1.Json传递数据两种方式(json大全)

----------------------------字符串

var list1 = ["number","name"];

var param={};

param["list1"] =list1;

param["test"] ="java";

var json=JSON.stringify(param);

$.ajax({

type:'POST',

url: CTX+ '双击查看原图eckInvoice双击查看原图st',

data: {

ids: json

dataType:"json",

async:false,

success: function(data){if(data.success) {

value= 'success';

$("#table").bootstrapTable('refresh');

}else{

value= 'fail';

}

showAlertFrame(value, data.message);

error: function (e) {

}

});

};

@PostMapping(value = "/list")

@ResponseBodypublic voidinvoiceDetail2(String ids) {

JSONObject jsonobject=JSONObject.parseObject(ids);

JSONArray jsonArray= JSONArray.parseArray(jsonobject.get("list1").toString());

List list = jsonArray.toJavaList(String.class);

}

@PostMapping(value= "/list2")

@ResponseBodypublic voidlist2(@RequestBody ScannerVo vo) {

List list =vo.getList1();//JSONArray jsonArray = JSONArray.parseArray(vo.getList1());//List list = jsonArray.toJavaList(String.class);

}

-------------------------------------对象

public class ScannerVo {

private List list1;

public List getList1() {

return list1;

}

public void setList1(List list1) {

this.list1 = list1;

}

public String getTest() {

return test;

}

public void setTest(String test) {

this.test = test;

}

private String test;

}

var getInvoice = function (invoiceCode,invoiceNum) {

var list1 = ["number","name"];

var param = {};

param["list1"] = list1;

param["test"] ="java";

var json = JSON.stringify(param);

$.ajax({

type: 'POST',

url: CTX + '/checkInvoice/list2',

data: json,

dataType: "json",

async:false,

contentType: 'application/json',

success: function(data){

if(data.success) {

value = 'success';

$("#table").bootstrapTable('refresh');

} else {

value = 'fail';

}

showAlertFrame(value, data.message);

error: function (e) {

}

});

};

@PostMapping(value = "双击查看原图st2")

@ResponseBodypublic voidlist2(@RequestBody ScannerVo vo) {

List list =vo.getList1();//JSONArray jsonArray = JSONArray.parseArray(vo.getList1());//List list = jsonArray.toJavaList(String.class);

}

springmvc接收json数据的4种方式

ajax我经常用到，传的数据是json数据，json数据又有对象，数组。所有总结下springmvc获取前端传来的json数据方式：

1、以RequestParam接收

前端传来的是json数据不多时：[id:id],可以直接用@RequestParam来获取值

@AutowiredprivateAccomodationService accomodationService;

@RequestMapping(value= "/update")

@ResponseBodypublic String updateAttr(@RequestParam ("id") intid) {int res=accomodationService.deleteData(id);return "success";

}

2、以实体类方式接收

前端传来的是一个json对象时：{【id，name】},可以用实体类直接进行自动绑定

@AutowiredprivateAccomodationService accomodationService;

@RequestMapping(value= "/add")

@ResponseBodypublicString addObj(@RequestBody Accomodation accomodation) {this.accomodationService.insert(accomodation);return "success";

}

！

3、以Map接收

前端传来的是一个json对象时：{【id，name】},可以用Map来获取

@AutowiredprivateAccomodationService accomodationService;

@RequestMapping(value= "/update")

@ResponseBodypublic String updateAttr(@RequestBody Mapmap) {if(map.containsKey("id"){

Integer id= Integer.parseInt(map.get("id"));

}if(map.containsKey("name"){

String objname= map.get("name").toString();

}//操作 ...

return "success";

}

4、以List接收

当前端传来这样一个json数组：[{id,name},{id,name},{id,name},...]时，用List接收

@AutowiredprivateAccomodationService accomodationService;

@RequestMapping(value= "/update")

@ResponseBodypublic String updateAttr(@RequestBody Listlist) {for(Accomodation accomodation:list){

System.out.println(accomodation.toString());

}return "success";

}

Springmvc接受json参数总结

关于springmvc的参数我觉得是个头痛的问题，特别是在测试的时候，必须要正确的注解和正确的contype-type 后端才能被正确的请求到，否则可能报出400，415等等bad request。

1，最简单的GET方法，参数在url里面，比如：

@RequestMapping(value = “/artists/{artistId}”, method = {RequestMethod.GET})

@PathVariable去得到url中的参数。

public Artist getArtistById(@PathVariable String artistId)

2，GET方法，参数接在url后面。

@RequestMapping(value = "/artists", method ={RequestMethod.GET})publicResponseVO getAllArtistName(

@RequestParam(name= "tagId", required = false) final String tagId)

访问的时候/artists?tagId=1

@RequestParam相当于request.getParameter(“”)

3，POST方法，后端想得到一个自动注入的对象

@RequestMapping(value = "/addUser", method ={RequestMethod.POST})public void addUser(@RequestBody UserPO users){

这里要注意@RequestBody，它是用来处理前台定义发来的数据Content-Type: 不是application/x-www-form-urlencoded编码的内容，例如application/json, application/xml等；我们使用@RequestBody注解的时候，前台的Content-Type必须要改为application/json，如果没有更改，前台会报错415(Unsupported Media Type)。后台日志就会报错Content type ‘application/x-www-form-urlencoded;charset=UTF-8’ not supported

如果是表单提交 Contenttype 会是application/x-www-form-urlencoded，可以去掉@RequestBody注解

---------------------

这时聪明的spring会帮我按照变量的名字自动注入，但是这是很容易遇到status=400

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.

Tue Feb 06 16:49:34 GMT+08:00 2018

There was an unexpected error (type=Bad Request, status=400).

Validation failed for object='user'. Error count: 1

这是springboot的报错，原因是bean中有不能注入的变量，因为类型的不一样，一般是date和int的变量，所以在使用的时候要特别注意。

---------------------

如果前端使用的$.ajax来发请求，希望注入一个bean。这时又有坑了，代码如下：

$.ajax({

headers: {

Accept:"application/json; charset=utf-8"},

method :'POST',

url:"http://localhost:8081/user/saveUser",

contentType:'application/json',

dataType:"json",

data: json,//async: false,//true:异步，false:同步//contentType: false,//processData: false,

success: function (data) {if(data.code == "000000"){

alert(data.desc);

window.location.href="http://localhost:8081/login.html";

}

error: function (err) {

alert("error");

}});---------------------

马上就报错了：

**error

“Bad Request”

exception

“org.springframework.http.converter.HttpMessageNotReadableException”

message

“JSON parse error: Unrecognized token ‘name’: was expecting ‘null’, ‘true’, ‘false’ or NaN; nested exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token ‘name’: was expecting ‘null’, ‘true’, ‘false’ or NaN↵ at [Source: java.io.PushbackInputStream@7fc056ba; line: 1, column: 6]”

path

“/user/saveUser”

status

400

timestamp

1518094430114**

这是看看发送的参数：

居然不是我拼装好的json，

data: json, 改成 data: JSON.stringify(json)，后端接收json String,json只是个对象，所以解析不了！

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4，POST方法，需要得到一个List的类型

@RequestMapping(value = “/addUser”, method = {RequestMethod.POST})