GSON：java.lang.IllegalStateException：预期为 BEGIN_OBJECT 但为 STRING
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GSON : java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING
提问by Lawrence
I am facing a problem about the GSON json to Java. I looked up many posts here, but I cannot find the solution for my question. So I list my problem here. Thanks very much !
我面临关于 GSON json 到 Java 的问题。我在这里查了很多帖子，但找不到我的问题的解决方案。所以我在这里列出我的问题。非常感谢 ！
Here is my Json Data
这是我的 Json 数据
"{
"data": {
"marks": "",
"spines": "",
"dendrites": {
"voxel": [
[383,382,382,381],
[49,50,51,52],
[7,10,10,10],
[0,0,0,0]
],
"maxint": [32,42,28,28],
"maxintcorrected": null,
"maxintcube": null,
"medianfiltered": [54.36979745,54.36979745,54.36979745,54.36979745],
"meanbacksingle": null,
"maxintsingle": null,
"thres": null,
"meanback": 42,
"index": 1,
"length": [0,0.3223757885,0.6336712814,0.9350672197,1.227262867],
"XYlength": [0,0.2085982964,0.410997367,0.6084466603]
}
}
}
"
My Class's defination is following
我的班级的定义如下
public class Test {
public data data;
public class data {
public Object marks;
public String spines = "";
public StandardSpinenalysisImage.data.dendrites[] dendrites;
public class dendrites {
public int voxel[][];
public int maxint[];
public String maxintcorrected = "";
public String maxintcube = "";
public int medianfiltered[];
public String meanbacksingle = "";
public String maxintsingle = "";
public int thres = 0;
public int meanback;
public int index = 0;
public int length[];
public int XYlength[];
public dendrites() {
this.thres = 100;
}
}
}
}
But when I use the code Test t = g.fromJson(input, Test.class);
但是当我使用代码 Test t = g.fromJson(input, Test.class);
I got the error result.
我得到了错误结果。
Exception in thread "AWT-EventQueue-0" com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 5
Thank you very very MUCH!!
非常非常感谢你！！
回答by austin
回答by kushpf
Faced the same error today. In mine, the problem was one variable in JSON mapped to a String, but in the class the variable was on object of a Class Type. This made Gson think that the JSON variable should be of the Class Type, causing IllegalStateException with Expected BEGIN_OBJECT but was STRING
今天遇到同样的错误。在我的问题中，问题是 JSON 中的一个变量映射到一个字符串，但在类中，该变量位于类类型的对象上。这让 Gson 认为 JSON 变量应该是 Class Type，导致 IllegalStateExceptionExpected BEGIN_OBJECT but was STRING
Hope it helps someone.
希望它可以帮助某人。
