英文:
How to access getter method in calling Java class or Java interface using lombok?
问题
使用JDK 1.8和以下lombok版本：
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
具有以下Java接口：
package com.myapp.bridge;
public interface MyBridge {
public void run();
}
实现类：
package com.myapp.bridge;
import lombok.Getter;
import lombok.Setter;
public class MyBridgeHandler implements MyBridge {
@Getter(AccessLevel.PACKAGE)
@Setter(AccessLevel.PACKAGE)
public String value;
public void run() {
String msg = "hello";
setValue(msg);
// This works and prints hello ten times.
for (int i = 0; i < 10; i++) {
System.out.println(getValue());
}
}
}
调用类：
package com.myapp.bridge;
import lombok.Getter;
public class App {
@Getter
private MyBridge bridge = new MyBridgeHandler();
public void printValue() {
// IntelliJ IDEA不似乎允许我访问这个getter？
String aValue = getBridge().getValue();
System.out.println(aValue);
}
public static void main(String args []) {
App app = new App();
app.printValue();
}
}
问题：
-
我如何在调用类中获取/访问
MyBridgetHandler.getValue()方法（在我在printValue方法中在getBridge().后面加上点之后，IntelliJ IDEA甚至不会显示或选择此方法）？ -
它应该放在
MyBridge接口中吗？如果是这样，实现会是什么样子？
请注意，这不是一个特定于IntelliJ的问题，因为我的其他POJO使用了基于lombok的@Getter和@Setter注释，并且可以通过IntelliJ IDEA在调用类中工作。
可以看到hello被打印到stdout 10次，所以它是被设置了的。
似乎是一个可见性/访问权限问题。
英文:
Using JDK 1.8 and the following lombok version:
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<version>1.18.12</version>
<scope>provided</scope>
</dependency>
Have the following Java interface:
package com.myapp.bridge;
public interface MyBridge {
public void run();
}
Implementing class:
package com.myapp.bridge;
import lombok.Getter;
import lombok.Setter;
public class MyBridgeHandler implements MyBridge {
@Getter(AccessLevel.PACKAGE)
@Setter(AccessLevel.PACKAGE)
public String value;
public void run() {
String msg = "hello";
setValue(msg);
// This works and prints hello ten times.
for (int i = 0; i < 10; i++) {
System.out.println(getValue());
}
}
}
Calling class:
package com.myapp.bridge;
import lombok.Getter;
public class App {
@Getter
private MyBridge bridge = new MyBridgeHandler();
public void printValue() {
// IntelliJ IDEA doesn't seem to let me access this getter?
String aValue = getBridge().getValue();
System.out.println(aValue);
}
public static void main(String args []) {
App app = new App();
app.printValue();
}
}
Question(s):
-
How do I obtain / access the
MyBridgetHandler.getValue()method inside my calling class
(IntelliJ IDEA's code completion doesn't even display / or opt for this method after I put a dot aftergetBridge().inside myprintValuemethod)? -
Should it be placed inside the
MyBridgeinterface? If so, how would the implementation look like?
Note, this is not an IntelliJ specific question as my other POJOs have lombok-based @getter & @setter annotations and work inside calling classes via IntelliJ IDEA.
Am able to see hello be printed to stdout 10 times so it is getting set.
Seems like a visibility / accessibility issue.
答案1
得分: 0
已修复/找到解决方案...
在MyBridge接口内，我添加了以下方法：
package com.myapp.bridge;
public interface MyBridge {
public void run();
String getValue();
}
在MyBridgeHandler Java类内实现如下：
package com.myapp.bridge;
import lombok.Getter;
import lombok.Setter;
public class MyBridgeHandler implements MyBridge {
@Setter(AccessLevel.PACKAGE)
public String value;
public void run() {
String msg = "hello";
setValue(msg);
// This works and prints hello ten times.
for (int i = 0; i < 10; i++) {
System.out.println(getValue());
}
}
public String getValue() {
return value;
}
}
大功告成！我现在能够在App.printValue()方法内访问它。
英文:
Fixed / found the solution...
Inside the MyBridge interface, I added the following method:
package com.myapp.bridge;
public interface MyBridge {
public void run();
String getValue();
}
Implemented it like this inside MyBridgeHandler Java class:
package com.myapp.bridge;
import lombok.Getter;
import lombok.Setter;
public class MyBridgeHandler implements MyBridge {
@Setter(AccessLevel.PACKAGE)
public String value;
public void run() {
String msg = "hello";
setValue(msg);
// This works and prints hello ten times.
for (int i = 0; i < 10; i++) {
System.out.println(getValue());
}
}
public String getValue() {
return value;
}
}
Voila! I am able to access it now inside the App.printValue() method.
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