本文将为您提供关于后台返回的json,我用了JSON.parse,将后台返回的json转成json对象,为什么变成了object?框架用的vue,求解答!还有各种undefined!!!的详细介绍,同
本文将为您提供关于后台返回的json,我用了JSON.parse,将后台返回的json转成json对象,为什么变成了object?框架用的vue,求解答!还有各种undefined!!!的详细介绍,同时,我们还将为您提供关于ajax如何经过后台返回json数组以及在在js中得到json对象、android 中解析后台返回的 json 字符串、android中解析后台返回的json字符串、bootstrap-table 后台返回的json显示不出来的实用信息。
本文目录一览:- 后台返回的json,我用了JSON.parse,将后台返回的json转成json对象,为什么变成了object?框架用的vue,求解答!还有各种undefined!!!
- ajax如何经过后台返回json数组以及在在js中得到json对象
- android 中解析后台返回的 json 字符串
- android中解析后台返回的json字符串
- bootstrap-table 后台返回的json显示不出来
后台返回的json,我用了JSON.parse,将后台返回的json转成json对象,为什么变成了object?框架用的vue,求解答!还有各种undefined!!!
ajax如何经过后台返回json数组以及在在js中得到json对象
首先是 前台ajax代码
$.ajax( {
type : "POST",
url : "url",
data: "",
success : function(msg) {
//此处msg并不是json对象,需要转换
json = JSON.parse(msg);
}
然后是后台:
这边如果是个list或数组
可以用
JSONArray jsonmap = JSONArray .fromObject(list);
如果是map<String,Object>如map<String,List>
就用
JSONObject jsonmap = JSONObject.fromObject(tMap); //System.out.println(jsonmap); //List<String> strList = new ArrayList<String>(); pWriter.print(jsonmap); pWriter.flush(); pWriter.close();
android 中解析后台返回的 json 字符串
普通形式的:服务器端返回的 json 数据格式如下:
{"userbean":{"Uid":"100196","Showname":"\u75af\u72c2\u7684\u7334\u5b50","Avtar":null,"State":1}}
分析代码如下:
// TODO 状态处理 500 200 int res = ; res = httpClient.execute(httpPost).getStatusLine().getStatusCode(); if (res == 200) { /** * 当返回码为200时,做处理 * 得到服务器端返回json数据,并做处理 * */ HttpResponse httpResponse = httpClient.execute(httpPost); StringBuilder builder = new StringBuilder(); BufferedReader bufferedReader2 = new BufferedReader( new InputStreamReader(httpResponse.getEntity().getContent())); String str2 = ""; for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2 .readLine()) { builder.append(s); } Log.i("cat", ">>>>>>" + builder.toString()); JSONObject jsonObject = new JSONObject(builder.toString()) .getJSONObject("userbean"); String Uid; String Showname; String Avtar; String State; Uid = jsonObject.getString("Uid"); Showname = jsonObject.getString("Showname"); Avtar = jsonObject.getString("Avtar"); State = jsonObject.getString("State"); 带数组形式的: 服务器端返回的数据格式为: {"calendar": {"calendarlist": [ {"calendar_id":"1705","title":"(\u4eb2\u5b50)ddssd","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288927800","endshowtime":"1288931400","allDay":false}, {"calendar_id":"1706","title":"(\u65c5\u884c)","category_name":"\u9ed8\u8ba4\u5206\u7c7b","showtime":"1288933200","endshowtime":"1288936800","allDay":false} ] } } 分析代码如下: // TODO 状态处理 500 200 int res = ; res = httpClient.execute(httpPost).getStatusLine().getStatusCode(); if (res == 200) { /** * 当返回码为200时,做处理 * 得到服务器端返回json数据,并做处理 * */ HttpResponse httpResponse = httpClient.execute(httpPost); StringBuilder builder = new StringBuilder(); BufferedReader bufferedReader2 = new BufferedReader( new InputStreamReader(httpResponse.getEntity().getContent())); String str2 = ""; for (String s = bufferedReader2.readLine(); s != null; s = bufferedReader2 .readLine()) { builder.append(s); } Log.i("cat", ">>>>>>" + builder.toString()); /** * 