问题:java.lang.IllegalArgumentException: No converter found for return value of type: class sun.ssm.commo
转载出处:https://www.cnblogs.com/hafiz/p/5812873.html
搭建版本:
<spring.version>4.3.3.RELEASE</spring.version>
<mybatis.version>3.4.1</mybatis.version>
<slf4j.version>1.7.7</slf4j.version>
<log4j.version>1.2.17</log4j.version>
<mysql.version>5.1.30</mysql.version>
1.原因:这是因为springmvc默认是没有对象转换成json的转换器的,需要手动添加jackson依赖。
2.解决步骤:
手动添加jackson依赖到pom.xml文件中,
<properties>
<jackson.version>2.5.4</jackson.version>
</properties>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>${jackson.version}</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>${jackson.version}</version>
</dependency>
我利用方法1解决了我的问题
如果还是没有解决,则进行以下步骤
在springmvc配置文件中进行如下配置
<mvc:annotation-driven> <mvc:message-converters> <bean class="org.springframework.http.converter.StringHttpMessageConverter"/> <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter"/> </mvc:message-converters> </mvc:annotation-driven>