基于restful服务端接口(一)

熟练使用restful接口

当我们会使用restful接口后，我们想进一步的学习restful接口。

我们都知道，用于接口传输参数一般有两种方式：XML、json。

下面就是使用json，来进行数据交互。

1）通过get的方式

    // 通过json数据，改变后台的结果
    @GET
    @Path("/getTestInfoItemJson")
    @Produces(MediaType.APPLICATION_JSON)
    public String getMassarrayInfo(@Context HttpServletRequest request,
            @Context HttpServletResponse response) throws Exception {
        Map<String, Object> map = new HashMap<String, Object>();
        // ajax跨域请求
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods","POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");

        try {
            String jsondata = request.getParameter("data");
            String result = "", MId = "", code = "";
            JSONObject fromObject2 = JSONObject.fromObject(jsondata);
            // 得到主表ID
            MId = (String) fromObject2.get("mId");

            JSONArray fromObject = fromObject2.getJSONArray("infoData");
            if (fromObject != null) {
                for (int i = 0; i < fromObject.size(); i++) {
                    JSONObject jsonJ = fromObject.getJSONObject(i);

                    // 得到json对象
                    if (jsonJ.containsKey("code")) {
                        code = jsonJ.getString("code");
                        result = jsonJ.getString("result");
                    } 
                    //这里用作自己的逻辑编写
                }
            }

            map.put("result", "1");
        } catch (Exception e) {
            e.printStackTrace();
            map.put("result", "0");
        }
        String jsonString = JsonUtils.toJsonString(map);
        return jsonString;
    }

2）通过post方式

@POST
    @Path("/createTest")
    @Produces(MediaType.APPLICATION_JSON)
    @Consumes(MediaType.APPLICATION_JSON)
    public String createSampleOrder(@Context HttpServletRequest request,
            @Context HttpServletResponse response) throws Exception {
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods","POST, GET, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "3600");
        response.setContentType("application/json;charset=utf-8");

        StringBuffer str = new StringBuffer();
        JSONObject json=new JSONObject(); 
        String code = "";
        try {
            BufferedInputStream in = new BufferedInputStream(request.getInputStream());
            int i;
            char c;
            while ((i = in.read()) != -1) {
                c = (char) i;
                str.append(c);
            }
            String strJson = java.net.URLDecoder.decode(str.toString(),"utf-8");
            System.out.println("接收json："+strJson);

            if(str!=null){
                JSONObject dataJson = JSONObject.fromObject(strJson);
                JSONObject data = dataJson.getJSONObject("data");
                String testDate = dataJson.getString("testDate");
                System.out.println("接收data："+data);
                System.out.println("接收时间："+testDate);
                code = data.getString("testNo");//测试编码

                //填写逻辑代码

                json.put("error", "0");
                json.put("errmsg", "");
            }
        } catch (Exception ex) {
            ex.printStackTrace();
            json.put("errno", "1");
            json.put("errmsg", ex.getMessage());
        }
        System.out.println("返回json："+json.toString());
        //HttpPostData(code);
        return json.toString();
    }