在Pojo上的物件內映射/訪問陣列

如何在 Pojo Spring Boot 上訪問和映射物件內的陣列？

這就是我想要映射的

{
    "customers": [
        {
            "customerId": "0434556574",
            "paymentCode": "90501"
        }
    ]
}

uj5u.com熱心網友回復：

您需要類以匹配 JSON 結構：

public class CustomersData {
    private List<Customer> customers;

    // Constructor, getter and setter
}

public class Customer {
    private String customerId;
    private String paymentCode;

    // Constructor, getter and setter
}

重要的是確保您的 JSON 屬性名稱與 Java 類中的屬性名稱匹配（從而避免它們之間的顯式映射）。

uj5u.com熱心網友回復：

嗨，有很多實用程式庫，您可以將 JSON 轉換為所需的 Java 類，以便您可以以正確的方式實體化。基于您輸入的示例：

------------------------------------- com.example.Customer.java-------- ---------------------------

package com.example;

import java.util.HashMap;
import java.util.Map;
import javax.annotation.Generated;
import com.fasterxml.jackson.annotation.JsonAnyGetter;
import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({
"customerId",
"paymentCode"
})
@Generated("jsonschema2pojo")
public class Customer {

@JsonProperty("customerId")
private String customerId;
@JsonProperty("paymentCode")
private String paymentCode;
@JsonIgnore
private Map<String, Object> additionalProperties = new HashMap<String, Object>();

@JsonProperty("customerId")
public String getCustomerId() {
return customerId;
}

@JsonProperty("customerId")
public void setCustomerId(String customerId) {
this.customerId = customerId;
}

@JsonProperty("paymentCode")
public String getPaymentCode() {
return paymentCode;
}

@JsonProperty("paymentCode")
public void setPaymentCode(String paymentCode) {
this.paymentCode = paymentCode;
}

@JsonAnyGetter
public Map<String, Object> getAdditionalProperties() {
return this.additionalProperties;
}

@JsonAnySetter
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}

}
-----------------------------------com.example.Example.java-----------------------------------

package com.example;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import javax.annotation.Generated;
import com.fasterxml.jackson.annotation.JsonAnyGetter;
import com.fasterxml.jackson.annotation.JsonAnySetter;
import com.fasterxml.jackson.annotation.JsonIgnore;
import com.fasterxml.jackson.annotation.JsonInclude;
import com.fasterxml.jackson.annotation.JsonProperty;
import com.fasterxml.jackson.annotation.JsonPropertyOrder;

@JsonInclude(JsonInclude.Include.NON_NULL)
@JsonPropertyOrder({
"customers"
})
@Generated("jsonschema2pojo")
public class Example {

@JsonProperty("customers")
private List<Customer> customers = null;
@JsonIgnore
private Map<String, Object> additionalProperties = new HashMap<String, Object>();

@JsonProperty("customers")
public List<Customer> getCustomers() {
return customers;
}

@JsonProperty("customers")
public void setCustomers(List<Customer> customers) {
this.customers = customers;
}

@JsonAnyGetter
public Map<String, Object> getAdditionalProperties() {
return this.additionalProperties;
}

@JsonAnySetter
public void setAdditionalProperty(String name, Object value) {
this.additionalProperties.put(name, value);
}

}

參考：jsontopojo

標籤：春天 弹簧靴 龙目岛 波乔

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