// 需要在多配置一个拦截
@RequestMapping("")
@ResponseBody
public HashMap<Object, Object> selectOnejson(String sqlId, HttpServletRequest request) {
@SuppressWarnings("unchecked")
HashMap<Object, Object> result = (HashMap<Object, Object>) (sqlId, (request));
return result;
}
// .html后缀的不能使用spring自带的MappingJacksonHttpMessageConverter
@RequestMapping("")
@ResponseBody
public String selectOne(String sqlId, HttpServletRequest request) throws JsonGenerationException, JsonMappingException, IOException {
@SuppressWarnings("unchecked")
HashMap<Object, Object> result = (HashMap<Object, Object>) (sqlId, (request));
ObjectMapper o = new ObjectMapper();
return (result);
} <bean class="">
<property name="messageConverters">
<list>
<bean class=""/>
</list>
</property>
</bean> <servlet-mapping>
<servlet-name>springServlet</servlet-name>
<url-pattern>*.html</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>springServlet</servlet-name>
<url-pattern>*.json</url-pattern>
</servlet-mapping>我觉得spring mvc中的url这样处理不太好，也许可以指定某个属性，让它不根据url判断返回的内容是格式，虽然ajax提交时已经指定为json，dataType:"json"，但不起作用。最后还是情愿手工转成String返回来。