java：Springmvc框架2（Ajax，Interceptor，）
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1.springmvcAjax：
springmvc.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:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd"> <!-- 注解扫描!!!--> <context:component-scan base-package="cn.zzsxt"></context:component-scan> <!-- 配置视图解析器 --> <!-- InternalResourceViewResolver：支持JSP视图解析 --> <!-- viewClass：JstlView表示JSP模板页面需要使用JSTL标签库，所以classpath中必须包含jstl的相关jar包； --> <!-- prefix 和suffix：查找视图页面的前缀和后缀，最终视图的址为： --> <!-- 前缀+逻辑视图名+后缀，逻辑视图名需要在controller中返回ModelAndView指定，比如逻辑视图名为hello，--> <!-- 则最终返回的jsp视图地址 "WEB-INF/view/hello.jsp" --> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"></property> <property name="prefix" value="/WEB-INF/jsp/"></property> <property name="suffix" value=".jsp"></property> </bean> <!-- 注解映射器 说明 ：对类中标记@ResquestMapping的方法进行映射，根据ResquestMapping定义的url匹配 ResquestMapping标记的方法，匹配成功返回HandlerMethod对象给前端控制器，HandlerMethod对象中封装url对应的方法Method --> <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/> --> <!-- 注解适配器 说明：注解式处理器适配器，对标记@ResquestMapping的方法进行适配。 --> <!-- <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/> --> <!-- springmvc使用<mvc:annotation-driven> --> <!-- 自动加载RequestMappingHandlerMapping和RequestMappingHandlerAdapter， --> <!-- 可用在springmvc.xml配置文件中使用<mvc:annotation-driven>替代注解处理器和适配器的配置。 --> <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven> <!-- 自定义类型转换器 --> <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean"> <property name="converters"> <list> <bean class="cn.zzsxt.converter.CustomDateConverter"></bean> </list> </property> </bean> <!-- 处理静态资源 让静态资源可以直接访问--> <!--<mvc:resources mapping="/js/**" location="/js/"/> --> <!-- 当在web.xml 中 DispatcherServlet使用 <url-pattern>/</url-pattern> 映射时，能映射静态资源 --> <mvc:default-servlet-handler/> </beans>
web.xml:
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>springmvc01</display-name> <welcome-file-list> <welcome-file>index.html</welcome-file> <welcome-file>index.htm</welcome-file> <welcome-file>index.jsp</welcome-file> <welcome-file>default.html</welcome-file> <welcome-file>default.htm</welcome-file> <welcome-file>default.jsp</welcome-file> </welcome-file-list> <!-- 解决post提交乱码问题 --> <filter> <filter-name>encodingFilter</filter-name> <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class> <init-param> <param-name>encoding</param-name> <param-value>UTF-8</param-value> </init-param> </filter> <filter-mapping> <filter-name>encodingFilter</filter-name> <url-pattern>/*</url-pattern> </filter-mapping> <!-- spring mvc的前端控制器,类似struts2的核心过滤器 --> <servlet> <servlet-name>springmvc</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <!-- 通过contextConfigLocation参数指定配置文件的位置，默认在WEB-INF/查找名称为 [servlet-name]-servlet.xml --> <init-param> <param-name>contextConfigLocation</param-name> <param-value>classpath:springmvc.xml</param-value> </init-param> <!-- servlet随web容器而启动 --> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>springmvc</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
UserController.java:
package cn.zzsxt.controller; import java.util.HashMap; import java.util.Map; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestBody; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.ResponseBody; import cn.zzsxt.model.Userinfo; import cn.zzsxt.service.UserService; import cn.zzsxt.service.impl.UserServiceImpl; import cn.zzsxt.vo.ResultMessage; @Controller @RequestMapping("/user") public class UserController { private UserService userService = new UserServiceImpl(); @RequestMapping(value="login",method=RequestMethod.GET) public String login(){ return "login"; } @RequestMapping(value="register",method=RequestMethod.GET) public String register(){ return "register"; } /** * @ResponseBody:将java对象转换为json对象 * @RequestBody:将json对象转换为java对象 * @param userName * @return */ @RequestMapping(value="check",method=RequestMethod.GET) @ResponseBody public Map<String,Object> check(@RequestBody String userName){ boolean isExist = userService.checkUserName(userName); Map<String,Object> map = new HashMap<String,Object>(); map.put("isExist", isExist); return map; } @RequestMapping(value="register",method=RequestMethod.POST) @ResponseBody public ResultMessage register(@RequestBody Userinfo user){ //此处@RequestBody出错的话不加？ boolean success = userService.add(user); String message=success?"添加成功!":"添加失败!"; ResultMessage rm = new ResultMessage(); rm.setSuccess(success); rm.setMessage(message); return rm; } }
CustomDateConverter.java:
package cn.zzsxt.converter; import java.text.ParseException; import java.text.SimpleDateFormat; import java.util.Date; import org.springframework.core.convert.converter.Converter; /** * 自定义类型转换器 * @author Think * */ public class CustomDateConverter implements Converter<String, Date> { @Override public Date convert(String source) { SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd"); try { Date date = sdf.parse(source); return date; } catch (ParseException e) { e.printStackTrace(); } return null; } }
ResultMessage.java:
package cn.zzsxt.vo; public class ResultMessage { private boolean success;//是否新增成功 private String message;//操作完成后的提升消息 public boolean isSuccess() { return success; } public void setSuccess(boolean success) { this.success = success; } public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } }
login.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 \'login.jsp\' starting page</title> <script type="text/javascript" src="js/jquery-3.2.1.min.js"></script> <script type="text/javascript"> $(function(){ $("#userName").blur(function(){ var userName = $("#userName").val(); $.get("user/check?userName="+userName,function(data){ if(data.isExist==true){ $("#msg").html("<font color=red>用户名已存在!</font>"); $("#submitBtn").attr("disabled",true); }else{ $("#msg").html("<font color=green>用户名可用!</font>"); $("#submitBtn").attr("disabled",false); } }); }); }) </script> </head> <body> <form action="" method="post"> 用户名:<input type="text" name="userName" id="userName"/><span id="msg"></span> <br> 密码:<input type="text" name="userPass"/><br> <input type="submit" value="登录" id="submitBtn"> </form> </body> </html>
register.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 \'login.jsp\' starting page</title> <script type="text/javascript" src="js/jquery-3.2.1.min.js"></script> <script type="text/javascript"> $(function(){ //单机注册按钮 $("#submitBtn").click(function(){ //获取表单元素的值 var userName = $("#userName").val(); var userPass = $("#userPass").val(); var address = $("#address").val(); var birthday = $("#birthday").val(); var jsonData = \'{"userName":"\'+userName+\'","userPass":"\'+userPass+\'","address":"\'+address+\'","birthday":"\'+birthday+\'"}\'; // alert(jsonData); $.ajax({ type:"POST", url:"user/register", contentType:"application/json", data:jsonData, success: function(msg){ // alert( "Data Saved: " + msg ); alert(msg.message); } }); }); }) </script> </head> <body> <form action="" method="post"> 用户名:<input typejava框架--springmvc --ajax-json-upload+maven