ssm框架 返回 json格式数据

1. maven导入json jar包

   
            org.codehaus.jackson  
            jackson-mapper-asl  
            1.9.13  
         

2.在Spring-mvc.xml中配置

3.Controller中使用@ResponseBody注解

 @RequestMapping(value = "/showOrderNo", method = RequestMethod.POST)  
    public @ResponseBody PaymaxRefundResult post(@RequestParam(required=false) String name, @RequestParam ( "id" ) int id){    
        PaymaxRefundResult pay = this.payService.getPaymaxRefundResultById(id); 
        return pay;  
    }