@ResponseBody java.lang.IllegalArgumentException: No converter found for return value of type:class
最近在搭建SSM项目，在使用@ResponseBody注解返回Json数据时出现了问题，报错java.lang.IllegalArgumentException: No converter found for return value of type: class java.util.HashMap，问题已解决，在这里做下备份。 如下是在网上找到的解决办法； 1、导入jackson 2.5.4包
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