找不到媒体类型=text/plain的泽西MessageBodyWriter

Question

我正在尝试遵循Jersey文档，以便在发生错误时启用非200响应(https://Jersey.java.net/documentation/latest/representations.html#D0E3586)

我的代码看起来像：

@POST
@Produces(MediaType.TEXT_PLAIN)
@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
public ResponseBuilder getData(@FormParam("one") String one,@FormParam("two") String two,@FormParam("three") String three) {
    if(one.isEmpty() || two.isEmpty() || three.isEmpty()) {
        logger.error("Missing params for getData");
        throw new WebApplicationException(501);
    }
    return Response.ok();
}
}

不幸的是，这会产生以下错误：

[2015-02-01T16:13:02.157+0000][glassfish 4.1][严重][][org.glassfish.jersey.message.internal.writerInterceptoreExecutor][TID:_ThreadId=27_ThreadName=HTTP-Listener-1(2)][TimeMillis:1422807182157][LevelValue:1000][[找不到媒体的MessageBodyWritertype=text/plain,type=class

Answer 1

问题是方法的返回类型。它必须是response而不是responsebuilder。

将您的代码更改为以下内容，它应该会起作用：

@POST
@Produces(MediaType.TEXT_PLAIN)
@Consumes(MediaType.APPLICATION_FORM_URLENCODED)
public Response getData(@FormParam("one") String one,@FormParam("two") String two,@FormParam("three") String three) {
    if(one.isEmpty() || two.isEmpty() || three.isEmpty()) {
        logger.error("Missing params for getData");
        throw new WebApplicationException(501);
    }
    return Response.ok();
}