jsonchange(jsonchange并执行)
如何实现实体与json的转化
在开发的过程中，会遇到实体与json格式转化以便符合微信接口需要的json格式以及请求接口获取的json转化为实体。我把一些公用的方法总结如下（特别说明：解析是用的flexJson）：
import java.util.ArrayList;
import java.util.List;
import flexjson.JSONDeserializer;
import flexjson.JSONSerializer;
public class JsonUtil {
/**
* 对象转化为字符串
* @param obj 要转化为json字符串的实体
*/
public static String getJsonStrFromObj(Object obj) {
JSONSerializer serializer = new JSONSerializer();
return serializer.serialize(obj);
}
/**
* 对象转化为json字符串
* @param obj 实体
* @param inParams 包含的字段数组
* @param exparams 不需要包含的字段
*/
public static String getJsonStrFromObj(Object obj, String[] inParams,String[] exParams) {
JSONSerializer serializer = new JSONSerializer();
serializer = serializer.include(inParams).exclude(exParams);
return serializer.serialize(obj);
}
/**
* 将对象转化为json字符串
* @param obj 实体
* @param exParams 不要包括的字段
*/
public static String getJsonStrFromObj(Object obj,String[] exParams) {
JSONSerializer serializer = new JSONSerializer();
serializer = serializer.exclude(exParams);
return serializer.serialize(obj);
}
/**
* 将List转化为json字符串
* @param objs list对象
* @return
*/
public static String getJsonStrFromList(ListObject objs){
return new JSONSerializer().exclude("class").serialize(objs);
}
/**
* 将List转化为json字符串
* @param objs list对象
* @param rootName 根名
* @param params 包括的字段
* @return
*/
public static String getJsonStrFromList(ListObject objs, String rootName,
String[] params) {
JSONSerializer serializer = new JSONSerializer();
serializer = serializer.include(params).exclude("class");
serializer.rootName(rootName);
return serializer.serialize(objs);
}
/**
* 将List转化为json字符串
* @param objs list对象
* @param rootName 根名
* @param params 包括的字段
* @return
*/
public static String getJsonStrFromList(ListObject objs, String rootName) {
JSONSerializer serializer = new JSONSerializer();
// serializer = serializer.exclude("class");
serializer.rootName(rootName);
return serializer.serialize(objs);
}
/**
* 将List转化为json字符串
* @param objs list对象
* @param rootName 根名
* @param params 包括的字段
* @return
*/
public static String getJsonStrFromList(ListObject objs, String[] params) {
JSONSerializer serializer = new JSONSerializer();
serializer = serializer.include(params).exclude("class");
return serializer.serialize(objs);
}
/**
* 将List转化为json字符串
* @param objs list对象
* @param rootName 根名
* @param params 包括的字段
* @return
*/
public static String getJsonStrFromList(ListObject objs, String[] inParams,String[] exParams) {
JSONSerializer serializer = new JSONSerializer();
serializer = serializer.include(inParams).exclude("class").exclude(exParams);
return serializer.serialize(objs);
}
/**
* 将字符串转化为实体
* @param T 实体
* @param source 要解析的字符串
* @param bean 要转化为的对象
* @return
*/
public static T T getObjFromJsonStr(String source, ClassT bean) {
return new JSONDeserializerT().deserialize(source, bean);
}
/**
* 将json中包含的class属性去除
* @param json 要转化的json
* @return
*/
public static String changeJson(String json){
int i = json.indexOf("\"class\":");
if(i!=-1){
int j = json.indexOf(",", i+1);
char c = json.charAt(j);
String subString="";
if((c+"").equals(",")){//第一个属性或者中间的属性出现
