action.UserAction">
<result name="success" type="redirectAction">homeAction</result>
<result name="login">/login.jsp</result>
<interceptor-ref name="permissionStack"></interceptor-ref>
</action>
<action name="homeAction" class="cn.zzsxt.action.HomeAction">
<result name="success">/list.jsp</result>
<result name="login" type="redirect">/login.jsp</result>
<!-- 引入拦截器栈 -->
<interceptor-ref name="permissionStack"></interceptor-ref>
</action>
</package>
</struts>
2.token令牌:
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> <!-- 上传文件最大大小,默认为2097152字节(2M) -->
<constant name="struts.multipart.maxSize" value="209715200"></constant> <!-- 设置编码集 request.setCharacterEncoding("UTF-8")-->
<constant name="struts.i18n.encoding" value="UTF-8"></constant> <package name="tokenDemo" extends="struts-default">
<action name="user-*" class="cn.zzsxt.action.UserAction" method="{1}">
<result name="success">/index.jsp</result>
<!-- token验证失败后跳转的结果视图 -->
<result name="invalid.token">/error.jsp</result>
<!-- 引入token拦截器 -->
<interceptor-ref name="token"></interceptor-ref>
<!-- 引入默认拦截器栈 -->
<interceptor-ref name="defaultStack"></interceptor-ref>
</action>
</package>
</struts>
add.jsp:
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="/struts-tags" prefix="s"%>
<%
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>
</head> <body>
<form action="user-doAdd.action" method="post">
<!-- token令牌 -->
<s:token></s:token>
用户编号:<input type="text" name="user.id"><br>
用户名称:<input type="text" name="user.userName"><br>
密码:<input type="text" name="user.password"><br>
<input type="submit" value="新增"/>
</form>
</body>
</html>
action:
package cn.zzsxt.action;
import com.opensymphony.xwork2.ActionSupport;
import cn.zzsxt.entity.User;
public class UserAction extends ActionSupport{
private User user;
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public String doAdd() throws Exception {
System.out.println("执行了用户新增,新增了:"+user);
return this.SUCCESS;
}
}
3.文件上传和下载（单/多）：
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> <!-- 上传文件最大大小,默认为2097152字节(2M) -->
<constant name="struts.multipart.maxSize" value="209715200"></constant>
<!-- 设置编码集 request.setCharacterEncoding("UTF-8")-->
<constant name="struts.i18n.encoding" value="UTF-8"></constant> <package name="upload" extends="struts-default">
<action name="singleUpload" class="cn.zzsxt.action.SingleUploadAction">
<!-- result中name属性缺省(默认)为success -->
<result>/success.jsp</result>
</action>
<action name="mutilUpload" class="cn.zzsxt.action.MutilUploadAction">
<!-- result中name属性缺省(默认)为success -->
<result>/success.jsp</result>
</action> <action name="download" class="cn.zzsxt.action.DownloadAction">
<result type="stream">
<!-- inputName="输入流的名称"，回掉action中getInputStream()方法获取输入流 -->
<param name="inputName">inputStream</param>
<!--contentType="文件类型" application/octet-stream代表对下载类型不限制 -->
<param name="contentType">application/octet-stream</param>
<!-- attachment:以附件方式保存 filename="保存的文件名称" ${fileName}获取action中fileName属性的值 -->
<param name="contentDisposition">attachment;filename=${fileName}</param>
</result>
</action>
</package>
</struts>
SingleUploadAction:
package cn.zzsxt.action; import java.io.File; import javax.servlet.ServletContext; import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class SingleUploadAction extends ActionSupport{
private File upload;//文件
private String uploadFileName;//文件名称:属性名+FileName
private String uploadContentType;//文件类型:属性名+ContentType public File getUpload() {
return upload;
} public void setUpload(File upload) {
this.upload = upload;
} public String getUploadFileName() {
return uploadFileName;
} public void setUploadFileName(String uploadFileName) {
this.uploadFileName = uploadFileName;
} public String getUploadContentType() {
return uploadContentType;
} public void setUploadContentType(String uploadContentType) {
this.uploadContentType = uploadContentType;
} /**
* 执行文件上次
*/
