检测在C#两个JSON文件之间的差异 [英] Detect differences between two json files in c#
问题描述
例如,如果我有以下的JSON文本:
object1 {
字段1:值1;
场2:值2;
场3:值3;
}
object1 {
字段1:值1;
场2:newvalue2;
场3:值3;
}
我需要在C#中的东西,读取该文件并显示差异。也就是说,它可以返回以下对象:
差异{
object1:{场:场,OLD_VALUE:值2,NEW_VALUE :newvalue2}
}
有一些API或建议这样做。
我建议你使用的弱类型的JSON序列化并编写使用常规的的JSONObject 是这样的:
字符串JsonDifferenceReport(字符串对象名,
的JSONObject第一,
的JSONObject秒)
{
如果(String.IsNullOrEmpty(对象名))
抛出新ArgumentNullException (对象名);
如果(空==第一)
抛出新的ArgumentNullException(第一);
如果(空==秒)
抛出新的ArgumentNullException(第二);
名单,LT;弦乐> allKeys =新的List<串GT;();
的foreach(在first.Keys字符串键)
如果(allKeys.Any(X =>!X.Equals(键)))allKeys.Add(密钥);
的foreach(在second.Keys字符串键)
如果(allKeys.Any(X =>!X.Equals(键)))allKeys.Add(密钥);
字符串结果=的String.Empty;
的foreach(在allKeys字符串键)
{
JsonValue V1 =第[关键]
JsonValue V1 =秒[关键]
如果(((空== V1)!=(空== V2))||!v1.Equals(V2))
{
如果(String.IsNullOrEmpty(结果))
{
结果=的区别:{\\\
}
结果+ =\t+ +的objectName:{\\\
+ =\t\tfield:
+业绩键+,\\\
结果+ =\t\toldvalue:+(空== V1)? 空:v1.ToString()+,\\\
;
结果+ =\t\tnewvalue:+(空== V2)? 空:v2.ToString()+\\\
;
结果+ =\t} \\\
}
}
如果
{
结果+ =} \\\
(String.IsNullOrEmpty(结果)!);
}
返回结果;
}
您选择是否得到报告递归里面 JsonValue
v1和v2,而不是仅仅使用他们的字符串表示我在这里做的。
如果你想去递归的,它可能会改变上述像这样的:
IF((空== V1)||(v1.JsonType == JsonType.JsonPrimitive)
||(空== V2)||(v2.JsonType == JsonType.JsonPrimitive))
{
结果+ =\t\tfield:+按键+,\\\
结果+ =\t\toldvalue:+(空== V1)? 空:v1.ToString()+,\\\
;
结果+ =\t\tnewvalue:+(空== V2)? 空:v2.ToString()+\\\
;
}
,否则
{
+结果JsonDifferenceReport(键,V1,V2);
}
-Jesse
For example, if I have the following json texts:
object1{
field1: value1;
field2: value2;
field3: value3;
}
object1{
field1: value1;
field2: newvalue2;
field3: value3;
}
I need something in c# that reads that files and shows the difference. i.e. it can return the following object:
differences {
object1: { field: field2, old_value: value2, new_value: newvalue2}
}
Is there some API or suggestions to do this?
I recommend you use Weakly-Typed JSON Serialization and write a routine that uses JsonObject like this:
String JsonDifferenceReport(String objectName,
JsonObject first,
JsonObject second)
{
if(String.IsNullOrEmpty(objectName))
throw new ArgumentNullException("objectName");
if(null==first)
throw new ArgumentNullException("first");
if(null==second)
throw new ArgumentNullException("second");
List<String> allKeys = new List<String>();
foreach(String key in first.Keys)
if (!allKeys.Any(X => X.Equals(key))) allKeys.Add(key);
foreach(String key in second.Keys)
if (!allKeys.Any(X => X.Equals(key))) allKeys.Add(key);
String results = String.Empty;
foreach(String key in allKeys)
{
JsonValue v1 = first[key];
JsonValue v1 = second[key];
if (((null==v1) != (null==v2)) || !v1.Equals(v2))
{
if(String.IsNullOrEmpty(results))
{
results = "differences: {\n";
}
results += "\t" + objectName + ": {\n";
results += "\t\tfield: " + key + ",\n";
results += "\t\toldvalue: " + (null==v1)? "null" : v1.ToString() + ",\n";
results += "\t\tnewvalue: " + (null==v2)? "null" : v2.ToString() + "\n";
results += "\t}\n";
}
}
if(!String.IsNullOrEmpty(results))
{
results += "}\n";
}
return results;
}
Your choice whether to get reports recursively inside JsonValue
v1 and v2, instead of just using their string representation as I did here.
If you wanted to go recursive, it might change the above like this:
if ((null==v1) || (v1.JsonType == JsonType.JsonPrimitive)
|| (null==v2) || (v2.JsonType == JsonType.JsonPrimitive))
{
results += "\t\tfield: " + key + ",\n";
results += "\t\toldvalue: " + (null==v1) ? "null" : v1.ToString() + ",\n";
results += "\t\tnewvalue: " + (null==v2) ? "null" : v2.ToString() + "\n";
}
else
{
results + JsonDifferenceReport(key, v1, v2);
}
-Jesse
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