尝试创建Java对象并将其存储在NOsql对象（NO2又称亚硝酸盐）数据库。
在尝试将对象存储在对象存储库中时，会引发com.fasterxml.jackson.databind.exc.InvalidDefinitionException异常。
我试图在fo.java模块文件中导出bank.java类；我试图在bank.java类中添加一个默认构造函数。两者都没有解决问题。
感谢您帮助解决此错误。
完整错误显示如下：
Caused by: com.fasterxml.jackson.databind.exc.InvalidDefinitionException: Invalid type definition for type `com.app.bankapplet.bank.Bank`: Failed to construct BeanSerializer for [simple type, class com.app.bankapplet.bank.Bank]: (java.lang.IllegalArgumentException) Failed to call `setAccess()` on Field id (of class `com.app.bankapplet.bank.Bank`) due to `java.lang.reflect.InaccessibleObjectException`, problem: Unable to make field private int com.app.bankapplet.bank.Bank.id accessible: module com.app.bankapplet does not "opens com.app.bankapplet.bank" to unnamed module @6293abcc
at com.fasterxml.jackson.databind.exc.InvalidDefinitionException.from(InvalidDefinitionException.java:72)
at com.fasterxml.jackson.databind.SerializerProvider.reportBadTypeDefinition(SerializerProvider.java:1280)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.constructBeanOrAddOnSerializer(BeanSerializerFactory.java:475)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.findBeanOrAddOnSerializer(BeanSerializerFactory.java:295)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory._createSerializer2(BeanSerializerFactory.java:240)
at com.fasterxml.jackson.databind.ser.BeanSerializerFactory.createSerializer(BeanSerializerFactory.java:174)
at com.fasterxml.jackson.databind.SerializerProvider._createUntypedSerializer(SerializerProvider.java:1503)
at com.fasterxml.jackson.databind.SerializerProvider._createAndCacheUntypedSerializer(SerializerProvider.java:1451)
at com.fasterxml.jackson.databind.SerializerProvider.findValueSerializer(SerializerProvider.java:556)
at com.fasterxml.jackson.databind.SerializerProvider.findTypedValueSerializer(SerializerProvider.java:834)
at com.fasterxml.jackson.databind.ser.DefaultSerializerProvider.serializeValue(DefaultSerializerProvider.java:307)
at com.fasterxml.jackson.databind.ObjectMapper._convert(ObjectMapper.java:4522)
... 18 more
Exception running application com.app.bankapplet.Main
我所期望的是对象存储在对象存储库中。
请在下面找到我的代码：
主类
package com.app.bankapplet;
import com.app.bankapplet.bank.Bank;
import javafx.application.Application;
import javafx.application.Platform;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.control.*;
import javafx.scene.layout.GridPane;
import javafx.stage.Stage;
import javafx.util.Callback;
import org.dizitart.no2.Nitrite;
import org.dizitart.no2.NitriteCollection;
import org.dizitart.no2.objects.ObjectRepository;
import java.io.File;
import java.io.IOException;
import java.util.Optional;
public class Main extends Application {
private static Nitrite db;
private static Bank bank;
@Override
public void start(Stage stage) throws IOException {
// Generates a bank
bank = getBank();
ObjectRepository<Bank> bankObjectStore = db.getRepository(Bank.class);
bankObjectStore.insert(bank);
FXMLLoader fxmlLoader = new FXMLLoader(Main.class.getResource("main.fxml"));
Scene scene = new Scene(fxmlLoader.load(), 800, 600);
stage.setTitle("Bank Manager");
stage.setScene(scene);
stage.show();
}
public static void main(String[] args) {
db = Nitrite.builder()
.filePath(new File("target/appdb.db"))
.compressed()
.openOrCreate();
launch();
}
protected static Bank getBank() {
Dialog<Bank> dialog = new Dialog<>();
dialog.setTitle("New Bank");
dialog.setHeaderText("Enter the name of the bank:");
Label label = new Label("Bank Name: ");
TextField text = new TextField();
GridPane gridPane = new GridPane();
gridPane.add(label, 1, 1);
gridPane.add(text, 2, 1);
dialog.getDialogPane().setContent(gridPane);
ButtonType buttonTypeOK = new ButtonType("OK", ButtonBar.ButtonData.OK_DONE);
dialog.getDialogPane().getButtonTypes().add(buttonTypeOK);
dialog.setResultConverter(new Callback<ButtonType, Bank>() {
@Override
public Bank call(ButtonType b) {
if(b == buttonTypeOK) {
return new Bank(text.getText());
}
return null;
}
});
Optional<Bank> result = dialog.showAndWait();
if(result.isPresent()) {
return result.get();
}
return null;
}
}
银行.java
package com.app.bankapplet.bank;
import org.dizitart.no2.objects.Id;
public class Bank {
@Id
private int id;
private String name;
public Bank() {
}
public Bank(String name) {
this.id = 0;
this.name = name;
}
public int getId() {
return id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
private static String toTitleCase(String item) {
if (item == null || item.isEmpty()) {
return item;
}
StringBuilder convertedString = new StringBuilder();
boolean convertNext = true;
for (char ch : item.toCharArray()) {
if (Character.isSpaceChar(ch)) {
convertNext = true;
} else if (convertNext) {
ch = Character.toTitleCase(ch);
convertNext = false;
} else {
ch = Character.toLowerCase(ch);
}
convertedString.append(ch);
}
return convertedString.toString();
}
}
fo.java模块
module com.app.bankapplet {
requires javafx.controls;
requires javafx.fxml;
requires nitrite;
opens com.app.bankapplet to javafx.fxml;
exports com.app.bankapplet.bank;
exports com.app.bankapplet;
}
pom.xml文件
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.app</groupId>
<artifactId>BankApplet</artifactId>
<version>1.0-SNAPSHOT</version>
<name>BankApplet</name>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<junit.version>5.9.2</junit.version>
</properties>
<dependencies>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-controls</artifactId>
<version>20</version>
</dependency>
<dependency>
<groupId>org.openjfx</groupId>
<artifactId>javafx-fxml</artifactId>
<version>20</version>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-engine</artifactId>
<version>${junit.version}</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.15.1</version>
</dependency>
<dependency>
<groupId>org.dizitart</groupId>
<artifactId>nitrite</artifactId>
<version>3.4.4</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.11.0</version>
<configuration>
<source>20</source>
<target>20</target>
</configuration>
</plugin>
<plugin>
<groupId>org.openjfx</groupId>
<artifactId>javafx-maven-plugin</artifactId>
<version>0.0.8</version>
<executions>
<execution>
<!-- Default configuration for running with: mvn clean javafx:run -->
<id>default-cli</id>
<configuration>
<mainClass>com.app.bankapplet/com.app.bankapplet.Main</mainClass>
<launcher>app</launcher>
<jlinkZipName>app</jlinkZipName>
<jlinkImageName>app</jlinkImageName>
<noManPages>true</noManPages>
<stripDebug>true</stripDebug>
<noHeaderFiles>true</noHeaderFiles>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</project>