那么Http协议中的Multipart是个什么东东?下面是摘抄http协议1.1的一段话:
在multipart entity(多部分实体)的例子中,一个或多个不同的数据集合并在一个单一的body(体)中,一个"multipart"(多部分)类型 field的(域)必须出现在实体的header(头域)。body(体)必须包括一个或多个body part(体部分),每一个位于boundary(边界)定界符线之前,最后一个则跟着一个结束边界定界符线。在它的边界定界符线后,每一个体部分由头域、空行、体组成。
上面的描述写的有点拗口,简单的理解可以为:一个post的请求,可以根据一定规范去定义多个部分;
下面用移动网状网协议(其实就是一个请求中包括2个独立的xml内容,一个head的xml,一个body的xml)去举例说明如何利用Jersey处理Multipart,主要代码如下(开始的时候server端接收的代码死活不知道如何写也没查到别人怎么写的,后来一生气,反编译jersey-multipart-1.0.3.1.jar包的代码看了下,才明白):
复制代码代码如下:
private static WebResource webResource = client.resource("http://xxx.xx.xx:xxx");
public static final String HeadFieldName = "xmlhead";
public static final String BodyFieldName = "xmlbody";
// Client发送代码
public static String post(String head, String body) throws BusinessException {
FormDataMultiPart multiPart = new FormDataMultiPart();
multiPart.field(RequestField.HeadFieldName, head, MediaType.MULTIPART_FORM_DATA_TYPE);
multiPart.field(RequestField.BodyFieldName, body, MediaType.MULTIPART_FORM_DATA_TYPE);
return webResource.type("multipart/form-data").post(String.class, multiPart);
}
// Server端接收代码
@POST
@Produces({MediaType.APPLICATION_XML, MediaType.MULTIPART_FORM_DATA})
@Consumes({MediaType.APPLICATION_XML, MediaType.MULTIPART_FORM_DATA})
public String service(FormDataMultiPart multiPart) throws Exception{
if(multiPart == null){
if(_logger.isErrorEnabled()){
_logger.error("the request FormDataMultiPart is null");
}
throw new Exception("the request FormDataMultiPart is null");
}
List< RequestField > requestFields = new ArrayList< RequestField >();
for(BodyPart bodyPart : multiPart.getBodyParts()){
String fieldName = ((FormDataBodyPart)bodyPart).getName().trim();
if(fieldName.equalsIgnoreCase(RequestField.HeadFieldName)){
requestFields.add(new RequestField(fieldName, bodyPart.getEntityAs(String.class)));
}
else if(fieldName.equalsIgnoreCase(RequestField.BodyFieldName)){
requestFields.add(new RequestField(fieldName, bodyPart.getEntityAs(String.class)));
}
else{
if(_logger.isWarnEnabled()){
_logger.warn("invalid fieldName:" + fieldName + ",originXml:" + bodyPart.getEntityAs(String.class));
}
}
}
.....
}
用工具抓包的实际post报文:
复制代码代码如下:
POST /ba/resources/bossServer HTTP/1.1
Content-Type: multipart/form-data;boundary=Boundary_1_30911772_1367997277472
MIME-Version: 1.0
User-Agent: Java/1.6.0_10-rc2
Host: 192.168.245.18:8082
Accept: text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
Connection: keep-alive
Content-Length: 1600
--Boundary_1_30911772_1367997277472
Content-Disposition: form-data;name="xmlhead"
Content-Type: multipart/form-data
< ?xml version="1.0" encoding="UTF-8"? >
< InterBOSS >
< Version >0100< /Version >
< TestFlag >0< /TestFlag >
< BIPType >
< BIPCode >BIP2B543< /BIPCode >
< ActivityCode >T2001543< /ActivityCode >
< ActionCode >0< /ActionCode >
< /BIPType >
< RoutingInfo >
< OrigDomain >IMPS< /OrigDomain >
< RouteType >01< /RouteType >
< Routing >
< HomeDomain >BOSS< /HomeDomain >
< RouteValue >13810494631< /RouteValue >
< /Routing >
< /RoutingInfo >
< TransInfo >
< SessionID >2013050815143783928824< /SessionID >
< TransIDO >2013050815143783928824< /TransIDO >
< TransIDOTime >20130508151437< /TransIDOTime >
< /TransInfo >
< /InterBOSS >
--Boundary_1_30911772_1367997277472
Content-Disposition: form-data;name="xmlbody"
Content-Type: multipart/form-data
< ?xml version="1.0" encoding="UTF-8"? >
< InterBOSS >
< SvcCont >< ![CDATA[< subscribeServiceReq >
< msgTransactionID >210001BIP2B543130508151437477294< /msgTransactionID >
< subscribeServInfo >
< oprTime >20130508151436< /oprTime >
< actionID >06< /actionID >
< effTime >20130508151437< /effTime >
< expireTime >30000101000000< /expireTime >
< feeUser_ID >13810494631< /feeUser_ID >
< destUser_ID >13810494631< /destUser_ID >
< actionReasonID >1< /actionReasonID >
< servType >210001< /servType >
< subServType >FXCJHY< /subServType >
< SPID >901508< /SPID >
< SPServID >FXCJHY< /SPServID >
< accessMode >01< /accessMode >
< feeType >2< /feeType >
< /subscribeServInfo >
< /subscribeServiceReq >]] >< /SvcCont >
< /InterBOSS >
--Boundary_1_30911772_1367997277472--