springMVC多视图的支持

1、在springmvc.xml中加上

 <!-- 多视图的支持 -->
         <bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
             <property name="contentNegotiationManager">
                 <bean class="org.springframework.web.accept.ContentNegotiationManagerFactoryBean"/>
             </property>
             <property name="mediaTypes">
                 <map>
                     <entry key="json" value="application/json"/>
                     <entry key="xml" value="application/xml"/>
                 </map>
             </property>
             <property name="defaultViews">
                 <list>
                     <bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView"/>
                     <bean class="org.springframework.web.servlet.view.xml.MarshallingView">
                         <constructor-arg>
                             <bean class="org.springframework.oxm.jaxb.Jaxb2Marshaller">
                                 <property name="classesToBeBound">
                                     <list>
                                         <value>com.xiaostudy.domain.User</value>
                                     </list>
                                 </property>
                             </bean>
                         </constructor-arg>
                     </bean>
                 </list>
             </property>
         </bean>

2、在支持多视图的类中加上注释@XmlRootElement

 package com.xiaostudy.domain;

 import javax.xml.bind.annotation.XmlRootElement;

 @XmlRootElement
 public class User {

     private int id;
     private String username;
     private String password;
     private int age;

     public int getId() {
         return id;
     }

     public void setId(int id) {
         this.id = id;
     }

     public String getUsername() {
         return username;
     }

     public void setUsername(String username) {
         this.username = username;
     }

     public String getPassword() {
         return password;
     }

     public void setPassword(String password) {
         this.password = password;
     }

     public int getAge() {
         return age;
     }

     public void setAge(int age) {
         this.age = age;
     }

     @Override
     public String toString() {
         return "User [id=" + id + ", username=" + username + ", password=" + password + ", age=" + age + "]";
     }

 }

3、使用

 package com.xiaostudy.controller;

 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;

 import com.xiaostudy.domain.User;

 @Controller//<bean class="com.xiaostudy.controller.MyController"/>
 @RequestMapping(value="/myController")//访问该类的方法时，前面多这样一个路径
 public class MyController {

     @RequestMapping("multiView")
     public User multiView() {
         User user = new User();
         user.setId(2018);
         user.setUsername("xiaostudy");
         user.setPassword("123456");
         user.setAge(23);
         return user;
     }

 }

4、访问

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