我使用

Java / Spring MVC RESTful应用程序,并在执行POST请求时获得400 HTTP状态错误.提供了@RestController方法,

@RequestMapping(value = "/generateAddress", method = RequestMethod.POST)

public ResponseEntity generateAddress(@RequestParam("walletName") String walletName,

@RequestParam("currencyName") String currencyName) {

logger.info("walletName {} and currencyName {}", walletName, currencyName);

// return if the wallet name or the currency is null

if (Objects.isNull(walletName) || Objects.isNull(currencyName)) {

return new ResponseEntity(HttpStatus.NOT_ACCEPTABLE);

}

WalletInfo walletInfo = walletService.generateAddress(walletName, currencyName);

if (Objects.isNull(walletInfo)) {

return new ResponseEntity(HttpStatus.NOT_ACCEPTABLE);

}

WalletInfoWrapper walletInfoWrapper = new WalletInfoWrapper();

walletInfoWrapper.setName(walletInfo.getName());

return new ResponseEntity(walletInfoWrapper, HttpStatus.CREATED);

}

邮递员的POST请求在下面提供,

错误消息通知,必需字符串参数’walletName’不存在

我还可以提供服务和数据库层的代码,以便观察下拉操作.这是什么问题？

UPDATE

我像这样更新了Postman请求并且仍然有相同的错误,

更新1

我还有同样的问题,

我发布了数据,

{"walletName":"puut","currencyName":"Bitcoin"}

代码如下,

@RequestMapping(value = "/generateAddress", method = RequestMethod.POST, produces = MediaType.APPLICATION_JSON_VALUE)

public ResponseEntity generateAddress(@RequestBody WalletWithMoneyRequest walletWithMoneyRequest) {

String walletName = walletWithMoneyRequest.getWalletName();

String currencyName = walletWithMoneyRequest.getCurrencyName();

logger.info("walletName {} and currencyName {}", walletName, currencyName);

// return if the wallet name or the currency is null

if (Objects.isNull(walletName) || Objects.isNull(currencyName)) {

return new ResponseEntity(HttpStatus.NOT_ACCEPTABLE);

}

WalletInfo walletInfo = walletService.generateAddress(walletName, currencyName);

if (Objects.isNull(walletInfo)) {

return new ResponseEntity(HttpStatus.NOT_ACCEPTABLE);

}

WalletInfoWrapper walletInfoWrapper = new WalletInfoWrapper();

walletInfoWrapper.setName(walletInfo.getName());

return new ResponseEntity(walletInfoWrapper, HttpStatus.CREATED);

}

提供POJO,

private class WalletWithMoneyRequest {

String walletName;

String currencyName;

public WalletWithMoneyRequest(String walletName, String currencyName) {

this.walletName = walletName;

this.currencyName = currencyName;

}

public WalletWithMoneyRequest() {

}

public String getWalletName() {

return walletName;

}

public String getCurrencyName() {

return currencyName;

}

public void setCurrencyName(String currencyName) {

this.currencyName = currencyName;

}

public void setWalletName(String walletName) {

this.walletName = walletName;

}

}

这是错误消息,

这里是Tomcat服务器信息,

org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver: 08/19/2017 19:45:55 - Failed to read HTTP message: org.springframework.http.converter.HttpMessageNotReadableException: JSON parse error: Cannot construct instance of `mobi.puut.controllers.WalletRestController$WalletWithMoneyRequest` (although at least one Creator exists): can only instantiate non-static inner class by using default, no-argument constructor; nested exception is com.fasterxml.jackson.databind.exc.MismatchedInputException: Cannot construct instance of `mobi.puut.controllers.WalletRestController$WalletWithMoneyRequest` (although at least one Creator exists): can only instantiate non-static inner class by using default, no-argument constructor

at [Source: (PushbackInputStream); line: 1, column: 2]

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