subString = json.substring(i, j+1);
}else if((c+"").equals("}")) {//在结尾的属性出现
subString = json.substring(i-1, j);
}
return json.replaceAll(subString, "");
}
return json;
}
}
请教json数据怎么在Controller接收
通过ajax方式在后台控制器接受
$("#xianluly").change(function () {
if ($("#xianluly").val() == "旅行社") {
$.ajax({
type: "POST", async: false, //用POST方式传输
url: '/HYFX/GetMem_TH', //目标地址
error: function (XMLHttpRequest, textStatus, errorThrown) {
alert("失败");
},
success: function (data) {
if (data != "") {
//成功
}
else {
alert("失败");
}
}
});
}
else
{ $("#spanly").hide(); }
});
后台和以前获取一样,通过request来获取就可以
C#怎么实现 实现 类的自动映射
有时候会遇到这样的问题，两个对象具有很多相同的属性，已知一个对象，要给另外一个对象赋值，这时候需要每个属性逐一赋值，会比较麻烦。
如果不考虑性能问题的话，可以使用对象映射的方式来赋值，实际上是利用了反射的机制，达到动态生成对象和动态类型转换的目的。
实现代码如下
using System;
using Newtonsoft.Json;
namespace ConsoleApplicationTest
{
class Program
{
static void Main(string[] args)
{
string s = string.Empty;
var person = new Person { Name = "张三", Age = "12", Birthday = "2015/10/31 19:56:30" };
var student = EntityMapperStudent, Person(person);
s = JsonConvert.SerializeObject(student);
Console.WriteLine(s);
Console.ReadKey();
}
static TTo EntityMapperTTo, TFrom(TFrom from)
{
var to = Activator.CreateInstanceTTo();
var tTo = typeof(TTo);
var psFrom = typeof(TFrom).GetProperties();
foreach (var pFrom in psFrom)
{
var vFrom = pFrom.GetValue(from);
if (vFrom != null)
{
var pTo = tTo.GetProperty(pFrom.Name);
if (pTo != null)
{
var pToType = pTo.PropertyType;
if (pToType.IsGenericType pToType.GetGenericTypeDefinition() == typeof(Nullable))
{
var vTo = Convert.ChangeType(vFrom, pToType.GetGenericArguments()[0]);
pTo.SetValue(to, vTo);
}
else
{
var vTo = Convert.ChangeType(vFrom, pTo.PropertyType);
pTo.SetValue(to, vTo);
}
}
}
}
return to;
}
public class Person
{
public string Name { get; set; }
public string Age { get; set; }
public string Birthday { get; set; }
}
public class Student
{
public string Name { get; set; }
public int Age { get; set; }
public DateTime Birthday { get; set; }
}
}
}
有谁能把下面的json的代码用通过程序后台把它给解析出来吗，无论用什么办法都行，算是小弟求求高手了..
用Jquery获取，稍等，我写个function给你 ，你这个是在什么页面得到的JSON数据，，我要是一个个TITILE对的话很慢的 最好把页面发给我 ,，taobao的json？？
实例如下，其他的你自己按照这个步骤写就OK了
script src="js/jquery-1.5.2.min.js" type="text/javascript"/script
script type="text/javascript"
//淘宝Json数据解析
$(document).ready(function(){
$('#btnChange').click(function(){
var data = eval("("+ $("#lblData").html() + ")");
//交易信息
var tradeinfo = data.trades_sold_get_response.trades.trade
var strResultHtml = $('#lblResult')
strResultHtml.append("买家昵称:" + tradeinfo[0].buyer_nick)
strResultHtml.append("br/买家获取点数:" + tradeinfo[0].buyer_obtain_point_fee)
strResultHtml.append("br/买家好评率:" + tradeinfo[0].buyer_rate)
strResultHtml.append("br/订单创建时间:" + tradeinfo[0].created)
});
});
/script
label id="lblData"
{"trades_sold_get_response":
{"trades":
{"trade":[{
"buyer_nick":"夏夏海洋星",
"buyer_obtain_point_fee":0,
"buyer_rate":false,
"created":"2011-08-22 13:37:40",
"orders":{
"order":[
{"num":1,"pic_path":"http:\/\/img02.taobaocdn.com\/bao\/uploaded\/i2\/T1TVd1Xh0mXXamuZk._111505.jpg",
"price":"59.00","refund_status":"WAIT_SELLER_AGREE","sku_id":"9262433250","title":"麦考林 童装 小小航海家英雄勋章拉链衫"},
