client can't register to nacos server

[zhangruhong]

Issue Description

Type: bug report or feature request

Describe what happened (or what feature you want)

error log when myapplication start

`java.lang.reflect.UndeclaredThrowableException: null

at org.springframework.util.ReflectionUtils.rethrowRuntimeException(ReflectionUtils.java:147) ~[spring-core-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:73) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.register(AbstractAutoServiceRegistration.java:239) ~[spring-cloud-commons-2.2.2.RELEASE.jar:2.2.2.RELEASE]
at com.alibaba.cloud.nacos.registry.NacosAutoServiceRegistration.register(NacosAutoServiceRegistration.java:76) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.1.RELEASE.jar:2.2.1.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.start(AbstractAutoServiceRegistration.java:138) ~[spring-cloud-commons-2.2.2.RELEASE.jar:2.2.2.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.bind(AbstractAutoServiceRegistration.java:101) ~[spring-cloud-commons-2.2.2.RELEASE.jar:2.2.2.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:88) ~[spring-cloud-commons-2.2.2.RELEASE.jar:2.2.2.RELEASE]
at org.springframework.cloud.client.serviceregistry.AbstractAutoServiceRegistration.onApplicationEvent(AbstractAutoServiceRegistration.java:47) ~[spring-cloud-commons-2.2.2.RELEASE.jar:2.2.2.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172) ~[spring-context-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165) ~[spring-context-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139) ~[spring-context-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:404) ~[spring-context-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.publishEvent(AbstractApplicationContext.java:361) ~[spring-context-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.finishRefresh(ServletWebServerApplicationContext.java:165) ~[spring-boot-2.2.8.RELEASE.jar:2.2.8.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554) ~[spring-context-5.2.7.RELEASE.jar:5.2.7.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.8.RELEASE.jar:2.2.8.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) [spring-boot-2.2.8.RELEASE.jar:2.2.8.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.2.8.RELEASE.jar:2.2.8.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.2.8.RELEASE.jar:2.2.8.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.2.8.RELEASE.jar:2.2.8.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) [spring-boot-2.2.8.RELEASE.jar:2.2.8.RELEASE]
at com.xxxxxx.aaaaaa.openguard.OpenGuardApplication.main(OpenGuardApplication.java:10) [classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0]
at java.lang.reflect.Method.invoke(Method.java:483) ~[na:1.8.0]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.8.RELEASE.jar:2.2.8.RELEASE]
Caused by: com.alibaba.nacos.api.exception.NacosException: failed to req API:/nacos/v1/ns/instance after all 
servers([nacos.xxxxxx.com:8848]) tried: <html><body><h1>Whitelabel Error Page</h1><p>This application has no explicit 
mapping for /error, so you are seeing this as a fallback.</p><div id='created'>Tue Jun 30 15:13:32 CST 2020</div><div>There 
was an unexpected error (type=Forbidden, status=403).</div><div>unknown user!</div></body></html>
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:495) ~[nacos-client-1.3.0.jar:na]
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:400) ~[nacos-client-1.3.0.jar:na]
at com.alibaba.nacos.client.naming.net.NamingProxy.reqAPI(NamingProxy.java:396) ~[nacos-client-1.3.0.jar:na]
at com.alibaba.nacos.client.naming.net.NamingProxy.registerService(NamingProxy.java:213) ~[nacos-client-1.3.0.jar:na]
at com.alibaba.nacos.client.naming.NacosNamingService.registerInstance(NacosNamingService.java:207) ~[nacos-client-1.3.0.jar:na]
at com.alibaba.cloud.nacos.registry.NacosServiceRegistry.register(NacosServiceRegistry.java:64) ~[spring-cloud-starter-alibaba-nacos-discovery-2.2.1.RELEASE.jar:2.2.1.RELEASE]
... 25 common frames omitted

Describe what you expected to happen

myapplication can't start

How to reproduce it (as minimally and precisely as possible)

Tell us your environment

nacos server version is <NACOS1.3.0>
client application dependency as follows！

    <dependency>
        <groupId>com.alibaba.cloud</groupId>
        <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        <exclusions>
            <exclusion>
                <artifactId>nacos-client</artifactId>
                <groupId>com.alibaba.nacos</groupId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>com.alibaba.nacos</groupId>
        <artifactId>nacos-client</artifactId>
        <version>1.3.0</version>
    </dependency>


<!--版本管理-->
<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>2.2.1.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>

    </dependencies>
</dependencyManagement>

Anything else we need to know?

I've seen that client put username in paramValues but password in body, I guess this mistake case the problems!
D:/software/repository/com/alibaba/nacos/nacos-client/1.2.1/nacos-client-1.2.1-sources.jar!/com/alibaba/nacos/client/security/SecurityProxy.java:114

    if (StringUtils.isNotBlank(username)) {
        Map<String, String> params = new HashMap<String, String>(2);
        params.put("username", username);
        String body = "password=" + password;
        String url = "http://" + server + contextPath + LOGIN_URL;

        if (server.contains(Constants.HTTP_PREFIX)) {
            url = server + contextPath + LOGIN_URL;
        }

        HttpClient.HttpResult result = HttpClient.request(url, new ArrayList<String>(2),
            params, body, Charsets.UTF_8.name(), HttpMethod.POST);

com/alibaba/nacos/console/security/nacos/NacosAuthManager.java:118

    private String resolveToken(HttpServletRequest request) throws AccessException {
      String bearerToken = request.getHeader(NacosAuthConfig.AUTHORIZATION_HEADER);
      if (StringUtils.isNotBlank(bearerToken) && bearerToken.startsWith(TOKEN_PREFIX)) {
          return bearerToken.substring(7);
      }
      bearerToken = request.getParameter(Constants.ACCESS_TOKEN);
      if (StringUtils.isBlank(bearerToken)) {
          String userName = request.getParameter("username");
          String password = request.getParameter("password");
          bearerToken = resolveTokenFromUser(userName, password);
      }
      return bearerToken;
    }

[KomachiSion]

See #3144 .

[zhangruhong]

See #3144 .

I seen it ,yes! it's really similar to #3144, but I didn't import config starter.
And I have already filled in the account number and password in bootstrap.yml as follows, But it doesn't work!

  spring:
	  cloud:
		nacos:
		  server-addr: nacos.xxxx.com:8848
		  discovery:
			namespace: 6c8f9613-1896-4e60-93af-xxxx
			group: dev
			username: xxxx_dev
			password: *****,.
	  application:
		name: xxx-xxx11

[KomachiSion]

spring.cloud.nacos.naming.username=nacos
spring.cloud.nacos.naming.password=nacos