将非Json字符串解析为POJO

Question

我必须从一系列原始日志中提取细节，并将其转换为POJO。由于它们是日志，所以实际上并不是JSON格式。

例如。

{
CONTAINER_ID = some_value,
TRACKING_ID = value,
PHYSICAL_ATTRIBUTES = PhysicalAttributes(length = Dimension(value = 30.0, unit = CM, type = null), width = Dimension(value = 30.0, unit = CM, type = null), height = Dimension(value = 30.0, unit = CM, type = null), scaleWeight = Weight(value = 5.0, unit = kg, type = null)),
SHIP_METHOD = some_value,
ADDRESS_ID = some_value,
CUSTOMER_ID = some_value,
REQUEST_STATE = UNKNOWN,
REQUEST_STATE_REASON = UNKNOWN,
RESPONSE = GetAccessPointsForHubDeliveryOutput(destinationLocation = null, fallBackLocation = null, capability = null),
IS_COMMERCIAL_ATTRIBUTE_PRESENT = false
}

有没有办法将这个字符串转换成POJO？(必填对象为大写(

Answer 1

是否有将此字符串转换为POJO的方法？

是的，您可以编写一个解析器来读取数据并将其存储到适当的对象中。一种方法是将数据转换为JSON格式，并利用现有的JSON解析将生成的JSON转换为POJO。

下面是一个基于您的数据的POJO类示例。注意，我将您的数据简单地转换为JSON，并通过在线代码生成工具运行该转换，因此该类不遵循Java代码约定。

public class PojoClass {
private String CONTAINER_ID;
private String TRACKING_ID;
private String PHYSICAL_ATTRIBUTES;
private String SHIP_METHOD;
private String ADDRESS_ID;
private String CUSTOMER_ID;
private String REQUEST_STATE;
private String REQUEST_STATE_REASON;
private String RESPONSE;
private String IS_COMMERCIAL_ATTRIBUTE_PRESENT;
public void setCONTAINER_ID(String CONTAINER_ID) {
this.CONTAINER_ID = CONTAINER_ID;
}
public String getCONTAINER_ID() {
return this.CONTAINER_ID;
}
public void setTRACKING_ID(String TRACKING_ID) {
this.TRACKING_ID = TRACKING_ID;
}
public String getTRACKING_ID() {
return this.TRACKING_ID;
}
public void setPHYSICAL_ATTRIBUTES(String PHYSICAL_ATTRIBUTES) {
this.PHYSICAL_ATTRIBUTES = PHYSICAL_ATTRIBUTES;
}
public String getPHYSICAL_ATTRIBUTES() {
return this.PHYSICAL_ATTRIBUTES;
}
public void setSHIP_METHOD(String SHIP_METHOD) {
this.SHIP_METHOD = SHIP_METHOD;
}
public String getSHIP_METHOD() {
return this.SHIP_METHOD;
}
public void setADDRESS_ID(String ADDRESS_ID) {
this.ADDRESS_ID = ADDRESS_ID;
}
public String getADDRESS_ID() {
return this.ADDRESS_ID;
}
public void setCUSTOMER_ID(String CUSTOMER_ID) {
this.CUSTOMER_ID = CUSTOMER_ID;
}
public String getCUSTOMER_ID() {
return this.CUSTOMER_ID;
}
public void setREQUEST_STATE(String REQUEST_STATE) {
this.REQUEST_STATE = REQUEST_STATE;
}
public String getREQUEST_STATE() {
return this.REQUEST_STATE;
}
public void setREQUEST_STATE_REASON(String REQUEST_STATE_REASON) {
this.REQUEST_STATE_REASON = REQUEST_STATE_REASON;
}
public String getREQUEST_STATE_REASON() {
return this.REQUEST_STATE_REASON;
}
public void setRESPONSE(String RESPONSE) {
this.RESPONSE = RESPONSE;
}
public String getRESPONSE() {
return this.RESPONSE;
}
public void setIS_COMMERCIAL_ATTRIBUTE_PRESENT(String IS_COMMERCIAL_ATTRIBUTE_PRESENT) {
this.IS_COMMERCIAL_ATTRIBUTE_PRESENT = IS_COMMERCIAL_ATTRIBUTE_PRESENT;
}
public String getIS_COMMERCIAL_ATTRIBUTE_PRESENT() {
return this.IS_COMMERCIAL_ATTRIBUTE_PRESENT;
}
@Override
public String toString() {
return "PojoClass [CONTAINER_ID=" + CONTAINER_ID + ", TRACKING_ID=" + TRACKING_ID + ", PHYSICAL_ATTRIBUTES="
+ PHYSICAL_ATTRIBUTES + ", SHIP_METHOD=" + SHIP_METHOD + ", ADDRESS_ID=" + ADDRESS_ID + ", CUSTOMER_ID="
+ CUSTOMER_ID + ", REQUEST_STATE=" + REQUEST_STATE + ", REQUEST_STATE_REASON=" + REQUEST_STATE_REASON
+ ", RESPONSE=" + RESPONSE + ", IS_COMMERCIAL_ATTRIBUTE_PRESENT=" + IS_COMMERCIAL_ATTRIBUTE_PRESENT
+ "]";
}
}

