Spring常用配置及解析类说明

springmvc配置用法的文章很多，但具体描述清楚的不多，这里主要介绍下常用的配置项的用法，以及它的解析类，springmvc处理内容有两种方式，一种是converter,另一种是viewresolver，两种都能处理json，xml以及form内容格式。

<?xml version="1.0" encoding="utf-8" standalone="no"?> 
<beans xmlns="http://www.springframework.org/schema/beans" 
   xmlns:context="http://www.springframework.org/schema/context" 
   xmlns:aop="http://www.springframework.org/schema/aop" xmlns:mvc="http://www.springframework.org/schema/mvc" 
   xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/xmlschema-instance" 
   xmlns:util="http://www.springframework.org/schema/util" 
   xmlns:c="http://www.springframework.org/schema/c" 
   xsi:schemalocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd  
     http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.2.xsd 
     http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.2.xsd 
     http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd 
     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.2.xsd"> 
 
<!-- 如果controller里要用到配置，才需要加载配置，因为一般这个配置由dispatchservlet来加载，和spring监听类不在一个上下文里，想要知道原因请看 
http://blog.csdn.net/strivezxq/article/details/43795081 这篇文章详细解析了spring初始化过程 --> 
 
   <context:property-placeholder location="classpath:app.properties" /> 
<!--scans the classpath for annotated components @component, @repository, @service, and @controller  
通过use-default-filters="false",可以设置只扫描哪些注释，一般springmvc配置只加载下面两种注释 
--> 
<context:component-scan base-package="your.base.package" use-default-filters="false"> 
 
<context:include-filter type="annotation" expression="org.springframework.stereotype.controller"/> 
<context:include-filter type="annotation" expression="org.springframework.web.bind.annotation.controlleradvice"/> 
</context:component-scan> 
<!-- <context:component-scan annotation-config = "true">已经包含了context:annotation-configr的功能，所以这个配置基本没必要配置，激活在bean类中被检测到的各种注释：spring's @required and 
   @autowired, as well as jsr 250's @postconstruct, @predestroy and @resource (if available), 
   jax-ws's @webserviceref (if available), ejb3's @ejb (if available), and jpa's 
   @persistencecontext and @persistenceunit (if available) --> 
 
<context:annotation-config /> 
<!--会在spring mvc上下文中定义一个 org.springframework.web.servlet.resource.defaultservlethttprequesthandler， 它会像一个检查员，对进入dispatcherservlet的url进行筛查，如果发现是静态资源的请求，就将该请求转由web应用服务器默认的 servlet处理，如果不是静态资源的请求，才由dispatcherservlet继续处理。 
一般web应用服务器默认的servlet名称是"default"，因此defaultservlethttprequesthandler可以 找到它。如果你所有的web应用服务器的默认servlet名称不是"default"，则需要通过default-servlet-name属性显示指 定： 
<mvc:default-servlet-handler default-servlet-name="所使用的web服务器默认使用的servlet名称" /> 
tomcat, jetty, jboss, and glassfish默认名称为default, eg: web.xml中 
 
  1. <servlet-mapping>    
  2.   <servlet-name>default</servlet-name>   
  3.   <url-pattern>*.jpg</url-pattern>     
  4. </servlet-mapping>    
  5. <servlet-mapping>      
  6.   <servlet-name>default</servlet-name>    
  7.   <url-pattern>*.js</url-pattern>    
  8. </servlet-mapping>    
  9. <servlet-mapping>      
  10.   <servlet-name>default</servlet-name>      
  11.   <url-pattern>*.css</url-pattern>     
  12. </servlet-mapping>   
 
 
如果不配置springdefault-servlet-name 默认会设置，已经支持常用的web服务器 
--> 
<mvc:default-servlet-handler /> 
 
<!-- 允许静态资源放在任何地方 ，处理类org.springframework.web.servlet.resource.resourcehttprequesthandler 
<bean id="resourcehttprequesthandler" class="org.springframework.web.servlet.resource.resourcehttprequesthandler"> 
  <property name="locations" value="classpath:/meta-inf/resources/"></property>  
</bean> 
<bean class="org.springframework.web.servlet.handler.simpleurlhandlermapping"> 
  <property name="mappings"> 
    <props> 
      <prop key="/resources/**">resourcehttprequesthandler</prop> 
    </props> 
  </property> 
</bean> 
下面标签实现 
--> 
<mvc:resources mapping="/resources/**" location="/resources/"></mvc:resources> 
<!--  
register "global" interceptor beans to apply to all registered handlermappings . 
each inteceptor must implement the org.springframework.web.servlet.handlerinterceptor or 
org.springframework.web.context.request.webrequestinterceptor interface 
--> 
<mvc:interceptors> 
  <mvc:interceptor> 
    <mvc:mapping path="/**" /> 
    <mvc:exclude-mapping path="/css/**" /> 
    <mvc:exclude-mapping path="/js/**" /> 
    <mvc:exclude-mapping path="/images/**" /> 
    <bean class="com.fpx.common.auth.mgt.framework.interceptor.contextinterceptor" /> 
  </mvc:interceptor> 
</mvc:interceptors> 
 