这里需要分析服务器回传的json格式数据, */ JSONObject jsonObject = new JSONObject(builder.toString()) .getJSONObject("calendar"); JSONArray jsonArray = jsonObject.getJSONArray("calendarlist"); for(int i=;i<jsonArray.length();i++){ JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i); CalendarInfo calendarInfo = new CalendarInfo(); calendarInfo.setCalendar_id(jsonObject2.getString("calendar_id")); calendarInfo.setTitle(jsonObject2.getString("title")); calendarInfo.setCategory_name(jsonObject2.getString("category_name")); calendarInfo.setShowtime(jsonObject2.getString("showtime")); calendarInfo.setEndtime(jsonObject2.getString("endshowtime")); calendarInfo.setAllDay(jsonObject2.getBoolean("allDay")); calendarInfos.add(calendarInfo); }总结,普通形式的只需用 JSONObject ,带数组形式的需要使用 JSONArray 将其变成一个 list。
android中解析后台返回的json字符串
普通形式的:
服务器端返回的json数据格式如下:
{"userbean":{"Uid":"100196","Showname":"\u75af\u72c2\u7684\u7334\u5b50","Avtar":null,"State":1}}
分析代码如下:
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|
// TODO 状态处理 500 200
int
res = ;
res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
if
(res == 200 ) {
/**
* 当返回码为200时,做处理
* 得到服务器端返回json数据,并做处理
* */
HttpResponse httpResponse = httpClient.execute(httpPost);
StringBuilder builder =
new
StringBuilder();
BufferedReader bufferedReader2 =
new
BufferedReader(
new
InputStreamReader(httpResponse.getEntity().getContent()));
String str2 =
""
;
for
(String s = bufferedReader2.readLine(); s != null ; s = bufferedReader2
.readLine()) {
builder.append(s);
}
Log.i(
"cat"
,
">>>>>>"
+ builder.toString());
JSONObject jsonObject =
new
JSONObject(builder.toString())
.getJSONObject(
"userbean"
);
String Uid;
String Showname;
String Avtar;
String State;
Uid = jsonObject.getString(
"Uid"
);
Showname = jsonObject.getString(
"Showname"
);
Avtar = jsonObject.getString(
"Avtar"
);
State = jsonObject.getString(
"State"
);
带数组形式的:
服务器端返回的数据格式为:
{
"calendar"
:
{
"calendarlist"
:
[
{
"calendar_id"
:
"1705"
,
"title"
:
"(\u4eb2\u5b50)ddssd"
,
"category_name"
:
"\u9ed8\u8ba4\u5206\u7c7b"
,
"showtime"
:
"1288927800"
,
"endshowtime"
:
"1288931400"
,
"allDay"
:
false
},
{
"calendar_id"
:
"1706"
,
"title"
:
"(\u65c5\u884c)"
,
"category_name"
:
"\u9ed8\u8ba4\u5206\u7c7b"
,
"showtime"
:
"1288933200"
,
"endshowtime"
:
"1288936800"
,
"allDay"
:
false
}
]
}
}
分析代码如下:
// TODO 状态处理 500 200
int
res = ;
res = httpClient.execute(httpPost).getStatusLine().getStatusCode();
if
(res == 200 ) {
/**
* 当返回码为200时,做处理
* 得到服务器端返回json数据,并做处理
* */
HttpResponse httpResponse = httpClient.execute(httpPost);
StringBuilder builder =
new
StringBuilder();
BufferedReader bufferedReader2 =
new
BufferedReader(
new
InputStreamReader(httpResponse.getEntity().getContent()));
String str2 =
""
;
for
(String s = bufferedReader2.readLine(); s != null ; s = bufferedReader2
.readLine()) {
builder.append(s);
}
Log.i(
"cat"
,
">>>>>>"
+ builder.toString());
/**
* 这里需要分析服务器回传的json格式数据,
*/
JSONObject jsonObject =
new
JSONObject(builder.toString())
.getJSONObject(
"calendar"
);
JSONArray jsonArray = jsonObject.getJSONArray(
"calendarlist"
);
for
(
int
