我个人开发常用的如下所示:

之所以像下面这样下，一是前台Ajax，二是为安卓提供接口数据

现在常用的是返回JSON数据，XML的时代一去不复返

JSON相对于XML要轻量级的多

对JSON不是十分熟悉的可参考此网站：http://www.w3school.com.cn/json/index.asp

对Ajax不是十分熟悉的可参考此网站:http://www.w3school.com.cn/ajax/index.asp

 

下面例子环境为:JDK8+tomcat7+MAVEN+WINDOWS环境

框架环境为:Spring+Mybatis+SpringMVC

 

第一种方式:

@RequestMapping(value = "/getUserInfo2", method = RequestMethod.POST, produces = "application/json;charset=utf-8")    @ResponseBody    public String getUserInfo(String User_No, Model model) {        User user = userService.findUserInfo(User_No);        if (user != null) {            Map
     
       map = new HashMap
      
       ();            map.put("user", user);            model.addAttribute("user", user);            return JSON.toJSONString(map);        } else {            String msg = "{\"returnMsg\":\"不存在\"}";            Map
       
         returnMsg = JSON.parseObject(msg);            return JSON.toJSONString(returnMsg);        }    }
       
      
     

 

第二种方式:

@RequestMapping(value="getHeadHotelIdInfo",method=RequestMethod.POST,produces="application/json;charset=utf-8")    @ResponseBody    public String getHeadHotelIdInfo(HttpServletRequest request) {                        String ids = request.getParameter("id");                Integer id = new Integer(ids);                Map
     
       map = new HashMap
      
       ();                HeadHotel hh = headHotelService.selectById(id);                map.put("hh", hh);                return JSONObject.toJSONString(map);                            }
      
     

 

第三种方式:

@RequestMapping(value="/deleteHeadHotelInfo", method = RequestMethod.POST, produces = "application/json;charset=utf-8")    @ResponseBody    public Object deleteHeadHotelInfo(HttpServletRequest request) {                    JSONObject json = new JSONObject();        String ids = request.getParameter("id");        logger.info(ids);        Integer id = new Integer(ids);        HeadHotel hh = headHotelService.selectById(id);                try {                        int lines = hotelChainService.TreeSelectHotelChainSize(hh.getNo());                        if(lines==0) {
                    headHotelService.deleteHeadHotelInfo(id);                                    json.put("returnCode", "000000");                json.put("returnMsg", "删除集团公司成功");                logger.info("删除成功");                            }else {                                                json.put("returnCode", "000000");                json.put("returnMsg", "存在子酒店不能删除");                logger.info("删除失败");                            }                                            } catch (Exception e) {            e.printStackTrace();                   json.put("returnCode", "111111");            json.put("returnMsg", "删除集团公司失败");            logger.error("删除失败");        }        return json;    }

 

第四种方式:

@RequestMapping(value="removePermission",method=RequestMethod.POST,produces="application/json;charset=utf-8")	@ResponseBody	public Object removePermission(@RequestBody QueryVo qv,HttpServletRequest request, Model model) {		JSONObject json = new JSONObject();			Integer id[] = qv.getId();				int size=java.lang.reflect.Array.getLength(qv.getId());		logger.info("ID数量:"+size);  		try {			for (int i = 0; i < id.length; i++) {				RoleResource rr = new RoleResource();				rr.setId(id[i]);				logger.info("ID:"+id[i]);				List
     
       rs = new ArrayList
      
       ();				rs.add(rr);				roleResourceService.removeRoleResourceStatus(rs);						}						json.put("returnCode", "000000");			json.put("returnMsg", "权限修改成功");			logger.info("权限修改成功");					} catch (Exception e) {			json.put("returnCode", "000000");			json.put("returnMsg", "权限修改失败");			logger.error("权限修改失败");					}		return json;			   	}
      
     

 

结合QueryVO：

package cn.pms.vo;import java.util.List;import cn.pms.model.AccountCoupon;/** * 多参数传递定义QueryVo * @author youcong * */public class QueryVo{    private List
     
       acs;    String[] memberId;        private String couponId;        /*     * 角色编号     */    String[] roleNo;        /**     * 资源编号     */    String[] resourceNo;        /**     * 角色-资源 ID     * @return     */    Integer id[];    public Integer[] getId() {        return id;    }    public void setId(Integer[] id) {        this.id = id;    }    public String[] getRoleNo() {        return roleNo;    }    public void setRoleNo(String[] roleNo) {        this.roleNo = roleNo;    }    public String[] getResourceNo() {        return resourceNo;    }    public void setResourceNo(String[] resourceNo) {        this.resourceNo = resourceNo;    }    public String[] getMemberId() {        return memberId;    }    public void setMemberId(String[] memberId) {        this.memberId = memberId;    }    public String getCouponId() {        return couponId;    }    public void setCouponId(String couponId) {        this.couponId = couponId;    }    public List
      
        getAcs() {        return acs;    }    public void setAcs(List
       
         acs) {        this.acs = acs;    }    }
       
      
     

 

第五种方式:

@RequestMapping(value = "/updateVersion", method = RequestMethod.POST, produces = "application/json;charset=utf-8")    @ResponseBody    public String updateHeadHotel(@RequestBody AppVersion appVersion) {        Map
     
       map = new HashMap
      
       ();            logger.info(appVersion);        try {            logger.info("APP名字:"+appVersion.getAppName());            // 调用数据库修改操作            appVersion.setUpdateTime(Tools.getCurrentDate());            appVersion.setServerFlag("1");            appVersionService.updateById(appVersion);            map.put("returnCode", "000000");            map.put("message", "成功更新版本信息");                }catch (Exception e) {            // TODO: handle exception            map.put("returnCode", "111111");            map.put("message", "更新版本信息失败");                }                return JSONObject.toJSONString(map);    }
      
