基于SSM的二手交易平台

系统采用SSM框架，前端使用bootstrap、css、js等，是一个二手平台。主要功能包括：商品查看及搜索、发布商品、购买、留言与回复、收藏等，以及管理员管理相关功能。

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• 首页如下

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• 详情部分

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• 当然也可以评论和回复评论

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• 选择商品后可以下单

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• 后台一些功能：

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系统是基于SSM框架，springmvc配置如下：

<?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: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/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
        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/util http://www.springframework.org/schema/util/spring-util.xsd">

    <!-- DispatcherServlet Context: defines this servlet's request-processing infrastructure -->
    <context:component-scan base-package="com.wzh.secondshop" />

    <mvc:annotation-driven />

    <!--静态资源映射-->
    <mvc:resources mapping="/statics/**" location="/statics/"/>

    <!-- 配置SpringMVC的视图解析器 -->
    <!-- 其viewClass属性的默认值就是org.springframework.web.servlet.view.JstlView -->
    <bean class="com.wzh.secondshop.exception.ExceptionHandler"></bean>
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".jsp"/>
    </bean>

    <bean name="jacksonObjectMapper"
          class="org.springframework.http.converter.json.Jackson2ObjectMapperFactoryBean">
        <property name="featuresToDisable">
            <array>
                <util:constant static-field="com.fasterxml.jackson.databind.SerializationFeature.WRITE_DATES_AS_TIMESTAMPS" />
            </array>
        </property>
    </bean>

    <!-- 上传文件 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="defaultEncoding" value="utf-8"/>
        <!-- 最大内存大小 -->
        <property name="maxInMemorySize" value="10240"/>
        <!-- 最大文件大小，-1为不限制大小 -->
        <property name="maxUploadSize" value="-1"/>
    </bean>

    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean
                    class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <property name="objectMapper" ref="jacksonObjectMapper" />
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>
</beans>

后端接受请求：

@RequestMapping(value = "/", method = RequestMethod.GET)
	public String getHomeGoods(
			ModelMap model,
			@RequestParam(required = false, defaultValue = "") String searchText,
			@RequestParam(required = false) Integer secondTypeId,
			@RequestParam(required = false, defaultValue = "0") int offset,
			@RequestParam(required = false, defaultValue = "40") int limit) {
    
    
		List<Good> goods = goodService.getGoodsBySearchAndType(searchText,
				secondTypeId, offset, limit);
		double goodsNum = goodService.getGoodsBySearchAndTypeCount(searchText,
				secondTypeId);
		List<FirstType> firstTypes = typeService.getAllFirstType();
		for (FirstType firstType : firstTypes) {
    
    
			firstType.setSecondType(typeService
					.getSecondTypeByFirstTypeId(firstType.getId()));
		}
		model.addAttribute("firstTypes", firstTypes);
		model.addAttribute("goods", goods);
		model.addAttribute("pages", Math.ceil(goodsNum / limit));
		model.addAttribute("goodsNum", goodsNum);
		model.addAttribute("offset", offset);
		model.addAttribute("limit", limit);
		return "home/homeGoods";
	}

获取数据使用mybatis注解形式：

@Select("Select * from good_table WHERE second_type_id = #{0} and status_id = 1 ORDER BY upload_date DESC;")
	List<Good> getGoodsByTypeId(Integer secondTypeId);

好了，上面就是系统的实现，如果大家有什么问题，可以私信交流学习。