问题描述:
出现这样的情况 : No converter found for return value of type: class java.util.ArrayList
原因是没有办法解析json字符串,
1.需要在pom文件中添加依赖
/*
<!--json-->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.11.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.11.0</version>
</dependency>
*/
2.添加完成之后,需要在project structure中的lib中也添加相关依赖!