Odata IBM Mobile First-Http请求失败：javax.net.ssl.SSLHandshakeException

我正在尝试使用SAP Netweaver网关适配器使用OData服务。但我面临的问题如下

运行时：Http请求失败：javax.net.ssl.SSLHandshakeException:sun.security.validator.ValidatorException:PKIX路径生成失败：sun.security.provider.certpath.SunCertPathBuilderException:找不到请求目标的有效证书路径

这是我的worklight.properties

##########    MobileFirst SSL keystore  
#############################################
#SSL certificate keystore location.
ssl.keystore.path=conf/default.keystore
#SSL certificate keystore type (jks or PKCS12)
ssl.keystore.type=jks
#SSL certificate keystore password.
ssl.keystore.password=<keystorepassword>

移动第一SSL密钥库
#############################################
#SSL证书密钥库位置。
ssl.keystore.path=conf/default.keystore
#SSL证书密钥库类型（jks或PKCS12）
ssl.keystore.type=jks
#SSL证书密钥库密码。
ssl.keystore.password=

这是我的adapter.xml

    <connectivity>
    <connectionPolicy xsi:type="nwgateway:NWGatewayHTTPConnectionPolicyType">
        <protocol>https</protocol>
        <domain>mydomain</domain>
        <port>myport</port>
        <connectionTimeoutInMilliseconds>30000</connectionTimeoutInMilliseconds>
        <socketTimeoutInMilliseconds>30000</socketTimeoutInMilliseconds>
        <serviceRootUrl>/sap/opu/odata/SAP/ZBIN_POC_SRV/</serviceRootUrl>
         <authentication>
            <basic/>
            <serverIdentity>
                <client>001</client>
                <username>username</username>
                <password>password</password>
            </serverIdentity>
        </authentication>   
        <!-- Following properties used by adapter's key manager for choosing specific certificate from key store-->  
        <sslCertificateAlias></sslCertificateAlias> 
        <sslCertificatePassword></sslCertificatePassword>
        <maxConcurrentConnectionsPerNode>50</maxConcurrentConnectionsPerNode>                           
    </connectionPolicy>     
</connectivity>

<procedure name="retrieveTravelAgency"/>

https
mydomain
我的港口
30000
30000
/sap/opu/odata/sap/ZBIN_POC_SRV/

这是我正在关注的问题

有人能帮我一下吗，提前谢谢
 确保从后端服务器（在adapter.xml中提到）导出正确的证书并导入默认密钥库。确保从后端服务器（在adapter.xml中提到）导出正确的证书并导入默认密钥库。