我有方法返回的JSON字符串：
public List<Issues> Getdata(
string jql,
List<string> fields = null,
int startAt = 0,
int maxResult = 500)
{
string data = JsonConvert.SerializeObject(request);
string result = runQuery(JiraResource.search, data, "POST"); //returns results and working fine
SearchResponse response = JsonConvert.DeserializeObject<SearchResponse>(result);
return response.IssueDescriptions = GetIssues(response);;
}
和JSON字符串如下所示：
{"expand":"schema,names","startAt":0,"maxResults":50,"total":139,"issues":[{"expand":"operations,versionedRepresentations,editmeta,changelog,transitions,renderedFields","id":"20930","self":"https://clientname.atlassian.net/rest/api/2/issue/20930","key":"-139","fields":{"summary":"Rebate","issuetype":{"self":"https://clientname.atlassian.net/rest/api/2/issuetype/1","id":"1","description":"A fee negotiation or quote","iconUrl":"https://clientname.atlassian.net/images/icons/issuetypes/sales.png","name":"Fees","subtask":false},"components":[],"created":"2015-07-10T12:29:05.000+1000","description":"Execute as per attached instruction","project":{"self":"https://clientname.atlassian.net/rest/api/2/project/10013","id":"10013","key":"--","name":"Change Instructions","avatarUrls":{"48x48":"https://clientname.atlassian.net/secure/projectavatar?avatarId=10011","24x24":"https://clientname.atlassian.net/secure/projectavatar?size=small&avatarId=10011","16x16":"https://clientname.atlassian.net/secure/projectavatar?size=xsmall&avatarId=10011","32x32":"https://clientname.atlassian.net/secure/projectavatar?size=medium&avatarId=10011"}},"reporter":{"self":"https://clientname.atlassian.net/rest/api/2/user?username=rajap","name":"rajap","key":"rajap","emailAddress":"email.au","avatarUrls":{"48x48":"https://clientname.atlassian.net/secure/useravatar?avatarId=10142","24x24":"https://clientname.atlassian.net/secure/useravatar?size=small&avatarId=10142","16x16":"https://clientname.atlassian.net/secure/useravatar?size=xsmall&avatarId=10142","32x32":"https://clientname.atlassian.net/secure/useravatar?size=medium&avatarId=10142"},"displayName":"Prabu","active":true,"timeZone":"US"},"priority":{"self":"https://clientname.atlassian.net/rest/api/2/priority/3","iconUrl":"https://clientname.atlassian.net/images/icons/priorities/major.png","name":"Medium","id":"3"},"resolution":null,"duedate":"2015-07-15","comment":{"startAt":0,"maxResults":1,"total":1,"comments":[{"self":"https://clientname.atlassian.net/rest/api/2/issue/20930/comment/24290","id":"24290","author":{"self":"https://clientname.atlassian.net/rest/api/2/user?username=acahill","name":"acahill","key":"acahill","emailAddress":"email","avatarUrls":{"48x48":"https://clientname.atlassian.net/secure/useravatar?avatarId=10142","24x24":"https://clientname.atlassian.net/secure/useravatar?size=small&avatarId=10142","16x16":"https://clientname.atlassian.net/secure/useravatar?size=xsmall&avatarId=10142","32x32":"https://clientname.atlassian.net/secure/useravatar?size=medium&avatarId=10142"},"displayName":"Andrew Cahill","active":true,"timeZone":"US"},"body":"John, please action","updateAuthor":{"self":"https://clientname.atlassian.net/rest/api/2/user?username=acahill","name":"acahill","key":"acahill","emailAddress":"email","avatarUrls":{"48x48":"https://clientname.atlassian.net/secure/useravatar?avatarId=10142","24x24":"https://clientname.atlassian.net/secure/useravatar?size=small&avatarId=10142","16x16":"https://clientname.atlassian.net/secure/useravatar?size=xsmall&avatarId=10142","32x32":"https://clientname.atlassian.net/secure/useravatar?size=medium&avatarId=10142"},"displayName":"Andrew","active":true,"timeZone":"US"},"created