如何使用WebClient反应式Web客户端发布带有ZIP（压缩数据）正文的请求。
我在内存（bytearrayoutputstream）中创建了一个zip，并希望使用WebClient反应式Web Client在POST请求正文中发送该zip数据。 REST API是PdfReactor REST Web服务。响应是二进制数据（pdf）。
调试代码时，出现以下错误： 池连接发现错误
org.springframework.web.reactive.function.UnsupportedMediaTypeException: Content type 'application/octet-stream' not supported for bodyType=java.io.ByteArrayInputStream
at org.springframework.web.reactive.function.BodyInserters.unsupportedError(BodyInserters.java:297) ~[spring-webflux-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.springframework.web.reactive.function.BodyInserters.lambda$writeWithMessageWriters$9(BodyInserters.java:287) ~[spring-webflux-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at java.base/java.util.Optional.orElseGet(Optional.java:358) ~[na:na]
at org.springframework.web.reactive.function.BodyInserters.writeWithMessageWriters(BodyInserters.java:287) ~[spring-webflux-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.springframework.web.reactive.function.BodyInserters.lambda$fromObject$1(BodyInserters.java:85) ~[spring-webflux-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.springframework.web.reactive.function.client.DefaultClientRequestBuilder$BodyInserterRequest.writeTo(DefaultClientRequestBuilder.java:257) ~[spring-webflux-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.springframework.web.reactive.function.client.ExchangeFunctions$DefaultExchangeFunction.lambda$exchange$1(ExchangeFunctions.java:103) ~[spring-webflux-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at org.springframework.http.client.reactive.ReactorClientHttpConnector.lambda$connect$2(ReactorClientHttpConnector.java:110) ~[spring-web-5.1.2.RELEASE.jar:5.1.2.RELEASE]
at reactor.netty.http.client.HttpClientConnect$HttpClientHandler.requestWithBody(HttpClientConnect.java:528) ~[reactor-netty-0.8.2.RELEASE.jar:0.8.2.RELEASE]
at reactor.netty.http.client.HttpClientConnect$HttpObserver.lambda$onStateChange$0(HttpClientConnect.java:396) [reactor-netty-0.8.2.RELEASE.jar:0.8.2.RELEASE]
at reactor.core.publisher.MonoDefer.subscribe(MonoDefer.java:44) ~[reactor-core-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at reactor.core.publisher.MonoOnAssembly.subscribe(MonoOnAssembly.java:76) [reactor-core-3.2.2.RELEASE.jar:3.2.2.RELEASE]
at reactor.netty.http.client.HttpClientConnect$HttpObserver.onStateChange(HttpClientConnect.java:397) [reactor-netty-0.8.2.RELEASE.jar:0.8.2.RELEASE]
at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.onStateChange(PooledConnectionProvider.java:501) [reactor-netty-0.8.2.RELEASE.jar:0.8.2.RELEASE]
at reactor.netty.resources.PooledConnectionProvider$DisposableAcquire.run(PooledConnectionProvider.java:531) [reactor-netty-0.8.2.RELEASE.jar:0.8.2.RELEASE]
at io.netty.util.concurrent.AbstractEventExecutor.safeExecute(AbstractEventExecutor.java:163) [netty-common-4.1.29.Final.jar:4.1.29.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor.runAllTasks(SingleThreadEventExecutor.java:404) [netty-common-4.1.29.Final.jar:4.1.29.Final]
at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:446) [netty-transport-4.1.29.Final.jar:4.1.29.Final]
at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) [netty-common-4.1.29.Final.jar:4.1.29.Final]
at java.base/java.lang.Thread.run(Thread.java:844) [na:na]
Suppressed: reactor.core.publisher.FluxOnAssembly$OnAssemblyException:
|_ Mono.error ⇢ org.springframework.web.reactive.function.BodyInserters.lambda$writeWithMessageWriters$9(BodyInserters.java:287)
|_ Mono.defer ⇢ reactor.netty.http.client.HttpClientConnect$HttpObserver.onStateChange(HttpClientConnect.java:396)
configuration.json:
{
"document": "test.html",
"addBookmarks": true,
"addLinks": true
}
test.html:
<html>
<img src="img/image.png" />
<div>
Hallo, hier ist ein Testdokument von <span th:text="${userName}" />.
