spring mvc:输出json，输出多个json

spring mvc:输出xml/输出json

用到的注解@ResponseBody

@ResponseBody用来输出json/xml等格式数据（非html）

controller输出用到的类

org.springframework.web.bind.annotation.ResponseBody

需要bean解析支持

<!-- bean视图解析 -->
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>

　　

用到的json插件

<!-- json插件 -->
	<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-annotations -->
	<dependency>
	    <groupId>com.fasterxml.jackson.core</groupId>
	    <artifactId>jackson-annotations</artifactId>
	    <version>2.7.4</version>
	</dependency>
		<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-core -->
	<dependency>
	    <groupId>com.fasterxml.jackson.core</groupId>
	    <artifactId>jackson-core</artifactId>
	    <version>2.7.4</version>
	</dependency>
		<!-- https://mvnrepository.com/artifact/com.fasterxml.jackson.core/jackson-databind -->
	<dependency>
	    <groupId>com.fasterxml.jackson.core</groupId>
	    <artifactId>jackson-databind</artifactId>
	    <version>2.7.4</version>
	</dependency>

　　

项目访问地址：http://localhost:8080/gugua3/person/list

包名：json

配置文件：web.xml, applicationContext.xml, json-servlet.xml

web.xml

<web-app>
  <display-name>Archetype Created Web Application</display-name>

<!--配置文件路径-->
<context-param>
 	<param-name>contextConfigLocation</param-name>
	<param-value>/WEB-INF/applicationContext.xml</param-value>
</context-param>

<!-- 字符过滤器 -->
<filter>
   <filter-name>encodingFilter</filter-name>
   <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
   <init-param>
       <param-name>encoding</param-name>
       <param-value>UTF-8</param-value>
   </init-param>
</filter>
<filter-mapping>
    <filter-name>encodingFilter</filter-name>
    <url-pattern>/*</url-pattern>
</filter-mapping> 

<!-- 监听转发 -->
<listener>
	<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<servlet>
    <servlet-name>json</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>json</servlet-name>
    <url-pattern>/</url-pattern>
</servlet-mapping>    

</web-app>

　　

applicationContext.xml

<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
					http://www.springframework.org/schema/beans/spring-beans.xsd
					http://www.springframework.org/schema/mvc
					http://www.springframework.org/schema/mvc/spring-mvc.xsd
					http://www.springframework.org/schema/context
					http://www.springframework.org/schema/context/spring-context.xsd">

<!-- 默认：注解映射支持 -->
<mvc:annotation-driven/>
<!-- 静态资源配置 -->
<mvc:resources location="/pages/**" mapping="/pages/"/>

<!-- 自动扫描包名,controller -->
<context:component-scan base-package="json"/>		

</beans>

　　

json-servlet.xml

<beans
xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
					http://www.springframework.org/schema/beans/spring-beans.xsd
					http://www.springframework.org/schema/mvc
					http://www.springframework.org/schema/mvc/spring-mvc.xsd
					http://www.springframework.org/schema/context
					http://www.springframework.org/schema/context/spring-context.xsd">

<!-- bean视图解析 -->
<bean class="org.springframework.web.servlet.view.BeanNameViewResolver"/>					

</beans>

　　

Person.java

package json;

public class Person {

	String name;
	String passwd;

	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}

	public String getPasswd() {
		return passwd;
	}
	public void setPasswd(String passwd) {
		this.passwd = passwd;
	}

}

　　

PersonController.java

package json;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

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

@Controller
@RequestMapping(value="/person")
public class PersonController {

	@RequestMapping(value="/list", method=RequestMethod.GET)
	@ResponseBody
	public Map<String, Object> getPerson()
	{
		List<Person> list = new ArrayList<Person>();
		Person person1 = new Person();
		person1.setName("张三");
		person1.setPasswd("123456");
		list.add(person1);

		Person person2 = new Person();
		person2.setName("李四");
		person2.setPasswd("456789");
		list.add(person2);

		Map<String, Object> maps = new HashMap<String, Object>(3);
		maps.put("work", "研发");
		maps.put("school", "suzhou");
		maps.put("list", list);
		return maps;

	}

}