利用 spring mvc ResponseEntity 做文件下载

@RequestMapping(value = "/cmpSts/{cmpId}", method = RequestMethod.GET)
public ResponseEntity<byte[]> cmpSts(@PathVariable int cmpId,
HttpServletRequest request, HttpServletResponse response)
throws Exception {
Locale local=request.getLocale();
String[] file = new String[]{"a.txt","a,b"};
byte[] bs = file[1].getBytes("UTF-8");
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
headers.setContentDispositionFormData("attachment", new String(file[0].getBytes("UTF-8"), "ISO8859-1"));  //解决文件名中文乱码问题
return new ResponseEntity<byte[]>(bs, headers, HttpStatus.CREATED);
}

<bean
class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<property name="messageConverters">
<list>

<bean
class="org.springframework.http.converter.StringHttpMessageConverter">
<property name="writeAcceptCharset" value="false" />
<property name="supportedMediaTypes">
<list>
<value>text/plain;charset=UTF-8</value>
</list>
</property>
</bean>
<bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/>
<bean id="mappingJacksonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
<property name="supportedMediaTypes">
<list>
<value>application/json;charset=UTF-8</value>
</list>
</property>
</bean>
</list>
</property>
</bean>