我引用了信用证cordapp cordapp，其操作与复制dist内容并将其放入资源中相同，但是当我在cordapp中启动spring服务器并导航到节点的端口时，我看不到ui有人可以提供帮助关于这个。
我收到404错误，原因是我的有角度的应用程序选择了我的端口，我使用window.location.href与我的cordapp中暴露的api进行了交互，并利用了动态网址，因为有3个节点，并且所有节点都有不同的端口
这是corda api文件的内容：
@RestController
@RequestMapping("/api/trading/") // The paths for GET and POST requests are relative to this base path.
class MainController(rpc: NodeRPCConnection) {
companion object {
private val logger = LoggerFactory.getLogger(RestController::class.java)
}
private val myLegalName = rpc.proxy.nodeInfo().legalIdentities.first().name
private val proxy = rpc.proxy
/**
* Returns the node's name.
*/
@GetMapping(value = "me", produces = arrayOf(MediaType.APPLICATION_JSON_VALUE))
fun whoami() = mapOf("me" to myLegalName)
/**
* Returns all parties registered with the network map service. These names can be used to look up identities using
* the identity service.
*/
@GetMapping(value = "peers", produces = arrayOf(MediaType.APPLICATION_JSON_VALUE))
fun getPeers(): Map<String, List<CordaX500Name>> {
val nodeInfo = proxy.networkMapSnapshot()
return mapOf("peers" to nodeInfo
.map { it.legalIdentities.first().name }
//filter out myself, notary and eventual network map started by driver
.filter { it.organisation !in (SERVICE_NAMES + myLegalName.organisation) })
}
/**
* Displays all IOU states that exist in the node's vault.
*/
@GetMapping(value = "trades", produces = arrayOf(MediaType.APPLICATION_JSON_VALUE))
fun getTrades() : ResponseEntity<List<StateAndRef<TradeState>>> {
return ResponseEntity.ok(proxy.vaultQueryBy<TradeState>().states)
}
/**
* Initiates a flow to agree an IOU between two parties.
*
* Once the flow finishes it will have written the IOU to ledger. Both the lender and the borrower will be able to
* see it when calling /spring/api/ious on their respective nodes.
*
* This end-point takes a Party name parameter as part of the path. If the serving node can't find the other party
* in its network map cache, it will return an HTTP bad request.
*
* The flow is invoked asynchronously. It returns a future when the flow's call() method returns.
*/
@PostMapping(value = "create-trade", produces = arrayOf("text/plain"), headers = arrayOf("Content-Type=application/x-www-form-urlencoded"))
fun createIOU(request: HttpServletRequest): ResponseEntity<String> {
val counter = request.getParameter("counterParty")
val tradeStatus = request.getParameter("tradeStatus")
val userId = request.getParameter("userId")
val assetCode = request.getParameter("assetCode")
val orderType = request.getParameter("orderType")
val txDate = request.getParameter("transactionDate")
val sdf = SimpleDateFormat("dd/MM/yyyy")
val transactionDate = sdf.parse(txDate)
val transactionAmount = request.getParameter("transactionAmount").toDouble()
val transactionFees = request.getParameter("transactionFees").toDouble()
val transactionUnits = request.getParameter("transactionUnits").toDouble()
val transactionPrice = request.getParameter("transactionAmount").toDouble()
val transactionId = request.getParameter("transactionId")
if (counter == null) {
throw IllegalArgumentException("Query parameter 'Counter partyName' missing or has wrong format")
}
if (transactionAmount <= 0 ) {
throw IllegalArgumentException("Query parameter 'Transaction Amount' must be non-negative")
}
val partyX500NameCounter = CordaX500Name.parse(counter)
val counterParty = proxy.wellKnownPartyFromX500Name(partyX500NameCounter) ?:
throw IllegalArgumentException("Target string \"$counter\" doesn't match any nodes on the network.")
val producer = Producer()
return try {
val signedTx = proxy.startTrackedFlowDynamic(TradeFlow.Initiator::class.java,tradeStatus,counterParty,userId,assetCode,orderType,transactionAmount,transactionFees,transactionUnits,transactionId,transactionDate,transactionPrice).returnValue.getOrThrow()
val mapper = JacksonSupport.createNonRpcMapper()
val result = mapper.writeValueAsString(signedTx)
producer.send(result)
ResponseEntity.status(HttpStatus.CREATED).body("Transaction id ${signedTx.id} committed to ledger.\n")
} catch (ex: Throwable) {
logger.error(ex.message, ex)
producer.send(ex.toString())
ResponseEntity.badRequest().body(ex.message!!)
}
}
/**
* Displays all IOU states that only this node has been involved in.
*/
@GetMapping(value = "getTrade", produces = arrayOf(MediaType.APPLICATION_JSON_VALUE))
fun getTransactionDetails(@RequestParam("linearID") linearID: String): ResponseEntity<List<StateAndRef<TradeState>>>? {
if (linearID == null) {
ResponseEntity.status(HttpStatus.BAD_REQUEST).body("Linear Id cannot be null.\n")
}
val idParts = linearID.split('_')
val uuid = idParts[idParts.size - 1]
val criteria = QueryCriteria.LinearStateQueryCriteria(linearId = listOf(UniqueIdentifier.fromString(uuid)),status = Vault.StateStatus.ALL)
return ResponseEntity.ok(proxy.vaultQueryBy<TradeState>(criteria=criteria).states)
}
这是我的角度6 app.route.ts文件：
import { LandingPageComponent } from './Landing-Page/landing-page/landing-page.component';
import { Routes, RouterModule } from "@angular/router";
const APP_ROUTES:Routes=[
{
path:'', component: LandingPageComponent
}
]
export const APP_ROUTES_PROVIDER = RouterModule.forRoot(APP_ROUTES);
目标网页具有与节点交互时应看到的ui内容
这是我的服务文件：
import { Injectable } from '@angular/core';
import { map } from 'rxjs/operators';
import { Http, Response, Headers, RequestOptions,URLSearchParams } from '@angular/http';
import { Subject } from 'rxjs';
@Injectable()
export class CordaContentService {
payload;
constructor(private http:Http) { }
private trades = new Subject<any>();
// Observable string streams
tradeMethodCalled$ = this.trades.asObservable();
getAllTrades() {
let headers = new Headers();
headers.append('Content-Type', 'application/json');
this.http.get('http://localhost:50005/api/trading/trades',{
headers: headers
}).pipe(map((res : any)=>res.json()))
.subscribe(
(res) => {
this.payload = res;
console.log('success');
this.trades.next();
}
);
}
我从app.component.ts类的ngoninit部分调用此getAllTrades函数，但是当我输入此URL时出现HTTP 404错误。 我运行此命令并将dist文件夹内容复制到我的cordapp资源文件夹中 ng build --prod --aot --build-optimizer 我在做错什么吗？
答案 0 :(得分：0)
根据上述信息和评论，我认为您可能在angular应用中使用了错误的url。
通常，如果您已正确启动Spring服务器并调用正确的API，则不会看到404页面未找到的错误消息。