SpringMVC案例3----spring3.0项目拦截器、ajax、文件上传应用
依然是项目结构图和所需jar包图：
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显示配置文件hib-config.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
">
<context:component-scan base-package="com.sxt"></context:component-scan>
<!-- 支持aop注解 -->
<aop:aspectj-autoproxy></aop:aspectj-autoproxy> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/crud"></property>
<property name="username" value="root"></property>
<property name="password" value="root"></property>
</bean> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource">
<ref bean="dataSource"></ref>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.show_sql">
true
</prop>
<prop key="hibernate.hbm2ddl.auto">update</prop>
</props>
</property>
<property name="packagesToScan">
<value>com.sxt.po</value>
</property>
</bean> <bean id="hibernateTemplate" class="org.springframework.orm.hibernate3.HibernateTemplate">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean> <!-- 配置一个JdbcTemplate实例 -->
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="dataSource"></property>
</bean> <!-- 配置事务管理 -->
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"></property>
</bean> <tx:annotation-driven transaction-manager="txManager"/>
<aop:config>
<aop:pointcut expression="execution(public * com.sxt.service.impl.*.*(..))" id="businessService"/>
<aop:advisor advice-ref="txAdvice" pointcut-ref="businessService"/>
</aop:config>
<tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="find*" read-only="true" propagation="NOT_SUPPORTED"/>
<!-- get开头的方法不须要在事务中执行。有些情况是没有必要使用事务的。比方获取数据。开启事务本身对性能本身是有一定的影响的 -->
<tx:method name="*"/>
</tx:attributes>
</tx:advice>
</beans>
再是springmvc-servlet.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-3.0.xsd">
<!-- 対web包中的全部的类进行扫描，以完毕bean的创建和自己主动依赖输入功能 -->
<context:component-scan base-package="com.sxt"></context:component-scan>
<!-- 启动springmvc的注解功能，完毕请求和注解POJO的映射 -->
<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
<property name="cacheSeconds" value="0"></property>
<property name="messageConverters">
<list>
<bean class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
</bean>
</list>
</property>
</bean>
<!-- 对模型视图名称的解析，即在模型视图名称加入前后缀 -->
<bean class="org.springframework.web.servlet.view.InternalResourceViewResolver" >
<property name="suffix" value=".jsp"></property>
<property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
</bean>
<!-- 处理文件上传 -->
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- 默认编码 -->
<property name="defaultEncoding" value="utf-8"></property>
<property name="maxInMemorySize" value="10240"/><!-- 最大内存大小 -->
<!-- 上传后的文件夹名 -->
<property name="uploadTempDir" value="/upload/"></property>
<!-- 最大文件大小，-1为无限制 -->
<property name="maxUploadSize" value="-1"></property> </bean>
<mvc:interceptors>
<!-- 拦截全部springmvc的url -->
<bean class="com.sxt.interceptor.MyInterceptor"></bean>
<mvc:interceptor>
<mvc:mapping path="/user.do"/>
<bean class="com.sxt.interceptor.MyInterceptor2"></bean>
</mvc:interceptor>
</mvc:interceptors>
</beans>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>springmvc</servlet-name>
<servlet-class>
org.springframework.web.servlet.DispatcherServlet
</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/hib-config.xml,/WEB-INF/springmvc-servlet.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>springmvc</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
</web-app>
dao层的userDao
package com.sxt.dao; import javax.annotation.Resource; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Repository; import com.sxt.po.User;
@Repository("userDao")
public class UserDao {
@Autowired
private HibernateTemplate hibernateTemplate ; public void add(User u){
System.out.println("userDao.add()");
hibernateTemplate.save(u) ;
} }
模型层的user类
package com.sxt.po; import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id; @Entity
public class User {
private int id ;
private String name ;
private String pwd ;
public User(){}
public User(String name,String pwd){
this.name = name ;
this.pwd = pwd ;
}
@Id
@GeneratedValue(strategy=GenerationType.AUTO)
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getPwd() {
return pwd;
}
public void setPwd(String pwd) {
this.pwd = pwd;
} }
service层的userService类
package com.sxt.service; import javax.annotation.Resource; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service; import com.sxt.dao.UserDao;
import com.sxt.po.User;
@Service("userService")
public class UserService {
@Autowired
private UserDao userDao ;
public void add(String name){
System.out.println("UserService.add()");
User u = new User() ;
u.setName(name) ;
userDao.add(u) ;
} }
controller层的userController类
package com.sxt.action; import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest; import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.SessionAttributes; import com.sxt.service.UserService;
@org.springframework.stereotype.Controller("userController")
@RequestMapping("/user.do")
@SessionAttributes({"uname"})
public class UserController{
@Autowired
private UserService userService ;
@RequestMapping(params="method=reg")
public String reg(String uname){
System.out.println("UserController.reg()");
userService.add(uname) ;
return "index" ;
}
@RequestMapping(params="method=reg2")
public String reg2(@RequestParam("uname")String name,ModelMap map){
System.out.println("UserController.reg2()");
userService.add(name) ;
map.put("b", "bbb") ;
return "index" ;
}
@RequestMapping(params="method=reg3")
public String reg3(String uname,ModelMap map){
System.out.println("UserController.reg3()");
userService.add(uname) ;
System.out.println(uname);
map.put("uname", uname) ;
return "index" ;
