试图将JsonString映射到ArrayList [无法从START_OBJECT令牌中反序列化java.util.ArrayList的实例]]

Question

我有以下Json字符串

[{"tipError":"1","desError":"Existen diferencias en los montos de Solicitudes vs Operaciones Solicitadas"},{"tipError":"5","desError":"Las Ventas Totales deben ser mayor"}]
[当我收到该JSON时，我正在尝试将其映射到对象的ArrayList。我尝试了here中的三个选项以及stack overflow]中的其他一些示例
这是我目前拥有的

String errors = "[{\"tipError\":\"1\",\"desError\":\"Existen diferencias en los montos de Solicitudes vs Operaciones Solicitadas\"},{\"tipError\":\"5\",\"desError\":\"Las Ventas Totales deben ser mayor\"}]";    
List<ProcedureErrorDTO> error = mapper.readValue(errors, new TypeReference<List<ProcedureErrorDTO>>() {});
我的ProcedureErrorDTO类
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({
"tipError",
"desError"
})
public class ProcedureErrorDTO {
@JsonProperty("tipError")
private String errorNumber;

@JsonProperty("desError")
private String errorDescription;

public ProcedureErrorDTO() {}

public ProcedureErrorDTO(String errorNumber, String errorDescription) {
    super();
    this.errorNumber = errorNumber;
    this.errorDescription = errorDescription;
}
@JsonProperty("tipError")
public String getErrorNumber() {
    return errorNumber;
}
@JsonProperty("tipError")
public void setErrorNumber(String errorNumber) {
    this.errorNumber = errorNumber;
}
@JsonProperty("desError")
public String getErrorDescription() {
    return errorDescription;
}
@JsonProperty("desError")
public void setError(String errorDescription) {
    this.errorDescription = errorDescription;
    }   
}
我的错误
    com.fasterxml.jackson.databind.JsonMappingException: Can not deserialize instance of java.util.ArrayList out of START_OBJECT token
 at [Source: {"tipError":"1","desError":"Existen diferencias en los montos de Solicitudes de BBVA en Pasivos vs Operaciones Solicitadas"}; line: 1, column: 1]
我有以下Json字符串[{“ tipError”：“ 1”，“ desError”：“在存在与否之间存在差异，}，{” tipError“：” 5“，” desError“：” Las Ventas Totales deben ser ...

Answer 1

下面的代码工作正常。我什么都没改变。我只将所有内容放在一个java文件下，以便我可以运行它。您是否使用任何特定的映射器配置？

import java.io.IOException;
import java.util.List;

import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;
import com.fasterxml.jackson.core.JsonParseException;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.JsonMappingException;
import com.fasterxml.jackson.databind.ObjectMapper;



public class App {
    public static void main(String[] argv) throws JsonParseException, JsonMappingException, IOException {
        String errors = "[{\"tipError\":\"1\",\"desError\":\"Existen diferencias en los montos de Solicitudes vs Operaciones Solicitadas\"},{\"tipError\":\"5\",\"desError\":\"Las Ventas Totales deben ser mayor\"}]";    
        ObjectMapper mapper = new ObjectMapper();
        List<ProcedureErrorDTO> error = mapper.readValue(errors, new TypeReference<List<ProcedureErrorDTO>>() {});
        System.out.println(error.size());
    }

}



@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({
"tipError",
"desError"
})
class ProcedureErrorDTO {
@JsonProperty("tipError")
private String errorNumber;

@JsonProperty("desError")
private String errorDescription;

public ProcedureErrorDTO() {}

public ProcedureErrorDTO(String errorNumber, String errorDescription) {
    super();
    this.errorNumber = errorNumber;
    this.errorDescription = errorDescription;
}
@JsonProperty("tipError")
public String getErrorNumber() {
    return errorNumber;
}
@JsonProperty("tipError")
public void setErrorNumber(String errorNumber) {
    this.errorNumber = errorNumber;
}
@JsonProperty("desError")
public String getErrorDescription() {
    return errorDescription;
}
@JsonProperty("desError")
public void setError(String errorDescription) {
    this.errorDescription = errorDescription;
    }   
}