springboot项目提示No converter found for return value of type:

        <!--json-->
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.9.9</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-annotations</artifactId>
            <version>2.9.9</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.9.9</version>
        </dependency>

　　导入以上jar包，解决问题！

来源：https://www.jianshu.com/p/a6f35524dc25

标签：core,www,jackson,converter,No,2.9,return,com,fasterxml
来源： https://www.cnblogs.com/shunxiyuan/p/15724453.html