使用内容协商让Spring MVC支持 json格式输出

1. web.xml配置如下

     
 <servlet>
  <servlet-name>dispatherContext</servlet-name>
  <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
  <load-on-startup>1</load-on-startup>
 </servlet>
 <servlet-mapping>
  <servlet-name>dispatherContext</servlet-name>
  <url-pattern>*.json</url-pattern>
 </servlet-mapping>

 

2.   dispatherContext-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:context="http://www.springframework.org/schema/context"
 xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
  http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd">
 <context:component-scan base-package="com.zjhcsoft.mobi.web" />
 <context:annotation-config />
 <bean
  class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
  <property name="ignoreAcceptHeader" value="true" />
  <property name="defaultContentType" value="text/html" />
  <property name="mediaTypes">
   <map>
    <entry key="json" value="application/json" />
   </map>
  </property>
  <property name="favorParameter" value="false" />
  <property name="viewResolvers">
   <list>
    <bean class="org.springframework.web.servlet.view.BeanNameViewResolver" />
   </list>
  </property>
  <property name="defaultViews">
   <list>
    <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
   </list>
  </property>
 </bean>

</beans>

 

3.  

 

 @RequestMapping("/queryKPIDetail.json")
 public void queryKPIDetail(ModelMap modelMap,HttpServletRequest request) {
  //request请求参数
  String kpiId = request.getParameter("kpiId");
  String operateDate = request.getParameter("operateDate");
  
  
  List<Map<String, String>> list = jdbcBaseDAOImpl.queryForList(kpiSql);
  modelMap.put("mobi", list);
 }

 

4.http://localhost/login.json?phone=15988104039 访问即可返回json格式的数据