我将您的示例数据存储在一个简单的文本文件中，然后编写以下代码来读取并转换为JSON，然后使用Gson将其转换为POJO:

import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.List;
import com.google.gson.Gson;
public class GsonMain {
public static void main(String[] args) throws IOException {
Gson gson = new Gson();
List<String> lines = Files.readAllLines(Paths.get("src/test/resources/input.txt"));
StringBuilder builder = new StringBuilder();
for(String line: lines){
line = line.trim();
if("{".equals(line) || 
"}".equals(line)){
builder.append(line);
continue;
}
line = line.replaceFirst(" = ", "" : "");
line = line.replaceAll("^", """);
line = line.replaceAll(",$", "",");
if(!line.endsWith(",")){
line = line + """;
}
builder.append(line);
}
System.out.println("JSON --> " + builder.toString());
PojoClass pojo = gson.fromJson(builder.toString(), PojoClass.class);
System.out.println("POJO --> " + pojo);
}
}

以下是示例输出：

JSON --> {"CONTAINER_ID" : "some_value","TRACKING_ID" : "value","PHYSICAL_ATTRIBUTES" : "PhysicalAttributes(length = Dimension(value = 30.0, unit = CM, type = null), width = Dimension(value = 30.0, unit = CM, type = null), height = Dimension(value = 30.0, unit = CM, type = null), scaleWeight = Weight(value = 5.0, unit = kg, type = null))","SHIP_METHOD" : "some_value","ADDRESS_ID" : "some_value","CUSTOMER_ID" : "some_value","REQUEST_STATE" : "UNKNOWN","REQUEST_STATE_REASON" : "UNKNOWN","RESPONSE" : "GetAccessPointsForHubDeliveryOutput(destinationLocation = null, fallBackLocation = null, capability = null)","IS_COMMERCIAL_ATTRIBUTE_PRESENT" : "false"}
POJO --> PojoClass [CONTAINER_ID=some_value, TRACKING_ID=value, PHYSICAL_ATTRIBUTES=PhysicalAttributes(length = Dimension(value = 30.0, unit = CM, type = null), width = Dimension(value = 30.0, unit = CM, type = null), height = Dimension(value = 30.0, unit = CM, type = null), scaleWeight = Weight(value = 5.0, unit = kg, type = null)), SHIP_METHOD=some_value, ADDRESS_ID=some_value, CUSTOMER_ID=some_value, REQUEST_STATE=UNKNOWN, REQUEST_STATE_REASON=UNKNOWN, RESPONSE=GetAccessPointsForHubDeliveryOutput(destinationLocation = null, fallBackLocation = null, capability = null), IS_COMMERCIAL_ATTRIBUTE_PRESENT=false]