SpringMVC 返回JSON数据的配置

　　spring-mvc-config.xml（文件名称请视具体情况而定）配置文件：

<!-- 启动Springmvc注解驱动 -->
	<mvc:annotation-driven>
 <!-- 返回json 方法一 需要导入 fastjson.jar包 -->
	<mvc:annotation-driven>
        <mvc:message-converters register-defaults="false">
            <!-- 避免IE执行AJAX时,返回JSON出现下载文件 -->
            <bean id="fastJsonHttpMessageConverter" class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list>
                        <!-- 这里顺序不能反，一定先写text/html,不然ie下出现下载提示 -->
                        <value>text/html;charset=UTF-8</value>
                        <value>application/json;charset=UTF-8</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

  <!-- 返回json 方法二 需要导入 jackson-annotations.jar,jackson-core.jar,jackson-databind.jar-->
   <!--  <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping" />
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
        <property name="messageConverters">
            <list>
                <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html; charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
                <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                    <property name="supportedMediaTypes">
                        <list>
                            <value>text/html; charset=UTF-8</value>
                            <value>application/json;charset=UTF-8</value>
                        </list>
                    </property>
                </bean>
            </list>
        </property>
    </bean> -->

<!-- 下面配置与返回json 无关  -->

    <!-- 自动将控制器加载到bean -->
    <context:component-scan base-package="org.controller"></context:component-scan>
    <!-- 配置处理静态资源的请求 -->
    <mvc:resources location="/resources/" mapping="*/res/**"/>

    <!-- 拦截器配置 -->
    <mvc:interceptors>
        <bean class="org.aop.LoginInteceptor" />
    </mvc:interceptors>

    <!-- 配置视图解析器 -->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/><!--可为空,方便实现自已的依据扩展名来选择视图解释类的逻辑  -->
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
    </bean>   

     <!-- 上传 需要使用到的配置-->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize" value="1046666000"/>
    </bean>

     <!--配置全局的异常-->
    <!-- <bean id="exceptionResolver" class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">
        <property name="exceptionMappings">
            <props>
                <prop key="com.guanlan.util.SportException">error</prop>
            </props>
        </property>
    </bean> -->