Spring MVC 返回實體Json

 

在application.xml  配置：

<bean id="mappingJacksonHttpMessageConverter"
		class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />
	
	<bean
		class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
		<property name="messageConverters">
			<list>
				<ref bean="mappingJacksonHttpMessageConverter" /><!-- json轉換器 -->
			</list>
		</property>
	</bean>

 

 

在Maven中添加兩個依賴：

<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-core-asl</artifactId>
			<version>1.6.0</version>
		</dependency>
		
		<dependency>
			<groupId>org.codehaus.jackson</groupId>
			<artifactId>jackson-mapper-asl</artifactId>
			<version>1.6.0</version>
		</dependency>

 

 

 

在Controlle

@RequestMapping(value = "/getSecondTypesJson")
	public @ResponseBody
	List<MsgType> getSecondTypesJson(@RequestParam("id") Long id) {
		return msgTypeService.getTypesByParentId(id);
	}

 r中：