":"2015-07-10T12:35:43.728+1000","updated":"2015-07-10T12:35:43.728+1000"}]},"votes":{"self":"https://clientname.atlassian.net/rest/api/2/issue/-139/votes","votes":0,"hasVoted":false},"assignee":{"self":"https://clientname.atlassian.net/rest/api/2/user?username=olearyj","name":"olearyj","key":"olearyj","emailAddress":"email","avatarUrls":{"48x48":"https://clientname.atlassian.net/secure/useravatar?avatarId=10142","24x24":"https://clientname.atlassian.net/secure/useravatar?size=small&avatarId=10142","16x16":"https://clientname.atlassian.net/secure/useravatar?size=xsmall&avatarId=10142","32x32":"https://clientname.atlassian.net/secure/useravatar?size=medium&avatarId=10142"},"displayName":"John","active":true,"timeZone":"US"},"status":{"self":"https://clientname.atlassian.net/rest/api/2/status/1","description":"The issue is open and ready for the assignee to start work on it.","iconUrl":"https://clientname.atlassian.net/images/icons/statuses/open.png","name":"Open","id":"1","statusCategory":{"self":"https://clientname.atlassian.net/rest/api/2/statuscategory/2","id":2,"key":"new","colorName":"blue-gray","name":"To Do"}}}}]}
我想让上面的json字符串的解析器方法获取这些字段值的特定值，如：
“摘要”，“状态”，“受让人”， “评论”，“描述”，“创造”，“强制”，“环境”，“优先”，“项目”， “记者”，“决议”，“发行类型”，“更新”，“投票”，“组成部分”
我试图逐一获取。但是，它的复杂性和时间。
这就是我的尝试方式。但错误：对象引用未设置为对象的实例。
private List<JiraIssues> GetIssues(SearchResponse response)
{
List<JiraIssues> returnResulttoReport = new List<JiraIssues>();
foreach (var item in response.IssueDescriptions) //error here (not sure why IssueDescriptions is NULL but before call i'm de-serializing it)
{
foreach (var item1 in item.Comments)
{
}
}
return returnResulttoReport;
}
我的回复类型为List<Issuees>。是否有任何库或示例链接可以执行此操作？
请注意，我已经对它进行了反序列化，现在我想从那里得到特定的列表。另外，请注意我给出的JSON完整字符串与我的实际字符串不同。但它的相似之处。请指导。
答案 0 :(得分：2)
使用json2csharp之类的东西为json生成C＃类，以防止出错。然后做一些像
这样的事情var result = JsonConvert.DeserializeObject<RootObject>(myJsonString);
修改
以下是如何获取摘要的示例：
RootObject result = JsonConvert.DeserializeObject<RootObject>(json);
List<string> summaries = new List<string>();
foreach (var item in result.issues)
{
var summary = item.fields.summary;
Console.WriteLine(summary);
summaries.Add(summary);
}
RootObject将代表JSON的顶级对象，然后它将具有与JSON的每个属性相对应的属性。
答案 1 :(得分：0)
public class Issuetype
{
public string self { get; set; }
public string id { get; set; }
public string description { get; set; }
public string iconUrl { get; set; }
public string name { get; set; }
public bool subtask { get; set; }
}
public class AvatarUrls
{
public string __invalid_name__48x48 { get; set; }
public string __invalid_name__24x24 { get; set; }
public string __invalid_name__16x16 { get; set; }
public string __invalid_name__32x32 { get; set; }
}
public class Project
{
public string self { get; set; }
public string id { get; set; }
public string key { get; set; }
public string name { get; set; }
public AvatarUrls avatarUrls { get; set; }
}
public class AvatarUrls2
{
public string __invalid_name__48x48 { get; set; }
public string __invalid_name__24x24 { get; set; }
public string __invalid_name__16x16 { get; set; }
public string __invalid_name__32x32 { get; set; }
}
public class Reporter
{
public string self { get; set; }
public string name { get; set; }
public string key { get; set; }
public string emailAddress { get; set; }
public AvatarUrls2 avatarUrls { get; set; }
public string displayName { get; set; }
public bool active { get; set; }
public string timeZone { get; set; }
}
public class Priority
{
public string self { get; set; }
public string iconUrl { get; set; }
public string name { get; set; }
public string id { get; set; }
}
public class AvatarUrls3
{
