[BUG] [JAVA] generate-avro is generating date-time field in openapi yaml file as java.lang.CharSequence

[tommy38hk]

Bug Report Checklist

• Have you provided a full/minimal spec to reproduce the issue? Yes
• Have you validated the input using an OpenAPI validator (example)? Yes
• Have you tested with the latest master to confirm the issue still exists? Yes, tried version 6.6.0 openapi-generator-maven-plugin
• Have you searched for related issues/PRs? Yes
• What's the actual output vs expected output?
  Actual output
  {
  "name": "requestedDate",
  "type": ["null", "string"],
  "doc": "Request",
  "default": null
  }
  Java
  private java.lang.CharSequence requestedDate;

Expected output
{
"name": "requestedDate",
"type": {
"type": "int",
"logicalType": "date"
}
}
private java.time.LocalDate requestedDate;

• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

When date-time format is specified in OpenAPI yaml, it is expected the Java class and avro file to be created for datetime instead of string

openapi-generator version

6.6.0

OpenAPI declaration file content or url

</parent>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo</name>
<description>demo</description>
<properties>
    <java.version>17</java.version>
    <openapi.style.validator.version>1.7</openapi.style.validator.version>

</properties>
<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <scope>test</scope>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-web</artifactId>
    </dependency>
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-context</artifactId>
    </dependency>
    <dependency>
        <groupId>javax.validation</groupId>
        <artifactId>validation-api</artifactId>
        <version>2.0.1.Final</version>
    </dependency>
    <!-- https://mvnrepository.com/artifact/io.swagger.core.v3/swagger-annotations -->
    <dependency>
        <groupId>io.swagger.core.v3</groupId>
        <artifactId>swagger-annotations</artifactId>
        <version>2.2.15</version>
    </dependency>

    <dependency>
        <groupId>org.openapitools</groupId>
        <artifactId>jackson-databind-nullable</artifactId>
        <version>0.2.1</version>
    </dependency>
    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>javax.servlet-api</artifactId>
        <version>3.1.0</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>jakarta.annotation</groupId>
        <artifactId>jakarta.annotation-api</artifactId>
        <version>1.3.5</version>
        <scope>provided</scope>
    </dependency>

    <dependency>
        <groupId>org.apache.avro</groupId>
        <artifactId>avro</artifactId>
        <version>1.11.2</version>
    </dependency>

</dependencies>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
        <plugin>
            <groupId>io.swagger.codegen.v3</groupId>
            <artifactId>swagger-codegen-maven-plugin</artifactId>
            <version>3.0.11</version>
            <executions>
                <execution>
                    <id>convert</id>
                    <phase>process-resources</phase>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <configuration>
                        <inputSpec>${project.basedir}/src/main/resources/static/openapi.yaml</inputSpec>

                        <!-- Use "openapi" to convert YAML->JSON or "openapi-yaml" to convert JSON->YAML -->
                        <language>openapi</language>

                        <!-- Output directory, relative to the project directory. Default is ${project.build.directory}/generated-sources/swagger -->
                        <output>${project.build.directory}/specs</output>
                        <configOptions>
                            <!-- Default output file name is openapi.json or openapi.yaml -->
                            <outputFile>generated-api.json</outputFile>
                        </configOptions>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-resources-plugin</artifactId>
            <version>3.1.0</version>
            <configuration>
                <resources>
                    <resource>
                        <directory>src/main/resources</directory>
                        <filtering>true</filtering>
                    </resource>
                </resources>
            </configuration>
            <executions>
                <execution>
                    <phase>generate-sources</phase>
                    <goals>
                        <goal>resources</goal>
                    </goals>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.openapitools</groupId>
            <artifactId>openapi-generator-maven-plugin</artifactId>
            <version>6.6.0</version>
            <executions>
                <execution>
                    <id>generate-java</id>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <configuration>
                        <inputSpec>${project.basedir}/src/main/resources/static/openapi.yaml</inputSpec>
                        <generatorName>spring</generatorName>
                        <apiPackage>com.example.demo.api</apiPackage>
                        <modelPackage>com.example.demo.model</modelPackage>

                        <configOptions>
                            <interfaceOnly>true</interfaceOnly>
                            <sourceFolder>src/gen/java/main</sourceFolder>
                            <additionalModelTypeAnnotations>
                                @com.fasterxml.jackson.annotation.JsonIgnoreProperties(ignoreUnknown = true)
                            </additionalModelTypeAnnotations>
                            <dateLibrary>java8</dateLibrary>
                            <useTags>true</useTags>
                            <skipDefaultInterface>true</skipDefaultInterface>
                        </configOptions>
                        <importMappings>

                        </importMappings>
                        <typeMappings>
                            <typeMapping>float=java.math.BigDecimal</typeMapping>
                            <typeMapping>double=java.math.BigDecimal</typeMapping>
                        </typeMappings>
                    </configuration>

                </execution>
                <execution>
                    <id>generate-avro</id>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <configuration>
                        <inputSpec>${project.basedir}/src/main/resources/static/openapi.yaml</inputSpec>
                        <generatorName>avro-schema</generatorName>
                        <configOptions>
                            <sourceFolder>${project.build.directory}</sourceFolder>
                        </configOptions>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.apache.avro</groupId>
            <artifactId>avro-maven-plugin</artifactId>
            <version>1.11.2</version>
            <executions>
                <execution>
                    <phase>generate-sources</phase>
                    <goals>
                        <goal>schema</goal>
                    </goals>
                    <configuration>
                        <sourceDirectory>${project.build.directory}</sourceDirectory>
                        <outputDirectory>${project.build.directory}/generated-sources/openapi/src/gen/java/main</outputDirectory>
                    </configuration>
                </execution>
            </executions>
        </plugin>
        <plugin>
            <groupId>org.openapitools.openapistylevalidator</groupId>
            <artifactId>openapi-style-validator-maven-plugin</artifactId>
            <version>${openapi.style.validator.version}</version>
            <dependencies>
                <dependency>
                    <groupId>org.openapitools.openapistylevalidator</groupId>
                    <artifactId>openapi-style-validator-cli</artifactId>
                    <version>${openapi.style.validator.version}</version>
                </dependency>
            </dependencies>
            <executions>
                <execution>
                    <goals>
                        <goal>validate</goal>
                    </goals>
                    <configuration>
                        <inputFile>${project.basedir}/src/main/resources/static/openapi.yaml</inputFile>
                    </configuration>
                </execution>
            </executions>
        </plugin>

    </plugins>
</build>

(for JSON code), so it becomes more readable. If it is longer than about ten lines,
please create a Gist (https://gist.github.com) or upload it somewhere else and
link it here.
  -->

##### Generation Details

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    Prefer CLI steps, including the language, libraries and various options. 
    Providing config-based settings allows for simpler testing across CLI and plugins. 
    For examples, see https://github.com/OpenAPITools/openapi-generator/tree/master/bin/configs
-->
run mvn clean install
##### Steps to reproduce

<!-- unambiguous set of steps to reproduce the bug.-->

##### Related issues/PRs

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##### Suggest a fix

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