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The Postman interface testing tool is a very popular and widely used tool that provides rich functions and a user-friendly interface, making interface testing simpler and more efficient. This article will introduce the features, functions, and usage of Postman in detail, as well as its application in interface testing.

Postman is a cross-platform application that can run on multiple operating systems such as Windows, MacOS, Linux, etc. It can not only be used for manual testing, but can also be integrated into automated testing processes. With Postman, developers and testers can easily create, send, and verify HTTP requests.

The main features of Postman are as follows:

1. User-friendly interface: Postman provides an intuitive and easy-to-use interface that allows users to easily create and manage requests. Its interface is clear and concise, and all functions are clear at a glance, without cumbersome configuration and learning costs.

2. Support for multiple request types: Postman supports multiple commonly used HTTP request types, including GET, POST, PUT, DELETE, etc. Users can select the appropriate request type according to the requirements of the interface, and add request headers, request parameters, and request bodies.

3. Powerful request management function: Postman provides a visual request management function, and users can easily create, edit and delete requests on the interface. Each request can be grouped and named for easy management and search.

4. Rich request setting options: Through Postman, users can set up requests in detail. They can add request headers, request parameters, request bodies, and authentication information, etc. They can also set advanced options such as proxy, timeout, redirection, etc. to meet various complex testing needs.

5. Support testing and assertion functions: Postman has built-in testing and assertion functions, which can verify the data returned by the interface. Users can write custom assertion scripts to determine whether the returned data meets expectations. This is very useful for automated testing and integration testing.

6. Batch testing and automated testing support: Postman supports batch testing and automated testing. Users can combine multiple requests into a collection and define different test scripts in the collection. By setting environment variables and global variables, more flexible and complex test scenarios can be achieved.

7. Rich export and sharing functions: Postman can export requests and test results in multiple formats, including JSON, XML, CSV, and HTML. Users can share test results and documents with others to facilitate team collaboration and knowledge sharing.

Postman is widely used in interface testing. It can be used in the following aspects:

1. Single interface test: With Postman, you can quickly create and send HTTP requests and verify the data returned by the interface. Users can manually enter request parameters or use predefined variables and environment configurations.

2. Interface collection test: Postman allows users to combine multiple interface requests into a collection and define test scripts in the collection. Users can execute the requests in the collection in sequence and determine whether the test results meet expectations.

3. Data-driven testing: Postman supports testing using data files in formats such as CSV and JSON. Users can separate test data from requests and automatically execute multiple test cases by looping through data files.

4. Performance test: By setting the number of loops and request intervals, you can perform simple performance tests in Postman. It can simulate multiple concurrent requests and test the response time and throughput of the interface.

5. Interface automated testing: You can use Postman's test script function to write automated interface test scripts. By writing assertion scripts and expected results, you can achieve automated interface verification.

In summary, Postman is a powerful and easy-to-use interface testing tool. It provides rich functions and flexible options for various types of interface testing. Whether it is a single interface test or an integration test, performance test or automated test, Postman can provide a convenient solution. For developers and testers, Postman is one of the must-have tools.