@Override
public String execute() throws Exception {
System.out.println("文件名称:"+uploadFileName);
System.out.println("文件类型:"+uploadContentType);
ServletContext servletContext = ServletActionContext.getServletContext();
String realPath = servletContext.getRealPath("/upload");//获取文件上次的真实目录
File uploadDir = new File(realPath);
if(!uploadDir.exists()){
uploadDir.mkdirs();//创建目录
}
//上传
FileUtils.copyFile(upload, new File(uploadDir,uploadFileName));
return this.SUCCESS;
}
}
SingleUpload.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>单文件上传</title>
</head> <body>
<form action="singleUpload.action" method="post" enctype="multipart/form-data">
文件:<input type="file" name="upload"></br>
<input type="submit" value="上传"/>
</form>
</body>
</html>
MutilUploadAction:
package cn.zzsxt.action; import java.io.File; import javax.servlet.ServletContext; import org.apache.commons.io.FileUtils;
import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class MutilUploadAction extends ActionSupport{
private File[] upload;//文件
private String[] uploadFileName;//文件名称:属性名+FileName
private String[] uploadContentType;//文件类型:属性名+ContentType
public File[] getUpload() {
return upload;
}
public void setUpload(File[] upload) {
this.upload = upload;
}
public String[] getUploadFileName() {
return uploadFileName;
}
public void setUploadFileName(String[] uploadFileName) {
this.uploadFileName = uploadFileName;
}
public String[] getUploadContentType() {
return uploadContentType;
}
public void setUploadContentType(String[] uploadContentType) {
this.uploadContentType = uploadContentType;
} /**
* 执行文件上次
*/
@Override
public String execute() throws Exception {
System.out.println("文件名称:"+uploadFileName);
System.out.println("文件类型:"+uploadContentType);
ServletContext servletContext = ServletActionContext.getServletContext();
String realPath = servletContext.getRealPath("/upload");//获取文件上次的真实目录
File uploadDir = new File(realPath);
if(!uploadDir.exists()){
uploadDir.mkdirs();//创建目录
}
//遍历待上传的文件
for(int i=0;i<upload.length;i++){
//上传
FileUtils.copyFile(upload[i], new File(uploadDir,uploadFileName[i]));
}
return this.SUCCESS;
}
}
MutilUpload.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>单文件上传</title>
</head> <body>
<form action="mutilUpload.action" method="post" enctype="multipart/form-data">
文件1:<input type="file" name="upload"></br>
文件2:<input type="file" name="upload"></br>
文件3:<input type="file" name="upload"></br>
<input type="submit" value="上传"/>
</form>
</body>
</html>
DownloadAction:
package cn.zzsxt.action; import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream; import javax.servlet.ServletContext; import org.apache.struts2.ServletActionContext; import com.opensymphony.xwork2.ActionSupport; public class DownloadAction extends ActionSupport{
private String fileName;//接受要下载的文件名称
private InputStream inputStream; public String getFileName() {
return fileName;
} public void setFileName(String fileName) {
this.fileName = fileName;
} public InputStream getInputStream() {
return inputStream;
} public void setInputStream(InputStream inputStream) {
this.inputStream = inputStream;
} /**
* 文件下载
*/
@Override
public String execute() throws Exception {
//获取服务器端保存文件的目录
ServletContext servletContext = ServletActionContext.getServletContext();
String realPath = servletContext.getRealPath("/upload");//获取文件上传的真实目录
File file = new File(realPath,fileName);
inputStream = new FileInputStream(file); //将文件转为输入流
//解决下载时中文名称乱码问题
String str = new String(fileName.getBytes("UTF-8"),"iso-8859-1");
fileName = str;
return this.SUCCESS;
}
}
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>文件下载</title>
</head> <body>
<a href="download.action?fileName=1.txt">1.txt</a><br>
<a href="download.action?fileName=mystruts.png">mystruts.png</a><br>
<a href="download.action?fileName=Log4J详解.docx">Log4J详解.docx</a><br>
</body>
</html>
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