Cause: After using the MyBatisX plug-in in IDEA, the property attribute value of the <resultMap> tag in the mapper.xml file turns red.
I searched for some solutions on the Internet, and the mapper.xml file may report red. There may be the following two possibilities:
Case 1: The entity path is wrong
To write the full path of the corresponding entity class, you can copy the full path name by right-clicking the entity class to avoid manual input errors:
Case 2: Lombok and MyBatisX plugin conflicts
Solution 1: Just uninstall the MyBatisX plug-in (a temporary solution, not a permanent solution)
Solution 2: It may be that the Lombok dependency is imported, but the Lombok plug-in is not installed, resulting in a red report
It should be noted that to use Lombok in IDEA, not only must add the lombok dependency in pom.xml, but also ensure that the Lombok plug-in is downloaded and installed in IDEA.
- Introduce lombok dependency in pom.xml:
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>- Install the Lombok plugin:
Open IDEA — File — Settings — Plugins — search for lombok — install — Apply — wait for IDEA to restart to complete
Supplement: If IDEA can't find any plug-ins in Plugins, you can try another network first, or you can choose to install lombok locally. The following demonstrates how to install the plugin locally:
Step 1: Open the plug-in official website: JetBrains Marketplace , enter the required plug-in name in the search box, and enter lombok here:
Step 2: Choose the version you want to download:
Step 3: After downloading, put it under a certain disk, no need to decompress, just remember the location of the file
Step 4: Enter IDEA — Annotation processors — tick
Step 5: Enter Plugins, then click Install plugin from disk on the right, find the zip package you just downloaded, and click OK
Step 6: Finally restart IDEA.