Java 所需正文[文件]未指定Micronaut多部分上载
尝试使用声明性HTTP客户端上载文件,如下所示 Http客户端Java 所需正文[文件]未指定Micronaut多部分上载,java,micronaut,micronaut-client,micronaut-rest,Java,Micronaut,Micronaut Client,Micronaut Rest,尝试使用声明性HTTP客户端上载文件,如下所示 Http客户端 @Client("http://localhost:8080/product") public interface IHttpClient { @Post(consumes = MediaType.MULTIPART_FORM_DATA, produces = MediaType.MULTIPART_FORM_DATA) public String post(@Body MultipartBody
@Client("http://localhost:8080/product")
public interface IHttpClient {
@Post(consumes = MediaType.MULTIPART_FORM_DATA, produces = MediaType.MULTIPART_FORM_DATA)
public String post(@Body MultipartBody file);
}
对客户端的依赖注入
@Controller("/productManager")
public class ProductManagerController implements IProductOperation{
private final IHttpClient iProduct;
public ProductManagerController(IHttpClient iProduct) {
this.iProduct = iProduct;
}
@Override
public String post(CompletedFileUpload file) throws IOException {
MultipartBody requestBody = MultipartBody.builder().addPart("file", file.getFilename(), MediaType.MULTIPART_FORM_DATA_TYPE, file.getBytes()).build();
return this.iProduct.post(requestBody);
}
}
产品控制器
@Controller("/product")
public class ProductController implements IProductOperation {
@Post(consumes = MediaType.MULTIPART_FORM_DATA, produces = MediaType.MULTIPART_FORM_DATA)
public String post(@Body MultipartBody file) {
return null;
}
}
卷曲
curl --location --request POST 'http://localhost:8080/productManager' \
--form 'file=@"/Users/macbook/Downloads/anand 001.jpg"'
我面临的一个例外
02:32:24.519 [main] INFO io.micronaut.runtime.Micronaut - Startup completed in 7442ms. Server Running: http://localhost:8080
02:32:33.985 [default-nioEventLoopGroup-1-4] DEBUG i.m.h.client.netty.DefaultHttpClient - Sending HTTP POST to http://localhost:8080/product
02:32:33.990 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - Accept: multipart/form-data
02:32:33.993 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - content-type: multipart/form-data; boundary=ac4442578cac3c2
02:32:33.994 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - transfer-encoding: chunked
02:32:33.994 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - host: localhost:8080
02:32:33.995 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - connection: close
02:32:35.260 [default-nioEventLoopGroup-1-4] DEBUG i.m.h.client.netty.DefaultHttpClient - Received response 400 from http://localhost:8080/product
02:32:35.260 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - Content-Type: application/json
02:32:35.260 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - content-length: 119
02:32:35.260 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - connection: close
02:32:35.260 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - Response Body
02:32:35.261 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - ----
02:32:35.261 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - {"message":"Required Body [file] not specified","path":"/file","_links":{"self":{"href":"/product","templated":false}}}
02:32:35.261 [default-nioEventLoopGroup-1-4] TRACE i.m.h.client.netty.DefaultHttpClient - ----
02:32:35.364 [default-nioEventLoopGroup-1-3] ERROR i.m.r.intercept.RecoveryInterceptor - Type [com.example.IProduct$Intercepted] executed with error: Required Body [file] not specified
io.micronaut.http.client.exceptions.HttpClientResponseException: Required Body [file] not specified
at io.micronaut.http.client.netty.DefaultHttpClient$12.channelRead0(DefaultHttpClient.java:2140)
at io.micronaut.http.client.netty.DefaultHttpClient$12.channelRead0(DefaultHttpClient.java:2055)
at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:99)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.micronaut.http.netty.stream.HttpStreamsHandler.channelRead(HttpStreamsHandler.java:193)
at io.micronaut.http.netty.stream.HttpStreamsClientHandler.channelRead(HttpStreamsClientHandler.java:183)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.codec.MessageToMessageDecoder.channelRead(MessageToMessageDecoder.java:103)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.CombinedChannelDuplexHandler$DelegatingChannelHandlerContext.fireChannelRead(CombinedChannelDuplexHandler.java:436)
at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:324)
at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:296)
at io.netty.channel.CombinedChannelDuplexHandler.channelRead(CombinedChannelDuplexHandler.java:251)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.handler.timeout.IdleStateHandler.channelRead(IdleStateHandler.java:286)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:357)
at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1410)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:379)
at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:365)
at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:919)
at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:166)
at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:719)
at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:655)
at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:581)
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:493)
at io.netty.util.concurrent.SingleThreadEventExecutor$4.run(SingleThreadEventExecutor.java:989)
at io.netty.util.internal.ThreadExecutorMap$2.run(ThreadExecutorMap.java:74)
at io.netty.util.concurrent.FastThreadLocalRunnable.run(FastThreadLocalRunnable.java:30)
at java.base/java.lang.Thread.run(Thread.java:832)
您的实现中似乎有不止一个问题,下面是详细信息 客户端和服务器多部分体 post忽略了诊断错误的最重要部分,即class
import
s
当以编程方式构建多部分请求时,Micronaut提供io.Micronaut.http.client.multipart.MultipartBody
类型来构建多部分/表单数据请求。
请注意MultipartBody
的FQN(完全限定名),它是io.micronaut.http.client.*
API的一部分
另一方面,@Controller
端点应使用相应的服务器类型,即:io.micronaut.http.server.multipart.MultipartBody
。
请注意FQN,它是io.micronaut.http.server.*
API的一部分
客户端HTTP头
在引擎盖下,生成的Micronaut客户端将把您的@client
方法注释转换为适当的HTTP头(这里感兴趣的是内容类型HTTP头)。这些标头显然应该与控制器端点预期的标头匹配
虽然简单的方法是为客户端和控制器使用相同的端点注释,但不幸的是,这是错误的:@client
和@controller
各自的方法必须反向生成和消耗
注释字段,以便:
- 客户端在发送请求时产生控制器消耗的数据
- 当收到响应时,客户端使用控制器产生的内容
字符串
。
内容类型规范的端点注释字段应与java.lang.String
的返回类型MediaTye.TEXT\u PLAIN
匹配,而不是MediaType.MULTIPART\u FORM\u DATA
固定实现
然后,@Client
声明性界面应该如下所示(具有完整的导入
s、固定的输入和结果MIME类型):
import io.micronaut.http.MediaType;
导入io.micronaut.http.annotation.Body;
导入io.micronaut.http.annotation.Post;
导入io.micronaut.http.client.annotation.client;
导入io.micronaut.http.client.multipart.MultipartBody;
@客户(“http://localhost:8080/product")
公共接口IHttpClient{
@Post(使用=MediaType.TEXT\u PLAIN,产生=MediaType.MULTIPART\u FORM\u数据)
公共字符串post(@Body MultipartBody file);
}
这里是@Controller
端点实现的内容(使用适当的多部分体和固定的结果MIME类型):
import io.micronaut.http.MediaType;
导入io.micronaut.http.annotation.Body;
导入io.micronaut.http.annotation.Controller;
导入io.micronaut.http.annotation.Post;
导入io.micronaut.http.server.multipart.MultipartBody;
@控制器(“/产品”)
公共类ProductController实现IPProductOperation{
@Post(使用=MediaType.MULTIPART\u FORM\u数据,生成=MediaType.TEXT\u PLAIN)
公共字符串post(@Body MultipartBody文件){
返回null;
}
}