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java Resteasy javax如何将contenttype*/*映射到服务器端的application/json?

问题:通过更改服务器代码而不是客户端代码,我无法在客户端消息中获取*/*的内容类型,以映射到服务器端的application/json。(部署的客户端太多,无法执行后者)

在WildFly 10上,一切都按原样工作(使用^{),但在WildFly 14/18上,它失败了

RESTEASY002010: Failed to execute: javax.ws.rs.NotSupportedException: RESTEASY003200: Could not find message body reader for type: class xxxx of content type: */* at org.jboss.resteasy.resteasy-
jaxrs@3.9.1.Final//org.jboss.resteasy.core.interception.ServerReaderInterceptorContext.throwReaderNotFound

以上所有内容都在Java8上。下面的代码显示了客户端更改,该更改将使WF14+在不进行服务器端编辑的情况下工作:

HttpURLConnection conn = (HttpURLConnection) url.openConnection();
conn.setRequestMethod("POST");
conn.setRequestProperty("Content-Type", "*/*");  // works for WF10, not WF14+
// conn.setRequestProperty("Content-Type", "application/json; charset=UTF-8"); // works for all

适用的服务器端代码如下:

@POST
@Path("fileDownload")
@Consumes(MediaType.APPLICATION_JSON)
@Produces(MediaType.APPLICATION_OCTET_STREAM)
// Consume options tried that still failed:
// @Consumes({ MediaType.APPLICATION_JSON, MediaType.WILDCARD, MediaType.APPLICATION_OCTET_STREAM, "*/*", "*/*\r\n", "*/*; charset=UTF-8" } )
public Response fileDownload(@HeaderParam("Range") String range, FileDownloadRequest fileDwnReq) throws IOException { ... }

My net搜索的所有内容都指向客户端更改(这会起作用),但我们必须更改服务器端或保留WF10。我还尝试设置字符集行为或在网络中映射媒体类型。xml,但这没有什么区别。例如:

<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
  <display-name>MyRestServices</display-name>
    <listener>
    <listener-class>org.jboss.resteasy.plugins.server.servlet.ResteasyBootstrap
    </listener-class>
    </listener>
    
    <!--   
    To specify the previous behavior, in which UTF-8 was used for text media types, but 
    the explicit charset was not appended, the context parameter "resteasy.add.charset" may be 
    set to "false". It defaults to "true". 
    See https://docs.jboss.org/resteasy/docs/3.1.2.Final/userguide/html_single/index.html
    This did not work.
     -->
<!--     <context-param> -->
<!--        <param-name>resteasy.add.charset</param-name> -->
<!--        <param-value>false</param-value> -->
<!--     </context-param> -->
        
     <context-param>
        <param-name>resteasy.media.type.mappings</param-name>
        <param-value>*/* : application/json</param-value>
<!-- <param-value>html : text/html, json : application/json, xml : application/xml</param-value> -->
    </context-param>

我被难住了。如有任何建议/建议,将不胜感激

编辑:下面是失败http请求的转储:

 URI=/xxx/fileDownload
 characterEncoding=null
     contentLength=94
       contentType=[*/*]
            header=Accept=text/html, image/gif, image/jpeg, *; q=.2, */*; q=.2
            header=Connection=keep-alive
            header=Content-Type=*/*
            header=Content-Length=94
            header=User-Agent=Java/1.8.0_152
            header=Host=127.0.0.1:8014
            locale=[]
            method=POST
          protocol=HTTP/1.1
       queryString=
        remoteAddr=/127.0.0.1:59867
        remoteHost=127.0.0.1
            scheme=http
              host=127.0.0.1:8014
        serverPort=8014
          isSecure=false
--------------------------RESPONSE--------------------------
     contentLength=0
       contentType=null
            header=Connection=keep-alive
            header=Content-Length=0
            header=Date=Thu, 20 Aug 2020 13:36:44 GMT
            status=415

共 (2) 个答案

  1. # 1 楼答案

    我找到了一种方法,添加一个ContainerRequestFilter,在匹配之前更改标题。下面是诀窍:

    import javax.ws.rs.core.UriInfo;
    import javax.ws.rs.container.ContainerRequestFilter;
    import javax.ws.rs.container.ContainerRequestContext;
    import javax.ws.rs.ext.Provider;
    import javax.ws.rs.container.PreMatching;
    
    @Provider
    @PreMatching
    // Mapp */* to JSON for /filedownload
    public final class ContentFilter implements ContainerRequestFilter {
       @Override
       public void filter(ContainerRequestContext ctx) throws IOException {
          UriInfo uri = ctx.getUriInfo();
          if ((uri != null) && uri.getPath().toLowerCase().contains("filedownload")) {
              String ctp = ctx.getHeaderString("Content-Type");
              if ("*/*".equals(ctp))
                 ctx.getHeaders().putSingle("Content-Type", "application/json; charset=UTF-8");
          }
       }
    }
    

    我还必须在我的网站上添加以下内容。xml

     <context-param>
        <param-name>resteasy.providers</param-name>
        <param-value>xxx.yyy.ContentFilter</param-value>
    </context-param>
    
  2. # 2 楼答案

    在客户端的“内容类型”中使用通配符毫无意义

    客户端可以接受多种格式的服务器响应(使用“accept”头)

    服务器可以接受(使用)多种媒体,但客户机必须知道他正在有效地发布什么样的数据。如果您不告诉服务器您在http正文中发送了什么,服务器(总是)无法猜到