jquery post json to spring contoller(spring version 3.1)

jquery post json data to spring contoller

please refer:

http://stackoverflow.com/questions/15532323/spring-3-2-jackson2-400-bad-request

http://ahlearns.wordpress.com/2011/07/29/spring-3-mvc-requestbody-deserialization-of-custom-list-objects/

1：首先要配置jacksonMessageConverter。

2：ajax要设置contentType:"application/json; charset=utf-8"(否则会报application/x-www-form-urlencoded not supported), data要用JSON.stringify(your json data).

3：在controller方法里只能有一个参数,且要加上@RequestBody, 最好用javaBean[ ]接收, 不要用ArrayList<POJO>, 因为type erasure导致你得到的是ArrayList<HashMap>。或者你可以写一个temp POJO2 extends ArrayList<POJO>,然后用POJO2去接, 这样泛型信息会保留下来,(not test and not recommend)