SpringMVC + FastJson + httl配置。springmvc在@responsebody时返回已格式化的json串，方便测试api接口时查看返回数据；·prettyPrint=true·搞定

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:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
		http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
		http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">


    <!-- 自动扫描且只扫描@Controller -->
    <context:component-scan base-package="com.jd.couponservice.test.controller" use-default-filters="false">
        <context:include-filter type="annotation" expression="org.springframework.stereotype.Controller"/>
        <context:include-filter type="annotation"
                                expression="org.springframework.web.bind.annotation.ControllerAdvice"/>
    </context:component-scan>


    <mvc:annotation-driven content-negotiation-manager="contentNegotiationManager">
        <mvc:message-converters register-defaults="true">
            <!-- 将StringHttpMessageCOnverter的默认编码设为UTF-8 -->
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <constructor-arg value="UTF-8"/>
                <!-- 去掉response中的Accept-Charset -->
                <property name="writeAcceptCharset" value="false"/>
            </bean>

            <!-- 将Jackson2HttpMessageConverter的默认格式化输出设为true -->
            <!--<bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <property name="prettyPrint" value="false"/>
            </bean>-->


            <!-- 启用fastjson的json格式化输出、日期格式化输出 在使用FastJson 1.2.11+版本时注意以下区别! -->
            <!-- 详见 https://github.com/alibaba/fastjson/wiki/FastJsonHttpMessageConverter_CN -->
            <!-- spring mvc 4.2以上版本配置 -->
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="fastJsonConfig">
                    <bean class="com.alibaba.fastjson.support.config.FastJsonConfig">
                        <property name="serializerFeatures">
                            <array value-type="com.alibaba.fastjson.serializer.SerializerFeature">
                                <!--<value>PrettyFormat</value>-->
                                <value>WriteDateUseDateFormat</value>
                                <value>WriteMapNullValue</value>
                                <value>WriteNullStringAsEmpty</value>
                                <value>WriteNullNumberAsZero</value>
                                <value>WriteNullBooleanAsFalse</value>
                            </array>
                        </property>
                    </bean>
                </property>
            </bean>

        </mvc:message-converters>
    </mvc:annotation-driven>

    <!-- REST中根据URL后缀自动判定Content-Type及相应的View -->
    <bean id="contentNegotiationManager" class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
        <property name="mediaTypes">
            <value>
                json=application/json
                xml=application/xml
            </value>
        </property>
    </bean>


    <bean id="viewResolver" class="httl.web.springmvc.HttlViewResolver">
        <property name="contentType" value="text/html; charset=UTF-8"/>
        <property name="prefix" value="/WEB-INF/views/"/>
        <property name="suffix" value=".httl"/>
    </bean>


    <mvc:default-servlet-handler/>
    
	<!-- 静态文件客户端缓存：60 * 60 * 24 * 10 -->
	<mvc:resources location="/public/" mapping="/public/**" cache-period="864000"/>
	
	<!-- 定义无需Controller的url<->view直接映射 -->
	<mvc:view-controller path="/" view-name="index"/>
	<mvc:view-controller path="/web/mashup-client" view-name="/web/mashup-client"/>
	
	<!-- 将Controller抛出的异常转到特定View, 保持SiteMesh的装饰效果 -->
	<bean class="org.springframework.web.servlet.handler.SimpleMappingExceptionResolver">  
		<property name="exceptionMappings">  
			<props>
				<prop key="org.apache.shiro.authz.UnauthorizedException">error/403</prop>
				<prop key="java.lang.Throwable">error/500</prop>
	    		</props>  
		</property>  
	</bean> 

</beans>