What do you mean by interface call exception?

Call interface exception refers to call third-party interface system exception, user operation exception, authorization exception, etc.

Interface (hardware interface) refers to the communication rules between different functional layers of the same computer. An interface specifies members that must be provided by the class or other interface that implements it. Similar to classes, interfaces can contain methods, properties, indexers, and events as members.

Java interface and Java abstract class represent abstract types, which are the concrete manifestations of the abstract layer that we need to propose. OOP object-oriented programming must be interface-oriented and abstract-oriented, so as to improve the reuse rate of programs, increase the maintainability and expansibility of programs, and correctly use useful abstract types such as interfaces and abstract classes as the top layer of java structure.

Causes of abnormal calling interface

1, the interface solved the connection timeout.

Connection timeout is an exception reason, which refers to the exception caused by failure to establish a connection with the server after the original time of the specified call. There are many reasons to solve the connection timeout interface, such as busy server, abnormal reasons and network instability.

The original solution called is as follows: check whether the server works normally through the interface solution and ensure that the server is not attacked or down. Check whether the network connection is normal and ensure that the network connection is stable. You can increase the connection timeout by modifying the configuration file.

2. Wrong return value

Error in return value refers to the exception caused by the inconsistency between the return result and the expected result after calling the interface. There are many reasons for the return value error, such as parameter passing error, interface version mismatch, etc.

The solution is as follows: check whether the parameters are passed correctly and ensure that the format and type of the parameters are passed correctly. Check whether the interface versions match and ensure that the correct interface version is used. For the return value error, it is necessary to analyze the return value of the interface in detail, find out the cause of the error and deal with it accordingly.