【发布时间】：2020-05-17 15:25:36
【问题描述】：
我想从 AJAX 响应返回的嵌套数组中获取特定值， 下面是我来自 jsp 的 ajax 调用，并在下面发布了返回响应。
$.ajax({
url: "servletCall.jsp",
type: "POST",
dataType:"html",
data: {
appId:appID,
functionalID : functionalID,
async:false,
cache: false,
},
ContentType:'json',
success: function(data){
data = data.replace(/\\n/g, "\\n")
.replace(/\\'/g, "\\'")
.replace(/\\"/g, '\\"')
.replace(/\\&/g, "\\&")
.replace(/\\r/g, "\\r")
.replace(/\\t/g, "\\t")
.replace(/\\b/g, "\\b")
.replace(/\\f/g, "\\f");
data = data.replace(/[\u0000-\u001F]+/g,"");
var jsonObj = JSON.parse(JSON.stringify(data));
// console.log('NOTHINH'+jsonObj) ;
newString = jsonObj.replace(/<(?:.|\n)*?>/gm, '');
// console.log(newString) ;
alert(newString['functionalSubDomainName']);
alert(newString['jsonArray2']);
alert(newString.functionalSubDomainName);
)};
newString:JSON 响应：来自 ServletCall.jsp，后来被 stringfy 解析
{
"jsonArray2":[
{
"pkApplicationid":450.0,
"success":false,
"numberOfCustomerUsers":0,
"numberofCustomers":0,
"dGFFCorpSecInfo":"",
"dGFFCorpSecDisas":"",
"securitycompliancecomment":"",
"dedicatedFTE":0,
"noOfCountries":0,
"noOfCountriesR":0,
"noOfA2AInterfaces":0,
"noOfA2AInterfacesR":0,
"noOfB2BInterfaces":0,
"noOfB2BInterfacesR":0,
"totalNoOfUsers":0,
"totalNoOfUsersR":0,
"noOfStations":0,
"productWrite":false,
"functionalDomainID":1018,
"functionalDomainName":"Product Operations / Customer Service",
"functionalSubDomainID":1020,
"functionalSubDomainName":"VAS-WMS"
},
{
"pkApplicationid":450.0,
"success":false,
"numberOfCustomerUsers":0,
"numberofCustomers":0,
"dGFFCorpSecInfo":"",
"dGFFCorpSecDisas":"",
"securitycompliancecomment":"",
"dedicatedFTE":0,
"noOfCountries":0,
"noOfCountriesR":0,
"noOfA2AInterfaces":0,
"noOfA2AInterfacesR":0,
"noOfB2BInterfaces":0,
"noOfB2BInterfacesR":0,
"totalNoOfUsers":0,
"totalNoOfUsersR":0,
"noOfStations":0,
"productWrite":false,
"functionalDomainID":1021,
"functionalDomainName":"Finance",
"functionalSubDomainID":1049,
"functionalSubDomainName":"Enterprise Performance Management"
},
{
"pkApplicationid":450.0,
"success":false,
"numberOfCustomerUsers":0,
"numberofCustomers":0,
"dGFFCorpSecInfo":"",
"dGFFCorpSecDisas":"",
"securitycompliancecomment":"",
"dedicatedFTE":0,
"noOfCountries":0,
"noOfCountriesR":0,
"noOfA2AInterfaces":0,
"noOfA2AInterfacesR":0,
"noOfB2BInterfaces":0,
"noOfB2BInterfacesR":0,
"totalNoOfUsers":0,
"totalNoOfUsersR":0,
"noOfStations":0,
"productWrite":false,
"functionalDomainID":1590,
"functionalDomainName":"Supporting Applications",
"functionalSubDomainID":1064,
"functionalSubDomainName":"Document Logistics"
},
{
"pkApplicationid":450.0,
"success":false,
"numberOfCustomerUsers":0,
"numberofCustomers":0,
"dGFFCorpSecInfo":"",
"dGFFCorpSecDisas":"",
"securitycompliancecomment":"",
"dedicatedFTE":0,
"noOfCountries":0,
"noOfCountriesR":0,
"noOfA2AInterfaces":0,
"noOfA2AInterfacesR":0,
"noOfB2BInterfaces":0,
"noOfB2BInterfacesR":0,
"totalNoOfUsers":0,
"totalNoOfUsersR":0,
"noOfStations":0,
"productWrite":false,
"functionalDomainID":1590,
"functionalDomainName":"Supporting Applications",
"functionalSubDomainID":1392,
"functionalSubDomainName":"Activity Monitoring and Business Rules"
}
]
}
我的所有警报都返回未定义。 请帮我解决。
【问题讨论】：
-
您的
success: function(data){...}应该已经返回了一个 JavaScript 对象，而您无需进行任何额外的处理 - 因此您应该能够删除所有这些replace()转换。然后，您可以像这样访问数据数组：var myArray = data.jsonArray2;，或者像这样：jsonObj["jsonArray2"]。然后你可以用普通的 JavaScript 方式遍历数组，以访问数组中每个对象的详细信息。 -
另外，您已将此问题标记为
java问题 - 这是不正确的。您应该改用javascript标签。 -
@andrewjames：它返回一个 JS 对象，我可以在 console.log 中打印 JSON 对象。
-
如果我使用这个 for(var i in newString){ console.log(newString [i]);}，我会逐字垂直打印所有值
-
我建议您编辑您的问题，显示您的（更新的）代码，并显示相关的输出。当我使用以下内容时：
console.log(myArray[2].functionalSubDomainName);，我得到一个包含“文档物流”的普通字符串 - 都在一行上。
标签： javascript json ajax jsp