Spring MVC使用@ResponseBody返回JSON数据406以及乱码问题解决方案

其实前面一篇关于zTree返回JSON数据的文章已经有一种解决方案了，可是当我今天在新公司搭建新环境的时候，发现又不行了，因此以为以前那个应该不是最优的解决方案。

今天主要提供另外一个解决@ResponseBody返回JSON数据，页面抛出406错误的解决方案。

第一步，引入包：

<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-core</artifactId>
			<version>2.2.3</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-databind</artifactId>
			<version>2.2.3</version>
		</dependency>
		<dependency>
			<groupId>com.fasterxml.jackson.core</groupId>
			<artifactId>jackson-annotations</artifactId>
			<version>2.2.3</version>
		</dependency>

 

 

第二步，修改Spring MVC的配置文件（高能预警：切记须要使用3.2及以上xsd），增长以下代码：

修改于2015-8-26 16:24:58  解决了直接返回String时乱码的问题

 

<!-- 解决@ResponseBody注解直接返回对象并转换成JSON时出现406问题，同时解决了返回String类型乱码的问题 -->
	<mvc:annotation-driven>
		<mvc:message-converters>
			<bean 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
				class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
				<property name="supportedMediaTypes">
					<list>
						<value>application/json; charset=UTF-8</value>
						<value>application/x-www-form-urlencoded; charset=UTF-8</value>
					</list>
				</property>
			</bean>
		</mvc:message-converters>
	</mvc:annotation-driven>

 

此次更新我将spring-mvc.xml的所有配置贴上来，方便你们看：

 

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
	xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"
	xmlns:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://www.springframework.org/schema/aop   
        http://www.springframework.org/schema/aop/spring-aop-3.2.xsd   
        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/tx   
        http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">

	<context:component-scan base-package="com.busupport.apps" />
	
	<!-- 解决@ResponseBody注解直接返回对象并转换成JSON时出现406问题，同时解决了返回String类型乱码的问题 -->
	<mvc:annotation-driven>
		<mvc:message-converters>
			<bean 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
				class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
				<property name="supportedMediaTypes">
					<list>
						<value>application/json; charset=UTF-8</value>
						<value>application/x-www-form-urlencoded; charset=UTF-8</value>
					</list>
				</property>
			</bean>
		</mvc:message-converters>
	</mvc:annotation-driven>

	<!-- 视图解析器 -->
	<bean id="viewResolver"
		class="org.springframework.web.servlet.view.InternalResourceViewResolver">
		<property name="prefix" value="/WEB-INF/pages/" />
		<property name="suffix" value=".jsp" />
		<property name="viewClass"
			value="org.springframework.web.servlet.view.JstlView" />
	</bean>

	<!-- ======================== File Upload ============================= -->
	<bean id="multipartResolver"
		class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
		<property name="defaultEncoding">
			<value>utf-8</value>
		</property>
		<!-- set the max upload size100MB -->
		<property name="maxUploadSize">
			<value>104857600</value>
		</property>
		<property name="maxInMemorySize">
			<value>4096</value>
		</property>
	</bean>

</beans>

 

再次测试，解决问题。

测试代码以下：

一、JAVA代码

/**
	 * 经过注解@ResponseBody返回JSON数据
	 * 
	 * @return
	 */
	@RequestMapping("getdatabyresponsebody.json")
	public @ResponseBody Map<String, Object> getAjaxDataByResponseBody() {
		System.out.println("经过注解@ResponseBody返回JSON数据");
		Map<String, Object> map = new HashMap<String, Object>();
		map.put("success", true);
		map.put("message", "Successfully returning the data.");
		return map;
	}

二、JS代码

 

function getAjaxDataByResponseBody(){
			$.ajax({
				url:'ajax/getdatabyresponsebody.json',
				type:'post',
				dataType:'json',
				success:function(data){
					alert(data.success);
					alert(data.message);
				},
				error:function(){
					alert('System is wrong.');					
				}
			});
		}