map 与 json 格式之间转换

前后台交互时采用JSON格式进行交互。前端接收到请求数据后保存为MAP格式。传给后台时采用JSON格式。 分别写了二种方法进行比较处理。

- 方法一：

String strRecvPage = "{"; Set<String> keySet = paramMap.keySet(); for(Iterator<String> it =keySet.iterator();it.hasNext();){ String key = it.next(); String value = paramMap.get(key); System.out.print(key + ":" + value + "\n"); strRecvPage += "\"" + key+ "\":"; strRecvPage += "\"" + value+ "\","; } if (strRecvPage.lastIndexOf(",") > 0){ strRecvPage = strRecvPage.substring(0, strRecvPage.lastIndexOf(",")); } strRecvPage += "}"; //out : {"pgRetUrl":"http://127.0.0.1:8080/PayTestSuites/callLBM/callBack?device=PC","certType":"01","bgRetUrl":"http://www.baidu.com","ordSeqId":"00000000000000002017080600000005","respmsg":"手机通道暂不支持该银行！","cardNo":"6210816270031359369","respcode":"9999","device":"PC","certNo":"331001190007020612","appSysId":"90000","cardPhone":"13800138000","ordDate":"20170806","usrName":"台州市","signature":"e1a0e2cb6749b0f23a6e2fcd00bb1317"} 方法二： //map2json方法 public static JSONObject map2Json(HashMap<String,String> map){ JSONObject json = new JSONObject(); Set<String> set = map.keySet(); for (Iterator<String> it = set.iterator();it.hasNext();) { String key = it.next(); json.put(key, map.get(key)); } return json; } //方法调用处 String strJson = map2Json(paramMap).toString(); //out: {"pgRetUrl":"http://127.0.0.1:8080/PayTestSuites/callLBM/callBack?device=PC","certType":"01","bgRetUrl":"http://www.baidu.com","ordSeqId":"00000000000000002017080600000005","respmsg":"手机通道暂不支持该银行！","cardNo":"6210816270031359369","respcode":"9999","device":"PC","certNo":"331001190007020612","appSysId":"90000","cardPhone":"13800138000","ordDate":"20170806","usrName":"台州市","signature":"e1a0e2cb6749b0f23a6e2fcd00bb1317"}