{"num":1,"pic_path":"http:\/\/img03.taobaocdn.com\/bao\/uploaded\/i3\/T1FEl0XgBDXXcfOKcW_023218.jpg",
"price":"35.00","refund_status":"WAIT_SELLER_AGREE","sku_id":"9090237554","title":"麦考林 童装 小小航海家Q版海盗T恤"},
{"num":1,"pic_path":"http:\/\/img01.taobaocdn.com\/bao\/uploaded\/i1\/T1jEx0XghzXXauDwsT_011702.jpg",
"price":"99.00","refund_status":"WAIT_SELLER_AGREE","sku_id":"9085695112","title":"麦考林 童装 男童潮童运动套装"}
]
},
"pay_time":"2011-08-22 13:39:32",
"payment":"213.00",
"point_fee":0,
"real_point_fee":0,
"receiver_address":"阳光100 F15-5-302",
"receiver_zip":"250022",
"seller_nick":"eurokids麦考林专卖",
"seller_rate":false,
"sid":"90106462245083",
"status":"WAIT_SELLER_SEND_GOODS",
"tid":90106462245083,
"title":"eurokids麦考林专卖",
"total_fee":"193.00",
"type":"fixed"
}]
},
"total_results":6}
}
/labelbr /
input type="button" id="btnChange" value="ChangeJsonToData" /br /
label id="lblResult"/label
java读取json文件的问题
Java 读写json格式的文件方法：
一、要解决这个问题首先要知道json格式是什么？
JSON格式：
比如学生有学号，姓名，性别等。
用json表示则为：
{"studno":"11111","studname":"wwww","studsex":"男"}(各个字段都是字符型）
这代表一个学生的信息。
如果多个，如下：
[{"studno":"122222","studname":"wwww","studsex":"男"},
{"studno":"11111","studname":"xxxx","studsex":"男"},
{"studno":"33333","studname":"ssss","studsex":"男"}]
这就是json格式。
二、那如何操作json格式的文件呢？
解答：就是直接读写文件，再把读出来的文件内容格式化成json就可以了。
三、具体操作：
1、有一个实体类，如下：
public?class?ElectSet?{
public?String?xueqi;
public?String?xuenian;
public?String?startTime;
public?String?endTime;
public?int?menshu;
public?String?isReadDB;
//{"xueqi":,"xuenian":,"startTime":,"endTime":,"renshu":,"isReadDB":}
public?String?getXueqi()?{
???return?xueqi;
}
public?void?setXueqi(String?xueqi)?{
???this.xueqi?=?xueqi;
}
public?String?getXuenian()?{
???return?xuenian;
}
public?void?setXuenian(String?xuenian)?{
???this.xuenian?=?xuenian;
}
public?String?getStartTime()?{
???return?startTime;
}
public?void?setStartTime(String?startTime)?{
???this.startTime?=?startTime;
}
public?String?getEndTime()?{
???return?endTime;
}
public?void?setEndTime(String?endTime)?{
???this.endTime?=?endTime;
}
public?int?getMenshu()?{
???return?menshu;
}
public?void?setMenshu(int?menshu)?{
???this.menshu?=?menshu;
}
public?String?getIsReadDB()?{
???return?isReadDB;
}
public?void?setIsReadDB(String?isReadDB)?{
???this.isReadDB?=?isReadDB;
}
}
2.有一个json格式的文件，存的就是他的信息，如下：
Sets.json:
{"xuenian":"2007-2008","xueqi":"1","startTime":"2009-07-19?08:30","endTime":"2009-07-22?18:00","menshu":"10","isReadDB":"Y"}
3.具体操作：
/*
*?取出文件内容，填充对象
*/
public?ElectSet?findElectSet(String?path){
???ElectSet?electset=new?ElectSet();
???String?sets=ReadFile(path);//获得json文件的内容
???JSONObject?jo=JSONObject.fromObject(sets);//格式化成json对象
???//System.out.println("------------"?jo);
???//String?name?=?jo.getString("xuenian");
???//System.out.println(name);
???electset.setXueqi(jo.getString("xueqi"));
???electset.setXuenian(jo.getString("xuenian"));
???electset.setStartTime(jo.getString("startTime"));
???electset.setEndTime(jo.getString("endTime"));
???electset.setMenshu(jo.getInt("menshu"));
???electset.setIsReadDB(jo.getString("isReadDB"));
???return?electset;
