[英]Why passing Map<String,String> in postman as JSON works but passing the map in Java RestTemplate does not work?
This project is for a WAR application which run over JBOSS Application Server (GraphClient.war), after the deployment of it I can do requests to it using URLs like:该项目适用于在 JBOSS 应用程序服务器 (GraphClient.war) 上运行的 WAR 应用程序,在部署它之后,我可以使用以下 URL 对其进行请求:
http://localhost:8080/GraphClient/helloworld
I call this controller passing a Map<String,String>, using postman an configuring Body > RAW > Json (application/json) and passing the map like: I call this controller passing a Map<String,String>, using postman an configuring Body > RAW > Json (application/json) and passing the map like:
{
"hello1":"Jupiter",
"hello2":"Mercury",
"hello3":"Venus",
"hello4":"Mars",
"hello5":"Earth"
}
IT WORKS, but if I send the same Map<String,String> in Java from another controller I get a 405 method not allowed.它可以工作,但是如果我从另一个 controller 在 Java 中发送相同的 Map<String,String> ,我会得到不允许的 405 方法。 Here is the code:
这是代码:
@RequestMapping(value="/callhelloworld", method=RequestMethod.GET)
public String caller( )
{
MultiValueMap<String, String> body = new LinkedMultiValueMap<String,String>();
body.add("planet1","Jupiter");
body.add("planet2","Mercury");
body.add("planet3","Venus");
body.add("planet4","Mars");
body.add("planet5","Earth");
HttpHeaders headers = new HttpHeaders();
// headers.set(HttpHeaders.CONTENT_TYPE, MediaType.APPLICATION_FORM_URLENCODED_VALUE);
HttpEntity<?> entity = new HttpEntity<>(body, headers);
RestTemplate rt = new RestTemplate();
HttpEntity<String> response = rt.exchange(
"http://localhost:8080/GraphClient/helloworld",
HttpMethod.POST,
entity,
String.class
);
return response.getBody();
}
@RequestMapping(value="/helloworld", method=RequestMethod.GET, consumes=MediaType.APPLICATION_JSON_VALUE)
public String helper( @RequestBody HashMap<String,String> values )
{
String acumPlanets = "PLANETS HERE = ";
for (Map.Entry<String, String> item : values.entrySet()) {
System.out.println("Key " + item.getKey() + " Value " + item.getValue() );
acumPlanets += item.getValue();
}
return acumPlanets;
}
Can you realize what I'm doing wrong with the RestTemplate?你能意识到我在使用 RestTemplate 时做错了什么吗?
Thanks,谢谢,
You defined your endpoint to receive HTTP GET requests:您将端点定义为接收 HTTP GET请求:
@RequestMapping(value="/helloworld", method=RequestMethod.GET, consumes=MediaType.APPLICATION_JSON_VALUE)
But actually with RestTemplate you are performing a HTTP POST request:但实际上使用 RestTemplate 您正在执行 HTTP POST请求:
HttpEntity<String> response = rt.exchange(
"http://localhost:8080/GraphClient/helloworld",
HttpMethod.POST,
entity,
String.class
);
Building on top of both answers by @Isakots and @M.Deinum.建立在@Isakots 和@M.Deinum 的两个答案之上。
You have two issues to fix here:您有两个问题需要在这里解决:
In order to resolve the first issue.为了解决第一个问题。 You should define your endpoint as a POST .
您应该将端点定义为POST 。 Example:
例子:
@RequestMapping(value="/helloworld", method=RequestMethod.POST, consumes=MediaType.APPLICATION_JSON_VALUE)
In order to resolve the second issues replace your LinkedValueMap
with a Map
.为了解决第二个问题,将
LinkedValueMap
替换为Map
。 Example:例子:
Map<String, String> body = new HashMap<>();
body.put("planet1","Jupiter");
body.put("planet2", "Mercury");
body.put("planet3", "Venus");
body.put("planet4", "Mars");
body.put("planet5", "Earth");
HttpEntity<?> entity = new HttpEntity<>(body);
RestTemplate rt = new RestTemplate();
HttpEntity<String> response = rt.exchange(
"http://localhost:8080/GraphClient/helloworld",
HttpMethod.POST,
entity,
String.class
);
After these two changes everything should work as expected.在这两个更改之后,一切都应该按预期工作。
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.