在Controller类中,需要返回JSON的方法上加上注释@ResponseBody,这是必须的。
然后spring-servlet.xml配置如下:
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd"> <!-- 启动扫描所有的controller aokunsang--> <context:component-scan base-package="com.xxx"/> <!-- 定义注解驱动Controller方法处理适配器 ,注:该适配器必须声明在<mvc:annotation-driven />之前,否则不能正常处理参数类型的转换 --> <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"> <property name="messageConverters"> <list> <bean class="org.springframework.http.converter.xml.Jaxb2RootElementHttpMessageConverter" /> <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" > <property name="objectMapper"> <bean class="com.fasterxml.jackson.databind.ObjectMapper"> <property name="dateFormat"> <bean class="java.text.SimpleDateFormat"> <!-- 设置全局返回JSON到前端时日期格式化 --> <constructor-arg type="java.lang.String" value="yyyy-MM-dd HH:mm:ss"/> </bean> </property> </bean> </property> </bean> </list> </property> </bean> <!-- 会自动注册RequestMappingHandlerMapping与RequestMappingHandlerAdapter 两个bean,是spring MVC为@Controllers分发请求所必须的。 并提供了:数据绑定支持,@NumberFormatannotation支持,@DateTimeFormat支持,@Valid支持,读写XML的支持(JAXB),读写JSON的支持(Jackson) --> <mvc:annotation-driven /> <!-- 配置js,css等静态文件直接映射到对应的文件夹,不被DispatcherServlet处理 --> <mvc:resources location="/resources/**" mapping="/resources/**"/> <!-- jsp页面解析器,当Controller返回XXX字符串时,先通过拦截器,然后该类就会在/WEB-INF/views/目录下,查找XXX.jsp文件--> <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/views"></property> <property name="suffix" value=".jsp"></property> </bean> </beans>