}
//设置属性，并保存
public?boolean?setElect(String?path,String?sets){
???try?{
????writeFile(path,sets);
????return?true;
???}?catch?(IOException?e)?{
????//?TODO?Auto-generated?catch?block
????e.printStackTrace();
????return?false;
???}
}
//读文件，返回字符串
public?String?ReadFile(String?path){
????File?file?=?new?File(path);
????BufferedReader?reader?=?null;
????String?laststr?=?"";
????try?{
?????//System.out.println("以行为单位读取文件内容，一次读一整行：");
?????reader?=?new?BufferedReader(new?FileReader(file));
?????String?tempString?=?null;
?????int?line?=?1;
?????//一次读入一行，直到读入null为文件结束
?????while?((tempString?=?reader.readLine())?!=?null)?{
??????//显示行号
??????System.out.println("line?"?line?":?"?tempString);
??????laststr?=?laststr?tempString;
??????line?;
?????}
?????reader.close();
????}?catch?(IOException?e)?{
?????e.printStackTrace();
????}?finally?{
?????if?(reader?!=?null)?{
??????try?{
???????reader.close();
??????}?catch?(IOException?e1)?{
??????}
?????}
????}
????return?laststr;
}
?????????//把json格式的字符串写到文件
public?void?writeFile(String?filePath,?String?sets)?throws?IOException?{
????FileWriter?fw?=?new?FileWriter(filePath);
????PrintWriter?out?=?new?PrintWriter(fw);
????out.write(sets);
????out.println();
????fw.close();
????out.close();
???}
4.调用，使用（在网站的controller里调用的）：
//取出json对象
public?void?GetElectSettings(HttpServletRequest?request,
????HttpServletResponse?response)?throws?Exception?{
???ElectSet?electset=new?ElectSet();
???String?absPath?=?request.getRealPath("\");
???String?filePath?=?absPath?"public\sets\electSets.json";
???electset=businessService.findElectSets(filePath);//这里是调用，大家自己改改，我调用的业务层?的。
???JSONArray?jsonItems?=?new?JSONArray();
???jsonItems.add(electset);
???JSONObject?jo=new?JSONObject();
???jo.put("data",?jsonItems);
???System.out.println(jo);
???request.setCharacterEncoding("utf-8");
???response.setContentType("application/json;charset=utf-8");
???PrintWriter?out?=?response.getWriter();
???out.print(jo);
}
//修改json文件
public?void?ChangeElectSet(HttpServletRequest?request,
????HttpServletResponse?response)?throws?Exception?{
???request.setCharacterEncoding("UTF-8");
???response.setContentType("text/json;charset=utf-8");
???log.info("reach?ChangeElectSet");
???String?json?=?(String)?request.getParameter("json").trim();
???log.info("Change?ElectSet");
???log.info(json);
???ElectSet?sets?=?new?ElectSet();
???JSONObject?jsonObject?=?JSONObject.fromObject(json);
???sets?=?(ElectSet)?JSONObject.toBean(jsonObject,?ElectSet.class);
???if(sets.getIsReadDB()=="false"){
????sets.setIsReadDB("否");
???}
???else{
????sets.setIsReadDB("是");
???}
???String?changes="{"xuenian":"";//因为json的属性要用引号，所以要用"转义一下
???changes?=sets.getXuenian()?"","xueqi":""?sets.getXueqi()?"","startTime":""?sets.getStartTime()?"","endTime":""?sets.getEndTime()?"","menshu":""?sets.getMenshu()?"","isReadDB":""?sets.getIsReadDB()?""}";
???System.out.println(changes);
???String?absPath?=?request.getRealPath("\");
???String?filePath?=?absPath?"public\sets\electSets.json";
json里面changeobjecttostring的方法如果对象为空值是转换成什么
JSON.stringify(要转换的object对象)。此方法返回的就是一个类似于{“name”:"张三","age":18}这样的字符串