<dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-core-asl</artifactId><version>1.9.11</version>
</dependency>
<dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>1.9.11</version>
</dependency>

<mvc:annotation-driven />//不要忘了命名空间配置

$.ajax({type : "post",dataType : "json",url : "/testRequestBody",data:{name:"韦德",age:35},success : function(result) {}
});

@RequestMapping("/testRequestBody")
public String testRequestBody(@RequestParam Map<String, Object> map) {System.out.println(map);// {name=韦德, age=35}return "index";
}

$.ajax({type : "post",dataType : "json",url : "/testRequestBody",contentType:"application/json",   data:JSON.stringify({name:"韦德",win:[2006,2012,2013],age:35}),success : function(result) {}
});

@RequestMapping("/testRequestBody")
public String testRequestBody(@RequestBody Map<String, Object> map) {System.out.println(map);//{name=韦德, win=[2006, 2012, 2013], age=35}return "index";
}

private void writeJson(HttpServletResponse response, Object object) {String json = JSON.toJSONString(object);response.setCharacterEncoding("UTF-8");response.setContentType("application/json; charset=utf-8");PrintWriter out = null;try {out = response.getWriter();out.write(json);} catch (IOException e) {e.printStackTrace();} finally {if (out != null) {out.close();}}
}

$.ajax({type : "post",dataType : "json",url : "/testResponseBody",success : function(result) {console.info(result);}
});

@RequestMapping("/testResponseBody")
@ResponseBody
public Map<String, Object> testRequestBody() {Map<String, Object> result = new HashMap<String, Object>();result.put("name", "韦德");result.put("age", 35);return result;
}

{"age": 35,"name": "韦德"
}