</div>
</html>
map.put(template, tempBytesArray);
map.put(configuration, configByteArray);
try (ByteArrayOutputStream bos = new ByteArrayOutputStream()) {
try (ZipOutputStream zos_ = new ZipOutputStream(bos)) {
map.forEach((k, v) -> {
var zipentry = new ZipEntry(k);
try {
zos_.putNextEntry(zipentry);
zos_.write(v);
zos_.closeEntry();
} catch (IOException e) {
e.printStackTrace();
}
});
byte[] b = bos.toByteArray();
BodyInserter<Object, ReactiveHttpOutputMessage> bodyInserter = BodyInserters.fromObject(bos);
byteArray = pdfReactorClient
.post()
.uri(pdfReactorUrl + PDF_REACTOR_URL_SUFFIX)
.accept(MediaType.APPLICATION_OCTET_STREAM)
.body(BodyInserters.fromObject(bos)
.exchange()
.flatMap(response -> response.bodyToMono (ByteArrayResource.class))
.map(ByteArrayResource::getByteArray)
.block();
zos_.close();
} catch (Exception e) {
// TODO: handle exception
}
如果我在命令行上执行以下CURL，则会得到结果pdf：
curl -X POST -H "Cache-Control: no-cache" -H "Content-Type: application/zip" --data-binary @test.gzip "http://localhost:8080/service/rest/convert.pdf" > result.pdf。
应将其翻译成Java反应性代码。问题是PDFReactor的请求正文（邮编/资产包）。请帮助...
答案 0 :(得分：0)
PDF的内容类型为MediaType.APPLICATION_PDF
如下所示更改内容类型
ERROR Unexpected error detected in bolt session '8c8590fffeb2c45f-000098a4-00000004-54a89d3a07b39611-ca025a5c'. Failed to process a bolt message
org.neo4j.bolt.v1.runtime.BoltConnectionFatality: Failed to process a bolt message
at org.neo4j.bolt.v1.runtime.BoltStateMachine.handleFailure(BoltStateMachine.java:742)
at org.neo4j.bolt.v1.runtime.BoltStateMachine.handleFailure(BoltStateMachine.java:728)
at org.neo4j.bolt.v1.runtime.BoltStateMachine.access$500(BoltStateMachine.java:62)
at org.neo4j.bolt.v1.runtime.BoltStateMachine$State$1.init(BoltStateMachine.java:435)
at org.neo4j.bolt.v1.runtime.BoltStateMachine.init(BoltStateMachine.java:145)
at org.neo4j.bolt.v1.messaging.BoltMessageRouter.lambda$onInit$0(BoltMessageRouter.java:70)
at org.neo4j.bolt.runtime.DefaultBoltConnection.processNextBatch(DefaultBoltConnection.java:195)
at org.neo4j.bolt.runtime.DefaultBoltConnection.processNextBatch(DefaultBoltConnection.java:143)
at org.neo4j.bolt.runtime.ExecutorBoltScheduler.executeBatch(ExecutorBoltScheduler.java:170)
at org.neo4j.bolt.runtime.ExecutorBoltScheduler.lambda$scheduleBatchOrHandleError$2(ExecutorBoltScheduler.java:153)
at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java:1590)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.neo4j.bolt.security.auth.AuthenticationException: The client is unauthorized due to authentication failure.
at org.neo4j.bolt.security.auth.BasicAuthentication.doAuthenticate(BasicAuthentication.java:78)
at org.neo4j.bolt.security.auth.BasicAuthentication.authenticate(BasicAuthentication.java:60)
at org.neo4j.bolt.v1.runtime.BoltStateMachineSPI.authenticate(BoltStateMachineSPI.java:93)
at org.neo4j.bolt.v1.runtime.BoltStateMachine$State$1.init(BoltStateMachine.java:412)
... 10 more
2019-02-02 02:31:53.511+0000 INFO starting batching from `UNWIND $ingredientUpcModels as node return node` operation using iteration `MERGE (src:Token {name: node.tokenKey}) ON CREATE SET src.name = node.tokenKey, src.creationDate = {processDate}, src.updateDate = {processDate} MERGE (dest:Item {divUpc: node.divUpc}) ON CREATE SET dest.upc = node.upc, dest.divNumber = node.division, dest.divUpc = node.divUpc, dest.creationDate = {processDate} MERGE (src)-[r:TOKEN_ITEM]->(dest) ON CREATE SET r.creationDate = {processDate} SET r.score = node.score, r.updateDate = {processDate} )` in separate thread
2019-02-02 02:31:53.544+0000 WARN Error during iterate.commit:
2019-02-02 02:31:53.544+0000 WARN 1 times: org.neo4j.graphdb.TransactionFailureException: Transaction was marked as successful, but unable to commit transaction so rolled back.
