SpringMVC：JSON形式输出(基于Fastjson)

1.依赖配置

<properties>
<spring.version>4.1.4.RELEASE</spring.version>
<fastjson.version>1.2.11</fastjson.version>
<javax.servlet.version>2.5</javax.servlet.version>
<jackson.version>1.9.10</jackson.version>
</properties>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>

<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>${fastjson.version}</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>${javax.servlet.version}</version>
<scope>provided</scope>
</dependency>
</dependencies>

2.一个POJO，要转换为JSON输出的对象

public class shop {
private String name;
private String[] staffName;

public String getName() {
return name;
}

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

public String[] getStaffName() {
return staffName;
}

public void setStaffName(String[] staffName) {
this.staffName = staffName;
}
}

3.servlet-context.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!-- 注意！SpringMVC的配置文件使用的是mvc命名空间 -->
<beans:beans xmlns:context="http://www.springframework.org/schema/context"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns="http://www.springframework.org/schema/mvc"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-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/task http://www.springframework.org/schema/task/spring-task-3.2.xsd http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.2.xsd"> 
<context:annotation-config/>
<context:component-scan base-package="com.mkyong.common.controller" />

<annotation-driven>
<message-converters register-defaults="true">
<!-- @ResponseBody乱码问题，将StringHttpMessageConverter的默认编码设为UTF-8 -->
<beans:bean class="org.springframework.http.converter.StringHttpMessageConverter">
<beans:constructor-arg value="UTF-8"/>
</beans:bean>
<!-- 配置Fastjson支持 -->
<beans:bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
<beans:property name="charset" value="UTF-8"/>
<beans:property name="supportedMediaTypes">
<beans:list>
<beans:value>application/json</beans:value>
<beans:value>text/html;charset=UTF-8</beans:value>
</beans:list>
</beans:property>
<beans:property name="features">
<beans:list>
<beans:value>WriteMapNullValue</beans:value>
<beans:value>QuoteFieldNames</beans:value>
<beans:value>WriteDateUseDateFormat</beans:value>
<beans:value>WriteEnumUsingToString</beans:value>
</beans:list>
</beans:property>
</beans:bean>
</message-converters>
</annotation-driven>
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/"/>
<beans:property name="suffix" value=".jsp"/>
</beans:bean>
</beans:beans>

4.web.xml文件

<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >

<web-app>
<display-name>json output</display-name>
<servlet>
<servlet-name>dispatchServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>classpath:servlet-context.xml</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dispatchServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>

</web-app>

5.controller类

@Controller
@RequestMapping("/kfc/brands")
public class JSONController {

@RequestMapping(value = "{name}",method = RequestMethod.GET)
public @ResponseBody shop getShopInJSON(@PathVariable String name)
{
shop sp = new shop();
sp.setName(name);
sp.setStaffName(new String[]{"Staffname1","Staffname2"});
return sp;
}
//测试用
@RequestMapping("")
public String index()
{
return "index";
}
}

6.测试结果：