有关用AJAX发送JSON数据到后台的问题总结

1.数据有对象，有list
数据1：

var xml_data = [{
        "name": "scene_img_3773_panorama",
        "sceneAttr": {
            "view": {
                "hlookat": "1.008",
                "vlookat": "-4.579"
            },
            "hotspots": [{
                    "ath": "-4.124",
                    "atv": "4.146",
                    "linkedscene": "scene_img_7994_panorama",
                    "name": "spot1"
                },
                {
                    "ath": "-4.124",
                    "atv": "8.146",
                    "name": "spot2"
                }
            ]
        }
    },
    {
        "name": "scene_img_7994_panorama",
        "secenAttr": {
            "view": {
                "hlookat": "-3.296",
                "vlookat": "2.283"
            },
            "hotspots": [{
                    "ath": "-19.613",
                    "atv": "11.459",
                    "linkedscene": "scene_img_7984_panorama",
                    "name": "spot1"
                },
                {
                    "ath": "-75.014",
                    "atv": "8.862",
                    "linkedscene": "scene_img_3773_panorama",
                    "name": "spot2"
                }
            ]
        }
    }
]

数据2：

var json={ "addr_num":"runoob", "user_guid":10000};

2.ajax调用

$.ajax({
    type: ”POST”,
    url: ” /panorama/saveScene”,
    processData: false,
    contentType: “application / json;charset = utf - 8”, //这个是发送信息至服务器时内容编码类型  
    dataType: “json”,
    data: JSON.stringify(xml_data), //这里必须将对象转成string类型，否则将掉入无线的大坑中。。。  
    success: function(msg) {
        alert(msg);
    }
})；

3.后台采用的是spring mvc来接收的，后台接收的方式也分为了两种，一种是用@RequestBody来处理的，一种是用common io的工具类IOUtils来读取二进制流将其解析成一个字符串，之后再用fastjson来将一个Json字符串转成java对象

@Controller  
@RequestMapping(“/panorama”)  
public class PanoController extends BaseController {  
  /**
   * 用@RequestBody的方式来将json反序列化成list<Scene>对象
   * @param scene
   * @return
   */  
  @RequestMapping(value = “saveScene”,method = RequestMethod.POST)  
  @ResponseBody  
  public List<Scene> saveScene(@RequestBody List<Scene> scene,或者是对象，@RequestBody Address user){  
      System.out.println(“JSONTOJAVAOBJ===================”+scene.size());  
      return scene;  
  }  
  //io流读取二进制json对象  
  public List<Scene> saveScene(HttpServletRequest request) throws IOException{  
      String jsonStr = IOUtils.toString(request.getInputStream(),”UTF-8″);  
      System.out.println(“JSONTOJAVAOBJ============”+JSON.parseObject(jsonStr,new TypeReference<List<Scene>>(){}));  
      return null;  
  }  
}