     

 

第六种方式:

@RequestMapping(value="/delectHotel", method = RequestMethod.POST, produces = "application/json;charset=utf-8")    @ResponseBody    public Map
     
       delectHotel(HttpServletRequest request) {                Map
      
        map = new HashMap
       
        ();                String id = request.getParameter("id");        logger.info("delectHotel  ===== id : " + id);        //System.out.println("delectHotel  ===== id : " + id);        String hotelNo = request.getParameter("hotelNo");        logger.info("delectHotel  ===== hotelNo : " + hotelNo);        //System.out.println("delectHotel  ===== hotelNo : " + hotelNo);                try {                        List
        
          room_list = roomService.selectRoomByHotelNo(hotelNo.trim());            //System.out.println("delectHotel  =====  room_list : " + room_list);            //如果集合不为空，说明该酒店关联有房间, 不允许删除            if(room_list != null) {                map.put("returnMsg", "该酒店关联有房间, 不允许删除!");                map.put("returnCode", "121212");                return map;            }                        hotelService.deleteHotelById(Integer.parseInt(id.trim()));            //成功            map.put("returnCode", "000000");            map.put("returnMsg", "success");        } catch (Exception e) {            e.printStackTrace();            //失败            map.put("returnCode", "111111");            map.put("returnMsg", "失败");        }        logger.info("map = " + map);        return map;    }
        
       
      
     

 

第七种方式:

@RequestMapping(value="/getServiceId", method = RequestMethod.POST, produces = "application/json;charset=utf-8")    @ResponseBody    public Object getServiceId(HttpServletRequest request) {                Map
     
       map = new HashMap
      
       ();                JSONObject json = new JSONObject();                logger.info("省     ================ " +  request.getParameter("province"));        logger.info("市     ================ " +  request.getParameter("cityname"));                            String city = request.getParameter("province");        String address = request.getParameter("cityname");                map.put("city", city);        map.put("address", address);                try {            //调用数据库查询操作            List
       
         yun_list = yuntuBaseService.selectYuntuBase(map);            logger.info("yun_list.size() : " + yun_list.size());            //成功            json.put("yun_list", yun_list);            json.put("returnCode", "000000");            json.put("returnMsg", "success");            return json;        } catch (Exception e) {            e.printStackTrace();            //插入数据库失败，返回失败码            json.put("returnCode", "111111");            json.put("returnMsg", "保存失败");            return json;        }            }
       
      
     

 

第八种方式:

@RequestMapping(value="/selMessageById", method = RequestMethod.POST, produces = "application/json;charset=utf-8")    @ResponseBody    public Object selMessageById(HttpServletRequest request) {                AJAXResult result = new AJAXResult();                String id = request.getParameter("id");        logger.info("id  = " + id);        try {                        Message message = messageService.selMessageById(Integer.parseInt(id.trim()));                        result.setData(message);            result.setSuccess(true);            result.setReturnCode("000000");            result.setReturnMsg("success");                    } catch (Exception e) {            e.printStackTrace();            //查询数据库失败，返回失败码            result.setSuccess(false);            result.setReturnCode("111111");            result.setReturnMsg("系统异常");            logger.error("result = " + result);            return result;        }                return result;        }

 

AJAXResul代码如下:

 

package cn.pms.model;import java.util.Map;public class AJAXResult {        private boolean success;        //返回码    private String returnCode;        //返回信息    private String returnMsg;        //返回数据    private Object data;        //数据    private Object datas;        private Map
     
       map;            public boolean isSuccess() {        return success;    }    public void setSuccess(boolean success) {        this.success = success;    }    public String getReturnCode() {        return returnCode;    }    public void setReturnCode(String returnCode) {        this.returnCode = returnCode;    }    public String getReturnMsg() {        return returnMsg;    }    public void setReturnMsg(String returnMsg) {        this.returnMsg = returnMsg;    }    public Object getData() {        return data;    }    public void setData(Object data) {        this.data = data;    }    public Object getDatas() {        return datas;    }    public void setDatas(Object datas) {        this.datas = datas;    }    public Map
      
        getMap() {        return map;    }    public void setMap(Map
       
         map) {        this.map = map;    }        }
       
      
     

 

 

常用AJAX请求后台数据的几种方式:

第一种:

var id = getQueryParam("id");    var zt = getQueryParam("zt");    var hotelNo = getQueryParam("hotelNo");    //alert("id = " + id + "zt = " + zt);    $.post("/ssm_pms/selectRoomById", { id : id }, function (result){                if(result.returnCode == "000000" && result.returnMsg == "success"){                        $("#RoomNo").val(result.room.roomNo);            $("#Status").val(result.room.roomStatus);        }else{            alert("connection error");        }            });

 

第二种:

var data = {        floor : name,        hotel_no : "88"    }        $.ajax({        url : "/ssm_pms/addFloor",        type : "POST",        contentType: 'application/json;charset=utf-8',        async : false,        data : JSON.stringify(data),        dataType : 'json',        success : function(result){            if(result.returnCode == "000000" && result.returnMsg == "success"){                //window.location.href = "";                closeWin();                alert("添加成功");            }else if(result.returnCode == "101011" && result.returnMsg == "重复，请重新输入"){                alert("重复，请重新输入");            }else{                //showTips(3, 'Name', data.State.Errkey);                alert("添加失败");            }        }    });

Ajax的get不常用，通常$.ajax够用了，有的时候常用的也就$.post，不过目前用的最多的还是$.ajax