資源的打開就需要對應的關閉，但我們常會忘記關閉資源，或在多處代碼關閉資源感到雜亂，有沒有簡潔的關閉方法呢？
自動關閉資源類需實現AutoCloseable接口和配合try-with-resource語法糖使用
public class YSOAPConnection implements AutoCloseable {
private SOAPConnection connection;
public static YSOAPConnection open(SOAPConnectionFactory soapConnectionFactory) throws SOAPException {
YSOAPConnection ySoapConnection = new YSOAPConnection();
SOAPConnection connection = soapConnectionFactory.createConnection();
ySoapConnection.setConnection(connection);
return ySoapConnection;
}
public SOAPMessage call(SOAPMessage request, Object to) throws SOAPException {
return connection.call(request, to);
}
@Override
public void close() throws SOAPException {
if (connection != null) { connection.close(); }
}
}
//自動關閉的資源類使用示例
try (YSOAPConnection soapConnection=YSOAPConnection.open(soapConnectionFactory)){
SOAPMessage soapResponse = soapConnection.call(request, endpoint);
…//數據操作
} catch (Exception e) {
log.error(e.getMessage(), e);
…
}
lombok注解@Cleanup，對象生命周期結束時會調用public void close();對象需實現AutoCloseable接口
import lombok.Cleanup;
@Cleanup // @Cleanup的使用
YSOAPConnection soapConnection=YSOAPConnection.open(soapConnectionFactory)

總結

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