Java 如果存在不接受标头，则为默认媒体类型_Java_Xml_Json_Rest_Jersey

Java 如果存在不接受标头，则为默认媒体类型

java xml json rest jersey

Java 如果存在不接受标头，则为默认媒体类型,java,xml,json,rest,jersey,Java,Xml,Json,Rest,Jersey,在《泽西岛用户指南》中，我阅读了以下内容： @GET @Produces({"application/xml", "application/json"}) public String doGetAsXmlOrJson() { ... } If both are equally acceptable then the former will be chosen because it occurs first. 但是，在我的RESTful服务中（请注意，JSON媒体类型首先出现）：像这

在《泽西岛用户指南》中，我阅读了以下内容：

@GET
@Produces({"application/xml", "application/json"})
public String doGetAsXmlOrJson() {
    ...
}

If both are equally acceptable then the former will be chosen because it occurs first.

但是，在我的RESTful服务中（请注意，JSON媒体类型首先出现）：

像这样的请求：curl-v-xget
http://localhost:8080/myapp/users/2
，返回XML响应。如果请求指定接受头，如json或xml，则一切正常

编辑：

curl --trace - -X GET http://localhost:8080/myapp/users/2
== Info: Adding handle: conn: 0xc2ad68
== Info: Adding handle: send: 0
== Info: Adding handle: recv: 0
== Info: Curl_addHandleToPipeline: length: 1
== Info: - Conn 0 (0xc2ad68) send_pipe: 1, recv_pipe: 0
== Info: About to connect() to localhost port 8080 (#0)
== Info:   Trying 127.0.0.1...
== Info: Connected to localhost (127.0.0.1) port 8080 (#0)
=> Send header, 97 bytes (0x61)
GET /myapp/users/2 HTTP/1.1..User-Agent: curl/7.31.0..Hostlocalhost:8080..Accept: */*....
<= Recv header, 17 bytes (0x11)
HTTP/1.1 200 OK..
== Info: Server Apache-Coyote/1.1 is not blacklisted
<= Recv header, 27 bytes (0x1b)
Server: Apache-Coyote/1.1..
<= Recv header, 31 bytes (0x1f)
Content-Type: application/xml..
<= Recv header, 21 bytes (0x15)
Content-Length:234..
<= Recv header, 37 bytes (0x25)
Date: Sat, 07 Jun 2014 15:26:17GMT..
<= Recv header, 2 bytes (0x2)
..
<= Recv data, 234 bytes (0xea)
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><user id="2"><name>JOHN</name><surname>DOE</surname><heigth>172.5</heigth><weigth>70.5</weigth></user>
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><user id="2"><name>JOHN</name><surname>DOE</surname><heigth>172.5</heigth><weigth>70.5</weigth></user>
== Info: Connection #0 to host localhost left intact

curl--trace--X GEThttp://localhost:8080/myapp/users/2
==信息：添加句柄：连接：0xc2ad68
==信息：添加句柄：发送：0
==信息：添加句柄：recv:0
==Info:Curl\u addHandleToPipeline:length:1
==信息：-Conn 0（0xc2ad68）发送管道：1，接收管道：0
==信息：即将（）连接到本地主机端口8080（#0）
==信息：正在尝试127.0.0.1。。。
==信息：连接到本地主机（127.0.0.1）端口8080（#0）
=>发送头，97字节（0x61）
GET/myapp/users/2 HTTP/1.1..User-Agent:curl/7.31.0..Hostlocalhost:8080..Accept://*。。。。
如果资源方法通过@products注释支持多种媒体类型，并且客户端接受多个媒体类型（例如，具有“Accept:*/*”标题），Jersey应首先返回列出的媒体类型。Jersey 2.x中存在一个错误，导致忽略媒体类型的顺序。见问题。该问题已得到修复，应在Jersey 2.16中发布该修复。您可以使用命令：curl--traceIn my case Jersey browser发送带有“Accept:/”标题的飞行前选项请求吗。Jersey返回500和WADL信息…（*Chrome浏览器）我通过添加@OPTIONS方法返回Ok来解决。不优雅…该死。由于对Java6的依赖，我一直坚持使用Jersey 2.6。
curl --trace - -X GET http://localhost:8080/myapp/users/2
== Info: Adding handle: conn: 0xc2ad68
== Info: Adding handle: send: 0
== Info: Adding handle: recv: 0
== Info: Curl_addHandleToPipeline: length: 1
== Info: - Conn 0 (0xc2ad68) send_pipe: 1, recv_pipe: 0
== Info: About to connect() to localhost port 8080 (#0)
== Info:   Trying 127.0.0.1...
== Info: Connected to localhost (127.0.0.1) port 8080 (#0)
=> Send header, 97 bytes (0x61)
GET /myapp/users/2 HTTP/1.1..User-Agent: curl/7.31.0..Hostlocalhost:8080..Accept: */*....
<= Recv header, 17 bytes (0x11)
HTTP/1.1 200 OK..
== Info: Server Apache-Coyote/1.1 is not blacklisted
<= Recv header, 27 bytes (0x1b)
Server: Apache-Coyote/1.1..
<= Recv header, 31 bytes (0x1f)
Content-Type: application/xml..
<= Recv header, 21 bytes (0x15)
Content-Length:234..
<= Recv header, 37 bytes (0x25)
Date: Sat, 07 Jun 2014 15:26:17GMT..
<= Recv header, 2 bytes (0x2)
..
<= Recv data, 234 bytes (0xea)
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><user id="2"><name>JOHN</name><surname>DOE</surname><heigth>172.5</heigth><weigth>70.5</weigth></user>
<?xml version="1.0" encoding="UTF-8" standalone="yes"?><user id="2"><name>JOHN</name><surname>DOE</surname><heigth>172.5</heigth><weigth>70.5</weigth></user>
== Info: Connection #0 to host localhost left intact