}
@RequestMapping(params="method=reg4")
public String reg4(String uname,ModelMap map){
System.out.println("UserController.reg4()");
// return "forward:user.do? method=reg3" ; //转发，不写默认就是转发
return "redirect:http://www.baidu.com" ;//重定向
}
@RequestMapping(params="method=reg5")
public String reg5(String uname){
System.out.println("UserController.reg4()");
return "redirect:http://www.baidu.com" ;//重定向
} }
MyAjaxController类
package com.sxt.action; import java.io.UnsupportedEncodingException;
import java.util.ArrayList;
import java.util.List; import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody; import com.sxt.po.User;
@Controller
@RequestMapping("myajax.do")
public class MyAjaxController {
@RequestMapping(params="method=test2",method=RequestMethod.GET)
public @ResponseBody List<User> test1(String uname) throws Exception{
String uname2 = new String(uname.getBytes("iso8859-1"),"utf-8") ;
System.out.println(uname2);
System.out.println("MyAjaxController.test1()");
List<User> list = new ArrayList<User>() ;
list.add(new User("吴海旭","123")) ;
list.add(new User("韩敬琼","456")) ;
System.out.println(list.size());
return list ;
}
}
FileUoLoadController类
package com.sxt.action; import java.io.File;
import java.util.Date; import javax.servlet.ServletContext; import org.apache.log4j.chainsaw.Main;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.context.ServletContextAware;
import org.springframework.web.multipart.commons.CommonsMultipartFile;
@Controller("fileUpLoadController")
public class FileUpLoadController implements ServletContextAware{
private ServletContext servletContext ;
@Override
public void setServletContext(ServletContext servletContext) {
// TODO Auto-generated method stub
this.servletContext = servletContext ;
}
@RequestMapping(value="/upload.do",method=RequestMethod.POST)
public String handleUploadData(String name,@RequestParam("file")CommonsMultipartFile file){
if(!file.isEmpty()){
//获取本地存储路径，必须在项目下建立一个这种路径
String path = this.servletContext.getRealPath("/upload/") ;
System.out.println(path);
//获取文件名
String fileName = file.getOriginalFilename() ;
//获取文件后缀名
String fileType = fileName.substring(fileName.lastIndexOf(".")) ;
System.out.println(fileType);
File file2 = new File(path,new Date().getTime()+fileType) ;
try {
file.getFileItem().write(file2) ;
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return "redirect:upload_ok.jsp" ;
}else{
return "redirect:upload_error.jsp" ;
}
}
}
拦截器层的MyInterceptor类
package com.sxt.interceptor; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView; public class MyInterceptor implements HandlerInterceptor{ @Override
public void afterCompletion(HttpServletRequest arg0,
HttpServletResponse arg1, Object arg2, Exception arg3)
throws Exception {
// TODO Auto-generated method stub
System.out.println("最后运行，一般用于释放资源！！！");
} @Override
public void postHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2, ModelAndView arg3) throws Exception {
// TODO Auto-generated method stub
System.out.println("action运行之后，生成视图之前！。");
} @Override
public boolean preHandle(HttpServletRequest arg0, HttpServletResponse arg1,
Object arg2) throws Exception {
// TODO Auto-generated method stub
System.out.println("action之前运行");
return true;
} }
MyInterceptor2类
package com.sxt.interceptor; import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.handler.HandlerInterceptorAdapter; public class MyInterceptor2 extends HandlerInterceptorAdapter{
@Override
public boolean preHandle(HttpServletRequest request,
HttpServletResponse response, Object handler) throws Exception {
// TODO Auto-generated method stub
System.out.println("MyInterceptor2.preHandle()");
return true;
}
}
用于測试ajax的a.jsp文件
<%@ 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 'a.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">
-->
<script>
function createAjaxObj(){
var req ;
if(window.XMLHttpRequest){
req = new XMLHttpRequest() ;
}else{
req = new ActiveXObject("Msxml2.XMLHTTP") ;
}
return req ;
}
function sendAjaxReq(){
var req = createAjaxObj() ;
req.open("get","myajax.do?method=test2&uname=张三") ;
req.setRequestHeader("accept","application/json") ;
req.onreadystatechange = function(){
var msg = req.responseText ;
eval("var result=" + msg) ;
document.getElementById("div1").innerHTML = result[0].name ;
}
req.send(null) ;
}
</script>
</head> <body>
<a href="javascript:void(0);" onclick="sendAjaxReq();">測试</a>
<div id="div1"></div>
</body>
</html>
index.jsp
<%@ page language="java" import="java.util.*" pageEncoding="GB18030"%>
<%
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>
${requestScope.uname} <br />
${sessionScope.uname} <br />
</body>
</html>
index2.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 'index2.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="user.do">
姓名：<input type="text" name="uname"/><br />
<input type="hidden" name="method" value="reg3">
<input type="submit" value="注冊 " />
</form>
</body>
</html>
upload_error.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 'upload_error.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>
<h1>上传失败！</h1>
</body>
</html>
upload_ok.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 'upload_ok.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>
<h1>上传成功！ </h1>
</body>
</html>
upload.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>測试springmvc中的上传的实现</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="upload.do" method="post" enctype="multipart/form-data">
<input type="text" name="name" />
<input type="file" name="file" />
<input type="submit" />
</form>
</body>
</html>
至此整个springmvc重要的东西測试完成！
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