2019-02-02 02:31:53.545+0000 WARN Error during iterate.execute:
2019-02-02 02:31:53.545+0000 WARN 1 times: Invalid input ')': expected whitespace, comment, '.', node labels, '[', "=~", IN, STARTS, ENDS, CONTAINS, IS, '^', '*', '/', '%', '+', '-', '=', "<>", "!=", '<', '>', "<=", ">=", AND, XOR, OR, ',', LOAD CSV, FROM, INTO, START, MATCH, UNWIND, MERGE, CREATE GRAPH >>, CREATE >> GRAPH, CREATE GRAPH, CREATE, SET, DELETE GRAPHS, DELETE, REMOVE, FOREACH, WITH, CALL, PERSIST, RELOCATE, RETURN, SNAPSHOT, UNION, ';' or end of input (line 1, column 515 (offset: 514))
"UNWIND {_batch} AS _batch WITH _batch.node AS node MERGE (src:Token {name: node.tokenKey}) ON CREATE SET src.name = node.tokenKey, src.creationDate = {processDate}, src.updateDate = {processDate} MERGE (dest:Item {divUpc: node.divUpc}) ON CREATE SET dest.upc = node.upc, dest.divNumber = node.division, dest.divUpc = node.divUpc, dest.creationDate = {processDate} MERGE (src)-[r:TOKEN_ITEM]->(dest) ON CREATE SET r.creationDate = {processDate} SET r.score = node.score, r.updateDate = {processDate} )"
^
2019-02-02 02:31:53.741+0000 INFO starting batching from `UNWIND $ingredientUpcModels as node return node` operation using iteration `MERGE (src:Token {name: node.tokenKey}) ON CREATE SET src.name = node.tokenKey, src.creationDate = {processDate}, src.updateDate = {processDate} MERGE (dest:Item {divUpc: node.divUpc}) ON CREATE SET dest.upc = node.upc, dest.divNumber = node.division, dest.divUpc = node.divUpc, dest.creationDate = {processDate} MERGE (src)-[r:TOKEN_ITEM]->(dest) ON CREATE SET r.creationDate = {processDate} SET r.score = node.score, r.updateDate = {processDate} )` in separate thread
2019-02-02 02:31:53.752+0000 WARN Error during iterate.commit:
2019-02-02 02:31:53.752+0000 WARN 1 times: org.neo4j.graphdb.TransactionFailureException: Transaction was marked as successful, but unable to commit transaction so rolled back.
2019-02-02 02:31:53.752+0000 WARN Error during iterate.execute:
2019-02-02 02:31:53.752+0000 WARN 1 times: Invalid input ')': expected whitespace, comment, '.', node labels, '[', "=~", IN, STARTS, ENDS, CONTAINS, IS, '^', '*', '/', '%', '+', '-', '=', "<>", "!=", '<', '>', "<=", ">=", AND, XOR, OR, ',', LOAD CSV, FROM, INTO, START, MATCH, UNWIND, MERGE, CREATE GRAPH >>, CREATE >> GRAPH, CREATE GRAPH, CREATE, SET, DELETE GRAPHS, DELETE, REMOVE, FOREACH, WITH, CALL, PERSIST, RELOCATE, RETURN, SNAPSHOT, UNION, ';' or end of input (line 1, column 515 (offset: 514))
"UNWIND {_batch} AS _batch WITH _batch.node AS node MERGE (src:Token {name: node.tokenKey}) ON CREATE SET src.name = node.tokenKey, src.creationDate = {processDate}, src.updateDate = {processDate} MERGE (dest:Item {divUpc: node.divUpc}) ON CREATE SET dest.upc = node.upc, dest.divNumber = node.division, dest.divUpc = node.divUpc, dest.creationDate = {processDate} MERGE (src)-[r:TOKEN_ITEM]->(dest) ON CREATE SET r.creationDate = {processDate} SET r.score = node.score, r.updateDate = {processDate} )"