实现标题这个议题,首先我们需要加入2个包,
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.5.6</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.5.6</version>
</dependency>
其次保证spring支持annotation,这里就不写配置了。
看controller:
@RequestMapping(value="/content-type/{prodId}")
@ResponseBody
public Map<String,List<ContentType>> listContentTypeByProdJSONFormat(HttpServletRequest request,@PathVariable("prodId") int prodId)
{
List<ContentType> contentTypeList = contentTypeService.listContentTypeByProduct(prodId);
Map<String,List<ContentType>> contentTypes = new HashMap<String,List<ContentType>>();
contentTypes.put("contentTypes", contentTypeList);
return contentTypes;
}
@ResponseBody注解就是要求这个controller以text文本形式返回,这里绑定一个Map类型,实际返回的就是个json对象,格式就是map转json的格式。这样在ajax调用的时候回调函数可以这样拿:
success:function(data)
{
var typeList = data.contentTypes;
var length = typeList.length;
....
....
....
});
这的contentTypes必须和后台controller绑定的Map的key保证一致,这个不用解释了吧。