SSM的整合及spring-config.xml文件的配置信息，时间日期转换器、Json对象注解配置

<?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: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/context  
    http://www.springframework.org/schema/context/spring-context-4.3.xsd
    http://www.springframework.org/schema/mvc  
    http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd
    http://www.springframework.org/schema/p ">
    <!-- 默认扫描包路径，扫描控制器 -->
    <context:component-scan base-package="com.macw.controller"></context:component-scan>
    <!-- 注解驱动 -->
    <mvc:annotation-driven conversion-service="conversionService"></mvc:annotation-driven>
    <!-- 转换器配置，时间日期格式化 -->
   <bean id="conversionService" class="org.springframework.format.support.FormattingConversionServiceFactoryBean">
      <property name="converters">
        <list>
          <bean class="com.macw.util.DateConverter"></bean>
        </list>
      </property>
     </bean>
   <!-- 开启注解,Json对象的注解配置 -->
    <mvc:annotation-driven>
        <!-- 使用fastjson将java对象转换为json对象 -->
        <mvc:message-converters>
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter4">
                <property name="supportedMediaTypes">
                    <list>
                        <value>application/json;charset=utf-8</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>
    <!-- 定义spring MVC的拦截器 -->
    <!-- <mvc:interceptors>
    <mvc:interceptor>
      拦截所有请求
      <mvc:mapping path="/*/*/lj.do"/>
      自定义判断用户权限的拦截类
      <bean class="com.util.AuthorizedInterceptor"></bean>
    </mvc:interceptor>
  </mvc:interceptors> -->
  <!-- 上传文件大小配置-->
   <!--
    开启文件上传springmvc功能
     springmvc底层会自动去找id为multipartResolver的bean，来作为文件上传的解析器。
     注意：这个bean的id是固定的，不能写错必须是“multipartResolver”
     -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="10240000"></property>
    </bean>
   <!-- 静态资源访问，排除掉一般资源文件(图片，css, js)，进入springmvc的控制器  -->
    <mvc:resources mapping="/js/**" location="/js/"/>
    <mvc:resources mapping="/css/**" location="/css/"/>
    <mvc:resources mapping="/img/**" location="/img/"/>
    <!-- 视图解析器 -->
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp"/>
        <property name="suffix" value=".jsp"/>
    </bean>
</beans>

package com.macw.util;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import org.springframework.core.convert.converter.Converter;
public class DateConverter implements Converter<String, Date> {
  public Date convert(String str) {
    String pattern = "yyyy-MM-dd";
    if (str.contains("年")){
      pattern = "yyyy年MM月dd日";
    }else if (str.contains("/")){
      pattern = "yyyy/MM/dd";
    }
    SimpleDateFormat sdf = new SimpleDateFormat("pattern");
    try {
      Date d = sdf.parse("str");
      return  d;
    } catch (ParseException e) {
      e.printStackTrace();
    }
    return null;
  }
}

package com.baizhi.interceptor;
import com.baizhi.entity.User;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
        public class CheckSessionUserInterceptor implements HandlerInterceptor {
            @Override
            public boolean preHandle(HttpServletRequest req, HttpServletResponse response, Object o) throws Exception {
                HttpSession session=req.getSession();
                User user=(User)session.getAttribute("user");
                //检查session里面没有登录标记
                if(user==null){
                    //重定向到登录页面
                    String path=req.getContextPath();
                    response.sendRedirect(path+"/login.jsp");
                    return false;
                }else{
                    return true;
                }
    }
    @Override
    public void postHandle(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, ModelAndView modelAndView) throws Exception {
    }
    @Override
    public void afterCompletion(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, Object o, Exception e) throws Exception {
    }
}