i=;i<jsonArray.length();i++){
JSONObject jsonObject2 = (JSONObject)jsonArray.opt(i);
CalendarInfo calendarInfo =
new
CalendarInfo();
calendarInfo.setCalendar_id(jsonObject2.getString(
"calendar_id"
));
calendarInfo.setTitle(jsonObject2.getString(
"title"
));
calendarInfo.setCategory_name(jsonObject2.getString(
"category_name"
));
calendarInfo.setShowtime(jsonObject2.getString(
"showtime"
));
calendarInfo.setEndtime(jsonObject2.getString(
"endshowtime"
));
calendarInfo.setAllDay(jsonObject2.getBoolean(
"allDay"
));
calendarInfos.add(calendarInfo);
}
|
总结,普通形式的只需用JSONObject ,带数组形式的需要使用JSONArray 将其变成一个list。
bootstrap-table 后台返回的json显示不出来
protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
req.setCharacterEncoding("utf-8");
resp.setContentType("text/html;charset=utf-8");
resp.setCharacterEncoding("UTF-8");
PrintWriter out=resp.getWriter();
int id=Integer.parseInt(req.getParameter("id"));
DBdao dbdao=new DBdao();
if(id==1){
//定义初始页数
int page =req.getParameter("offset")==null? 1 : Integer.parseInt(req.getParameter("offset"));
//定义每页显示数量
int pageSize=req.getParameter("limit")==null? 5 : Integer.parseInt(req.getParameter("limit"));
dbdao.setPagecount(page);
dbdao.setPagesize(pageSize);
List<Map<String ,Object>> list=dbdao.page("gm_type","*", "", "");
List<gm_type> gmlist=new ArrayList<gm_type>();
for(Map<String, Object> map1:list){
String path=map1.get("path").toString();
gm_type gm_type=new gm_type(Integer.parseInt(map1.get("id").toString()),
map1.get("name").toString(), Integer.parseInt(map1.get("pid").toString()),
path);
gmlist.add(gm_type);
}
String string="{\"total\":"+dbdao.getRecordcount()+",\"rows\":"+JSON.toJSON(gmlist)+"}";
System.out.println(string);
out.print(JSON.toJSONString(string));
}
$("#sample-table").bootstrapTable({
url:''/buyla/ProductsList'',
//contentType: "application/x-www-form-urlencoded",
dataType:"json",
pagination:true,
queryParamsType: "limit",//查询参数组织方式
queryParams : queryParams,
cache:false,
pageNumber: 1,
pageSize: 5,
pageList:[5,10,15,20],
//toolbar:"#toolbar",
showRefresh: false,//刷新按钮
showColumns: false,//列选择按钮
uniqueId:"userName",
sidePageination:"server",
columns:[{
field:''id'',
title:''分类编号'',
align:''center'',
width:''80px'',
valign:''bottom'',
sortable:true
},{
field:''name'',
title:''分类名'',
align:''center'',
width:''80px'',
valign:''bottom'',
sortable:true
},{
field:''pid'',
title:''父类编号'',
align:''center'',
width:''80px'',
valign:''bottom'',
sortable:true
},{
field:''path'',
title:''父类路径'',
align:''center'',
width:''80px'',
valign:''bottom'',
sortable:true
}],
responseHandler: function(res) {
alert(res.rows);
return {
"total": res.total,//总页数
"rows": res.rows //数据
};
},
});
};
function queryParams(params){
var temp = {
id: 1,
offset:params.pageNumber,
limit:params.limit,
};
return temp;
}
关于后台返回的json,我用了JSON.parse,将后台返回的json转成json对象,为什么变成了object?框架用的vue,求解答!还有各种undefined!!!的介绍已经告一段落,感谢您的耐心阅读,如果想了解更多关于ajax如何经过后台返回json数组以及在在js中得到json对象、android 中解析后台返回的 json 字符串、android中解析后台返回的json字符串、bootstrap-table 后台返回的json显示不出来的相关信息,请在本站寻找。
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