spring mvc配置檔案當中新增如下內容，實現responsebody返回String的編碼設定，

並且使用fastjson作為json解析器，自動解析java物件作為返回：

<!-- 預設的註解對映的支援，org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping -->
	<mvc:annotation-driven
		content-negotiation-manager="contentNegotiationManager">
		<mvc:message-converters register-defaults="true">
			<!-- @ResponseBody亂碼問題，將StringHttpMessageConverter的預設編碼設為UTF-8 -->
			<bean class="org.springframework.http.converter.StringHttpMessageConverter">
				<constructor-arg value="UTF-8" />
			</bean>
			<!-- 配置Fastjson支援 -->
			<bean
				class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
				<property name="charset" value="UTF-8" />
				<property name="supportedMediaTypes">
					<list>
						<value>application/json;charset=UTF-8</value>
						<value>text/html;charset=UTF-8</value>
					</list>
				</property>
				<property name="features">
					<list>
						<value>WriteMapNullValue</value>
						<value>QuoteFieldNames</value>
						<value>WriteDateUseDateFormat</value>
						<value>WriteEnumUsingToString</value>
					</list>
				</property>
			</bean>
		</mvc:message-converters>
	</mvc:annotation-driven>

	<!-- REST中根據URL字尾自動判定Content-Type及相應的View -->
	<bean id="contentNegotiationManager"
		class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean">
		<property name="mediaTypes">
			<map>
				<entry key="xml" value="application/xml" />
				<entry key="json" value="application/json" />
			</map>
		</property>
		<property name="ignoreAcceptHeader" value="true" />
		<property name="favorPathExtension" value="true" />
	</bean>