public string __invalid_name__48x48 { get; set; }
public string __invalid_name__24x24 { get; set; }
public string __invalid_name__16x16 { get; set; }
public string __invalid_name__32x32 { get; set; }
}
public class Author
{
public string self { get; set; }
public string name { get; set; }
public string key { get; set; }
public string emailAddress { get; set; }
public AvatarUrls3 avatarUrls { get; set; }
public string displayName { get; set; }
public bool active { get; set; }
public string timeZone { get; set; }
}
public class AvatarUrls4
{
public string __invalid_name__48x48 { get; set; }
public string __invalid_name__24x24 { get; set; }
public string __invalid_name__16x16 { get; set; }
public string __invalid_name__32x32 { get; set; }
}
public class UpdateAuthor
{
public string self { get; set; }
public string name { get; set; }
public string key { get; set; }
public string emailAddress { get; set; }
public AvatarUrls4 avatarUrls { get; set; }
public string displayName { get; set; }
public bool active { get; set; }
public string timeZone { get; set; }
}
public class Comment2
{
public string self { get; set; }
public string id { get; set; }
public Author author { get; set; }
public string body { get; set; }
public UpdateAuthor updateAuthor { get; set; }
public string created { get; set; }
public string updated { get; set; }
}
public class Comment
{
public int startAt { get; set; }
public int maxResults { get; set; }
public int total { get; set; }
public List<Comment2> comments { get; set; }
}
public class Votes
{
public string self { get; set; }
public int votes { get; set; }
public bool hasVoted { get; set; }
}
public class AvatarUrls5
{
public string __invalid_name__48x48 { get; set; }
public string __invalid_name__24x24 { get; set; }
public string __invalid_name__16x16 { get; set; }
public string __invalid_name__32x32 { get; set; }
}
public class Assignee
{
public string self { get; set; }
public string name { get; set; }
public string key { get; set; }
public string emailAddress { get; set; }
public AvatarUrls5 avatarUrls { get; set; }
public string displayName { get; set; }
public bool active { get; set; }
public string timeZone { get; set; }
}
public class StatusCategory
{
public string self { get; set; }
public int id { get; set; }
public string key { get; set; }
public string colorName { get; set; }
public string name { get; set; }
}
public class Status
{
public string self { get; set; }
public string description { get; set; }
public string iconUrl { get; set; }
public string name { get; set; }
public string id { get; set; }
public StatusCategory statusCategory { get; set; }
}
public class Fields
{
public string summary { get; set; }
public Issuetype issuetype { get; set; }
public List<object> components { get; set; }
public string created { get; set; }
public string description { get; set; }
public Project project { get; set; }
public Reporter reporter { get; set; }
public Priority priority { get; set; }
public object resolution { get; set; }
public string duedate { get; set; }
public Comment comment { get; set; }
public Votes votes { get; set; }
public Assignee assignee { get; set; }
public Status status { get; set; }
}
public class Issue
{
public string expand { get; set; }
public string id { get; set; }
public string self { get; set; }
public string key { get; set; }
public Fields fields { get; set; }
}
public class RootObject
{
public string expand { get; set; }
public int startAt { get; set; }
public int maxResults { get; set; }
public int total { get; set; }
public List<Issue> issues { get; set; }
}
var t = JsonConvert.DeserializeObject<RootObject>(json);
var issues = t.issues;