Java 如何在Json响应中设置http头
我有一个CXF RESTful服务,它返回XML和Json格式。我需要在RESTful服务中添加一个自定义http头。下面是一个示例代码片段Java 如何在Json响应中设置http头,java,jsonp,cxf,Java,Jsonp,Cxf,我有一个CXF RESTful服务,它返回XML和Json格式。我需要在RESTful服务中添加一个自定义http头。下面是一个示例代码片段 @GET @Path("/test") @Produces("application/xml") public Response test( @QueryParam("p") String var { TestRequest req = new TestRequest();
@GET
@Path("/test")
@Produces("application/xml")
public Response test(
@QueryParam("p") String var
{
TestRequest req = new TestRequest();
req.setVar(var);
TestResponse res = p.getData(req);
return Response.ok(res).header("Result", res.getResult()).build();
}
@GET
@Path("/test/jsonp")
public String testJSONP(
@QueryParam("p") String var,
@QueryParam("cb") String callBack
{
Response resp = test(var);
XStream xs = new XStream(new JsonHierarchicalStreamDriver());
xs.setMode(XStream.NO_REFERENCES);
xs.alias("TestResponse", TestResponse.class);
StringBuilder sb = new StringBuilder();
sb.append(callBack);
sb.append("(");
GsonBuilder gb = new GsonBuilder();
gb.registerTypeAdapter(XMLGregorianCalendar.class, new XMLGregorianCalenderSerializer());
gb.setPrettyPrinting();
Gson gson = gb.create();
sb.append(gson.toJson(resp));
sb.append(")");
return sb.toString();
}
上面的代码显示了设置自定义http头“Result”的XML响应。我可以在响应头中看到新的http头。到目前为止还不错
现在,这里是Json版本,它在内部调用testService()方法来获取结果,然后使用google Gson API将结果发送回。这一直运作良好,直到我决定返回新的标题。下面是代码片段
@GET
@Path("/test")
@Produces("application/xml")
public Response test(
@QueryParam("p") String var
{
TestRequest req = new TestRequest();
req.setVar(var);
TestResponse res = p.getData(req);
return Response.ok(res).header("Result", res.getResult()).build();
}
@GET
@Path("/test/jsonp")
public String testJSONP(
@QueryParam("p") String var,
@QueryParam("cb") String callBack
{
Response resp = test(var);
XStream xs = new XStream(new JsonHierarchicalStreamDriver());
xs.setMode(XStream.NO_REFERENCES);
xs.alias("TestResponse", TestResponse.class);
StringBuilder sb = new StringBuilder();
sb.append(callBack);
sb.append("(");
GsonBuilder gb = new GsonBuilder();
gb.registerTypeAdapter(XMLGregorianCalendar.class, new XMLGregorianCalenderSerializer());
gb.setPrettyPrinting();
Gson gson = gb.create();
sb.append(gson.toJson(resp));
sb.append(")");
return sb.toString();
}
我无法在Json响应中看到http头
如有任何反馈,我们将不胜感激
-谢谢
更新
我在Json方法中添加了以下代码用于测试
@GET
@Path("/test/jsonp")
public String testJSONP(
@QueryParam("p") String var,
@QueryParam("cb") String callBack
{
Response resp = test(var);
XStream xs = new XStream(new JsonHierarchicalStreamDriver());
xs.setMode(XStream.NO_REFERENCES);
xs.alias("TestResponse", TestResponse.class);
StringBuilder sb = new StringBuilder();
sb.append(callBack);
sb.append("(");
GsonBuilder gb = new GsonBuilder();
gb.registerTypeAdapter(XMLGregorianCalendar.class, new XMLGregorianCalenderSerializer());
gb.setPrettyPrinting();
Gson gson = gb.create();
sb.append(gson.toJson(resp));
sb.append(")");
return Response.ok(sb.toString(), MediaType.APPLICATION_JSON).header("Result", "50").build();
}
这将正确设置头值,但问题是Json响应格式似乎已更改。由于这是一项现有服务,我不允许这样做。
以下是现有的响应格式
null({
"status": "Completed",
"totalResult": "252",
"bin": [
{
"type": "source",
"value": "documentation",
"ndocs": "243"
},
{
"type": "source",
"value": "wikihelp",
"ndocs": "6"
},
"entries": {
"item": [
{
"url": "http://test.com/test.htm",
"title": "\u003cspan class\u003d\"vivbold qt0\"\u003eXREF\u003c/span\u003e",
"snippet": " Test data.",
"source": "documentation",
"type": "html",
"shortDescription": "Starts the TEST command.",
"category": [
"User"
],
"publishDate": "2012-02-05T12:00:00-0500",
"lastUpdateDate": "2012-03-14T12:00:00-0400",
"topicId": "GUID-7DD70C3C-B8AD-40F1-8A69-5D1EECEAB013"
}
]
}
})
下面是添加此更改后的响应
null({
"status": 200,
"entity": {
"status": "Completed",
"totalResult": "252",
"bin": [
{
"type": "source",
"value": "documentation",
"ndocs": "243"
},
{
"type": "source",
"value": "wikihelp",
"ndocs": "6"
}
],
"entries": {
"item": [
{
"url": "http://test.com/test.htm",
"title": "\u003cspan class\u003d\"vivbold qt0\"\u003eXREF\u003c/span\u003e",
"snippet": " Test data.",
"source": "documentation",
"type": "html",
"shortDescription": "Starts the TEST command.",
"category": [
"User"
],
"publishDate": "2012-02-05T12:00:00-0800",
"lastUpdateDate": "2012-03-14T12:00:00-0700",
"topicId": "GUID-7DD70C3C-B8AD-40F1-8A69-5D1EECEAB013"
}
]
}
},
"metadata": {
"Result": {
}
}
})
您需要更改方法的签名,以返回的实例,而不是字符串,然后手动生成响应 从: 更新 您还可以使用如下注释将
HttpServletResponse
注入处理程序:
@Path("/example")
public class Welcome {
@GET
public String getSomething(
@QueryParam("p1") String param1,
@QueryParam("p2") String param2,
@Context HttpServletResponse response) {
response.addHeader("CustomHeader", "CustomValue");
return "my awesome response";
}
}
请注意,有一个原因导致未注入
HttpServletResponse
,因此您需要一个更新的CXF版本。@npe..感谢您的响应….我确实在Jsonp方法中使用了以下代码尝试了这一点。。。。返回Response.ok(sb.toString(),MediaType.APPLICATION_JSON).header(“Result”,“200”).build();这会在不更改签名的情况下设置标头,但由于某些原因,这会更改响应格式。由于这是一项现有服务,我不允许这样做。我已经用另一个解决方案更新了答案,请检查。@npe…非常感谢,我不知道HTTPResponse对象可以作为上下文传递。它工作得很好。+1作为参数的HttpServletResponse
似乎不适用于CXF 2.7版。它抛出“2个IllegalAnnotationExceptions计数”。然而,它确实可以作为一个字段工作。这个答案仍然有效吗尤其是updateCustomer
方法定义-声明示例仍然有效。也许这是2.7中的一个bug?