Spring MVC中不存在必需的字符串参数错误
我尝试在Spring MVC中对我的控制器进行AJAX查询。
我的动作代码是:
@RequestMapping(value = "events/add", method = RequestMethod.POST)public void addEvent(@RequestParam(value = "start_date") String start_date, @RequestParam(value = "end_date") String end_date, @RequestParam(value = "text") String text, @RequestParam(value = "userId") String userId){
//some code
}
我的Ajax查询是:
$.ajax({ type: "POST",
url:url,
contentType: "application/json",
data: {
start_date: scheduler.getEvent(id).start_date,
end_date: scheduler.getEvent(id).end_date,
text: scheduler.getEvent(id).text,
userId: userId
},
success:function(result){
//here some code
}
});
但我得到一个错误:
必需的字符串参数’‘start_date不存在
为什么?据我所知,它像(@RequestParam(value = "start_date") String start_date
现在我给404我的班级接受数据
public class EventData { public String end_date;
public String start_date;
public String text;
public String userId;
//Getters and setters
}
我的js AJAX调用是:
$.ajax({ type: "POST",
url:url,
contentType: "application/json",
// data: eventData,
processData: false,
data: JSON.stringify({
"start_date": scheduler.getEventStartDate(id),
"end_date": scheduler.getEventEndDate(id),
"text": scheduler.getEventText(id),
"userId": "1"
}),
和控制器动作:
@RequestMapping(value = "events/add", method = RequestMethod.POST)public void addEvent(@RequestBody EventData eventData){
}
JSON数据是:
end_date: "2013-10-03T20:05:00.000Z"start_date: "2013-10-03T20:00:00.000Z"
text: "gfsgsdgs"
userId: "1"
回答:
在服务器端,您希望请求参数作为查询字符串,但在客户端,您将发送json对象。要绑定json,您将需要创建一个包含所有参数的类,并使用@RequestBody批注而不是@RequestParam。
@RequestMapping(value = "events/add", method = RequestMethod.POST)public void addEvent(@RequestBody CommandBean commandBean){
//some code
}
以上是 Spring MVC中不存在必需的字符串参数错误 的全部内容, 来源链接: utcz.com/qa/418120.html