Sweep: 增加一个新的api，实现分页查询用户列表

Here's the PR! https://github.com/yaoyasong/spring-boot-mybatis-xml/pull/13.

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Step 1: 🔍 Code Search

I found the following snippets in your repository. I will now analyze these snippets and come up with a plan.

Some code snippets I looked at (click to expand). If some file is missing from here, you can mention the path in the ticket description.

https://github.com/yaoyasong/spring-boot-mybatis-xml/blob/aeea7ee1ffa60f6e8ebc6103b537117b23fca3fc/src/test/java/com/neo/web/UserControllerTest.java#L1-L36 https://github.com/yaoyasong/spring-boot-mybatis-xml/blob/aeea7ee1ffa60f6e8ebc6103b537117b23fca3fc/src/main/java/com/neo/model/User.java#L1-L82 https://github.com/yaoyasong/spring-boot-mybatis-xml/blob/aeea7ee1ffa60f6e8ebc6103b537117b23fca3fc/users.sql#L1-L30 https://github.com/yaoyasong/spring-boot-mybatis-xml/blob/aeea7ee1ffa60f6e8ebc6103b537117b23fca3fc/src/test/java/com/neo/mapper/UserMapperTest.java#L1-L52 https://github.com/yaoyasong/spring-boot-mybatis-xml/blob/aeea7ee1ffa60f6e8ebc6103b537117b23fca3fc/src/main/java/com/neo/web/UserController.java#L1-L59

Step 2: 🧐 Snippet Analysis

From looking through the relevant snippets, I decided to make the following modifications:

File Path	Proposed Changes
`src/main/java/com/neo/mapper/UserMapper.java`	Modify src/main/java/com/neo/mapper/UserMapper.java with contents: * Add a new method signature: `List<User> getUsersPaginated(int startIndex, int pageSize);`
`src/main/resources/mybatis/mapper/UserMapper.xml`	Modify src/main/resources/mybatis/mapper/UserMapper.xml with contents: Add a new SQL query inside the `<mapper>` tag that fetches users with pagination. The query should look like this: ``
`src/main/java/com/neo/web/UserController.java`	Modify src/main/java/com/neo/web/UserController.java with contents: * Add a new API endpoint that fetches paginated users. The method should look like this: `@RequestMapping("/getUsersPaginated") public List<User> getUsersPaginated(@RequestParam("startIndex") int startIndex, @RequestParam("pageSize") int pageSize) { return userMapper.getUsersPaginated(startIndex, pageSize); }`
`src/test/java/com/neo/web/UserControllerTest.java`	Modify src/test/java/com/neo/web/UserControllerTest.java with contents: * Add a new test case for the new API endpoint. The test case should send a GET request to "/getUsersPaginated" with appropriate query parameters and assert that the response status is OK and the response body contains the expected number of users.
`src/test/java/com/neo/mapper/UserMapperTest.java`	Modify src/test/java/com/neo/mapper/UserMapperTest.java with contents: * Add a new test case for the new method in the UserMapper interface. The test case should call `userMapper.getUsersPaginated(startIndex, pageSize)` and assert that the returned list contains the expected number of users.

Step 3: 📝 Planning

I have created a plan for writing the pull request. I am now working my plan and coding the required changes to address this issue. Here is the planned pull request:

Add API endpoint for paginated user retrieval sweep/paginated-user-retrieval

Description

This PR adds a new API endpoint that allows for paginated retrieval of user data. The existing UserMapper interface, its implementation, the UserController, and the corresponding test classes have been modified to accommodate this new feature.

Summary of Changes

Added a new method getUsersPaginated in the UserMapper interface to support fetching users with pagination.

Updated the UserMapper.xml file to include a new SQL query that fetches users with pagination.

Added a new API endpoint in the UserController that calls the new method in the UserMapper to fetch the paginated users.

Updated the UserControllerTest class to include a test case for the new API endpoint.

Updated the UserMapperTest class to include a test case for the new method in the UserMapper interface.

Please review and merge this PR. Thank you!

Step 4: ⌨️ Coding

File	Instructions	Progress
`src/main/java/com/neo/mapper/UserMapper.java`	Modify src/main/java/com/neo/mapper/UserMapper.java with contents: * Add a new method signature: `List<User> getUsersPaginated(int startIndex, int pageSize);`	✅ Commit `e143be6`
`src/main/resources/mybatis/mapper/UserMapper.xml`	Modify src/main/resources/mybatis/mapper/UserMapper.xml with contents: Add a new SQL query inside the `<mapper>` tag that fetches users with pagination. The query should look like this: ``	✅ Commit `e5c8a55`
`src/main/java/com/neo/web/UserController.java`	Modify src/main/java/com/neo/web/UserController.java with contents: * Add a new API endpoint that fetches paginated users. The method should look like this: `@RequestMapping("/getUsersPaginated") public List<User> getUsersPaginated(@RequestParam("startIndex") int startIndex, @RequestParam("pageSize") int pageSize) { return userMapper.getUsersPaginated(startIndex, pageSize); }`	✅ Commit `4dd9be6`
`src/test/java/com/neo/web/UserControllerTest.java`	Modify src/test/java/com/neo/web/UserControllerTest.java with contents: * Add a new test case for the new API endpoint. The test case should send a GET request to "/getUsersPaginated" with appropriate query parameters and assert that the response status is OK and the response body contains the expected number of users.	✅ Commit `27c2318`
`src/test/java/com/neo/mapper/UserMapperTest.java`	Modify src/test/java/com/neo/mapper/UserMapperTest.java with contents: * Add a new test case for the new method in the UserMapper interface. The test case should call `userMapper.getUsersPaginated(startIndex, pageSize)` and assert that the returned list contains the expected number of users.	✅ Commit `0c2e0f5`	I have finished coding the issue. I am now reviewing it for completeness.

Step 5: 🔁 Code Review

Here are my self-reviews of my changes at sweep/paginated-user-retrieval.

Here is the 1st review

Great job on implementing the pagination feature. However, there is a minor issue that needs to be addressed:

In the UserMapperTest.java file, the testGetUsersPaginated() method might fail if there are less than 10 users in the database. To fix this, you should assert that the size of the returned list is less than or equal to 10, instead of exactly 10. Here is the suggested change:
@Test
public void testGetUsersPaginated() throws Exception {
    List<User> users = userMapper.getUsersPaginated(0, 10);
    Assert.assertTrue(users.size() <= 10);
}
Keep up the good work!

I finished incorporating these changes.

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yaoyasong / spring-boot-mybatis-xml