新的商城模板调试接口,一个商品列表的接口调用,返回报错

org.thymeleaf.exceptions.TemplateInputException: Error resolving template [sys/prod/prod/list], template might not exist or might not be accessible by any of the configured Template Resolvers

    at org.thymeleaf.engine.TemplateManager.resolveTemplate(TemplateManager.java:869)

    at org.thymeleaf.engine.TemplateManager.parseAndProcess(TemplateManager.java:607)

    at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1098)

    at org.thymeleaf.TemplateEngine.process(TemplateEngine.java:1072)

    at org.thymeleaf.spring5.view.ThymeleafView.renderFragment(ThymeleafView.java:362)

    at org.thymeleaf.spring5.view.ThymeleafView.render(ThymeleafView.java:189)

问题原因:

在controller上加注解@Controller 和@RestController都可以在前端调通接口，但是二者的区别在于，当用前者的时候在方法上必须添加注解@ResponseBody，

如果不添加@ResponseBody，就会报上面错误，因为当使用@Controller 注解时，spring默认方法返回的是view对象（页面）。

而加上@ResponseBody，则方法返回的就是具体对象了。

@RestController的作用就相当于@Controller+@ResponseBody的结合体

修改为@RestController 后正常

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