使用GSON给出错误预期BEGIN_ARRAY但是STRING

示例JSON对象如下所示：

[{"Title":"John Doe","Address":{"AddressLines":["The Place","123 New Place","London","England"],"Postcode":"NW7 XXY"},"Telephone":"0012345","Email":"","Latitude":51.5024472101345,"Longitude":-0.557585646554,"Easting":500623,"Northing":179647}] 

假设通过链接www.domain.com访问上述对象，我有以下类来表示数据

 public class LocationData extends Data{ private Address Address; private String Telephone; private String Email; private String Latitude; private String Longitude; private String Easting; private String Northing; public Address getAddress() { return Address; } public void setAddress(Address address) { Address = address; } public String getTelephone() { return Telephone; } public void setTelephone(String telephone) { Telephone = telephone; } public String getEmail() { return Email; } public void setEmail(String email) { Email = email; } public String getLatitude() { return Latitude; } public void setLatitude(String latitude) { Latitude = latitude; } public String getLongitude() { return Longitude; } public void setLongitude(String longitude) { Longitude = longitude; } public String getEasting() { return Easting; } public void setEasting(String easting) { Easting = easting; } public String getNorthing() { return Northing; } public void setNorthing(String northing) { Northing = northing; } } 

地址类如下：

 public class Address { public String[] AddressLines; public String Postcode; public String getPostcode() { return Postcode; } public void setPostcode(String postcode) { Postcode = postcode; } public String[] getAddressLines() { return AddressLines; } public void setAddressLines(String addressLines[]) { AddressLines = addressLines; } } 

当我试图跑

 LocationData[] data = gson.fromJson(this.locationServiceUrl, LocationData[].class); return data; 

我收到以下错误：

预期BEGIN_ARRAY但是在上面提到的代码行中是字符串。 我不确定我设置课程的方式是否有问题。 注意：我正在使用数组（LocationData []数据），因为该服务返回多个位置，尽管我刚刚在上面显示的示例中包含了一个。 关于为什么会发生这种情况的任何帮助都非常感谢。 我在这里看了一些类似的错误，但没有提供的修复似乎对我有用。

Answer 1

 { "finally":[ { "Title":"John Doe", "Address": { "AddressLines":[ "The Place", "123 New Place", "London", "England" ], "Postcode":"NW7XXY" }, "Telephone":"0012345", "Email":"", "Latitude":51.5024472101345, "Longitude":-0.557585646554, "Easting":500623, "Northing":179647 } ] } 

和解析这个JSON的代码是：

 public class mainData { public List finally; public String[] getLocationData() { return AddressLines; } public void setLocationData(List finally) { this.finally = finally; } } 

这是因为你的字符串开头[当你用Gson解析这种类型的Json时，你需要为它添加一个标签，只是我喜欢（ {"finally": your data } ）。

实际上Gson试图映射标签及其值，但在你的情况下你的[不包含Gson可以映射的标签。