java - 从枚举返回字符串

Question

我想使用这个枚举结构来返回字符串。

public enum Exchanges {

    PROCESSING("processing");

    private final String type;

    Exchanges(final String type) {
        this.type = type;
    }

    public String getType() {
        return type;
    }

    @Override
    public String toString() {
        return type;
    }
}

当我使用 Exchanges.PROCESSING 时，出现错误:

Syntax error, insert "VariableDeclarators" to complete 
 LocalVariableDeclaration

如何解决这个问题？

Answer 1

channel.exchangeDeclare(String exchange , BuiltinExchangeType obj)

应该是

channel.exchangeDeclare(Exchanges exchange , BuiltinExchangeType obj)

或者你应该改变方法调用

channel.exchangeDeclare(Exchanges.PROCESSING, BuiltinExchangeType.TOPIC);

至

channel.exchangeDeclare(Exchanges.PROCESSING.getType(), BuiltinExchangeType.TOPIC);