jackson 一个极其便利的web json转换工具

<!-- jackson -->
<dependency>
	<groupId>org.codehaus</groupId> 
	<artifactId>jackson</artifactId>
	<version>1.9.11</version>
</dependency>

 

/**
	 * jackson obj to Json
	 * 
	 * @param obj
	 * @return
	 */
	public String toJson(Object obj) {
		ObjectMapper objectMapper = new ObjectMapper();
		String jsonStr = null;
		try {
			jsonStr = objectMapper.writeValueAsString(obj);
		} catch (Throwable t) {
			log.error("to json cause error", t);
		}
		log.info(jsonStr);
		return jsonStr;
	}

	@SuppressWarnings({ "unchecked", "rawtypes" })
	public <T> T json2Obj(String jsonStr, Class c) throws Throwable {
		ObjectMapper objectMapper = new ObjectMapper();
		Object obj = objectMapper.readValue(jsonStr, c);
		return (T) obj;
	}

 

Java Action:

 if ("/hotel/selectClassNo.page".equals(url)) {
				HotelDetailResponse hotelDetail = hotelService.queryHotelDetail(bizDTO).getHotelDetailResponse();
				modelMap.put("hotelDetail2", toJson(hotelDetail));
			}

 

web html:

var json = $!hotelDetail2;
alert(json.hotelId);
console.log($!hotelDetail2);