 
<!-- turns on support for mapping requests to spring mvc @controller methods 
also registers default formatters and validators for use across all @controllers 
配置解析类：org.springframework.web.servlet.config.annotationdrivenbeandefinitionparser 
配置content-negotiation-anager可以在url里设置内容类型参数,可以设置默认内容类型 
<bean id="contentnegotiationmanagerfactorybean" class="org.springframework.web.accept.contentnegotiationmanagerfactorybean" 
p:favorpathextension="false" p:favorparameter="true" p:parametername="format" p:ignoreacceptheader="true" 
p:defaultcontenttype="application/json"> 
  <property name="mediatypes"> 
  <props> 
  <prop key="json">application/json</prop> 
  <prop key="xml">application/xml</prop> 
   </props> 
  </property> 
</bean> 
--> 
<mvc:annotation-driven content-negotiation-anager="contentnegotiationmanagerfactorybean"> 
  <mvc:message-converters> 
    <ref bean="stringhttpmessageconverter" /> 
    <ref bean="jsonhttpmessageconverter" /> 
    <ref bean="marshallinghttpmessageconverter" /> 
  </mvc:message-converters> 
</mvc:annotation-driven> 
 
<!-- 内容管理工厂 --> 
     <bean 
        class="org.springframework.web.accept.contentnegotiationmanagerfactorybean" 
        p:favorpathextension="false" p:favorparameter="true" 
        p:parametername="format" p:ignoreacceptheader="true" 
        p:defaultcontenttype="application/json"> 
        <property name="mediatypes"> 
          <props> 
            <prop key="json">application/json</prop> 
            <prop key="xml">application/xml</prop> 
          </props> 
        </property> 
      </bean> 
 
 
<!-- 内容解析器 ，可以p:parametername="format"来配置返回参数类型 ，通过p:defaultcontenttype配置默认请求内容类型， 
c:qualityvalue="0.5" 可以设置内容类型的优先级， 如果使用了mvc:annotation-driven 和注解方式（@requestbody）, 下面配置是不生效的--> 
 
  <bean class="org.springframework.web.servlet.view.contentnegotiatingviewresolver"> 
     <property name="contentnegotiationmanager"  ref= "contentnegotiationmanagerfactorybean"> 
        
     </property> 
     <property name="defaultviews"> 
        <list> 
          <bean 
             class="org.springframework.web.servlet.view.json.mappingjackson2jsonview"> 
             <property name="modelkey" value="resultvo" /> 
             <property name="extractvaluefromsinglekeymodel" value="true" /> 
          </bean> 
          <bean class="org.springframework.web.servlet.view.xml.marshallingview"> 
             <constructor-arg ref="jaxb2marshaller" /> 
             <property name="contenttype" value="application/xml" /> 
          </bean> 
        </list> 
     </property> 
     <!-- <property name="ignoreacceptheader" value="true" /> --> 
   </bean> 
 
 
   <!-- xml view using a jaxb marshaller --> 
   <bean id="jaxb2marshaller" class="org.springframework.oxm.jaxb.jaxb2marshaller"> 
     <property name="marshallerproperties"> 
        <map> 
          <entry key="jaxb.formatted.output"> 
             <value type="boolean">true</value> 
          </entry> 
          <entry key="jaxb.encoding" value="utf-8" /> 
        </map> 
     </property> 
     <property name="packagestoscan"> 
        <list> 
          <value>com.api.domain</value> 
          <value>com.api.web.controller.vo</value> 
        </list> 
     </property> 
   </bean> 
 
   <bean id="jstlviewresolver" 
     class="org.springframework.web.servlet.view.internalresourceviewresolver"> 
     <property name="order" value="2" /> 
     <property name="viewclass" 
        value="org.springframework.web.servlet.view.jstlview" /> 
     <property name="prefix" value="/views/" /> 
     <property name="suffix" value="" /> 
     <property name="requestcontextattribute" value="rc" /> 
   </bean> 
 
<!-- c:qualityvalue="0.5" 可以设置内容类型的优先级,默认是1.0，越大优先级越高 --> 
   <bean id="stringhttpmessageconverter" 
     class="org.springframework.http.converter.stringhttpmessageconverter"> 
     <property name="supportedmediatypes"> 
        <list> 
          <value>text/plain;charset=utf-8</value> 
          <value>text/html;charset=utf-8</value> 
        </list> 
     </property> 
   </bean> 
 
   <bean id="jsonhttpmessageconverter" 
     class="org.springframework.http.converter.json.mappingjackson2httpmessageconverter" /> 
   <bean id="marshallinghttpmessageconverter" 
     class="org.springframework.http.converter.xml.marshallinghttpmessageconverter"> 
     <constructor-arg ref="jaxb2marshaller" /> 
     <!-- <property name="supportedmediatypes" value="application/xml"></property> --> 
     <property name="supportedmediatypes"> 
        <util:list> 
          <bean class="org.springframework.http.mediatype" c:type="application" c:subtype="xml" c:qualityvalue="0.5"/> 
        </util:list> 
     </property> 
   </bean> 

springmvc返回json配置步骤如下：

1、添加jackson.jar包

2、在applicationcontext.xml配制文件中添加如下代码

<!--解析返回json -->
<!-- <bean class="org.springframework.web.servlet.mvc.annotation.annotationmethodhandleradapter"> -->
  <bean class="org.springframework.web.servlet.mvc.method.annotation.requestmappinghandleradapter">
 <property name="messageconverters">
  <list >
  <ref bean="mappingjacksonhttpmessageconverter" />
  </list>
 </property>
 </bean>
 <bean id="mappingjacksonhttpmessageconverter"
 class="org.springframework.http.converter.json.mappingjackson2httpmessageconverter">
 <property name="supportedmediatypes">
  <list>
  <value>text/html;charset=utf-8</value>
  </list>
 </property>
 </bean> 

3、在controller中添加如下代码

@requestmapping(value="/chinese/listtree", method = requestmethod.post) 
@responsebody 
 public list getlistchinese(model model){
 list<user> list = (list<chinesecategory>) commonmgr.find("from user");
  return list;
 }

返回值可以为list也可以为map类型

总结

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