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

---