【idea | knife4j | springboot2/3|接上篇|终篇】knife4j版本号与spring boot版本不兼容问题（细节问题）

文章目录

• • 问题
  • • 问题分解
    • 尝试
    • • 问题再次出现：发现model实体类模块也是需要的。
    • 还有问题：程序包org.springdoc.core.models不存在
    • • 解决
  • 总结。
• 最后，项目还是应匹配版本号，在项目创建时确定好springboot版本号以及对应的依赖版本

问题

经过上篇 && 中篇的修改，再次使用mvn clean install尝试下载knife4j的jar包，发现仍然被中止了，仔细查看报错信息，发现了新的错误，基本判断都是细节上的问题。复盘的重要性

D:\develop。。。re\Envi。。ent\jdk\jdk-8u301-windows-x64\bin\java.exe -Dmaven.multiModuleProjectDirectory=D:\project\spring_project\lease -Dmaven.home=D:\developerSoftware\Environment\apache-maven-3.6.3 -Dclassworlds.conf=D:\developerSoftware\Environment\apache-maven-3.6.3\bin\m2.conf "-Dmaven.ext.class.path=D:\Common Softwears\IntelliJ IDEA\IntelliJ IDEA 2021.1.1\plugins\maven\lib\maven-event-listener.jar" "-javaagent:D:\Common Softwears\IntelliJ IDEA\IntelliJ IDEA 2021.1.1\lib\idea_rt.jar=62406:D:\Common Softwears\IntelliJ IDEA\IntelliJ IDEA 2021.1.1\bin" -Dfile.encoding=UTF-8 -classpath D:\developerSoftware\Environment\apache-maven-3.6.3\boot\plexus-classworlds-2.6.0.jar;D:\developerSoftware\Environment\apache-maven-3.6.3\boot\plexus-classworlds.license org.codehaus.classworlds.Launcher -Didea.version=2021.1.1 -s D:\developerSoftware\Environment\apache-maven-3.6.3\conf\settings.xml install
[INFO] Scanning for projects...
[ERROR] [ERROR] Some problems were encountered while processing the POMs:
[ERROR] 'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 20, column 21
[ERROR] 'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 15, column 21
 @ 
[ERROR] The build could not read 2 projects -> [Help 1]
[ERROR]   
[ERROR]   The project com.atguigu:model:1.0-SNAPSHOT (D:\project\spring_project\lease\model\pom.xml) has 1 error
[ERROR]     'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 20, column 21
[ERROR]   
[ERROR]   The project com.atguigu:web-app:1.0-SNAPSHOT (D:\project\spring_project\lease\web\web-app\pom.xml) has 1 error
[ERROR]     'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 15, column 21
[ERROR] 
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR] 
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/ProjectBuildingException

Process finished with exit code 1

问题分解

发现问题：

[ERROR] 'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 20, column 21
[ERROR] 'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 15, column 21
 @ 

具体定位：1.\lease\model\pom.xml) has 1 error [ERROR] 'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 20, column 21 [ERROR]

2.\lease\web\web-app\pom.xml) has 1 error [ERROR] 'dependencies.dependency.version' for com.github.xiaoymin:knife4j-openapi3-jakarta-spring-boot-starter:jar is missing. @ line 15, column 21 [ERROR]

分析：1.\model\pom.xml

不匹配，未修改。

2.同样原因

尝试

问题再次出现：发现model实体类模块也是需要的。

错误：

[ERROR] /D:/project/spring_project/lease/model/src/main/java/com/atguigu/lease/model/entity/FacilityInfo.java:[9,2] 找不到符号 符号: 类 Schema

添加，再次尝试。

还有问题：程序包org.springdoc.core.models不存在

问题定位：在web模块出的问题

不应该在这个依赖坐标放到web模块下，应该在admin以及app下的pom文件中写入。

web-admin 是子模块，但不会自动继承 dependencies。Maven设计规则。

找不到符号: 类 GroupedOpenApi
package org.springdoc.core.models 不存在

说明 不是 Knife4j 依赖的问题，而是 缺少 springdoc-openapi 依赖。

GroupedOpenApi 这个类其实来自 springdoc，不是 Knife4j。

实体类来源：org.springdoc.core.models.GroupedOpenApi属于：

SpringDoc OpenAPI

解决

在 web-admin/pom.xml 再加：

<dependency>
    <groupId>org.springdoc</groupId>
    <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>
    <version>2.3.0</version>
</dependency>

总结。

修改：

lease pom：

<dependency>
                <groupId>com.github.xiaoymin</groupId>
                <artifactId>knife4j-openapi2-spring-boot-starter</artifactId>
                <version>${knife4j.version}</version>
            </dependency>

web-admin / web-app:

<dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-openapi2-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>io.swagger.core.v3</groupId>
            <artifactId>swagger-annotations</artifactId>
            <version>2.2.15</version>
        </dependency>

<!--        <dependency>-->
<!--            <groupId>org.springdoc</groupId>-->
<!--            <artifactId>springdoc-openapi-starter-webmvc-ui</artifactId>-->
<!--            <version>1.6.15</version>-->
<!--        </dependency>-->
        <dependency>
            <groupId>org.springdoc</groupId>
            <artifactId>springdoc-openapi-ui</artifactId>
            <version>1.6.15</version>
        </dependency>

model:

<dependency>
            <groupId>com.github.xiaoymin</groupId>
            <artifactId>knife4j-openapi2-spring-boot-starter</artifactId>
        </dependency>
        <dependency>
            <groupId>io.swagger.core.v3</groupId>
            <artifactId>swagger-annotations</artifactId>
            <version>2.2.15</version>
        </dependency>

http://localhost:8080/doc.html#/home

最后，项目还是应匹配版本号，在项目创建时确定好springboot版本号以及对应的依赖版本

切勿有交叉