Spring mvc 返回json格式 - 龙企阁 - 博客频道 - CSDN.NET

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第一次使用spring mvc ，在此也算是记录一下以防忘记，希望有经验的朋友指出不足的地方

一、使用maven管理jar。

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1. <dependency>  
2.     <groupId>org.codehaus.jackson</groupId>  
3.     <artifactId>jackson-core-lgpl</artifactId>  
4.     <version>1.9.6</version>  
5. </dependency>  
6. <dependency>  
7.     <groupId>org.codehaus.jackson</groupId>  
8.     <artifactId>jackson-core-asl</artifactId>  
9.     <version>1.9.4</version>  
10. </dependency>  
11. <dependency>  
12.     <groupId>org.codehaus.jackson</groupId>  
13.     <artifactId>jackson-mapper-asl</artifactId>  
14.     <version>1.9.5</version>  
15. </dependency>  
16. <dependency>  
17.     <groupId>org.codehaus.jackson</groupId>  
18.     <artifactId>jackson-mapper-lgpl</artifactId>  
19.     <version>1.9.6</version>  
20. </dependency>  

<dependency>
	<groupId>org.codehaus.jackson</groupId>
	<artifactId>jackson-core-lgpl</artifactId>
	<version>1.9.6</version>
</dependency>
<dependency>
	<groupId>org.codehaus.jackson</groupId>
	<artifactId>jackson-core-asl</artifactId>
	<version>1.9.4</version>
</dependency>
<dependency>
	<groupId>org.codehaus.jackson</groupId>
	<artifactId>jackson-mapper-asl</artifactId>
	<version>1.9.5</version>
</dependency>
<dependency>
	<groupId>org.codehaus.jackson</groupId>
	<artifactId>jackson-mapper-lgpl</artifactId>
	<version>1.9.6</version>
</dependency>

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1. <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">      
2.         <property name="messageConverters">      
3.             <list >      
4.                 <ref bean="mappingJacksonHttpMessageConverter" />      
5.             </list>      
6.         </property>      
7.     </bean>  

<bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">    
		<property name="messageConverters">    
			<list >    
				<ref bean="mappingJacksonHttpMessageConverter" />    
			</list>    
		</property>    
	</bean>

mappingJacksonHttpMessageConverter ： 用来处理json格式转换

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1. <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">    
2.     <property name="supportedMediaTypes">    
3.         <list>    
4.             <value>application/json;charset=UTF-8</value>    
5.        </list>    
6.     </property>  
7. </bean>  

<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">  
    <property name="supportedMediaTypes">  
        <list>  
            <value>application/json;charset=UTF-8</value>  
       </list>  
    </property>
</bean>

1、

如果 mappingJacksonHttpMessageConverter 可以 直接写成如下：

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1. <bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />    

<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter" />  

2、

supportedMediaTypes 的 list 里面 可以写多个value

<list>

<value>apolication/json; charset=UTF-8</value>

<value>text/html;charset=UTF-8</value>

</list>

三、controller 配置@ResponseBody

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1. @Controller  
2. public class LoginController {  
3.     @RequestMapping(value="/validataUser.json")  
4.     @ResponseBody  
5.     public Map<String,Object> validataUser(@RequestParam String userName){  
6.         logger.info(" validata user : {}",userName);  
7.         Map<String,Object> map = new HashMap<String,Object>();  
8.         map.put("code", true);  
9.         return map;  
10.     }  
11. }  

@Controller
public class LoginController {
	@RequestMapping(value="/validataUser.json")
	@ResponseBody
	public Map<String,Object> validataUser(@RequestParam String userName){
		logger.info(" validata user : {}",userName);
		Map<String,Object> map = new HashMap<String,Object>();
		map.put("code", true);
		return map;
	}
}

四：页面上仍然按照原来的ajax区json的格式一样、

题外话：

关于 @ResponseBody：

将内容或对象作为 HTTP 响应正文返回，使用@ResponseBody将会跳过视图处理部分，而是调用适合HttpMessageConverter，将返回值写入输出流。

Spring mvc 返回json格式 - 龙企阁 - 博客频道 - CSDN.NET

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原文地址：http://www.cnblogs.com/wang3680/p/3d1bbff1d33569d470fbd02664f4ac75.html